SELECTIVE CARBONYL SUBSTITUTION-REACTIONS ON [RU3(MU-H)(MU-3-AMPY)(CO)9] AND ON ITS PROTONATED DERIVATIVE - CRYSTAL-STRUCTURE OF [RU3(MU-H)2(MU-3-AMPY)(CO)9][BF4] (HAMPY = 2-AMINO-6-METHYLPYRIDINE)

The reactions of [Ru3(μ-H)(μ3-ampy)(CO)9] (1) (Hampy = 2-amino-6-methylpyridine) with PPh3 or dppm lead to replacement of one or two of the equatorial CO ligands that are cis to the bridging NH fragment and cis to the hydride. In contrast, the reactions of the protonated derivative [Ru3(μ-H)2(μ3-ampy)(CO)9][BF4] (2) with PPh3 or dppm involve replacement of equatorial CO ligands only on the ruthenium atoms bonded to one hydride ligand. © 1990.