Propionyl complexes of ruthenium derived from the reaction of ethylene with RuHCl(CO)2(PPh3)2 |
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| Authors: | Kevin R Grundy James Jenkins |
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| Institution: | Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, B3H 4J3 Canada |
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| Abstract: | RuHCl(CO)2(PPh3)2 reacts with ethylene under mild conditions (25 psi, 80°C) to yield a propionyl derivative RuCl(CO]C2H5)(CO)(PPh3)2 which is believed to be coordinatively unsaturated. Unlike the acetyl analogue, RuClCO]C2H5(CO)-(PPh3)2 does not isomerize to RuCl(C2H5)(CO)2(PPh3)2 in solution. Under one atmosphere of carbon monoxide, RuCl(CO]C2H5(CO)(PPh3)2 exists in equilibrium with two species believed to be RuCl(CO]C2H5)(CO)2(PPh3)2 and Ru(CO]C2H5)(CO)3(PPh3)2]Cl. RuCl(CO]C2H5)(CO)(PPh3)2 reacts with CO/ AgClO4 to give mer-Ru(CO]C2H5)(CO)3(PPh3)2]ClO4, p-tolylisocyanide (RNC) and NaClO4 to give cis-Ru(CO]C2H5)(CO)(CNR)2(PPh3)2ClO4, and hydrochloric acid to yield the hydroxycarbene complex, RuCl2(CO)(COH]C2H5)(PPh3)2. |
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