Co-reporter:Bing-Bing Lu, Jin Yang, Ying-Ying Liu, and Jian-Fang Ma
Inorganic Chemistry October 2, 2017 Volume 56(Issue 19) pp:11710-11710
Publication Date(Web):September 15, 2017
DOI:10.1021/acs.inorgchem.7b01685
In this work, we report a new polyoxovanadate–resorcin[4]arene-based metal–organic framework (PMOF), [Co2L0.5V4O12]·3DMF·5H2O (1), assembled with a newly functionalized wheel-like resorcin[4]arene ligand (L). 1 features an elegant porous motif and represents a rare example of PMOFs composed of both a resorcin[4]arene ligand and polyoxovanadate. Remarkably, 1 shows open V sites in the channel, which makes 1 an efficient heterogeneous Lewis acid catalyst for the cycloaddition of carbon dioxide to epoxides with high conversion and selectivity. Strikingly, 1 also exhibits high catalytic activity for the heterogeneous oxidative desulfurization of sulfides. Particularly, the heterogeneous catalyst 1 can be easily separated and reused with good catalytic activity.
Co-reporter:Bing-Bing Lu, Wei Jiang, Jin Yang, Ying-Ying Liu, and Jian-Fang Ma
ACS Applied Materials & Interfaces November 15, 2017 Volume 9(Issue 45) pp:39441-39441
Publication Date(Web):October 31, 2017
DOI:10.1021/acsami.7b14179
A stable microporous anionic metal–organic framework (MOF), [(CH3)2NH2]6[Cd3L(H2O)2]·12H2O (1), has been synthesized via solvothermal assembly of a new resorcin[4]arene-functionalized dodecacarboxylic acid (H12L) and Cd(II) cations. The constructed MOF (1) was characterized by single-crystal X-ray diffraction and other physicochemical analyses. 1 exhibits a fascinating 3D microporous framework structure, in which the free water molecules and the [(CH3)2NH2]+ cations were located. Remarkably, the exposed Lewis acid Cd(II) sites of activated 1 make it an efficient heterogeneous catalyst for the cycloaddition of CO2 with epoxides at 1 and 20 atm. Importantly, the activated samples of 1 can be reused at least five circles with excellent catalytic performance. Moreover, the fluorescence detection of Cr2O72– and Fe3+ was studied by using 1 as a potential luminescent sensor.Keywords: carbon dioxide; cycloaddition reaction; luminescent detection; metal−organic framework; resorcin[4]arene;
Co-reporter:Bing-Bing Lu, Wei Jiang, Jin Yang, Ying-Ying Liu, and Jian-Fang Ma
ACS Applied Materials & Interfaces November 15, 2017 Volume 9(Issue 45) pp:39441-39441
Publication Date(Web):October 31, 2017
DOI:10.1021/acsami.7b14179
A stable microporous anionic metal–organic framework (MOF), [(CH3)2NH2]6[Cd3L(H2O)2]·12H2O (1), has been synthesized via solvothermal assembly of a new resorcin[4]arene-functionalized dodecacarboxylic acid (H12L) and Cd(II) cations. The constructed MOF (1) was characterized by single-crystal X-ray diffraction and other physicochemical analyses. 1 exhibits a fascinating 3D microporous framework structure, in which the free water molecules and the [(CH3)2NH2]+ cations were located. Remarkably, the exposed Lewis acid Cd(II) sites of activated 1 make it an efficient heterogeneous catalyst for the cycloaddition of CO2 with epoxides at 1 and 20 atm. Importantly, the activated samples of 1 can be reused at least five circles with excellent catalytic performance. Moreover, the fluorescence detection of Cr2O72– and Fe3+ was studied by using 1 as a potential luminescent sensor.Keywords: carbon dioxide; cycloaddition reaction; luminescent detection; metal−organic framework; resorcin[4]arene;
Co-reporter:Wei Jiang, Jin Yang, Ying-Ying Liu, Shu-Yan Song, and Jian-Fang Ma
Inorganic Chemistry 2017 Volume 56(Issue 5) pp:
Publication Date(Web):February 17, 2017
DOI:10.1021/acs.inorgchem.6b03174
We herein report the porous 4-fold interpenetrated mog (moganite) metal–organic framework (MOF) [Cd3(tipp)(bpdc)2]·DMA·9H2O (1·Cd; H2tipp = 5,10,15,20-tetrakis(4-(imidazol-1-yl)phenyl)porphyrin, H2bpdc = biphenyl-4,4′-dicarboxylic acid, DMA = N,N′-dimethylacetamide). The incorporation of Cd and carboxylate oxygen affords 1·Cd rich Lewis acid and basic sites. This MOF 1·Cd was then applied as an efficient heterogeneous catalyst for the important cyanosilylation of aldehydes and Knoevenagel condensation reactions. 1·Cd features excellent catalytic performance and recyclability for the cyanosilylation of various aldehydes with trimethylsilyl cyanide (TMSCN). Moreover, 1·Cd shows highly efficient catalysis and substrate selectivity for Knoevenagel condensation reactions of various aldehydes with malononitrile. The high catalytic activity and stability toward C–C bond formation make 1·Cd a promising heterogeneous catalyst.
Co-reporter:Shan-Shan Jin, Xue Han, Jin Yang, Hong-Mei Zhang, Xiao-Li Liu, Jian-Fang Ma
Journal of Luminescence 2017 Volume 188(Volume 188) pp:
Publication Date(Web):1 August 2017
DOI:10.1016/j.jlumin.2017.04.048
Fluorescence-based probes have received considerable attention because of their superiority in high selectivity and sensitivity. In this work, two novel luminescent isostructural coordination polymers (CPs), namely, [Zn3(HL)2(DMF)2(H2O)2]·2H2O (1) and [Cd3(HL)2(DMF)2(H2O)2]·2H2O (2), were successfully prepared by using a new resorcin[4]arene-based tetracarboxylic acid H4L under solvothermal conditions. In 1 and 2, HL3- anions bridge four metal cations to form charming 2D double layer structures. Drastically, the highly selective and sensitive luminescent detection of small organic molecules, metal cations and anions, particularly of Fe3+, Cr2O72- and nitrobenzene, has been studied using 1 or 2 as a promising luminescent sensor.Two isostructural resorcin[4]arene-based coordination polymers as luminescent sensors exhibit high selectivity and sensitivity for detection of metal cations, anions and organic pollutants, particularly for Fe3+, Cr2O72- and nitrobenzene.Download high-res image (324KB)Download full-size image
Co-reporter:Wei Jiang, Jin Yang, Ying-Ying Liu and Jian-Fang Ma
Chemical Communications 2016 vol. 52(Issue 7) pp:1373-1376
Publication Date(Web):30 Nov 2015
DOI:10.1039/C5CC08456C
By using a new porphyrin-based linker, two unusual mixed-valent Ag(I,II)– and Cu(I,II)–organic networks were synthesized. Most strikingly, 1 and 2 exhibit highly efficient catalytic activities for the azide–alkyne “click” reaction and oxidation of ethylbenzene.
