om6b00381_si_001.cif (6.74 MB)
C–H Activation on an Oxo-Bridged Dititanium Complex: From Alkyl to μ‑Alkylidene Functionalities
dataset
posted on 2016-07-27, 18:36 authored by Juan I. González-Pérez, Avelino Martín, Miguel Mena, Cristina SantamaríaThermal 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.