The preparation, characterisation, and some reactions of [Os3H(X)(CO)9(NMe3)](X = Cl, Br, or I)
Abstract
The clusters [Os3H(X)(CO)10](X = Cl, Br, or I) react with trimethylamine oxide to produce the complexes [Os3H(X)(CO)9(NMe3)]. The trimethylamine ligand of these compounds is readily displaced by P(OMe)3 to give [Os3H(X)(CO)9{P(OMe)3}]. The compound [Os3H(Cl)(CO)9(NMe3)] also reacts with thylene, phenylacetylene, and PPh3 to give [Os3H (Cl)(CO)9( C2H4)], [Os3Cl(CO)10(CHCHPh)], or [Os3H(Cl)(CO)9(PPh3)] respectively. The compound [Os3H(Cl)(CO)8(PPh3)2] can also be prepared by the reaction of [Os3H (Cl)(CO)10] with 2.5 equivalents of Me3NO followed by PPh3. All the products were characterised by i.r. and 1H n.m.r. spectroscopy, and structural assignments made.