Co-reporter:Si-Si Zhao, Jin Yang, Ying-Ying Liu, and Jian-Fang Ma
Inorganic Chemistry 2016 Volume 55(Issue 5) pp:2261-2273
Publication Date(Web):February 19, 2016
DOI:10.1021/acs.inorgchem.5b02666
By varying the fluorescent tags of resorcin[4]arene-based tetracarboxylic acids from phenyl to naphthyl, two highly luminescent metal–organic frameworks (MOFs), namely, [Zn2(TPC4A)(DMF)(H2O)4]·3H2O (1) and [(CH3)2NH2]2[Zn(TNC4A)]·4H2O (2), were successfully achieved (TPC4A = 2,8,14,20-tetra-phenyl-6,12,18,24-tetra-methoxy-4,10,16,22-tetra-carboxy-methoxy-resorcin[4]arene and TNC4A = 2,8,14,20-tetra-1-naphthal-6,12,18,24-tetra- methoxy-4,10,16,22-tetra-carboxy-methoxy-resorcin[4]arene). Compound 1 features a unique 2D network, while 2 exhibits a fascinating 3D framework. The highly selective detection of small organic molecules as well as Fe2+ and Fe3+ was performed for 1 and 2 as fluorescent sensors. Remarkably, luminescent 1 and 2 were used as sensory materials for the sensing of various amine vapors with high selectivity and rapid response. Most strikingly, clear fluorescence “on–off” switch-functions toward small organic molecules as well as amine vapors were also explored for luminescent 1 and 2.
Co-reporter:Hong-Mei Zhang, Jin Yang, Wei-Qiu Kan, Ying-Ying Liu, and Jian-Fang Ma
Crystal Growth & Design 2016 Volume 16(Issue 1) pp:265-276
Publication Date(Web):December 21, 2015
DOI:10.1021/acs.cgd.5b01226
A new family of polyoxovanadates-based inorganic–organic hybrid compounds with multiple Lewis basic sites, namely, [Zn5(Htrb)2(H2O)2(V5O15)2]·11H2O (1), [Zn2(Htrb)(HV5O15)]·6H2O (2), [Co3(Htrb)(H2O)4(V3O9)2]·4H2O (3), and [Ag3(Htrb)(H4V5O16)]·H2O (4), have been hydrothermal synthesized by using a multidentate N-containing hexakis(1,2,4-triazol-ylmethy1)benzene (Htrb). In 1, [V4O12]4– and [V6O18]6– rings are linked by Zn(II) ions into a two-dimensional (2D) inorganic layer, which are pillared by Htrb ligands to afford a unique three-dimensional (3D) framework. In 2, rod-shaped [H2V10O30]8– clusters are bridged by Zn(II) ions to generate one-dimensional inorganic hybrid motifs, which are joined by Htrb ligands to yield a 3D framework. In 3, Co(II) ions bridge [V6O18]6– rings to result in a 2D inorganic sheet, and the adjacent sheets are extended by the Htrb ligands into a 3D motif. In 4, adjacent 12-membered vanadium rings, composed of [VO4] tetrahedra and [VO5] trigonal bipyramids, form a unique 2D inorganic layer via sharing corner O atoms. Strikingly, neighboring layers are further extended by Htrb ligands and Ag(I) ions into a 3D framework. Moreover, photocatalytic degradation of compounds 1, 3, and 4 toward methylene blue (MB) and methyl orange (MO) was studied under UV light irradiation. A possible photocatalytic mechanism was also speculated by introducing t-butyl alcohol as a widely used ·OH scavenger. In addition, luminescent selective and sensitive sensing of Cr3+ compared with other metal ions such as Zn2+, Al3+, Co2+, K+, Na+, and Pb2+ were investigated by using 1 and 4. Finally, their electrochemical behaviors were also studied.
Co-reporter:Hang Zhang, Jin Yang, Ying-Ying Liu, Shu-Yan Song, Xiao-Li Liu, Jian-Fang Ma
Dyes and Pigments 2016 Volume 133() pp:189-200
Publication Date(Web):October 2016
DOI:10.1016/j.dyepig.2016.05.051
•A family of polyoxometalates-based hybrid compounds have been synthesized.•The compounds exhibit an efficient photocatalysis for the removal of dyes.•The oxidative desulfurization was investigated with the use of 1–4 as catalysts.A new family of polyoxometalates-based inorganic–organic hybrid compounds, namely, [Ag4(H2O)(L)3(SiW12O40)] (1), [Zn(L)(H2O)]2[SiW12O40]·3H2O (2), [Cu(L)(H2O)]2[SiW12O40] (3), and [Cu2(L)2(HPWVI10WV2O40)]·4H2O (4), have been synthesized (L = 1,4–bis(3-(2-pyridyl)pyrazol)butane). This series of inorganic–organic hybrid compounds exhibit variable supramolecular architectures. The photodegradation of organic dyes malachite green and methylene blue with the use of compounds 1–4 as photocatalysts was studied under visible light irradiation. Strikingly, the photocatalytic result demonstrates that compound 1 is an efficient photocatalyst for the removal of malachite green and methylene blue. Remarkably, compound 1 serves as an active and recyclable photocatalyst for the reduction of CrVI with isopropanol as scavenger at ambient temperature. The catalytic oxidative desulfurization of thioanisole was also investigated with the use of compounds 1–4 as catalysts and tert-butyl hydroperoxide as oxidant. The catalytic results indicate that compounds 3 and 4 behave high catalytic performance for the oxidation of the thioanisole.
