Hypervalent silicon via intramolecular co-ordination in a four-membered ring system: synthesis and structure of SiCl2X[2-C(SiMe3)2C5H4N](X = H or Me); X-ray structures of the former complex and of SiCl2Me(2-CPh2C5H4N)
作者:Tania van den Ancker、Brian S. Jolly、Michael F. Lappert、Colin L. Raston、Brian W. Skelton、Allan H. White
DOI:10.1039/c39900001006
日期:——
Reaction of SiCl3X (X = H or Me) with LiR [R = 2-C(SiMe3)2C5H4N] yields the novel hpervalent five-co-ordinate compounds SiRCl2X which show strong Intramolecular Si–N interactions in the four-membered chelate ring [Si–N 2.066(9)Å for X = H (X-ray)] which persists in solution; the related compounds, SiR′Cl2X (X = H or Me for R′= 2-CPh2C5H4N) have four-co-ordinate silicon (deduced from the 29Si NMR spectra
SiCl 3 X(X = H或Me)与LiR [R = 2-C(SiMe 3)2 C 5 H 4 N]的反应产生了新颖的五价五配位化合物SiRCl 2 X,其显示出较强的分子内Si–在四元螯合环中存在N相互作用[对于X = H(X射线)为Si–N 2.066(9)Å ],该相互作用持续存在于溶液中;相关化合物SiR'Cl 2 X(对于R'= 2-CPh 2 C 5 H 4 N,X = H或Me )具有四坐标硅(根据29 Si NMR光谱推导,对于X = Me ,即X射线结构)。