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

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

Research output: Contribution to journalArticle

11 Scopus citations


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 (US)
Pages (from-to)3156-3160
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number13
StatePublished - Mar 26 2012


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

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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    Puhakainen, K., Benson, D., Nylén, J., Konar, S., Stoyanov, E., Leinenweber, K., & Häussermann, U. (2012). Hypervalent octahedral SiH 6 2- species from high-pressure synthesis. Angewandte Chemie - International Edition, 51(13), 3156-3160. https://doi.org/10.1002/anie.201108713