Synthesis and Characterization of [OsCl2(=C=CHR)(PPh3)2] and Related Complexes

✍ Scribed by Ting Bin Wen; Wai Yiu Hung; Zhong Yuan Zhou; Man Fung Lo; Ian D. Williams; Guochen Jia

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 215 KB
• Volume: 2004
• Category: Article
• ISSN: 1434-1948
• DOI: 10.1002/ejic.200400003

✦ Synopsis

Abstract

Treatment of [OsCl~2~(PPh~3~)~3~] with HC≡CR (R = Ph, p‐tolyl, CMe~3~) in the presence of HCl gives the corresponding trichloro(carbyne) complexes [OsCl~3~(≡CCH~2~R)(PPh~3~)~2~] in good yields. The vinylidene complexes [OsCl~2~(=C=CHR)(PPh~3~)~2~] (R = Ph, p‐tolyl, CMe~3~) are, in turn, prepared from the reactions of the carbyne complexes [OsCl~3~(≡CCH~2~R)(PPh~3~)~2~] with NEt~3~. These new vinylidene complexes are hygroscopic and react with H~2~O to give (aqua)(vinylidene) complexes [OsCl~2~(H~2~O)(=C=CHR)(PPh~3~)~2~]. The structures of several of these new complexes have been determined by X‐ray diffraction studies. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)