Cyclopentadienyl-ruthenium and -osmium chemistry. XIII. Some complexes containing isonitrile ligands

Abstract

Reactions between isonitriles and RuCl(PPh3)2( ? -C5H5) have given RuCl(CNR)(PPh3)( ? -C5H5)(R = But, c-C6H11, CH2S02C6H4Me- p or C6H40Me- p ) and RUCl(CNBut)2( ? -C5H5); in the presence of NH4PF6, cationic complexes [RU(CNR)(PPh3)2( ? -C5H5)]PF6 (R = But, c-C6H11 or CH2SO2C6H4Me- p ) and [RU(CNBut)2(PP~h3)( ? -C5H5)]PF6 were obtained. Protonation of Ru(CN)- (PPh3)2( ? -C5H5) gives the hydrogen isocyanide derivative [Ru(CNH)(PPh3)2( ? -C5H5)]PF6; tri- alkyloxonium salts alkylate the cyano complex affording [Ru(CNR)(PPh3)2(?-C5H5)]PF6 (R = Me or Et).