Equilibrium Formation of Stable All-Silicon Versions of 1,3-Cyclobutanediyl
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Date
2020
Journal Title
Journal ISSN
Volume Title
Publisher
Wiley-VCH Verlag
Access Rights
info:eu-repo/semantics/openAccess
Abstract
Main group analogues of cyclobutane-1,3-diyls are fascinating due to their unique reactivity and electronic properties. So far only heteronuclear examples have been isolated. Here we report the isolation and characterization of all-silicon 1,3-cyclobutanediyls as stable closed-shell singlet species from the reversible reactions of cyclotrisilene c-Si3Tip4 (Tip=2,4,6-triisopropylphenyl) with the N-heterocyclic silylenes c-[(CR2CH2)(NtBu)2]Si: (R=H or methyl) with saturated backbones. At elevated temperatures, tetrasilacyclobutenes are obtained from these equilibrium mixtures. The corresponding reaction with the unsaturated N-heterocyclic silylene c-(CH)2(NtBu)2Si: proceeds directly to the corresponding tetrasilacyclobutene without detection of the assumed 1,3-cyclobutanediyl intermediate.
Description
Yıldız, Cem Burak ( Aksaray, Yazar )
Keywords
Diradicaloids, Low-valent Species, Silicon, Small Ring, Synthesis
Journal or Series
Angewandte Chemie - International Edition
WoS Q Value
Q1
Scopus Q Value
Q1
Volume
59
Issue
35