Co-reporter:Hang Zhang, Jin Yang, Ying-Ying Liu, Shuyan Song, and Jian-Fang Ma
Crystal Growth & Design 2016 Volume 16(Issue 6) pp:3244-3255
Publication Date(Web):April 27, 2016
DOI:10.1021/acs.cgd.6b00213
By utilizing a new chair-conformation resorcin[4]arene-based octacarboxylate ligand, four functional metal–organic frameworks (MOFs), namely, [(CH3)2NH2]4[Cd2(L)]·4H2O (1), [(CH3)2NH2]4[Zn2(L)]·2DMF·6H2O (2), [(CH3)2NH2]4[Co2(L)]·2DMF·4H2O (3), and [(CH3)2NH2]2[Co3(L)(H2O)12] (4) (H8L = 2,8,14,20-tetra-methylphenyl-4,6,10,12,16,18,22,24-octa-carboxymethoxy-resorcin[4]arene and DMF = N,N-dimethylformamide), were solvothermally synthesized and structurally characterized. In 1, each L8– anion bridges eight Cd(II) atoms to give a three-dimensional (3D) (4,8)-connected (46)(412.610.86) framework. In isostructural 2 and 3, each L8– anion links eight adjacent Zn(II) or Co(II) atoms to yield a 3D (4,8)-connected (46)(411.612.85) net. In 4, each L8– anion only bridges four Co(II) atoms by using its four carboxylates each in a monodentate coordination mode to generate an infinite one-dimensional (1D) chain. Remarkably, the highly selective luminescent sensing of amine and aldehyde vapors was studied for 1 and 2 as fluorescent sensors. Importantly, a solvent-induced structural transformation from the 1D chain to the 3D porous framework between 3 and 4 was also investigated in detail.
Co-reporter:Yuan-Chun He, Jin Yang, Wei-Qiu Kan, Hong-Mei Zhang, Ying-Ying Liu and Jian-Fang Ma
Journal of Materials Chemistry A 2015 vol. 3(Issue 4) pp:1675-1681
Publication Date(Web):05 Dec 2014
DOI:10.1039/C4TA05391E
We report a new microporous negatively charged metal–organic framework (MOF), [(C2H5)2NH2]2[Mn6(L)(OH)2(H2O)6]·4DEF (1) (H12L = 5,5′,5′′,5′′′,5′′′′,5′′′′′-[1,2,3,4,5,6-phenylhexamethoxyl]hexaisophthalic acid and DEF = N,N′-diethylformamide), and its utilization as a platform for the highly selective adsorption and separation of organic dyes through an ion-exchange process. The dynamics of selective adsorption, separation and release of a series of organic dyes demonstrated that this exchange-based separation process is highly related to the sizes or charges of organic dyes, and this relationship can be controlled by the structural characteristics of MOF 1.
Co-reporter:Li−Li Lv, Jin Yang, Hong-Mei Zhang, Ying-Ying Liu, and Jian-Fang Ma
Inorganic Chemistry 2015 Volume 54(Issue 4) pp:1744-1755
Publication Date(Web):January 16, 2015
DOI:10.1021/ic502686b
By using a new resorcin[4]arene-based tetracarboxylate, three functional coordination polymers (CPs)—namely, [(CH3)2NH2][Cd2NaL(HCOO)2(HCOOH)(H2O)]·H2O (1), [(CH3)2NH2]2[CdL]·CH3OH·4H2O (2), and [(CH3)2NH2][Zn2Na3L2(H2O)2]·H2O (3)—have been synthesized under solvothermal conditions (H4L = 2,8,14,20-tetra-pentyl-4,10,16,22-tetrakis((4-carboxybenzyl)oxy)-6,12,18,24-tetra-methoxy-resorcin[4]arene and DMF = N,N′-dimethylformamide). The structures of 1–3 have been confirmed by single-crystal X-ray diffraction analyses and further physically characterized. In 1, L and HCOO– link Cd(II) and Na(I) ions to yield an unusual three-dimensional (3D) 4-connected heterometallic framework with (42·64)(4·83·10·12) topology. In 2, L anions link Cd(II) ions to give a 3D binodal 4-connected framework with (42·63·8)2 topology. In 3, adjacent dodecanuclear heterometallic clusters are joined together by L anions, yielding a two-dimensional (2D) (3,8)-connected (3·42)(34·46·56·68·73·8) network. Most strikingly, CPs 1 and 2 display unusual metal-ion exchange characters. CP 2 shows remarkable reversible adsoption of I2 molecules. In addition, CPs 1–3 can selectively adsorb organic dyes and exhibit highly luminescent sensing properties for small molecules.
Co-reporter:Yu-Jing Hu, Jin Yang, Ying-Ying Liu, Shuyan Song, and Jian-Fang Ma
Crystal Growth & Design 2015 Volume 15(Issue 8) pp:3822
Publication Date(Web):July 2, 2015
DOI:10.1021/acs.cgd.5b00469
A series of novel capsule-based coordination polymers (CPs), namely, [Cd(TTR4A)(L1)]·2.5H2O (1), [Cd(TTR4A)(L2)]·2DMF·2H2O (2), [Cd(TTR4A)(L3)]·2DMF·1.5H2O (3), [Cd(TTR4A)(L4)]·1.5H2O (4), and [Zn(TTR4A)(L1)]·DMF·H2O (5), have been synthesized via the reaction of a bowl-like tetrakis(1,2,4-triazol-ylmethylresorcin[4]arene (TTR4A) ligand with d10 metal salts in the presence of varied dicarboxylates (H2L1 = fumaric acid, H2L2 = 1,3-benzenedicarboxylic acid, H2L3 = 5-hydroxy-1,3-benzenedicarboxylic acid, H2L4 = biphenylethene-4,4′-dicarboxylic acid, and DMF = N,N-dimethylformamide). CPs 1–3 show rare two-dimensional (2D) capsule-based network structures. In 1–3, two TTR4A bowls share two Cd(II) cations to give a capsule, which is further extended by the dicarboxylates into 2D networks. CP 4 features a fascinating three-dimensional 3-connected framework structure constructed from bowl-like [Cd2TTR4A] units and L4 anions. In 5, each TTR4A coordinates with two Zn(II) cations by using two 1,2,4-triazole groups to generate a capsule, which is further connected by L1 ligands to afford a 2D network structure. Significantly, solid-state emissions and temperature variable luminescence were studied for 1–4. In particular, the remarkable metal-ion exchange property of CP 1 was investigated.
