A general method of promoting agostic interactions (Ru↠–Ha–C) using azine phosphines

Abstract
Treatment of [RuCl2(PPh3)3] with azine phosphines gives complexes showing strong agostic interactions between ruthenium and C–H bonds of tert-butyl, methyl, aryl or alkenyl groups in dynamic systems; for example, all nine hydrogens of a tert-butyl group are agostically interacting with ruthenium on the NMR timescale at 20 °C.

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