Synthesis, structure, and facile ring flipping of a bicyclo[1.1.0] tetrasilane

Kiyomi Ueba-Ohshima; Takeaki Iwamoto; Mitsuo Kira

doi:10.1021/om7011375

Synthesis, structure, and facile ring flipping of a bicyclo[1.1.0] tetrasilane

Kiyomi Ueba-Ohshima, Takeaki Iwamoto, Mitsuo Kira

SCI - Chemistry

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

Hexakis(tert-butyldimethylsilyl)bicyclo[1.1.0]tetrasilane (3), which is known to isomerize to the corresponding cyclotetrasilene 4 above 0°C, was synthesized via an alternative synthetic route and isolated at low temperatures as air-sensitive yellow crystals. The short-bond structure of 3 was disclosed by X-ray analysis and DFT calculations, and facile ring flipping of 3 below O °C with the activation parameters of ΔH^‡ = 6.67 ± 0.18 kcal mol^-1 and ΔS^‡ = -22.7 ± 0.8 cal mol^-1 K^-1 was observed.

Original language	English
Pages (from-to)	320-323
Number of pages	4
Journal	Organometallics
Volume	27
Issue number	3
DOIs	https://doi.org/10.1021/om7011375
Publication status	Published - 2008 Feb 11

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry

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abstract = "Hexakis(tert-butyldimethylsilyl)bicyclo[1.1.0]tetrasilane (3), which is known to isomerize to the corresponding cyclotetrasilene 4 above 0°C, was synthesized via an alternative synthetic route and isolated at low temperatures as air-sensitive yellow crystals. The short-bond structure of 3 was disclosed by X-ray analysis and DFT calculations, and facile ring flipping of 3 below O °C with the activation parameters of ΔH‡ = 6.67 ± 0.18 kcal mol-1 and ΔS‡ = -22.7 ± 0.8 cal mol-1 K-1 was observed.",

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AU - Ueba-Ohshima, Kiyomi

AU - Iwamoto, Takeaki

AU - Kira, Mitsuo

PY - 2008/2/11

Y1 - 2008/2/11

N2 - Hexakis(tert-butyldimethylsilyl)bicyclo[1.1.0]tetrasilane (3), which is known to isomerize to the corresponding cyclotetrasilene 4 above 0°C, was synthesized via an alternative synthetic route and isolated at low temperatures as air-sensitive yellow crystals. The short-bond structure of 3 was disclosed by X-ray analysis and DFT calculations, and facile ring flipping of 3 below O °C with the activation parameters of ΔH‡ = 6.67 ± 0.18 kcal mol-1 and ΔS‡ = -22.7 ± 0.8 cal mol-1 K-1 was observed.

AB - Hexakis(tert-butyldimethylsilyl)bicyclo[1.1.0]tetrasilane (3), which is known to isomerize to the corresponding cyclotetrasilene 4 above 0°C, was synthesized via an alternative synthetic route and isolated at low temperatures as air-sensitive yellow crystals. The short-bond structure of 3 was disclosed by X-ray analysis and DFT calculations, and facile ring flipping of 3 below O °C with the activation parameters of ΔH‡ = 6.67 ± 0.18 kcal mol-1 and ΔS‡ = -22.7 ± 0.8 cal mol-1 K-1 was observed.

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Synthesis, structure, and facile ring flipping of a bicyclo[1.1.0] tetrasilane

Abstract

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