Novel 18-crown-6 organometallic rubidium and cesium complexes containing cyclopentadienyl, indenyl, pentamethylcyclopentadienyl, and fluorenyl as carbanions
作者:Swen Neander、Ulrich Behrens、Falk Olbrich
DOI:10.1016/s0022-328x(00)00202-3
日期:2000.6
compounds with the hexadentate Lewis base 18-crown-6 yielded new complexes of the type [MR(18-crown-6)] and [RbFl(18-crown-6)}2(L)] (M=Rb, Cs; R=Cp, Ind, Cp*, Fl; L=dimethoxyethane, dioxane). All complexes were characterized by NMR spectroscopy and X-ray structure analysis. The dominating structure element in the investigated complexes is an [MR(18-crown-6)] unit in which the alkali metal ion is in
描述了无碱的环戊二烯基-,茚基-,五甲基环戊二烯基-和芴基rub和-铯的合成。这些化合物与六齿路易斯碱18-crown-6的反应产生了[MR(18-crown-6)]和[RbFl(18-crown-6)} 2(L)类型的新配合物(M = Rb,Cs; R = Cp,Ind,Cp *,F1; L =二甲氧基乙烷,二恶烷。通过NMR光谱和X射线结构分析表征所有复合物。所研究的配合物中的主要结构元素是[MR(18-crown-6)]单元,其中碱金属离子与冠醚的六个氧原子紧密接触。此外,还发现了阳离子与碳负离子之间的多向π相互作用。对于所有含有芴基配体的分离的复合物,[MF1(18-crown-6)]和[RbF1(18-crown-6)} 2(L)],只有η 2的C之间的芳族C-C键的协调5 -和C 6观察型圈于金属离子。