Hydrocarbon species μ3-CCH2−, μ3-CCH3 and μ-CHCH3 supported on Ti3O3

Abstract

Treatment of the μ₃-ethylidyne complex [{TiCp*(μ-O)}₃(μ₃-CMe)] (1), (Cp* = η⁵-C₅Me₅) with alkali metal amides leads to the oxoheterometallocubane derivatives [M(μ₃-O)₃{(TiCp*)₃(μ₃-CCH₂)}] [M = Li (2), Na (3), K (4), Rb (5), Cs (6)] containing the naked carbanion μ₃-CCH₂⁻; the addition of triphenylmethanol and tert-butanol to the compounds 2–6 gives rise to the oxoderivatives [{TiCp*(μ-O)}₃(μ-CHMe)(OCR₃)] [R = Me (7), Ph (8)] which show a μ-ethylidene bridge on the surface model Ti₃O₃.