Silane compared with methane

On the other hand, it is unlikely that methylene is formed from methane or other hydrocarbons in the pyrolysis of coke. In contrast to methylene, its analog silylene is a product of the pyrolysis of silane and disilane (8-17 Purnell and Walsh, 1966 Bowrey and Purnell, 1970). Laser-induced fluorescence was used to study the formation of silylene and its reactivity (see, e.g., Baggott et al., 1988 Jasinski and Chu, 1988), but silylene is not within the scope of this book as there are no diazo compounds involved in its chemistry. Literature in which the reactivity of silylene is compared with that of methylene is reviewed briefly in a publication of Skancke (1993, p. 640). 

The electron-impact spectra of methane have been compared with those of tetrafluoromethane and silane the spectra of all three molecules have been compared with the corresponding photoionization and photoelectron spectra. The relatively new technique of threshold electron-photoion coincidence mass spectrometry has been applied to, inter alia, methane and PH4]-methane. The technique permits the direct determination of the kinetics of dissociation of a molecular ion as a function of that ion. Thus, fragmentation of CHJ and CDJ has been determined as a function of internal energy and the results have been compared to previous photoionization, charge-exchange, and photoelectron-photoion coincidence mass-spectrometric results and to theoretical models. ... 

The production of Si-H containing compounds 7b-9b as the major products suggests that both 6b and hydrogen chloride reacted with the same silicon atom, and the reactivities of the two reactants are comparable. The minor products 3b and 4b are derived from the direct reaction of silicon with a gaseous mixture of (chloromethyl)dichloromethyl-silane, formed by the decomposition of the reactant 6b during the reaction, and hydrogen chloride. It has been reported that tris(chlorosilyl) methanes do not decompose to bis(chlorosilyl)methanes under the reaction conditions.20... 

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