Synthesis and structural studies on polymeric assemblies derived from antimony(III) halide complexes with bi- and tri-dentate and macrocyclic thio- and seleno-ether ligands
作者:Andrew J. Barton、Nicholas J. Hill、William Levason、Gillian Reid
DOI:10.1039/b100782n
日期:——
SbX3 (X = Cl, Br or in some cases I) reacts with one molar equivalent of L [L = MeS(CH2)2SMe, MeS(CH2)3SMe, MeSe(CH2)2SeMe, MeC(CH2SMe)3, MeC(CH2SeMe)3, [12]aneS4 (1,4,7,10-tetrathiacyclododecane), [14]aneS4 (1,4,8,11-tetrathiacyclotetradecane), [16]aneS4 (1,5,9,13-tetrathiacyclohexadecane), [8]aneSe2 (1,5-diselenacyclooctane) or [16]aneSe4 (1,5,9,13-tetraselenacyclohexadecane)] in anhydrous CH2Cl2, MeCN or thf solution to afford colourless to red-orange powdered solids involving a 1 ∶ 1 Sb ∶ L ratio in most cases, and occasionally a 2 ∶ 1 Sb ∶ L ratio. The crystal structures of [SbCl3MeS(CH2)2SMe}], [(SbBr3)2([14]aneS4)],
[SbCl3MeC(CH2SMe)3}], [SbI3MeC(CH2SMe)3}] and [SbBr3MeC(CH2SeMe)3}] all exhibit infinite one- or three-dimensional networks which are assembled from distorted five or six coordinate Sb(III) with primary Sb–X bonding, secondary Sb–S or Sb–Se interactions and retention of the pyramidal SbX3 unit found in the parent halides. The structures of these compounds are discussed in terms of the bonding model used by others for antimony phosphine complexes. They are also compared with the structures of other reported thioether complexes of Sb(III), and with their Bi(III) analogues.
SbX3(X = Cl,Br,或在某些情况下I)与一摩尔当量的L [L = MeS(CH2)2SMe,MeS(CH2)3SMe,MeSe(CH2)2SeMe,MeC(CH2SMe)3,MeC(CH2SeMe)3,[12]aneS4(1,4,7,10-四硫杂环十二烷),[14]aneS4(1,4,8,11-四硫杂环十四烷),[16]aneS4(1,5,9,13-四硫杂环十六烷),[8]aneSe2(1,5-二硒杂环八烷)或[16]aneSe4(1,5,9,13-四硒杂环十六烷)]在无水CH2Cl2、MeCN或THF溶液中反应,生成大多数情况下Sb与L比例为1:1的无色至橙红色粉末固体,偶尔也有2:1的Sb与L比例。[SbCl3MeS(CH2)2SMe}]、[(SbBr3)2([14]aneS4)]、[SbCl3MeC(CH2SMe)3}]、[SbI3MeC(CH2SMe)3}]和[SbBr3MeC(CH2SeMe)3}]的晶体结构均显示由扭曲的五或六配位Sb(III)组成的无限一维或三维网络,这些网络由主要的Sb-X键合、次要的Sb-S或Sb-Se相互作用以及保留在母卤化物中的锥形SbX3单元组成。这些化合物的结构是根据其他人用于锑膦配合物的键合模型进行讨论的。它们还与报道的其他Sb(III)硫醚配合物及其Bi(III)类似物的结构进行了比较。