一维链状氰基桥联配位聚合物{[Ni(en)_2][Ni(CN)_4]}_n的合成与晶体结构

Synthesis and crystal structure of an one-dimensional cyanobridged complex ｛[Ni(en)_2][Ni(CN)_4]｝_n

将[Ni(en)2](ClO4)2的水溶液和K2[Ni(CN)4]的水溶液在H管中通过缓慢扩散反应,得到了一氰基桥联配位聚合物{[Ni(en)2][Ni(CN)4]}n,该配合物属单斜晶系,空间群P2(1)/C,晶胞参数为a=0.707 14(10)nm,b=1.062 90(15)nm,c=0.947 24(14)nm,α=γ=90°,β=108.168(3),°V=0.676 47(17)nm3,Z=4.该配合物通过Ni2-CN-Ni1(en)2-NC链连接形成无限延伸的一维波形链状结构,金属中心Ni1和Ni2分别具有正方形和畸变八面体构型.

A cyano-bridged coordination polymer {[Ni（en）2][Ni（CN）4]}n is obtained by slow diffusion of an aqueous solution of K2 [ Ni （CN） 4] and an aqueous solution of [ Ni （en） 2 ] （ ClO4 ） 2 in a H- shaped tube. The complex crystallizes in the monoclinic space group P2（1）/C with α - 0. 70714（10） nm, b = 1. 06290（15） nm, c - 0.94724（14） nm,α - γ = 90°,β = 108.168（3）°,V = 0.67647（17）nm^3,Z - 4. The complex consists of one-dimensional wave-shaped structure using Ni2-CN-Nil （en）2-NC chain. The two kinds of nickel atoms, Nil and Ni2 , take square and slightly distorted octahedral geometries, respectively.