The mixed ligand dithiocarbamate complex was synthesized by the reaction between the ammonium salt of the dithiocarbamate ligands with mercury salt. There are two mercury complexes in the asymmetric unit with a compositional disorder between an ethyl group and a methyl group. A distorted tetrahedral geometry is found for each mercury atom defined by four sulphur atoms derived from two asymmetrically chelating dithiocarbamate ligands. IR spectra show thioureide υ(C–N) bands at 1491 cm−1 which is higher than observed in the simple complexes of the same ligands. The effect of alkyl substituents were observed in the magnetic unequivalence of the thioureide and phenyl units in the NMR spectroscopy. The molecules are related to each other by virtue of the compositional disorder which exists at three positions in the alkyl group across the unit. The compound crystallizes in the triclinic space group P-1 with a = 10.4764(10) Å, b = 11.0433(10) Å, c = 18.5566(17) Å, α = 97.8980(10)°, β = 95.3340(10)°, γ = 110.3010(10)°, and Z = 2. In the molecular structure, there are two tetrahedrally coordinated mercury complexes in the asymmetric unit with compositional disorder at the positions of C17, C26, and C35 between an ethyl group and a methyl group. The molecules are related to each other by virtue of the compositional disorder.
二
硫代
氨基甲酸酯
配体的
铵盐与
汞盐反应,合成了混合
配体二
硫代
氨基甲酸酯络合物。在不对称单元中有两个
汞络合物,其中一个乙基和一个甲基之间存在成分紊乱。两个不对称螯合二
硫代
氨基甲酸酯
配体中的四个
硫原子确定了每个
汞原子的扭曲四面体几何形状。红外光谱显示,
硫脲υ(C-N)带位于 1491 cm-1 处,高于在相同
配体的简单络合物中观察到的位置。在核磁共振光谱中,
硫脲和苯基单元的磁性不等同,这表明烷基取代基产生了影响。由于整个单元中烷基的三个位置存在成分紊乱,因此分子之间相互关联。该化合物在三菱空间群 P-1 中结晶,a = 10.4764(10) 埃,b = 11.0433(10) Å, c = 18.5566(17) Å, α = 97.8980(10)°, β = 95.3340(10)°, γ = 110.在分子结构中,不对称单元中有两个四面体配位的
汞配合物,在 C17、C26 和 C35 位置的一个乙基和一个甲基之间存在成分紊乱。这些分子之间的关系是由组成混乱造成的。