Abstract

The bis(bidentate) ligands trans- and cis-1,2-C6H10(NCH-2-C5H4N)2 (1 and 2) yield the diplatinum(II) complexes trans- and cis-1,2-[C6H10{NCH-2-C5H4N(PtMe2)}2] (3 and 4, respectively). Reaction of 3 and 4 with [H]+[HOB(C6F5)3]- in MeCN or with HBF4 in the presence of excess CO gave the corresponding electrophilic binuclear complexes trans- and cis-1,2-[C6H10{NCH-2-C5H4N(PtMeL)}2][X]2 (5, trans, L = MeCN, X = [HOB(C6F5)3]; 6, cis, L = MeCN, X = [HOB(C6F5)3]; 7, trans, L = CO, X = BF4; 8, cis, L = CO, X = BF4). The electrophilic complexes 5−8 are formed by selective methyl group protonolysis, and the stereochemistries were confirmed for complexes 7 and 8 by X-ray structure determinations.

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