X-ray crystallographic study of some pentacoordinated organogermanium compounds

Yoshito Takeuchi, László Párkányi, Alajos Kálmán, Miki Nishikawa, Katsumi Tanaka, Wasuke Mori, Masashi Kinoshita

Research output: Contribution to journalArticle

5 Citations (Scopus)


The X-ray crystallographic structures of 2-(2-phenyl-5-oxo-1,3, 2-oxathiagermolan-2-ylthio)acetic acid (2), its pyridinium salt (3), and the pyridinium salt of 2-(2-t-butyl-5-oxo-1,3,2-oxathiagermolan-2-ylthio) acetic acid (1), (4), together with 2-(2-phenyl-1,3,2-oxathiagermolan- 2-ylthio)ethanol (5) were determined and compared with that of 1. All of compounds investigated, 2-5, have the TBP-like, pentacoordinated structure. This fact seems to indicate that the driving force of pentacoordination of this type of compounds is the existence of an oxygen atom δ to the germanium atom that readily forms a five membered ring by hypercoordination.

Original languageEnglish
Pages (from-to)33-38
Number of pages6
JournalJournal of Organometallic Chemistry
Issue number1
Publication statusPublished - Dec 1 2003


  • Hypercoordination
  • Organogermanium compounds
  • X-ray crystallography

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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