A (Nitrido)chromium(V) Function Incorporated in a Keggin-Type Polyoxometalate: [PW11O39CrN]5– – Synthesis, Characterization and Elements of Reactivity

✍ Scribed by Vanina Lahootun; Jeff Karcher; Christine Courillon; Franck Launay; Kristopher Mijares; Eric Maatta; Anna Proust

• Publisher: John Wiley and Sons
• Year: 2008
• Tongue: English
• Weight: 297 KB
• Volume: 2008
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.200800609

✦ Synopsis

Abstract

The (nitrido)chromium(V) derivative [PW~11~O~39~{CrN}]^5–^ (1a) was synthesized by the reaction of the monolacunary [H~3~PW~11~O~39~]^4–^ polyanion with a {CrN}^2+^ function generated in situ. The EPR spectrum of the formed polyoxometalate confirmed the presence of a paramagnetic Cr^V^ complex, and the presence of the nitrido bond was inferred by IR spectroscopy. The reactivity of [PW~11~O~39~{CrN}]^5–^ was investigated and evidence of nucleophilic behaviour towards trifluoroacetic anhydride, forming the acylimido derivative [PW~11~O~39~{Cr^V^NCOCF~3~}]^4–^ (2a), is also reported. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)