Co-reporter:Hong-Mei Zhang, Jin Yang, Ying-Ying Liu, Da-Wei Kang and Jian-Fang Ma
CrystEngComm 2015 vol. 17(Issue 16) pp:3181-3196
Publication Date(Web):26 Mar 2015
DOI:10.1039/C5CE00181A
Nine new coordination polymers, namely, [Mn5(HL)2(H2O)2]·2C2H5OH·4H2O (1), Mn3(L)(phen)2 (2), Mn3(L)(2,2′-bpy)2 (3), Cd3(L)(2,2′-bpy)2 (4), Cd3(L)(phen)2 (5), Co2Na(HL)(phen)2·0.5C2H5OH·H2O (6), Co3(L)(4,4′-bpy) (7), Cu2(H2L)(4,4′-bpy)4·0.5H2O (8) and Cu2(H2L)(ttp)2·2C2H5OH·2H2O (9), have been synthesized under hydrothermal conditions (H6L = 1,2,3,4,5,6-hexakis(3-carboxyphenyloxymethylene)benzene, phen = 1,10-phenathroline, 2,2′-bpy = 2,2′-bipyridine, 4,4′-bpy = 4,4′-bipyridine and ttp = 2-(6-(pyridin-2-yl)-4-p-tolylpyridin-2-yl)pyridine). Compound 1 shows a 2D layer structure. Compounds 2–5 display similar 2D networks, which are further extended into a 3D supramolecular architecture by π–π interactions. Compound 6 exhibits a 3D binodal 4-connected framework with (42638)2 topology. Compound 7 furnishes a 3D (4,6)-connected framework with (4462)(446108) topology. Compound 8 reveals a 3D 4-connected framework with 66 topology. Compound 9 displays a 1D chain structure, which is further linked by hydrogen-bonding interactions to yield a 3D supramolecular architecture. Moreover, the diffuse reflectivity spectra of all the compounds, the solid state photoluminescence properties of compounds 4–5, and magnetic properties of compounds 1, 3, 6 and 7 were studied.
Co-reporter:Yun-Bo Dong, Hua-Yu Shi, Jin Yang, Ying-Ying Liu, and Jian-Fang Ma
Crystal Growth & Design 2015 Volume 15(Issue 3) pp:1546-1551
Publication Date(Web):February 23, 2015
DOI:10.1021/acs.cgd.5b00099
Assemblies of two methylresorcin[4]arene cavitands with Bu2SnO and n-BuSn(O)OH afforded four organooxotin-cluster-based compounds, namely, [(Bu2Sn)2(μ3-O)(L1)(EtO)]2·2EtOH (1), [(Bu2Sn)2(μ3-O)(L2)(EtO)]2·2EtOH (2), [(BuSn)12(μ3-O)14(μ2-OH)6](L1)2·2EtOH (3), and [(BuSn)(μ3-O)(L2)]6·6(toluene) (4) (HL1 = methylresorcin[4]arene cavitand-C1-COOH-in and HL2 = methylresorcin[4]arene cavitand-C1-COOH-out). It is the first time that the methylresorcin[4]arene cavitands were successfully incorporated into the organooxotin clusters. Both 1 and 2 exhibit similar dumbbell-like structures, where the skeletons of methylresorcin[4]arene cavitands stretch in different directions on account of the different configurations of the carboxylate groups of L1 and L2 anions. As a result, the C–H···π interactions lead to slightly distinct 1D supramolecular architectures of 1 and 2. 3 displays a sandwich-like structure based on one [(BuSn)12(μ3-O)14(μ2-OH)6]2+ macrocation and two L1 anions, where the macrocation is trapped in the dimeric L1 anions through O–H···O hydrogen-bonding interactions. The sandwiches further stack through π–π interactions to afford a supramolecular dimer. 4 exhibits an unusual giant paddle-wheel motif composed of a typical Sn6O6 drum and six L2 anions. Further, the paddle-wheel motifs are extended by π–π interactions to give a supramolecular layer. Moreover, the luminescent properties of 2 and 4 and the preliminary anticancer activity of 4 were also investigated.
Co-reporter:Dr. Jing Li;Dr. Jin Yang;Dr. Ying-Ying Liu ;Dr. Jian-Fang Ma
Chemistry - A European Journal 2015 Volume 21( Issue 11) pp:4413-4421
Publication Date(Web):
DOI:10.1002/chem.201406349
Abstract
Two examples of heterometallic–organic frameworks (HMOFs) composed of dicarboxyl-functionalized FeIII-salen complexes and d10 metals (Zn, Cd), [Zn2(Fe-L)2(μ2-O)(H2O)2]⋅4 DMF⋅4 H2O (1) and [Cd2(Fe-L)2(μ2-O)(H2O)2]⋅2 DMF ⋅H2O (2) (H4L=1,2-cyclohexanediamino-N,N′-bis(3-methyl-5-carboxysalicylidene), have been synthesized and structurally characterized. In 1 and 2, each square-pyramidal FeIII atom is embedded in the [N2O2] pocket of an L4− anion, and these units are further bridged by a μ2-O anion to give an (Fe-L)2(μ2-O) dimer. The two carboxylate groups of each L4− anion bridge ZnII or CdII atoms to afford a 3D porous HMOF. The gas sorption and magnetic properties of 1 and 2 have been studied. Remarkably, 1 and 2 show activity for the photocatalytic degradation of 2-chlorophenol (2-CP) under visible-light irradiation, which, to the best of our knowledge, is the first time that this has been observed for FeIII-salen-based HMOFs.
