Steps in the Transfer of Valence Electrons

Individual Steps in the Transfer of Valence Electrons. A number of studies. 

An explanation for the transition of the dissolution reaction from valence 4 to valence 2 with increasing light intensity was given in a model proposed by Kooij and Vamnaekelbergh. They assume the presence of an intermediate Si(l), which is an electron-deficient surface silicon atom and has a catalytic effect on the hydrogen reduction reaction. The essential steps in the reaction scheme are described by the following equations  

This model assumes a rather complicated process, with the involvement of two intermediates, Si(II)iat,ice and Si(I), as well as one F to complete the step of forming Si(II)soiution- It is not convincing that such a multibody reaction step can significantly compete with the much simpler step to form Si(III) in reaction (5.17) which involves only Si(II)iattice. 

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