不对称草酰胺桥联异三核配合物{[Ni(oxbe)]_2Cu(H_2O)_2}·2.5DMF的合成和晶体结构  

Synthesis and Crystal Structure of Dissymmetrical Oxamido-bridged Heterotrinuclear Complex:{[Ni(oxbe)]_2Cu(H_2O)_2}·2.5DMF

作　　者：陶偌偈[1] 梅崇珍[1] 臧双全[1] 牛景杨[1] 

机构地区：[1]河南大学化学化工学院,开封475001

出　　处：《Chinese Journal of Structural Chemistry》2004年第8期936-939,共4页结构化学（英文）

基　　金：河南省科技厅基金(No.0311020800);河南省教委(No.2002150003)资助课题。

摘　　要：合成了不对称草酰胺桥联异三核配合物{[Ni(oxbe)]2Cu(H2O)2}2.5DMF [H3oxbe为N-(2-羧基苯)-N-(2-氨乙基)草酰胺]。用单晶X-射线衍射法测定了其晶体结构。该晶体属单斜晶系,空间群C2/c,晶胞参数a = 22.590(7),b = 17.341(4),c = 10.900(3) ,β= 115.80(2),V = 3844.1(18) 3, Ni2CuC29.5H41.5N8.50O12.5, Mr = 896.17, Z = 4,Dc = 1.5481g/cm3,μ(MoKα) = 1.588 mm-1,F(000) = 1852,R = 0.0534,wR = 0.1334(I>2(I)), 2051个可观察衍射点。此三核配合物的结构单元具有中心对称性, 铜离子位于中心由6个氧原子构成的八面体中,2个镍离子则分别位于两端处在由N3O构成的近似平面正方场中,中心Cu2+与两端的Ni2+通过草酰胺阴离子桥联在一起。The dissymmetrical oxamido-bridged heterotrinuclear complex {[Ni(oxbe)]2Cu(H2O)2}2.5DMF (H3oxbe = N-benzoato-N-(2-aminoethyl)oxamido) has been synthesized, and its crystal structure was determined by single-crystal X-ray diffraction method. This compound crystallizes in monoclinic, space group C21/c with a = 22.590(7), b = 17.341(4), c = 10.900(3) ? ?= 115.80(2), V = 3844.1(18) 3, Ni2CuC29.50H41.50N8.50O12.5, Mr = 896.17, Z = 4, Dc = 1.548 g/cm3, ?MoK? = 1.588 mm-1, F(000) = 1852, R = 0.0534 and wR = 0.1334 for 2051 observed reflections with I > 2s(I). The heterotrinuclear molecular structure is of centrosymmetry, with the central copper ion located at a symmetrical octahedron consisting of six oxygen atoms and two terminal nickel ions in an approximately square planar environment. The inner Cu(II) and outer Ni(II) ions are bridged by two oxamido anion groups.

关 键 词：不对称草酰胺桥联 异三核配合物 镍配合物 铜配合物 合成 晶体结构 

分 类 号：O641.4[理学—物理化学]