Co-reporter:Dr. Shuai-Tong Zhang;Dr. Jin Yang;Dr. Hua Wu;Dr. Ying-Ying Liu;Dr. Jian-Fang Ma
Chemistry - A European Journal 2015 Volume 21( Issue 44) pp:15806-15819
Publication Date(Web):
DOI:10.1002/chem.201501976
Abstract
A new family of resorcin[4]arene-based metal–organic frameworks (MOFs), namely, [Eu(HL)(DMF)(H2O)2]⋅3 H2O (1), [Tb(HL)(DMF)(H2O)2] 3 H2O (2), [Cd4(L)2(DMF)4(H2O)2] 3 H2O (3) and [Zn3(HL)2(H2O)2] 2 DMF⋅7 H2O (4), have been constructed from a new resorcin[4]arene-functionalized tetracarboxylic acid (H4L=2,8,14,20-tetra-ethyl-6,12,18,24-tetra-methoxy-4,10,16,22-tetra-carboxy-methoxy-calix[4]arene). Isostructural 1 and 2 exhibit charming 1D motifs built with the cup-like HL3− anions and rare earth cations. Compounds 3 and 4 show a unique sandwich-based 2D layer and a fascinating 3D framework, respectively. Remarkably, compounds 1 and 2 display intensive red and green emissions triggered by the efficient antenna effect of organic ligands under UV light. More importantly, systematic luminescence studies demonstrate that Ln-MOFs 1 and 2, as efficient multifunctional fluorescent materials, show highly selective and sensitive sensing of Fe3+, polyoxometalates (POMs), and acetone, which represents a rare example of a sensor for quantitatively detecting three different types of analytes. This is also an exceedingly rare example of Fe3+ and POMs detection in aqueous solutions employing resorcin[4]arene-based luminescent Ln-MOFs. Furthermore, the possible mechanism of the sensing properties is deduced.
Co-reporter:Yuan-Chun He, Jin Yang, Ying-Ying Liu, and Jian-Fang Ma
Inorganic Chemistry 2014 Volume 53(Issue 14) pp:7527-7533
Publication Date(Web):July 1, 2014
DOI:10.1021/ic5008457
A highly stable soft porous coordination polymer (PCP), namely [Cu3(TP)4(N3)2(DMF)2]·2H2O·2DMF (1), has been synthesized via an in situ synthesis of 4-tetrazole pyridine (TP) under solvothermal conditions (DMF = N,N′-dimethylformamide). Remarkably, the solvent molecules in 1 can be respectively exchanged with cyclohexane (C6H12), cyclopentane (C5H10), decahydronaphthalene (C10H18), 1,4-dioxane (C4H8O2), and tetrahydropyrane (C5H10O) in single-crystal to single-crystal (SCSC) manners to yield [Cu3(TP)4(N3)2(DMF)2]·3C6H12 (1a), [Cu3(TP)4(N3)2(DMF)2]·2C5H10 (1b), [Cu3(TP)4(N3)2(DMF)2]·H2O·C10H18 (1c), [Cu3(TP)4(N3)2(DMF)2]·C4H8O2 (1d), [Cu3(TP)4(N3)2]·3C4H8O2 (1e), and [Cu3(TP)4(N3)2]·2H2O·C5H10O (1f). Further, the occluded cyclohexane molecules in 1a can be removed by heating to give its porous guest-free form [Cu3(TP)4(N3)2(DMF)2] (1g). Particularly, in water, 1 can lose its coordinated N3– anions to generate [Cu(TP)2(H2O)4]·4H2O (1h). More interestingly, the soft PCP (1) demonstrates the guest selectivity for the cycloalkane solvents, namely cyclohexane, cyclopentane, and decahydronaphthalene, in SCSC manners for the first time, attributed to the synergy effect between the size and geometry of the solvent and the shape of the framework cavity. Moreover, the desolvated samples of 1e show the highly selective gas adsorption of CO2 over N2, indicating its potential application in the separation of the CO2/N2 mixture.
Co-reporter:Hang Zhang, Wei Jiang, Jin Yang, Ying-Ying Liu, Shuyan Song and Jian-Fang Ma
CrystEngComm 2014 vol. 16(Issue 42) pp:9939-9946
Publication Date(Web):24 Sep 2014
DOI:10.1039/C4CE01581A
Four novel coordination polymers, [(CH3)2NH2][Zn3(HL)(H2O)2]·4H2O (1), [Co4(L)(DMF)2(H2O)8]·6H2O (2), [Ni4(L)(DMF)2(H2O)8]·6H2O (3) and [(CH3)2NH2][Mn3(HL)(DMF)(H2O)6]·6H2O (4) (H8L = 2,8,14,20-tetra-methyl-4,6,10,12,16,18,22,24-octa-carboxymethoxy-calix[4]arene and DMF = N,N-dimethylformamide) have been synthesized. Their structures have been confirmed and further characterized by relative physical methods. Compound 1 reveals a 2D double layer. Compounds 2 and 3 are isomorphous, and demonstrate identical 3D (3,6)-connecting nets with (42·6)(44·62·88·10) topologies. Compound 4 features a 3D binodal 5-connected (46·64)(46·64) framework. The UV-vis spectra of compounds 1–4 have been explored. The solid-state luminescence of compound 1 and its fluorescence property in various suspensions has also been investigated at room temperature. Moreover, the luminescence sensing properties of 1 for nitroaromatic compounds have been studied in detail.
Co-reporter:Wei Jiang, Hang Zhang, Jin Yang, Ying-Ying Liu, Hai-Yan Liu and Jian-Fang Ma
CrystEngComm 2014 vol. 16(Issue 41) pp:9638-9644
Publication Date(Web):08 Sep 2014
DOI:10.1039/C4CE01376J
Three new resorcin[4]arene-based coordination polymers, [Cd3L(H2L)(H2O)2]·2DMF·11.5H2O (1), [Zn4L2(H2O)4]·2DMF·10H2O (2) and [Mn9L4(HCOO)2(H2O)12·(DMF)2]·2DMF·10H2O (3) (H4L = tetrakis(ω-carboxybutyl)methylene resorcin[4]arene, DMF = N,N′-dimethylformamide), have been solvothermally synthesized. Compounds 1–3 are all bilayer structures constructed by secondary building units (SBUs), where trinuclear clusters are found in 1 and infinite rod-shaped chains are observed in 2 and 3. Strikingly, compounds 1–3 display partial Cu(II)-exchange characteristics. The solid-state emission spectra and fluorescence sensing abilities of 1 and 2 to detect polyoxometalates (POMs) in aqueous solutions were studied.
