Issue 6, 1997

Mercury-sensitized photolysis of Me2SiH2 The disproportionation reactions of the Me2SiH radical

Abstract

Mercury-sensitized photolysis of Me 2 SiH 2 yields in the primary step an Me 2 HSi radical and an H atom with a quantum yield of one. The Me 2 HSi radicals undergo a combination reaction [k(2)] as well as two kinds of disproportionation reactions leading to dimethylsilylene [k(3)] and 1-methylsilaethene [k(4)]. The following branching ratios have been determined: k(3)/[k(2)+k(3)+k(4)]=0.64 ±0.10 and k(4)/[k(2)+k(3)+k(4)][gt-or-equal]0.007. For Me 3 Si radicals the branching ratio for disproportionation was also determined and a value of 0.063 was obtained.

Article information

Article type
Paper

J. Chem. Soc., Faraday Trans., 1997,93, 1071-1078

Mercury-sensitized photolysis of Me2SiH2 The disproportionation reactions of the Me2SiH radical

C. Kerst and P. Potzinger, J. Chem. Soc., Faraday Trans., 1997, 93, 1071 DOI: 10.1039/A605762D

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