Synthesis, characterisation and crystal structures of new nickel complexes in S4 coordination spheres; an unprecedented rearrangement during ligand synthesis
作者:Johanna A. W. Verhagen、Dianne D. Ellis、Martin Lutz、Anthony L. Spek、Elisabeth Bouwman
DOI:10.1039/b110332f
日期:2002.3.26
Two new nickel(II) complexes were synthesized with an S4 coordination environment. These complexes were synthesized by in situ deprotection of thiouronium salts in the presence of nickel(II). The ligands used are 4-mercapto-3,3-methyl-1-phenyl-2-thiabutane (Hbsms) and α,α′-bis(4-mercapto-3,3-methyl-2-thiabutyl)-o-xylene (H2xbsms). The former is a didentate ligand containing one thioether and one thiolate
在S 4配位环境下合成了两种新的镍(II)配合物。这些配合物是在镍(II)存在下通过硫代尿鎓盐的原位脱保护合成的。使用的配体是4-巯基-3,3-甲基-1-苯基-2-硫代丁烷(Hbsms)和α,α'-双(4-巯基-3,3-甲基-2-硫代丁基)-邻二甲苯(H 2xbsms)。前者是含有一个硫醚和一个硫醇盐基团的二齿配体,而后者是二硫醚二硫醇盐四齿配体。已经研究了这些配体与镍配位后的差异。在这些配体的合成过程中,发生了前所未有的自发重排,该重排非常快速且对单个产物具有选择性。通过分析,光谱和电化学方法对配合物进行表征。根据单晶X射线结构,镍配合物的几何形状为正方形平面。在[镍(BSMS)2 ]的两种配体配位与所述硫醇盐的反式朝向彼此的位置; 在[Ni(xbsms)]中,硫醇盐处于强制的顺式位置。[Ni(bsms)2 ]在三斜空间群P中结晶,并且在晶胞中具有一个中心对称分子。[Ni(xbsms)]