Preparation, properties, and crystal and molecular structures of the cyanomethane adducts of niobium(<scp>IV</scp>) chloride and di-µ-sulphido-bis[dichloroniobium(<scp>IV</scp>)]
作者:A. John Benton、Michael G. B. Drew、Richard J. Hobson、David A. Rice
DOI:10.1039/dt9810001304
日期:——
The cyanomethane adduct of NbCl4 analyses for NbCl4·3CH3CN (1). A crystal-structure determination of this species shows that it contains cis octahedral [NbCl4(NCMe)2] and a solvent CH3CN molecule. The unique bond lengths are Nb–N 2.220(13)Å and Nb–Cl 2.328(2), 2.343(6), and 2.349(4)Å. The crystals of (1) are orthorhombic with unit-cell dimensions a= 10.437(11), b= 13.883(12), c= 9.828(9)Å, Z= 4, and
NbCl 4的氰基甲烷加合物分析了NbCl 4 ·3CH 3 CN(1)。对这种物质的晶体结构测定表明,它含有顺式八面体[ NbCl 4(NCMe)2 ]和溶剂CH 3 CN分子。独特的键长为Nb–N 2.220(13)Å和Nb–Cl 2.328(2),2.343(6)和2.349(4)Å。(1)的晶体是正交晶体,其晶胞尺寸为a = 10.437(11),b = 13.883(12),c = 9.828(9)Å,Z = 4和空间群Pnma。在衍射仪上已收集了背景以上的总共729个反射并将其精炼为R 0.051。