Pentacoordinate silyl cations stabilized by coordination with oxygen donors: Crystal structure, charge distribution, and stereodynamics

Inna Kalikhman, Sonia Krivonos, Lutz Lameyer, Dietmar Stalke, Daniel Kost

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Attempted preparation of neutral hexacoordinate silicon chelates with two O→Si dative bonds (4), in analogy to previously reported bis-N→Si isomers (2), resulted in unexpected formation of pentacoordinate siliconium complexes (5 and 6), characterized by a crystal structure. The barrier for inversion of configuration at silicon was determined by selective inversion recovery NMR measurements: ΔG* = 20.5 ± 0.2 kcal mol-1.

Original languageEnglish
Pages (from-to)1053-1055
Number of pages3
JournalOrganometallics
Volume20
Issue number6
DOIs
StatePublished - 19 Mar 2001

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