Syntheses and reactions of some cluster complexes containing C4ligands with iron, ruthenium and cobalt carbonyls
Abstract
Some reactions of W(CCCCH)(CO)3Cp with metal cluster carbonyls have been studied. With Ru3(CO)10(NCMe)2 the initial product is Ru3{μ3-HC2CC[W(CO)3Cp]}(μ-CO)(CO)9, which readily transforms into Ru3(μ-H){μ3-C2CC[W(CO)3Cp]}(CO)9. Similar chemistry is found with the dppm analogue: three interconverting isomers of Ru3(μ-H){μ3-C2CC[W(CO)3Cp]}(μ-dppm)(CO)7 can be detected in solution. Reactions of Ru3(μ-H){μ3-C2CC[W(CO)3Cp]}(CO)9 with Ru3(CO)12 afforded {Ru3(μ-H)(CO)9}(μ3-η2∶μ3-η2-C2C2){Ru2W(CO)8Cp}, while Fe2(CO)9 gave an analogous product in which three of the ruthenium sites are partially occupied by a total of one or two iron atoms; with Co2(CO)8 the vinylidene cluster {CoRu2(CO)9}(μ3-η2∶μ3-η2-CCHC2){CoRuW(CO)8Cp} was formed, the cluster-bound