Ring Slipped (2,2´-bipyridine)(η3-cyclopentadienyl) (η5-cyclopentadienyl)vanadium(II) and Its Oxidation to (2,2´-bipyridine)bis(η5-cyclopentadienyl)vanadium(III) Tetraphenylborate
Markus Jordan, Wolfgang Saak, Detlev Haase, Rüdiger Beckhaus
Eur. J. Inorg. Chem.2007, 33, 5168-5172.
Reaction of vanadocene(II) (4) with 2,2´-bipyridine (5) leads to (2,2´-bipyridine)vanadocene(II) (6), exhibiting a η3-, η5-metallocene unit, proofed by X-ray diffraction of 6. By selective one electron oxidation employing [Cp2Fe]BPh4 salts the cationic (2,2´-bipyridine)vanadocene(III) derivative 7 is formed, characterized by a classical bent bis(η5-cyclopentadienyl)-vanadium(III) structure. Characteristically structural parameters comparing changements in the oxidation states are discussed. The ring slip parameters are compared to tungsten and other vanadium complexes.