Reactivity of acryloyl chloride towards the anion [Cp2(CO)4Mo2(µ-PPhH)]–; synthesis of an unusual phosphaalkene

Abstract

Deprotonation of the complex [Cp₂(CO)₄Mo₂(µ-PPhH)(µ-H)] by Bu^tLi at –78 °C and subsequent addition of acryloyl chloride affords the metallophosphaalkene complex [Cp₂(CO)₄Mo₂(η¹-η²-PhPCHMe)] in high yield; the complex exhibits cis/trans isomerism, both isomers having been crystallographically characterised.