Ring-Slipped (2,2′-Bipyridine)(η3-cyclopentadienyl)(η5-cyclopentadienyl)vanadium(II) and Its Oxidation to (2,2′-Bipyridine)bis(η5-cyclopentadienyl)vanadium(III) Tetraphenylborate

✍ Scribed by Markus Jordan; Wolfgang Saak; Detlev Haase; Rüdiger Beckhaus

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 174 KB
• Volume: 2007
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.200700904

✦ Synopsis

Abstract

Reaction of vanadocene(II) (4) with 2,2′‐bipyridine (5) leads to (2,2′‐bipyridine)vanadocene(II) (6), exhibiting a η^3^,η^5^‐metallocene unit, proved by X‐ray diffraction. By selective one‐electron oxidation employing [Cp~2~Fe]BPh~4~ salts, the cationic (2,2′‐bipyridine)vanadocene(III) derivative 7 is formed. It is characterized by a classical bent bis(η^5^‐cyclopentadienyl)vanadium(III) structure. Characteristic structural details comparing changes in the oxidation states are discussed. The ring‐slip parameters are compared to those of tungsten and other vanadium complexes. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007)