| http://www.w3.org/ns/prov#value | - lkyl groups, and X is an anion, c) those of the formula: wherein R11 is an alkyl group and each R10 is independently a hydrogen atom or a substituted or unsubstituted alkyl group, and X is an anion, (d) those of the formula wherein R12 is an alkyl group and each R13 can be independently a hydrogen atom or substituted or unsubstituted alkyl group, n is 1 to 4, and X is an anion, and (e) those of th
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