RUTHENIUM CARBONYL-COMPLEXES OF N-HETEROCYCLIC MOLECULES .2. PREPARATION, PROTONATION AND DECARBONYLATION REACTIONS OF COMPLEXES WITH A BIDENTATE TERPYRIDYL LIGAND - STRUCTURE OF [RU(CO)2(PHEN)(TPYH)](BF4)3

The complexes Ru(CO)2(CF3SO3)2(bidentate) {bidentate = 2, 2’-bipyridyl (bpy) or 1, 10-phenanthroline (phen)} react with 2, 2':6', 2''-terpyridyl (tpy) forming octahedral [Ru(CO)2(bidentate)(tpy)]2+compounds (II) which contain a bidentate tpy. Complex II (bidentate = phen) can be protonated to give [Ru(CO)2- (phen)(tpyH)](BF4)3the structure of which has been established by X-ray crystallography. Treatment of II with trimethylamine N-oxide in methanol at room temperature gives the monocarbonyl compounds [Ru(CO)(bidentate)(tpy)]2+(IV) which contain a tridentate tpy. Complex IV is also obtained by photolysis of II. © 1990, Taylor & Francis Group, LLC. All rights reserved.