Co-reporter:Chong-Qing Wan, Hao-Jie Yan, Zi-Jia Wang, Jin Yang
Polyhedron 2014 Volume 83() pp:116-121
Publication Date(Web):24 November 2014
DOI:10.1016/j.poly.2014.05.043
A family of Ag(I) complexes constructed from the unsymmetrical bent-shaped ligand 2-(pyridine-4-ylthio)pyrazine (abbreviated as 2-PTP), namely [Ag(2-PTP)2]·ClO4 (1), {[Ag2(2-PTP)2(CF3CO2)2]·(H2O)}∞ (2), {[Ag(2-PTP)(NO2)]}∞ (3), {[Ag3(2-PTP)2(CF3SO3)2]·(CF3SO3)·(H2O)}∞ (4) and {[Ag2(2-PTP)2(SO4)]·9H2O}∞ (5), has been synthesized by varying the silver(I) salts. These complexes have been characterized by single crystal X-ray diffraction, FT-IR spectra and elemental analyses. In 1–5, the 2-PTP ligand adopts versatile coordination modes with various silver(I) salts to generate a series of supramolecular architectures. Weak interactions, such as hydrogen bonding and π⋯π interactions, have been described in detail. The anion influence on the structural diversities of 1–5 has also been discussed.Graphical abstractFive Ag(I) complexes constructed by the unsymmetrical bent-shaped ligand 2-(pyridine-4-ylthio)pyrazine (2-PTP) have been synthesized with various silver(I) salts, and the anion influence on the structural diversities has been discussed.
Co-reporter:Hai-Yan Liu, Guang-Hui Wang, Jin Yang, Ying-Ying Liu, Jian-Fang Ma
Inorganic Chemistry Communications 2014 50() pp: 92-96
Publication Date(Web):
DOI:10.1016/j.inoche.2014.10.031
Co-reporter:Wei Jiang, Jin Yang, Ying-Ying Liu and Jian-Fang Ma
Chemical Communications 2016 - vol. 52(Issue 7) pp:NaN1376-1376
Publication Date(Web):2015/11/30
DOI:10.1039/C5CC08456C
By using a new porphyrin-based linker, two unusual mixed-valent Ag(I,II)– and Cu(I,II)–organic networks were synthesized. Most strikingly, 1 and 2 exhibit highly efficient catalytic activities for the azide–alkyne “click” reaction and oxidation of ethylbenzene.
Co-reporter:Yuan-Chun He, Jin Yang, Wei-Qiu Kan, Hong-Mei Zhang, Ying-Ying Liu and Jian-Fang Ma
Journal of Materials Chemistry A 2015 - vol. 3(Issue 4) pp:NaN1681-1681
Publication Date(Web):2014/12/05
DOI:10.1039/C4TA05391E
We report a new microporous negatively charged metal–organic framework (MOF), [(C2H5)2NH2]2[Mn6(L)(OH)2(H2O)6]·4DEF (1) (H12L = 5,5′,5′′,5′′′,5′′′′,5′′′′′-[1,2,3,4,5,6-phenylhexamethoxyl]hexaisophthalic acid and DEF = N,N′-diethylformamide), and its utilization as a platform for the highly selective adsorption and separation of organic dyes through an ion-exchange process. The dynamics of selective adsorption, separation and release of a series of organic dyes demonstrated that this exchange-based separation process is highly related to the sizes or charges of organic dyes, and this relationship can be controlled by the structural characteristics of MOF 1.
![Pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(25),3,5,7(28),9,11,13(27),15,17,19(26),21,23-dodecaene-4,10,16,22-tetrol, 6,12,18,24-tetramethoxy-2,8,14,20-tetrapentyl-](/data/chemimg/3724300/1018448-28-6.png)
![Pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(25),3,5,7(28),9,11,13(27),15,17,19(26),21,23-dodecaene-4,10,16,22-tetrol, 6,12,18,24-tetramethoxy-2,8,14,20-tetrapentyl-](/data/chemimg/3724300/1018448-28-6_b.png)
![1H-1,2,3-Triazole, 1-[(4-fluorophenyl)methyl]-4-phenyl-](/data/chemimg/2342000/848950-93-6.png)
![1H-1,2,3-Triazole, 1-[(4-fluorophenyl)methyl]-4-phenyl-](/data/chemimg/2342000/848950-93-6_b.png)
![SILVER, [[4-(1,1-DIMETHYLETHYL)PHENYL]ETHYNYL]-](http://img.cochemist.com/ccimg/765300/765287-43-2.png)
![SILVER, [[4-(1,1-DIMETHYLETHYL)PHENYL]ETHYNYL]-](http://img.cochemist.com/ccimg/765300/765287-43-2_b.png)
![Propanedinitrile, [(4-ethylphenyl)methylene]-](http://img.cochemist.com/ccimg/215900/215817-85-9.png)
![Propanedinitrile, [(4-ethylphenyl)methylene]-](http://img.cochemist.com/ccimg/215900/215817-85-9_b.png)
![1H-Imidazo[4,5-f][1,10]phenanthroline, 2-phenyl-](/data/chemimg/133600/171565-44-9.png)
![1H-Imidazo[4,5-f][1,10]phenanthroline, 2-phenyl-](/data/chemimg/133600/171565-44-9_b.png)
![Acetic acid, 2,2',2'',2'''-[pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(25),3,5,7(28),9,11,13(27),15,17,19(26),21,23-dodecaene-25,26,27,28-tetrayltetrakis(oxy)]tetrakis-](/data/chemimg/3724200/154160-91-5.png)
![Acetic acid, 2,2',2'',2'''-[pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(25),3,5,7(28),9,11,13(27),15,17,19(26),21,23-dodecaene-25,26,27,28-tetrayltetrakis(oxy)]tetrakis-](/data/chemimg/3724200/154160-91-5_b.png)
