Abstract
The reaction of [Ru3(CO)12] with the lithium salt of benzophenone imine (LiNCPh2) followed by protonation with trifluoroacetic acid leads to the η1-1-azavinylidene cluster complex [Ru3(μ-H)(μ-NCPh2)(CO)10] (1). Compound 1 cannot be prepared by direct reaction of [Ru3(CO)12] with benzophenone imine under thermal conditions. Carbonyl substitution and thermolysis reactions on compound 1 and on some of its derivatives are described. Complex 1 reacts with 1 and 2 equiv of bis(diphenylphosphino)methane (dppm) at room temperature to give the substituted derivatives [Ru3(μ-H)(μ-NCPh2)(μ-dppm)(CO)8] (2) and [Ru3(μ-H)(μ-NCPh2)(μ-dppm)(dppm)(CO)7] (3), respectively. In both complexes the three bridging ligands span the same Ru−Ru edge; in addition, complex 3 contains an η1-dppm ligand occupying an equatorial site on the unique Ru atom. An X-ray structure analysis of 3·0.5CH2Cl2 is reported. Thermolysis of complex 2 in THF at reflux temperature leads to [Ru3(μ-H)(μ3-NCPh2)(μ-dppm)(CO)7] (4), a compound which contains...
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