Influence of the transannular interaction in spiro-heterocycles containing Ge(IV) and Sn(IV). A comparative study
作者:Verónica García-Montalvo、María Granados-Ortíz、Alfredo A. Guevara-García、Viviana Lomelí、Sandra González-Gallardo、Diego Ocampo-Gutiérrez de Velasco、Raymundo Cea-Olivares、Simón Hernández-Ortega、Rubén Alfredo Toscano
DOI:10.1016/j.poly.2011.01.006
日期:2011.4
Abstract [D(CH2CH2S)2]M(XCH2CH2Y) 1–8 (M = Ge, Sn; D = O, S; X = Y = S, O and X = S, Y = O) spirocycles were synthesized to analyze the influence of the metal center replacement and the donor atom hardness on the strength of the transannular bond and the hypercoordination phenomena. The compounds were characterized by IR, Raman and NMR (1H, 13C and 119Sn) spectroscopy, E.I. mass spectrometry and elemental
摘要合成了[D(CH2CH2S)2] M(XCH2CH2Y)1-8(M = Ge,Sn; D = O,S; X = Y = S,O和X = S,Y = O)螺环金属中心置换和施主原子硬度对跨环键强度和超配位现象的影响。通过IR,拉曼和NMR(1H,13C和119Sn)光谱,EI质谱和元素分析对化合物进行表征。通过X射线衍射分析获得了化合物3、4、6-8和Ge(SCH2CH2S)2(9)的分子和晶体结构。它们都因跨环金属配位(M⋯D)而显示出五个配位的中心原子,除4外,它们显示出由两个五元环融合形成环状二氧杂环戊烷单元[O(CH2CH2S) 2] Sn(SCH2CH2O)} 2。