![1H-1,2,3-Triazole, 1-[(3-methylphenyl)methyl]-4-phenyl-](/data/chemimg/3722400/126800-03-1.png)
![1H-1,2,3-Triazole, 1-[(3-methylphenyl)methyl]-4-phenyl-](/data/chemimg/3722400/126800-03-1_b.png)
![1H-1,2,3-Triazole, 1-[(4-methylphenyl)methyl]-4-phenyl-](/data/chemimg/3722400/126800-02-0.png)
![1H-1,2,3-Triazole, 1-[(4-methylphenyl)methyl]-4-phenyl-](/data/chemimg/3722400/126800-02-0_b.png)
![Acetic acid, 2,2',2'',2'''-[[5,11,17,23-tetrakis(1,1-dimethylethyl)pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(25),3,5,7(28),9,11,13(27),15,17,19(26),21,23-dodecaene-25,26,27,28-tetrayl]tetrakis(oxy)]tetrakis-](/data/chemimg/2289000/113215-72-8.png)
![Acetic acid, 2,2',2'',2'''-[[5,11,17,23-tetrakis(1,1-dimethylethyl)pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(25),3,5,7(28),9,11,13(27),15,17,19(26),21,23-dodecaene-25,26,27,28-tetrayl]tetrakis(oxy)]tetrakis-](/data/chemimg/2289000/113215-72-8_b.png)
![Pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(25),3,5,7(28),9,11,13(27),15,17,19(26),21,23-dodecaene-5,11,17,23-tetrasulfonic acid, 25,26,27,28-tetrahydroxy-, sodium salt (1:4)](http://img.cochemist.com/data/images/110242-20-1.png)
![Pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(25),3,5,7(28),9,11,13(27),15,17,19(26),21,23-dodecaene-5,11,17,23-tetrasulfonic acid, 25,26,27,28-tetrahydroxy-, sodium salt (1:4)](http://img.cochemist.com/data/images/110242-20-1_b.png)
![1H,3H-Naphtho[1,8-cd]pyran-1,3-dione, 6-(1-piperidinyl)-](http://img.cochemist.com/ccimg/87300/87223-12-9.png)
![1H,3H-Naphtho[1,8-cd]pyran-1,3-dione, 6-(1-piperidinyl)-](http://img.cochemist.com/ccimg/87300/87223-12-9_b.png)
![Acetic acid, 2,2'-[1,3-phenylenebis(oxy)]bis-, dimethyl ester](http://img.cochemist.com/ccimg/85800/85784-34-5.png)
![Acetic acid, 2,2'-[1,3-phenylenebis(oxy)]bis-, dimethyl ester](http://img.cochemist.com/ccimg/85800/85784-34-5_b.png)
![1H-Imidazole, 1,1'-[1,4-phenylenebis(methylene)]bis[2-methyl-](/data/chemimg/1337600/82410-79-5.png)
![1H-Imidazole, 1,1'-[1,4-phenylenebis(methylene)]bis[2-methyl-](/data/chemimg/1337600/82410-79-5_b.png)
![3-Butenenitrile, 4-phenyl-2-[(trimethylsilyl)oxy]-, (3E)-](http://img.cochemist.com/ccimg/79300/79248-45-6.png)
![3-Butenenitrile, 4-phenyl-2-[(trimethylsilyl)oxy]-, (3E)-](http://img.cochemist.com/ccimg/79300/79248-45-6_b.png)
![SILVER, [(4-METHYLPHENYL)ETHYNYL]-](http://img.cochemist.com/ccimg/66600/66582-14-7.png)
![SILVER, [(4-METHYLPHENYL)ETHYNYL]-](http://img.cochemist.com/ccimg/66600/66582-14-7_b.png)
![Benzoic acid, 4-[[(4-carboxyphenyl)amino]methyl]-](http://img.cochemist.com/ccimg/64600/64518-63-4.png)
![Benzoic acid, 4-[[(4-carboxyphenyl)amino]methyl]-](http://img.cochemist.com/ccimg/64600/64518-63-4_b.png)
![2,2'-[ethane-1,2-diylbis(oxy)]dibenzaldehyde](http://img.cochemist.com/ccimg/52200/52118-10-2.png)
![2,2'-[ethane-1,2-diylbis(oxy)]dibenzaldehyde](http://img.cochemist.com/ccimg/52200/52118-10-2_b.png)
![Propanedinitrile, 2-[(2E)-3-phenyl-2-propen-1-ylidene]-](/data/chemimg/3180500/41109-96-0.png)
![Propanedinitrile, 2-[(2E)-3-phenyl-2-propen-1-ylidene]-](/data/chemimg/3180500/41109-96-0_b.png)
![1H,3H-Naphtho[1,8-cd]pyran-1,3-dione,6-(4-morpholinyl)-](http://img.cochemist.com/ccimg/31900/31837-36-2.png)
![1H,3H-Naphtho[1,8-cd]pyran-1,3-dione,6-(4-morpholinyl)-](http://img.cochemist.com/ccimg/31900/31837-36-2_b.png)
![Dipyrido[3,2-a:2',3'-c]phenazine](/data/chemimg/1778900/19535-47-8.png)
![Dipyrido[3,2-a:2',3'-c]phenazine](/data/chemimg/1778900/19535-47-8_b.png)
![Tungstate(6-),hexatriaconta-m-oxooctadecaoxobis[m9-[phosphato(3-)-kO:kO:kO:kO':kO':kO'':kO'':kO''':kO''']]octadeca-, hydrogen (1:6)](http://img.cochemist.com/ccimg/12500/12411-74-4.png)
![Tungstate(6-),hexatriaconta-m-oxooctadecaoxobis[m9-[phosphato(3-)-kO:kO:kO:kO':kO':kO'':kO'':kO''':kO''']]octadeca-, hydrogen (1:6)](http://img.cochemist.com/ccimg/12500/12411-74-4_b.png)
![[1-(4-AMINOPHENYL)ETHYLIDENEAMINO]THIOUREA](http://img.cochemist.com/ccimg/7500/7410-53-9.png)
![[1-(4-AMINOPHENYL)ETHYLIDENEAMINO]THIOUREA](http://img.cochemist.com/ccimg/7500/7410-53-9_b.png)
![Benzoic acid,4-[(3-pyridinylmethyl)amino]-](http://img.cochemist.com/ccimg/6000/5966-19-8.png)
![Benzoic acid,4-[(3-pyridinylmethyl)amino]-](http://img.cochemist.com/ccimg/6000/5966-19-8_b.png)
![2-[4-(1h-benzimidazol-2-yl)butyl]-1h-benzimidazole](http://img.cochemist.com/ccimg/4800/4746-56-9.png)
![2-[4-(1h-benzimidazol-2-yl)butyl]-1h-benzimidazole](http://img.cochemist.com/ccimg/4800/4746-56-9_b.png)
