稀土季铵盐配合物的研究(VI)——四硝酸二硫氰酸合钕酸四丁基铵的合成、表征和晶体结构

Studies on Rare Earth Complexes of Quaternary Ammonium Salt(Ⅵ)——Synthesis,Characterization and Crystal Structure of Tetrabutylammonium Tetranitrato Diisothiocyanato Neodymate

合成了一种新型混合配体标题配合物,研究了该配合物的中红外光谱和热谱;测定了在乙醇溶液中的摩尔电导,证明其屑3:1型电解质。用四圆衍射仪测定了晶体结构,属单斜晶系,Cc空间群,晶胞参数:a=1.6578nm,b=1.8108nm,c=2.3962nm;β=91.58°,Z=4,中心离子钕被来自4个硝酸根的8个氧原子和硫氰酸根的2个氮原子所配位,配位数为10同。Nd—O平均键长为0.2567nm;Nd—N平均键长为0.2534nm。配位多面体为扭曲的双帽四方反棱柱体。

A new type mixed ligand title complex was synthesized. The general formula was C50H108NdN9O12S2. The infrared spectrum and thermal analysis of the complex were studied. Its molar conductivity shows it to be 3 : 1 type electrolyte and the ionic crystal. The single crystal structure has been determined by a four-circle X-ray diffractometer. The crystal is monoclinic, space group Cc, with unit cell dimensions: a=1. 6578 nm, b=1. 8108 nm, c=2.3962nm, β=91.58°, Z = 4. Neodymium is coordinated by 8 oxygen atoms of four biden-tate, nitrate groups, and 2 nitrogen atoms of two thiocyanates, so the coordination number is 10. The average bond length of Nd-O is 0. 2567 nm; the average bond length of Nd-N is 0. 2534 nm. Polyhedron of Nd3+ ion is a twist 4,4-bicapped square antiprism.