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

Kiyomi Ueba-Ohshima, Takeaki Iwamoto, Mitsuo Kira

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


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 languageEnglish
Pages (from-to)320-323
Number of pages4
Issue number3
Publication statusPublished - 2008 Feb 11


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