Two copper(I) halide-based coordination polymers, namely, [Cu3Cl2(Tipa)2]Cl (1, (Tipa = tris(4-(1H-imidazol-1-yl)phenyl)amine) and [Cu3I3(CuI)2(Tipa)3] (2), were obatined under the solvothermal reactions, respectively. Compound 1 with the chain structure shows unique Cu···Cu interactions, C–H···Cl halogen hydrogen bonds, and π···π stacking interactions. It also exhibits unusual mechanochromic and photocatalytic properties on degradation of methylene blue (MB).

In view of lithium ion with lower valance state and fewer coordination numbers, there is still a great challenge to prepare fascinating Li-cluster organic frameworks with structural diversity. The presence of lithium cubane cluster stimulates our interest of exploring new strategy for the construction of network based on polynuclear lithium units. In this work, we demonstrate that Li2O2 half-cubane cluster can be successfully applied as building block for the assembly of five new Li-organic frameworks, namely [Li2(Hip)(e-murea)2(H2O)](1), and [Li4(HiP)2(DMA)2](2), [Li2(Hip)(DMPU)(H2O)](3), [Li2(Hip)(H2O)](4) and [Li2(HiP)(DMF)(H2O)](5) (Hip = 5-hydroxyisophthalic acid, e-murea = 1, 3-dimethyl-2-imidazolidinone, DMPU = N,N-dimethylpropyleneurea, DMF = N,N-dimethylformamide, DMA = N,N-dimethylacetamide). Single crystal X-ray analysis revealed that the variation of the connection mode and angle of half-cubane cluster can be the critical factors in structural evolution.

A rare two-dimensional (2D) La(III) chiral hybrid organic–inorganic coordination polymer [La2(D-cam)2(CH3COO)2(DMA)4] (1 D-H2cam = D-camphoric acid; DMA = N,N-dimethylacetamide) based on paddle-wheel subunit has been solvothermally prepared and structurally characterized by single-crystal X-ray diffraction. Compound 1 exhibits a rare low-connected layered structure with sql topology, and further stacking of layers leads to a 3D supramolecular framework. The thermogravimetric behavior and chiral nature of 1 have been also investigated. The solid-state circular dichroism(CD) measurements with the Cotton effects at λmax = 280 nm apparently show that the bulk sample of 1 is homochiral.Presented here is a novel two-dimensional (2D) La(III) coordination polymer constructed from paddle-wheel subunits, which exhibits a rare layered structure with sql topology and homochiral environment.Highlights► A novel two-dimensional (2D) La(III) coordination polymer constructed from paddle-wheel subunits ► A rare layered structure with 4-connected sql topology ► The bulk sample of 1 possessing homochiral environment

A novel two-dimensional (2D) Mn(II) coordination polymer [Mn1.5(H2bdc)1.5(DMA)2] (1; H2bdc = terephthalic acid; DMA = N,N′-dimethylacetamide) based on trinuclear manganese subunit has been solvothermally prepared and structurally characterized by single-crystal X-ray diffraction. Compound 1 exhibits a rare layered structure with 6-connected hxl topology constructed from the trinuclear Mn3(COO)6 units, and further stacking of layers leads to a 3D supramolecular framework. The thermalgravimetric behavior and magnetic property of 1 have been also investigated. The magnetic susceptibility measurements reveal that the compound exhibits antiferromagnetic coupling interactions.Presented here is a novel two-dimensional (2D) Mn(II) coordination polymer constructed from trinuclear manganese subunits, which exhibits a rare layered structure with hxl topology and antiferromagnetic property.Highlights► A novel two-dimensional (2D) Mn(II) coordination polymer constructed from trinuclear manganese subunits. ► A rare layered structure with 6-connected hxl topology. ► Antiferromagnetic coupling interactions between Mn centers in the trinuclear Mn unit.