Hypervalent octahedral SiH 6 2- species from high-pressure synthesis

Kati Puhakainen, Daryn Benson, Johanna Nylén, Sumit Konar, Emil Stoyanov, Kurt Leinenweber, Ulrich Häussermann*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

High-pressure conditions afford unique all-hydrido hypervalent complexes [SiH 6] 2- in the crystalline hydridosilicates A 2SiH 6 (A=K, Rb). Compared to normal-valent silanes the Si-H bond appears considerably enlarged, by about 0.15 Å. Accordingly, Si-H stretching frequencies are drastically reduced, by about 400-500 cm -1, thus reflecting the weakness of a hypervalent Si-H bond.

Original languageEnglish
Pages (from-to)3156-3160
Number of pages5
JournalAngewandte Chemie - International Edition
Volume51
Issue number13
DOIs
Publication statusPublished - 26 Mar 2012

Keywords

  • coordination chemistry
  • high-pressure hydrogenation
  • hydrido complexes
  • hypervalent silicon
  • multi-anvil technique

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