The syntheses and structures of mono- and di-bromovinylidenes.

Brown, Neil J.; Fox, Mark A.; Smith, Mark E.; Yufit, Dmitry S.; Howard, Judith A.K.; Low, Paul J.

Abstract

Reactions of metal acetylide complexes M(CCAr)(PP)Cp′ (M = Fe, Ru; Ar = C6H5, C6H4Me-4; PP = (PPh3)2, dppe; Cp′ = Cp, Cp*; not all combinations), or the analogous vinylidene, with cyanogen bromide yield monobromovinylidene complexes [M{CC(Br)Ar}(PP)Cp′]+, isolated as PF6− salts. The trimethylsilyl-capped acetylides M(CCSiMe3)(PP)Cp′ react with cyanogen bromide to give [M(CCBr2)(PP)Cp′]+, the first examples of metal complexes containing a terminal dihalovinylidene ligand, which can be isolated as the BF4− salts. Molecular structures of representative mono- and di-bromovinylidene complexes are reported, together with those of Ru(CCSiMe3)(PPh3)2Cp and Ru(CCSiMe3)(dppe)Cp*.

Citation

Brown, N. J., Fox, M. A., Smith, M. E., Yufit, D. S., Howard, J. A., & Low, P. J. (2009). The syntheses and structures of mono- and di-bromovinylidenes. Journal of Organometallic Chemistry, 694(25), 4042-4048. https://doi.org/10.1016/j.jorganchem.2009.08.027

• Journal Article Type: Article
• Acceptance Date: Aug 19, 2009
• Online Publication Date: Aug 23, 2009
• Publication Date: 2009-12
• Deposit Date: Dec 14, 2011
• Journal: Journal of Organometallic Chemistry
• Print ISSN: 0022-328X
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 694
• Issue: 25
• Pages: 4042-4048
• DOI: https://doi.org/10.1016/j.jorganchem.2009.08.027