Zhang Jian-Feng, Wan Bo, Liu Wen, Shi Qian
College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, People's Republic of China.
Acta Crystallogr Sect E Struct Rep Online. 2012 Aug 1;68(Pt 8):m1122-3. doi: 10.1107/S1600536812029583. Epub 2012 Jul 28.
In the centrosymmetric title compound, [CdNi(2)(C(17)H(16)N(2)O(2))(2)(HCOO)(2)(H(2)O)(2)]·2H(2)O, The Ni(II) cation is chelated by a 2,2'-[propane-1,3-diylbis(nitrilo-methanylyl-idene)]diphen-olate (salpn) anion, and further coordinated by a formate anion and a water mol-ecule in a distorted NiN(2)O(4) octa-hedral geometry. The Cd(II) cation, located on an inversion center, is coordinated by four deprotonated hy-droxy groups from two salpn anions and two carboxyl-ate O atoms from formate anions in a distorted octa-hedral geometry. Both formate and salpn anions bridge the Cd and Ni cations, forming a trinuclear complex. Within the salpn anion, the benzene rings are twisted to each other at a dihedral angle of 61.46 (18)°. Inter-molecular O-H⋯O hydrogen bonding is present in the crystal structure. The lattice water mol-ecule is disorder over two positions with an occupancy ratio of 0.75:0.25.
在中心对称的标题化合物[CdNi₂(C₁₇H₁₆N₂O₂)₂(HCOO)₂(H₂O)₂]·2H₂O中，Ni(II)阳离子由一个2,2'-[丙烷-1,3-二亚基双(亚氨基甲烷基亚基)]二酚盐(salpn)阴离子螯合，并在扭曲的NiN₂O₄八面体几何构型中进一步由一个甲酸根阴离子和一个水分子配位。位于对称中心的Cd(II)阳离子在扭曲的八面体几何构型中由来自两个salpn阴离子的四个去质子化羟基和来自甲酸根阴离子的两个羧酸根O原子配位。甲酸根和salpn阴离子均桥连Cd和Ni阳离子，形成一个三核配合物。在salpn阴离子内，苯环以61.46 (18)°的二面角相互扭曲。晶体结构中存在分子间O—H⋯O氢键。晶格水分子在两个位置上无序，占有率为0.75:0.25。
