Tetrakis [(trimethylsilyl) ethynyl] Group 14 metal derivatives: an examination of the electronic interaction between two Group 14 metals connected by an acetylene wire

…, MA Brook, AD Bain, CS Frampton…

Index: Dallaire; Brook; Bain; Frampton; Britten Canadian Journal of Chemistry, 1993 , vol. 71, # 10 p. 1676 - 1683

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Citation Number: 26

Abstract

The tetrakis (trimethylsilyl) ethynyl derivatives of Si, Ge, Sn, and Pb were prepared and examined spectroscopically. NMR and Mössbauer spectroscopy and X-ray crystal structure data clearly demonstrate an electronic interaction in the ground state between the distal SiMe3 groups and the central metal atom, leading to a strong shielding of the central metal atom; the respective nmr signals of the central metal are among the most shielded ...