Mori Shigeru, F. Okada, T. Kinoshita
Dec 13, 1995
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0
Influential Citations
5
Citations
Journal
Journal of Organometallic Chemistry
Abstract
Abstract The spontaneous unimolecular dissociation reaction of the molecular ion of dimethoxydiphenylsilane (1) has been investigated by mass-analyzed ion kinetic energy spectroscopy, collision-induced dissociation, a D-labeling study and high resolution data. The results are compared with those of the corresponding carbon analogue, dimethoxydiphenylmethane (2). The fragmentation of the metastable 1.+ is more complex than that of 2.+. The latter eliminates the methoxy radical only, whereas the former eliminates methanol and benzene molecules, and C7H7 radical in addition to the formation of the molecular ion of biphenyl (3). The intensity of the [MC6H5]+ ion at m/z = 167 is much larger than that of [MOCH3]+ ion at m/z = 213 in the normal mass spectrum of 1. On the contrary, in the case of 2, the intensity of [MC6H5]+ ions is smaller than that of [MOCH3]3+ ions.