c 2 h 5 3 u2014 si c 6 h 5 3 u2014 si oh 3 u2014 si oc 2 h 5 3 u2014 si o u2212 na 3 u2014 si ch 3 och 3 2 u2014 si oh 2 oc 6 h 5 and u2014 si oc 2 h 5 och 3 2 typical sulfonyl silicon compounds include methanesulfonyl trimethylsilane benzenesulfonyltriethoxysilane methanesulfonyltrihydroxysilane and ethanesulfonylethoxydimethoxysilane with methanesulfonyl trimethylsilane being preferred although r u2032 r u2033 and r u2032 r u2033 are defined above with respect to preferences for the respective sulfonyl sulfur phosphorus and silicon compounds r u2032 r u2033 and r u2032 u2033 can in general be any substituted or unsubstituted alkyl group containing typically from 1 to 24 carbon atoms or any substituted or unsubstituted aryl group containing typically from 6 to 30 carbon atoms organic r u2032 r u2033 and r u2032 r u2033 groups can also be polymeric materials such as polyolefins or polyurethanes inorganic r u2032 r u2033 and r u2032 r u2033 groups include h oh sh nh 2 sioh cl and metal ions such as na mg 2 ni 2 and al 3 the amount of sulfonyl containing compound is generally suitable in a range of from.