Title

Siloxide Podand Ligand as a Scaffold for Molybdenum-Catalyzed Alkyne Metathesis and Isolation of a Dynamic Metallatetrahedrane Intermediate

Document Type

Article

Publication Date

1-1-2019

Abstract

Copyright © 2019 American Chemical Society. Triphenylsiloxide is one of the most successful ancillary ligands for Mo(VI)-alkyne metathesis catalysts. It was proposed that flexible siloxide ligands allow Mo-O-Si bond angles to modulate the electrophilicity of MoC and thereby promote the catalysis. Introduction of a siloxide podand ligand allowed elucidation of the effect of ligand flexibility and Mo-O-Si angles on the electrophilicity of MoC. It also allowed for the isolation of a rare metallatetrahedrane of Mo(VI) which was found to be dynamic in solution.

Publication Source (Journal or Book title)

Organometallics

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