•Two new Co(II)-based CPs have been synthesized under hydrothermal conditions.•Compound 1 shows a 3D 2-fold interpenetrating hms framework.•Compound 2 reveals a typical 3D pcu net.•The magnetic properties of compounds 1 and 2 were explored.Two new Co(II)-based coordination polymers, [Co(HL)(H2O)2] (1) and [Co(HL)(bpy)]·H2O (2) (H3L = 5-((4-carboxyphenoxy)methyl)benzene-1,3-dioic acid, bpy = 4,4′-bipyridine), have been synthesized under hydrothermal conditions. The two compounds have been characterized by single crystal and powder X-ray diffraction analyses, infrared analyses, elemental analyses and thermogravimetric analyses. Compound 1 shows a 3D 2-fold interpenetrating hms framework, whereas compound 2 reveals a typical 3D pcu net. The UV–vis diffuse reflectance spectra of compounds 1 and 2 have been investigated. Moreover, the magnetic susceptibilities of compounds 1 and 2 have been studied.Two new Co(II)-based coordination polymers, [Co(HL)(H2O)2] (1) and [Co(HL)(bpy)]·H2O (2) (H3L = 5-((4-carboxyphenoxy)methyl)benzene-1,3-dioic acid, bpy = 4,4′-bipyridine), have been synthesized under hydrothermal conditions. Compound 1 shows a 3D 2-fold interpenetrating hms framework, whereas compound 2 reveals a typical 3D pcu net.Download high-res image (217KB)Download full-size image

It is a challenge to design and synthesize coordination polymers with high capacities as anode materials in Li-ion batteries at present. In this work, two compounds [Co2(ade)2(V4O12)(H2O)2] (1) and [Cd2(ade)2(V4O12)(H2O)2] (2) (ade = adenine) with high capacities have been successfully obtained through the sensible design strategy. In compounds 1 and 2, Co(II) and Cd(II) are linked by [V4O12]4− anion to form 2D inorganic layers which are further connected to generate final 3D frameworks. Both compounds 1 and 2 show good thermal stability according to the thermogravimetric analyses. The electrochemical performances of the two compounds as anode materials have been studied in detail. The results show compounds 1 and 2 have high reversible capacities and cyclic performances in Li-ion batteries.Two compounds [Co2(ade)2(V4O12)(H2O)2] (1) and [Cd2(ade)2(V4O12)(H2O)2] (2) (ade = adenine) have been hydrothermally synthesized. The electrochemical performances of compounds 1 and 2 as anode materials were studied in detail. The results show compounds 1 and 2 have high reversible capacities and cyclic performances in lithium ion batteries.Download high-res image (94KB)Download full-size image

A novel coordination polymer [Zn(HL)(bpy)(H2O)] (1) has been prepared by utilizing π-conjugated aromatic ligand 5-((4-carboxyphenoxy)methyl)benzene-1,3-dioic acid (H3L) and rigid ligand 4,4′-bipyridine (bpy) under the hydrothermal condition. Compound 1 has been characterized by single crystal X-ray diffraction, power X-ray diffraction, elemental analysis, and thermogravimetric analysis. The structure of 1 exhibits 3D supermolecular structure with π–π interactions and hydrogen-bonding interactions. The solid state luminescent emission intensity of compound 1 is strong at room temperature. The rapid and efficient response of 1 to Fe3+ ion suggests that this material could be used as a luminescent sensor for Fe3+ ion.A novel coordination polymer [Zn(HL)(bpy)(H2O)] (1) has been prepared by utilizing 5-((4-carboxyphenoxy)methyl)benzene-1,3-dioic acid (H3L) and 4,4′-bipyridine (bpy) under the hydrothermal condition. The luminescence properties of compound 1 show rapid and efficient detection of Fe3+ ion.Download high-res image (78KB)Download full-size image

•Compound 1 is the first example of polyoxomolybdate decorated by three phosphonate groups from one organotriphosphonic acid.•The UV–vis absorption spectrum of the compound has been investigated experimentally and theoretically.A novel organotriphosphoryl polyoxomolybdate, namely, [(CH3)4N][(CH3)3N][R(PO3H)2(PO3)]PMo9O28 (1), where R = C12H15, has been synthesized hydrothermally. The structure of 1 contains one trivacant [PMo9O34] subunit on which is grafted one R(POH)2(PO) through three P-O-Mo bridges. Compound 1 is the first example of polyoxomolybdate decorated by three phosphonate groups from one organotriphosphonic acid. The structure of the compound was determined by single-crystal X-ray diffraction analysis and further characterized by infrared spectrum (IR) and elemental analysis. Moreover, the UV–vis absorption spectrum of the compound has been investigated experimentally and theoretically.A novel organotriphosphoryl polyoxomolybdate has been prepared hydrothermally, where its absorption spectrum has been investigated experimentally and theoretically.

•Compound 1 displays a novel chiral highly connected structure.•Compound 1 is characterized by single-crystal X-ray diffraction analysis, EA, IR and UV–Vis spectra.•Compound 1 is a potential semiconductor with wide band gap.•The photoluminescent spectrum of compound 1 has been studied.A novel coordination polymer, namely, [Cd7(4,4′-tmbpt)3(d-cam)6(OH)2]·8.25H2O (1), where 4,4′-tmbpt = 1-((1H-1,2,4-triazol-1-yl)methyl)-3,5-bis(4-pyridyl)-1,2,4-triazole, and d-H2cam = d-camphoric acid, has been synthesized under hydrothermal condition. Compound 1 exhibits a three-dimensional homochiral (3,8,9)-connected framework, which is a rare example of coordination polymer with homochiral highly connected structure based on the chiral source of d-H2cam. The structure of the compound was determined by single-crystal X-ray diffraction analysis and further characterized by infrared spectrum (IR), elemental analysis and UV–Vis spectrum. Moreover, the optical band gap and photoluminescent property of the compound have been investigated.A novel coordination polymer with chiral highly connected structure has been prepared under hydrothermal condition, where its optical band gap and photoluminescent property have also been studied.