A Three-dimensional Porous Metal-organic Framework Based on Cyano Unit and 1,4-Bis(1,2,4-triazol-1-yl)butane(btb):{[Cu_8(btb)_2(CN)_8].3H_2O}_n

The title coordination polymer 1,{[Cu8（btb）2（CN）8].3H2O}n（btb = 1,4-bis（1,2,4-triazol-1-yl）butane）,has been hydrothermally synthesized and structurally characterized by single-crystal X-ray diffraction.Complex 1 crystallizes in monoclinic,space group C2/c with a = 1.2938（3）,b = 1.9422（5）,c = 0.9406（2） nm,β = 121.891（4）°,V = 2.0066（9） nm3,C24H30Cu8N20O3,Mr = 1155.00,Dc = 1.912 g/cm3,μ（MoKα） = 4.209 mm？1,F（000） = 1140,GOF = 1.184,Z = 2,the final R = 0.0634 and wR = 0.1503 for I 2σ（I）.In complex 1,one-dimensional CuCN zigzag chains are linked by triazolyl groups of btb ligands to form two-dimensional networks,which are further bridged by 1,4-butyl moieties of btb ligands to fabricate a three-dimensional order framework,in which one-dimensional ellipsoid-like channels are observed.

Syntheses, Structures, and Properties of Three Coordination Polymers: [Cd_2(bpp)_(1.5)(Hbpp)(phen)_2]_n, [Mn_3(Htptc)_2(phen)_2(H_2O)_2]_n, and {[Cu(btc)_(0.5)(1,4-bib)]·2H_2O}_n

Hydrothermal reactions of three aromatic polycarboxylic acids and the transitional metal cations in the presence of phen and 1,4-bib afford three new coordination polymers： [Cd2（bpp）1.5（Hbpp）（phen）2]n （1）, [Mn3（Htptc）2（phen）2（H2O）2]n （2）, and {[Cu（btc）0.5（1,4- bib）]·2H2O}n（3） （H2bpp = 2,6-bis（4＇-carboxyphenyl）-4-phenylpyridine, H4tptc = terphenyl-2,5,2＇,5＇-tetracar- boxylic acid, H4btc =biphenyl-2,2＇,4,4＇-tetracarboxylic acid, phen =1,10-phenanthroline, and 1,4-bib = 1,4-bis（1H-imidazol-1-yl）benzene）. Their structures have been determined by single- crystal X-ray diffraction analyses, elemental analyses, IR spectra, and powder X-ray diffraction （PXRD） analyses. In compound 1, the CdII cations are linked by bpp2- to form one ladder structure, based on which a 3D network is constructed with the help of non-covalent interactions. The topology of 2 is a 3D （3,4,5）-connected framework with the Point Schl？fli symbol of （42.6）2（43.62.8）（45.64.8）2. Compound 3 shows an unprecedented 3D （4,4）-connected framework with the Point Schl？fli symbol of （64.82）2（65.8）. Moreover, the luminescent property of 1 has been investigated.

Syntheses, Structures and Characteristics of Two New Cu(II) Coordination Polymers Based on 4-tert-butyl-phthalate and Different Bis(1,2,4-triazol-1-yl) Co-Ligands

Two new Cu（Ⅱ） coordination polymers, [Cu2（tbph）2（btb）2]n （1） and {[Cu2（tbph）2- （bth）2]·H2O}n （2）, （H2tbph = 4-tert-butyl-phthalic acid, btb = 1,4-bis（1,2,4-triazol-1- yl）butane, bth = 1,6-bis（1,2,4-triazol-l-yl）hexane）, have been synthesized and characterized by elemental analysis, FT-IR and X-ray single-crystal diffraction. Complex 1 has a 2D sql layer. Complex 2 shows a （3,4）-connected 2D sheet with a （4.6^4.8）（4.8^2） topology. The thermal behavior of the two cor- responding complexes has briefly been investigated.

Syntheses, Structures and Photocatalytic Degradation Properties of Two Copper(Ⅱ) Coordination Polymers with Flexible Bis(imidazole) Ligand

Two copper(Ⅱ) coordination polymers {[Cu(bib)(nip)]·1.5 H_(2)O}_(n)(1) and [Cu_(2)(bib)(glu)_(2)]_(n)(2)(bib = 1,4-bis(2-methyl-imidazol-1-yl)butane, H2nip = 5-nitroisophthalic acid, H2glu = glutaric acid) were synthesized by the hydrothermal method and characterized by single-crystal X-ray diffraction, elemental analyses, IR and solid-state diffuse-reflection spectra. 1 forms a 2D network with the point symbol of(4~4·6^(2)) and 2D → 2D polythreaded network. 2 constructs the 6-connected 3D network based on the [Cu_(2)(COO)_(2)] dimer with the point symbol of(4~4·6~(10)·8). The energy band gaps(Eg) of 1 and 2 were 2.453 and 2.162 eV, respectively. 1 and 2 present high photocatalytic activity for the degradation of methylene blue under visible light irradiation.