(η6-Arene)ruthenium oxomolybdenum and oxotungsten clusters. Stereochemical non-rigidity of [{Ru(η6-p-MeC6H4Pr i)}4Mo4O16] and crystal structure of [{Ru(η6-p-MeC6H4Pr i)}4W2O10]
Abstract
According to a multinuclear NMR study, the cluster
[{Ru(η6-p-MeC6H4Pr
i)}4Mo4O16] exists as two
isomers, the windmill-like form and the triple-cubane form, which are in
equilibrium in solution, while the tungsten analogue, which has been
obtained together with the double-cubane type cluster
[{Ru(η6-p-MeC6H4Pr
i)}4W2O10] by reaction of
[{Ru(η6-p-MeC6H4Pr
i)Cl2}2] with
(NBun4)2[WO4] in