| http://www.w3.org/ns/prov#value | - wherein MH, M???H, D and x are defined above and each occurrence of R, R1, R2, R4 and R5 is independently the same or different, and each is a hydrocarbon radical, an alkoxy radical or alkenyloxy radical containing from about 1 to 50 carbon atoms, in the presence of a precious metal catalyst, and more specifically a rhodium catalyst, under selective hydrosilylation conditions, with an unsaturated
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