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A novel Cu(I)-cluster based coordination compound formulated as {(Cu2I2)2[Cu6(dmpymt)6]}n (Hdmpymt = 4,6-dimethylpyrimidine-2-thione) was synthesized under solvo-thermal condition and characterized by single-crystal X ray diffraction, elemental analysis, IR spectroscopy, thermal analysis, and powder X-ray diffraction. Compound 1 is an infinite 3D structure composed of Cu2I2 and Cu6S6 binary Cu(I) clusters with 66 topology, and displays high thermal stability and good solvent stability. Fluorescence experiments illustrate that compound 1 displays apparently red luminescence emission and selectively turn-off fluorescence response for CrO42− and Cr2O72− in water, showing potential luminescent probes for detecting Cr(VI) ions.

A novel pillared-layer coordination polymer containing -Pb-O-Pb-Cu-Cl- inorganic sheets, [PbCuCl(3.5-pydc)]n (1) (3.5-H2pydc = pyridine-3,5-dicarboxylic acid), was obtained through the hydrothermal method. In compound 1, two symmetry-related Pb centers are bridged into a Pb2O2 dimer by two symmetrically carboxyl oxygen atoms from 3,5-pydc2− anions, each Pb2O2 dimer links four equivalent units into a 2D puckered Pb-O-Pb layer. Two symmetry-related Cu ions are bridged into a Cu2Cl2 dimer by two chlorine ions. Thus the -Pb-O-Pb- layer and Cu2Cl2 dimers are joined into a novel 2D puckered -Pb-O-Pb-Cu-Cl- inorganic layer. The 2D -Pb-O-Pb-Cu-Cl- inorganic layers are further pillared to form a 3D network through 3,5-pydc2− anions. To the best of our knowledge, the pillared-layer framework based on -Pb-O-Pb-Cu-Cl- inorganic layers has never been reported previously. Compound 1 exhibits weak blue light emission with the maximum at 383 nm upon excitation at 260 nm.

A novel [Dy4(OH)4]-based porous coordination polymer with double-wall structure, [Dy(OH)(cppc)]n (1) (H2cppc = 5-(4-carboxyphenyl)pyridine-2-carboxylic acid), has been successfully obtained through solvo-thermal method and characterized by elemental analysis, IR spectrum, powder X-ray diffraction, single-crystal X-ray diffraction and thermal analysis. Structure analysis shows compound 1 is a three-dimensional porous coordination polymer with double-wall structure constructed by [Dy4(OH)4]8+ cubane-like units and (cppc)2− anions, in which one-dimensional square channels with the dimensions 11.78 × 11.78 A2 are observed. Topology analysis reveals compound 1 has an unprecedented (3, 12)-connected topology net with Schlafli symbol {420.628.818}{43}4. Thermal analysis indicates the framework of compound 1 kept thermally stable until 370 °C. Fluorescent experiment indicates that compound 1 show apparently blue light emission in the solid state. Variable-temperature magnetic susceptibility measurement indicates strong antiferromagnetic interactions in [Dy4(OH)4]8+ SBU for compound 1.

A novel coordination polymer, {[Cu(ip)(Him)2(H2O)] · 3H2O} (1), (ip = isophthalate, Him = imidazole) was prepared under hydrothermal conditions and its structure is determined by single-crystal X-ray diffraction. X-ray structural analysis reveals that 1D zigzag metal-organic framework was connected to form a 3D metal-organic framework by a novel infinite 1D water chain constructed by five- and six-membered rings through edge-sharing. These water chains behave as glue to stabilize the 3D network. Upon removal of the water molecules by heating, the 3D structure breaks down. Thermogravimetric analysis, infrared, X-ray powder diffraction studies, elemental analysis and magnetic analysis were performed to characterize this compound.