A stable cation of a CSi3P five-membered ring with a weakly coordinating chloride anion

Angew Chem Int Ed Engl. 2011 Dec 23;50(52):12510-3. doi: 10.1002/anie.201104146. Epub 2011 Sep 29.

Abstract

Don't count on counterions: The cyclic five-membered CSi(3)P cation 1 is synthesized in the reaction of benzamidinato-stabilized chlorosilylene and methyl phosphaalkyne. The presence of four π electrons in 1 means it can be considered as a formal, heavier analogue of the cyclopentadienyl cation. Surprisingly the small counteranion (Cl(-)) does not contribute to the ring stability.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anions / chemistry
  • Cations / chemistry
  • Chlorides / chemistry*
  • Cyclobutanes / chemical synthesis
  • Cyclobutanes / chemistry*
  • Models, Molecular
  • Molecular Structure
  • Organophosphorus Compounds / chemical synthesis
  • Organophosphorus Compounds / chemistry*
  • Silanes / chemical synthesis
  • Silanes / chemistry*

Substances

  • Anions
  • Cations
  • Chlorides
  • Cyclobutanes
  • Organophosphorus Compounds
  • Silanes