C–H Activation on an Oxo-Bridged Dititanium Complex: From Alkyl to μ‑Alkylidene Functionalities
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Thermal treatment of the dinuclear compound [{Ti(η5-C5Me5)(CH2SiMe3)2}2(μ-O)] (1) provides the formation of the metallacycle derivatives [Ti2(η5-C5Me5)2(μ-CH2SiMe2CH2)(CH2SiMe3)2(μ-O)] (2) and [Ti2(η5-C5Me5)2(μ-CH2SiMe2CH2)2(μ-O)] (3) and the μ-alkylidene complex [Ti2(η5-C5Me5)2(μ-CH2SiMe2CH2)(μ-CHSiMe3)(μ-O)] (4) by sequential carbon–hydrogen activation processes. The reaction of 3 with tert-butylisocyanide, in 1:1 and 1:2 ratios, leads to the η2-iminoacyl complexes [Ti2(η5-C5Me5)2(μ-tBuNCCH2SiMe2CH2)(μ-CH2SiMe2CH2)(μ-O)] (5) and [Ti2(η5-C5Me5)2(μ-tBuNCCH2SiMe2CH2)2(μ-O)] (6), respectively. The molecular structures of complexes 3, 4, 5, and 6 have been determined by single-crystal X-ray diffraction analyses.
创建时间：
2016-08-02
