Abstract
Triruthenium dodecacarbonyl reacts with high pressure PF 3 or with PF 3/CO mixtures to yield two series of compounds. At high PF 3 pressures, the mononuclear species Ru(PF 3) x (CO) 5− x ( x = 5, 4 and 3) are the main products with only traces of Ru(PF 3) 2(CO) 3 and Ru(PF 3)(CO) 4 being found. With high carbon monoxide pressure and less PF 3, the species Ru 3(PF 3) y (CO) 12− y ( y = 0–6) are the main products. It is seen that Ru 3(CO) 12 can have up to six CO groups replaced sequentially before the cluster is broken followed by the formation of the mononuclear species. The evidence shows that the Ru(PF 3) x (CO) 5− x species are stereochemically non-rigid.
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