The X-ray crystal structural characterization of dipotassium bisoxalato copper(II) tetrahydrate, [K2Cu(ox)2·4H2O] (ox=oxalate dianion)
作者： Jian Fan , Wei-Yin Sun , Taka-aki Okamura , Kai-Bei Yu , Norikazu Ueyama
DOI: 10.1016/S0020-1693(01)00466-2
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摘要: Abstract Dipotassium bisoxalato copper(II) tetrahydrate, [K2Cu(ox)2·4H2O] (1) (ox=C2O4 2−, oxalate dianion), was first characterized structurally by X-ray crystallography. The compound crystallizes in monoclinic, space group P21/n with a=3.7770(10), b=14.819(3), c=10.756(2) A, β=93.180(10)°, V=601.1(2) A3, Z=2, Dcalc=2.154 g cm−3, M=389.84, R=0.0301 based on 940 observed reflections I>2σ(I). results of structural analysis indicate that the complex formed CuO and KO coordination bonds has a two-dimensional network structure which further linked O &0xF700; H ⋯ hydrogen to give three-dimensional structure. Cu(II) atom square-planar geometry two bidentate ligands. Each K+ cation is coordinated eight oxygen atoms from one unidentate groups four water molecules.
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