Assembly of six [HxAs2Mo6O26]((6-x)-) cluster-based hybrid materials from 1D chains to 3D framework with multiple Cu-N complexes

作者：Cong, Bo-Wen; Su, Zhan-Hua^*; Zhao, Zhi-Feng; Yu, Bao-Yi; Zhao, Wen-Qi; Xia, Lin; Ma, Xiu-Juan; Zhou, Bai-Bin^*

来源：CrystEngComm, 2017, 19(20): 2739-2749.

DOI：10.1039/c7ce00319f

• STATE COORDINATION CHEMISTRY
• METAL-ORGANIC FRAMEWORKS
• ELECTROCATALYTIC PROPERTIES
• ELECTROCHEMICAL-BEHAVIOR
• KEGGIN POLYOXOMETALATE
• CATALYTIC-PROPERTIES
• CRYSTAL-STRUCTURE
• BUILDING-BLOCKS
• NITRIC-OXIDE
• POLYMERS

A series of organic-inorganic hybrid compounds, [{Cu(4,4 '-bipy)(1.5)(H2O)(2))(2){H2As2Mo6O26}] (1), [{Cu (biim)(2)}(2){HAs2Mo6O26}{Cu(biim)Cl}]center dot H2O (2), (H(2)bib)[{Cu(H2O)(2)(bib)}{H2As2Mo6O26}]center dot 2H(2)O (3), [{(Hbix)Cu(bix)(0.5)}(2){As2Mo6O26}]center dot 2H(2)O (4), [{Cu(bmb)(1.5)(H2O)}(2){H2As2Mo6O26}]center dot 2H(2)O (5), 0 and [{Cu-2(bth)(4)}{H2As2Mo6O26}]center dot H2O (6) (4,4 '-bipy = 4,4 '-bipyridine; biim = biimidazole; bib = 1,4-bis(1-imidazolyl) benzene; bix = 1,4bis.imidazol-1-ylmethyl)benzene; bmb = 1,4-bis(benzimidazol-1-yl) benzene; bth = 1,6-bis(1,2,4-triazollyl)hexane), were hydro-thermally synthesized and structurally characterized via elemental analysis, TG, IR, XPS, XRD, and single-crystal X-ray diffraction. The crystal structures 1-6 are formed by metal-organic complexes and the [HxAs2Mo6O26]((6-x)-) cluster. Compounds 1-2 feature infinite 1D-chain structures. Compounds 3-5 form 2D-layer structures in which Cu cations are five-, six-coordinated with polyoxoanions and organic ligands. Notably, compound 6 introduces the POM system into a metal-organic framework (MOF) to form a unique POMOF {4(2).6(11).8(2)}{4(2).6(4)}{4(4).6(9).7.8} topological structure. The coordination modes of the [ HxAs2Mo6O26]((6- x)-) cluster in compounds 2, 5 and 6 are reported for the first time. The photocatalytic properties of 1-6 are studied for the decomposition of methylene blue (MB) under UV light. In addition, all the compounds exhibit good electrocatalytic performances for the reduction of nitrite.

• 出版日期2017-5-28
• 单位哈尔滨师范大学; 北京农学院; 黑龙江大学