3; and ???SO2???CF3); (i) a fluorine atom; (j) an alkene (???CH???CR2 or ???CH???CHR) where each R independently may be for example a straight chain alkyl group having for example 1 to about 20 carbon atoms, particularly 1 to about 12 carbon atoms, such as pentyl, decyl and dodecyl, a branched alkyl group having for example 3 to about 40 carbon atoms, particularly 3 to about 30) carbon atoms such