Intercepting the Disilene-Silylsilylene Equilibrium

Martin W. Stanford, Julia I. Schweizer, Maximilian Menche, Gary S. Nichol, Max C. Holthausen, Michael J Cowley

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

The equilibrium between disilenes (R2Si=SiR2) and their silylsilylene (R3Si-SiR) isomers has previously been inferred but not directly observed, except in the case of the parent system H2Si=SiH2. Here, we report a new method to prepare base-coordinated disilenes with hydride substituents. By varying the bulk of the coordinating base and other silicon substituents, we have been able to control the rearrangement of disilene adducts to their silylsilylene tautomers. Remarkably, 1,2 migration of a trimethylsilyl group is preferred over hydrogen migration. A DFT study of the reaction mechanism provides a rationale for the observed reactivity and detailed information on the bonding situation in base-stabilized disilenes.
Original languageEnglish
Pages (from-to)1329-1333
Number of pages5
JournalAngewandte Chemie International Edition
Issue number5
Early online date21 Nov 2018
Publication statusPublished - 28 Jan 2019


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