Abstract
By tuning the reaction temperature, two Anderson- and two [γ-Mo8O26]4−-based compounds decorated by pendent organic ligands, [CuII
9(bpz)2(pz)2(H2O)24][H2(Cr(OH)5Mo6O19)4]·11H2O (1), [CuII(bpz)2(H2O)2(γ-H4Mo8O26)]·2H2O (2), [CuII
2(tea)2(H2O)6(HCr(OH)6Mo6O18)2]· 6H2O (3) and [AgI(bpz)(H2O)(γ-H4Mo8O26)0.5] (4) (bpz=4-butyl-1H-pyrazole, pz=1H-pyrazole, tea=2-[1,2,4]triazol-4-yl-ethylamine), have been hydrothermally synthesized and characterized by single-crystal X-ray diffraction analysis, IR spectra and elemental analyses. In compound 1, there are two kinds of tri-nuclear CuII clusters induced by bpz and pz ligands, respectively. Four Anderson-type anions are linked by these tri-nuclear clusters to form a “W”-type subunit. In compound 2, the [Cu(bpz)2(H2O)2]2+ subunits connect the γ-Mo8 anions to construct a chain. The remaining two non-coordinated N donors in [Cu(bpz)2(H2O)2]2+ further link two adjacent γ-Mo8 anions through Mo–N bonds. In compound 3, there exists a bi-nuclear CuII cluster [Cu2(tea)2(H2O)6]4+. The discrete bi-nuclear CuII clusters and the CrMo6 anions link each other through abundant hydrogen bonding interactions. In compound 4, the [Ag(bpz)(H2O)]+ subunits connect γ-Mo8 anions to build a zigzag chain. The chains are further fused by other [Ag(bpz)(H2O)]+ cations to form a grid-like layer. There still exist Mo–N bonds in 4. We also have investigated the electrochemical and photocatalytic properties of 1–4.
摘要
通过调节反应温度,合成了四种基于Anderson和γ-Mo8O26 4-的配合物,这些配合物装饰有侧链有机配体,分别为[CuII9(bpz)2(pz)2(H2O)24][H2(Cr(OH)5Mo6O19)4]·11H2O(1)、[CuII(bpz)2(H2O)2(γ-H4Mo8O26)]·2H2O(2)、[CuII2(tea)2(H2O)6(HCr(OH)6Mo6O18)2]·6H2O(3)和[AgI(bpz)(H2O)(γ-H4Mo8O26)0.5](4)(其中,bpz=4-丁基-1H-吡唑,pz=1H-吡唑,tea=2-[1,2,4]三唑-4-乙基胺)。这些配合物通过单晶X射线衍射分析、红外光谱和元素分析进行了表征。在化合物1中,由bpz和pz配体诱导出两种三核CuII簇。这些三核簇通过四个Anderson型阴离子连接在一起,形成一个“W”型亚单位。在化合物2中,[Cu(bpz)2(H2O)2]2+亚单位连接γ-Mo8阴离子以构建链。[Cu(bpz)2(H2O)2]2+中的其余两个未配位的N供体通过Mo-N键进一步连接相邻的γ-Mo8阴离子。在化合物3中,存在一个双核CuII簇[Cu2(tea)2(H2O)6]4+。离散的双核CuII簇和CrMo6阴离子通过丰富的氢键相互连接。在化合物4中,[Ag(bpz)(H2O)]+亚单位连接γ-Mo8阴离子以构建一个锯齿状链。这些链进一步被其他[Ag(bpz)(H2O)]+阳离子融合在一起,形成一个类似网格的层。化合物4中仍存在Mo-N键。我们还研究了化合物1-4的电化学和光催化性质。