(1,2-(1H-1,2,4-三唑))乙烷的一维双链CU(Ⅱ)合物合成与表征

摘要

Using the highly flexible bis-triazole ligand 1,2-bis(1,2,4-triazole-1-yl)ethane (L), one new complex ｛ [Cu(cis-L)2Br]Br·2H_2O]n｝(1) has been synthesized and characterized by elemental analysis, FTIR and single crystal X-ray diffraction analysis. It belongs to triclinic system with space group Pl, a=0.757 0(2) nn, b=0.877 2(3) nn, c=1.6415(5) nn, α=104.187(5)°, β=90.905(5)°, γ=98.589(5)°, V=1.0434(5) nm~3, Z=2. In 1 two cis-L molecules bridge central copper(II) ions forming 1 D double-chain structure, four-member Br ... 0 supra-molecular cycles can also be observed. The varied temperature magnetic property of 1 has been investigated from 300 to 2 K indicating weak antiferromagnetic interactions between neighboring copper(II) ions.%利用高度柔性的双三唑配体((1,2-(1H-1,2,4-三唑))乙烷(L)和铜盐反应合成了1个新的具有一维双链结构的铜(Ⅱ)配合物{[Cu(cis-L)_2Br]Br·2H_2O}n(1).单晶结构表明:配合物1的晶体属于三斜晶系,Pi空间群.在配合物1中双三唑配体采用反式构型,桥联相邻的中心铜离子形成一维双链结构,晶格中游离的Br原子同配位水分子形成了四元环状的Br...O超分子环.测定了配合物1在2～300 K的变温磁化率,结果表明相邻铜离子间存在弱的反铁磁相互作用.