Abstract
The thermal activation of a triphenylphosphine P−C bond of the 48-electron cationic cluster complex [Ru3(μ3-ampy)(PPh3)2(CO)8][BF4] (2; Hampy = 2-amino-6-methylpyridine) leads to the phenyl derivative [Ru3(μ-Ph)(μ3-ampy)(μ-PPh2)(PPh3)(CO)7][BF4] (3). Treatment of 3 with carbon monoxide regenerates 2 via the 50-electron intermediate [Ru3(μ-Ph)(μ3-ampy)(μ-PPh2)(PPh3)(CO)8][BF4]. These reactions represent the first reversible triphenylphosphine P−C bond activation reaction reported in carbonyl cluster chemistry. The neutral acyl derivative [Ru3(μ-PhCO)(μ-Cl)(μ3-ampy)(μ-PPh2)(PPh3)(CO)5], which arises from the reaction of 3 with [PPN]Cl, has been characterized by X-ray diffraction methods.
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