Reactions of oxo- and peroxo-molybdenum complexes with B(C6F5)3: crystal structures of cis-[MoO{OB(C6F5)3}(η2-ONEt2)2] and cis-[MoO{OB(C6F5)3}{η2-PhN(O)C(O)Ph}2]

Abstract

The oxometal complexes [MoO2(η2-O-NR2)2], R = Et or CH2Ph, reacted with the strong Lewis acid B(C6F5)3 at their oxo functionality to give cis-[MoO{OB(C6F5)3}(η2-ONR2)2], (R = Et 1 or CH2Ph 2). Reaction of the peroxo complex [MoO(O2){η2-PhN(O)C(O)Ph}2] with the same Lewis acid led initially to the formation of [MoO(O2){B(C6F5)3}{η2-PhN(O)C(O)Ph}2] 3, which decomposes to form [MoO{OB(C6F5)3}{η2-PhN(O)C(O)Ph}2] 4. Compounds 1 and 4 have been characterised by X-ray crystallography.