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

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

doi:10.1002/anie.201108713

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 journal › Article › peer-review

20 Scopus citations

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 language	English (US)
Pages (from-to)	3156-3160
Number of pages	5
Journal	Angewandte Chemie - International Edition
Volume	51
Issue number	13
DOIs	https://doi.org/10.1002/anie.201108713
State	Published - Mar 26 2012

Keywords

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

ASJC Scopus subject areas

Catalysis
General Chemistry

Access to Document

10.1002/anie.201108713

Cite this

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title = "Hypervalent octahedral SiH 6 2- species from high-pressure synthesis",

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 {\AA}. Accordingly, Si-H stretching frequencies are drastically reduced, by about 400-500 cm -1, thus reflecting the weakness of a hypervalent Si-H bond.",

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AU - Puhakainen, Kati

AU - Benson, Daryn

AU - Nylén, Johanna

AU - Konar, Sumit

AU - Stoyanov, Emil

AU - Leinenweber, Kurt

AU - Häussermann, Ulrich

PY - 2012/3/26

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N2 - 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.

AB - 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.

KW - coordination chemistry

KW - high-pressure hydrogenation

KW - hydrido complexes

KW - hypervalent silicon

KW - multi-anvil technique

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