首页> 中文期刊> 《南京晓庄学院学报》 >Cu(mnt)2-2-基离子对化合物合成与晶体结构

Cu(mnt)2-2-基离子对化合物合成与晶体结构

         

摘要

An ion-pair compound, [ 4-BrBz-1-APy ] 2 [ Cu (mnt) 2 ] ( 1 ) (4 - BrBz - 1 - APy = 4 - Br - ( benzylideneamino) pyridinium, rant2- = maleonitriledithiolate), has been synthesized and characterized. The X-ray single crystal studies show that 1 is crystallized in the monoclinic space group P21, and its asymmetric unit is composed of one anion together with two cations. The CuS4 core in the [ Cu (mnt) 2 ] 2- anion exhibits a perfect planar geometry. Two crystallographically inequivalent cations show a planar geometry. The anions (A) and cations (C) alternate to stack into a mixed column in the fashion of …ACCACC… along the b-axis. Another striking structural feature of 1 is the existences of bifurcated hydrogen bonding interactions between the cations and the CN groups in the moiety of anions.%采用溶液法合成了一个新颖的离子对化合物[4-BrBz-1-APy]2[Cu(mnt)2](1)(4-BrBz-1-APy=4-Br-(benzylideneamino)pyridinium,mnt2-=马来二氰基二硫烯),单晶衍射结果表明化合物1属于单斜晶系,空间群为P2,/n,晶体不对称单元含1个[Cu(mnt)2]2-阴离子以及2个[4-BrBz-1-APy]]’阳离子.在[Cu(mnt)2]2-阴离子中,Cu离子呈现平面正方形配位几何构型,两个晶体学不等价的4-BrBz-1·Apy+阳离子呈近似平面结构.沿晶体b-轴方向,[Cu(rant)2]2-阴离子(A)与4-BrBz-1-Apy+阳离子(C)以ACCACC的方式交替排列形成混合堆积柱.在化舍物1晶体中,阳离子苯环与阴离子mnt2-配体-CN之间形成了三中心型的非典型氢键.

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