15602-41-2Relevant articles and documents
The reaction of hexacarbonylvanadium with aromatic compounds. III. Reduction of the [V(CO)4arene]+ cations to tetracarbonyl-π-cyclohexadienylvanadium derivatives
Calderazzo, Fausto
, p. 429 - 434 (2008/10/08)
The hexacarbonylvanadate of the [V(CO)4C6H6]+ cation reacts with sodium tetrahydridoborate to give the red crystalline volatile V(CO)4C6H7 in about 60% yield. On the basis of infrared and nmr data this is shown to be tetracarbonyl-π-cyclohexadienylvanadium. Methyl-substituted cyclohexadienyl compounds V(CO)4C6H7-n(CH3)n are also described, being obtained by reduction of the methyl-substituted arene vanadium compounds [V(CO)4C6H6-n(CH3)n] +. Similar reactions with NaBD4 yielded the corresponding deuterated compounds. The nmr spectra suggest that the addition of hydrogen occurs preferentially at unsubstituted positions of the aromatic ring in [V(CO)4C6H6-n(CH3)n] +. The type of bonding between the metal and the cyclohexadienyl system and the conformation of the cyclohexadienyl ligand are briefly discussed.