ja8b04882_si_001.cif (605.44 kB)
Structure and Reactivity of Chromium(VI) Alkylidenes
dataset
posted on 2018-05-30, 00:00 authored by Pengcheng Wu, Glenn P. A. Yap, Klaus H. TheopoldBis(arylimido)Cr(VI)
dialkyls lacking β-hydrogen decompose
by α-hydrogen abstraction and, upon trapping with triphenylphosphine,
yield isolable alkylidene complexes. Two such complexes, namely (ArN)2CrCHR(PPh3) (R = tBu, SiMe3), have been structurally characterized. The coordinatively
unsaturated alkylidene intermediates are highly reactive; they effect
CH activation of saturated hydrocarbons and they react with
olefins to produce metallacyclobutanes.