CARBONYL TRANSITION-METAL COMPLEXES OF A SILABORATE LIGAND

Reaction between three equivalents of the silaborate [NEt4][MeSiB10H12 ] (2) and one equivalent of [RU3(CO)(12)] resulted in almost quantitat ive formation of the mononuclear transition metal complex [NEt4][Ru(CO )(3)(eta(5)-MeSiB10H10)] (5), which was characterized by X-ray structu re analysis. The trinuclear ruthenium complex [NEt4][RU3(CO)(8)(eta(5) -MeSiB10H10)] (7) was synthesized in high yield from the reaction of o ne equivalent of 2 and [Ru-3(CO)(12)]. The cluster 7 reacts with two e quivalents of PMe2Ph with substitution of two carbonyl groups to give the substitution product [NEt4][RU3(CO)(6)(PMe2Ph)(2)(eta(5)-MeSiB10H1 0)] (8).