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Roussin黑盐与重氮盐反应,可以得到络合物[Fe-2S_2(C_6H_4F)_2(NO)_4]。它是一种暗红色的晶体,属于三斜晶系,空间群P_~-,晶胞参数a=10.217 4),b=10.143(1),c=8.955(1),α=105.68(4)°,β=99.91(2)°,Υ=83.44(2)°,Z=2。应用X射线衍射方法测定晶体结构。由重原子法解出结构,并经全矩阵最小二乘法修正,R=0.029。单胞中的两个分子以对称心相连系。Fe原子为四面体配位,两个-SR基团上的S原子以桥键与两个Fe原子构成Fe_2S_2的菱形平面,四个-NO基则分别与两个Fe原子配位。
The complex of [Fe-2S_2 (C_6H_4F) _2 (NO) _4] can be obtained by reaction of Roussin black salt with diazonium salt. It is a dark red crystal belonging to triclinic system with space group P_ ~ -, unit cell parameters a = 10.217 4), b = 10.143 (1), c = 8.955 (1), α = 105.68 (4) °, β = 99.91 (2) °, Υ = 83.44 (2) °, Z = 2. The crystal structure was determined by X-ray diffraction. The structure was solved by heavy atom method and corrected by full matrix least square method, R = 0.029. Two molecules in a cell are connected by a symmetrical center. The Fe atoms are tetrahedrally coordinated. The S atoms of the two -SR groups are bridged with two Fe atoms to form a rhombohedral plane of Fe 2 S 2, and the four -NO groups coordinate with two Fe atoms, respectively.