![Propanedinitrile,2-[(4-methoxyphenyl)methylene]-](http://img.cochemist.com/ccimg/2900/2826-26-8.png)
![Propanedinitrile,2-[(4-methoxyphenyl)methylene]-](http://img.cochemist.com/ccimg/2900/2826-26-8_b.png)
![2-[(4-methylphenyl)methylidene]propanedinitrile](http://img.cochemist.com/ccimg/2900/2826-25-7.png)
![2-[(4-methylphenyl)methylidene]propanedinitrile](http://img.cochemist.com/ccimg/2900/2826-25-7_b.png)
![1,3-Propanediol,2,2-bis[[[(4-methylphenyl)sulfonyl]oxy]methyl]-,1,3-bis(4-methylbenzenesulfonate)](http://img.cochemist.com/ccimg/1600/1522-89-0.png)
![1,3-Propanediol,2,2-bis[[[(4-methylphenyl)sulfonyl]oxy]methyl]-,1,3-bis(4-methylbenzenesulfonate)](http://img.cochemist.com/ccimg/1600/1522-89-0_b.png)
![1,3-Dioxolan-2-one,4-[(phenylmethoxy)methyl]-](http://img.cochemist.com/ccimg/1000/949-97-3.png)
![1,3-Dioxolan-2-one,4-[(phenylmethoxy)methyl]-](http://img.cochemist.com/ccimg/1000/949-97-3_b.png)
![Benzenesulfonic acid,4-[2-[4-(dimethylamino)phenyl]diazenyl]-](http://img.cochemist.com/ccimg/600/502-02-3.png)
![Benzenesulfonic acid,4-[2-[4-(dimethylamino)phenyl]diazenyl]-](http://img.cochemist.com/ccimg/600/502-02-3_b.png)
![Pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(25),3,5,7(28),9,11,13(27),15,17,19(26),21,23-dodecaene-4,10,16,22-tetrol, 2,8,14,20-tetraethyl-6,12,18,24-tetramethoxy-](/data/chemimg/3724400/1017818-92-6.png)
![Pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(25),3,5,7(28),9,11,13(27),15,17,19(26),21,23-dodecaene-4,10,16,22-tetrol, 2,8,14,20-tetraethyl-6,12,18,24-tetramethoxy-](/data/chemimg/3724400/1017818-92-6_b.png)
![Benzoic acid, 4,4'-[[2,2-bis[(4-carboxyphenoxy)methyl]-1,3-propanediyl]bis(oxy)]bis-](/data/chemimg/3723700/245551-35-3.png)
![Benzoic acid, 4,4'-[[2,2-bis[(4-carboxyphenoxy)methyl]-1,3-propanediyl]bis(oxy)]bis-](/data/chemimg/3723700/245551-35-3_b.png)
![Benzoic acid, 2-[[(4-carboxyphenyl)methyl]amino]-](http://img.cochemist.com/ccimg/91600/91575-76-7.png)
![Benzoic acid, 2-[[(4-carboxyphenyl)methyl]amino]-](http://img.cochemist.com/ccimg/91600/91575-76-7_b.png)
![1,2-ETHANEDIAMINE, N,N,N',N'-TETRAKIS[(1H-BENZIMIDAZOL- 2-YL)METHYL]-](http://img.cochemist.com/ccimg/72600/72583-85-8.png)
![1,2-ETHANEDIAMINE, N,N,N',N'-TETRAKIS[(1H-BENZIMIDAZOL- 2-YL)METHYL]-](http://img.cochemist.com/ccimg/72600/72583-85-8_b.png)
![1,3-Benzenedicarboxylic acid, 5,5'-[1,2-ethanediylbis(oxy)]bis-](/data/chemimg/2310900/52739-95-4.png)
![1,3-Benzenedicarboxylic acid, 5,5'-[1,2-ethanediylbis(oxy)]bis-](/data/chemimg/2310900/52739-95-4_b.png)
![Tungstate(3-),tetracosa-m-oxododecaoxo[m12-[phosphato(3-)-kO:kO:kO:kO':kO':kO':kO'':kO'':kO'':kO''':kO''':kO''']]dodeca-,hydrogen (1:3)](http://img.cochemist.com/ccimg/1400/1343-93-7.png)
![Tungstate(3-),tetracosa-m-oxododecaoxo[m12-[phosphato(3-)-kO:kO:kO:kO':kO':kO':kO'':kO'':kO'':kO''':kO''':kO''']]dodeca-,hydrogen (1:3)](http://img.cochemist.com/ccimg/1400/1343-93-7_b.png)
![1H-1,2,4-Triazole, 1,1'-[[1,1'-biphenyl]-4,4'-diylbis(methylene)]bis-](/data/chemimg/102600/960041-69-4.png)
![1H-1,2,4-Triazole, 1,1'-[[1,1'-biphenyl]-4,4'-diylbis(methylene)]bis-](/data/chemimg/102600/960041-69-4_b.png)
![2,2':6',2''-Terpyridine, 4'-[4-(1,1-dimethylethyl)phenyl]-](http://img.cochemist.com/ccimg/157600/157557-32-9.png)
![2,2':6',2''-Terpyridine, 4'-[4-(1,1-dimethylethyl)phenyl]-](http://img.cochemist.com/ccimg/157600/157557-32-9_b.png)
![1H-Imidazole, 1,1'-[1,3-phenylenebis(methylene)]bis-](/data/chemimg/2348600/69506-92-9.png)
![1H-Imidazole, 1,1'-[1,3-phenylenebis(methylene)]bis-](/data/chemimg/2348600/69506-92-9_b.png)
![1H-Imidazole, 1,1'-[1,2-phenylenebis(methylene)]bis-](http://img.cochemist.com/ccimg/42100/42032-51-9.png)
![1H-Imidazole, 1,1'-[1,2-phenylenebis(methylene)]bis-](http://img.cochemist.com/ccimg/42100/42032-51-9_b.png)
![1H-Imidazole, 1,1'-[2,2-bis(1H-imidazol-1-ylmethyl)-1,3-propanediyl]bis-](/data/chemimg/860026-77-3.png)
![1H-Imidazole, 1,1'-[2,2-bis(1H-imidazol-1-ylmethyl)-1,3-propanediyl]bis-](/data/chemimg/860026-77-3_b.png)
![1H-1,2,4-Triazole, 1,1'-[1,4-phenylenebis(methylene)]bis-](/data/chemimg/105500/143131-66-2.png)
![1H-1,2,4-Triazole, 1,1'-[1,4-phenylenebis(methylene)]bis-](/data/chemimg/105500/143131-66-2_b.png)
![Benzenamine, 4-(1H-imidazol-1-yl)-N,N-bis[4-(1H-imidazol-1-yl)phenyl]-](/data/chemimg/3723700/1258947-79-3.png)
![Benzenamine, 4-(1H-imidazol-1-yl)-N,N-bis[4-(1H-imidazol-1-yl)phenyl]-](/data/chemimg/3723700/1258947-79-3_b.png)
