The nature of the interaction of nucleophiles such as HMPT, DMSO, DMF and Ph3PO with triorganohalo-silanes, -germanes, and -stannanes and organophosphorus compounds. Mechanism of nucleophile induced racemization and substitution at metal

  • Corriu R
  • Dabosi G
  • Martineau M
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Abstract

The systematic conductivity studies of various triorganohalides of the main Group IV elements in the presence of nucleophiles known as racemization agents (HMPT, DMSO, DMF and Ph3PO) do not show the existence of ionic 1/1 adducts. Those observed with R3SiBr and HMPT are a particular case due to ability of the Si-Br bond. The bromogermane and chlorostannane show very different behaviour. Molecular 1/1 and 1/2 adducts formed by interaction of nucleophilic reagents and Ph3SnCl were obterved in polarographic studies. These observations confirm the existence of pentacoordinate or hexacoordinate species. © 1980.

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Authors

  • R. J P Corriu

  • G. Dabosi

  • M. Martineau

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