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本文报导了双金属硫氰酸根络合物ZnAg_2(SCN)_4的晶体结构。晶体属单斜晶系,空间群为Cc,晶胞参数:a=19.720(6),b=7.712(2),c=7.813(1);β=96。50°(2)°。每个晶胞含4个ZnAg_2(SCN)_(40)在CAD-4四圆衍射仪上用MoKα射线收集了I≥2σ(I)的971个独立衍射数据。晶体结构采用重原子法解出,用三维付立叶合成及全矩阵最小二乘法修正,偏离因子R为0.062。 在这一个结构冲,硫氰酸根作为三配位“桥”基,以其N端和Zn络合,以其S端同时与两个Ag络合,通过共价配键将整个结构联成三维的无穷骨架。Zn和Ag原子的邻近原子呈畸变的四面体配位构型。
This paper reports the crystal structure of bimetallic thiocyanate complex ZnAg_2 (SCN) _4. The crystal is monoclinic with a space group of Cc with unit cell parameters of a = 19.720 (6), b = 7.712 (2), c = 7.813 (1); β = 96.50 ° (2) °. Each cell contains 4 ZnAg_2 (SCN) _ (40) 971 independent diffraction data of I≥2σ (I) were collected on a CAD-4 four-circle diffractometer with MoKα radiation. The crystal structure was solved by heavy atom method, which was corrected by three-dimensional Fourier synthesis and full-matrix least square method. The deviation factor R was 0.062. In this structure, thiocyanate acts as a three-coordinate “bridge” group, with its N-terminal and Zn complex, with its S-terminal at the same time with two Ag complex, the covalent bond with the entire structure into three-dimensional The infinite skeleton. Adjacent atoms of Zn and Ag atoms show distorted tetrahedral coordination configuration.