Synthesis and characterization of ferrocenylchalcogenopropargyl complexes [Fe(η5-C5H4EICH2C≡CH)2] (EI = Se, S) and their reactions to form unusual ferrocenyl-containing metal clusters with eclipsed Cp rings and new five-membered FeEICHC=CH2 ring ligand system

Mathur, Pradeep ; Singh, Vinay K. ; Mobin, Shaikh M. ; Srinivasu, Chimalakonda ; Trivedi, Rajiv ; Bhunia, Anjan K. ; Puranik, Vedavati G. (2004) Synthesis and characterization of ferrocenylchalcogenopropargyl complexes [Fe(η5-C5H4EICH2C≡CH)2] (EI = Se, S) and their reactions to form unusual ferrocenyl-containing metal clusters with eclipsed Cp rings and new five-membered FeEICHC=CH2 ring ligand system Organometallics, 24 (3). pp. 367-372. ISSN 0276-7333

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Official URL: http://pubs.acs.org/doi/abs/10.1021/om049226r?prev...

Related URL: http://dx.doi.org/10.1021/om049226r

Abstract

The new bis(chalcogenopropargyl)ferrocene complexes [Fe(η5-C5H4EICH2C≡CH)2] (EI = Se, 1; EI = S, 2) have been prepared by treatment of the dilithiated [Fe(η5-C5H4Li)2] with Se or S powder, followed by reaction with propargyl bromide. Reaction of 1 and 2 with [Fe2M(μ3-E)2(CO)9] (E = S, Se and M = Fe, Ru) forms new clusters which feature an unusual five-membered FeEICHC=CH2 ring with a π bond between the olefinic unit and the Fe atom, and the Cp rings adopt an eclipsed arrangement. The structures of 1 and [Fe(η5-C5H4EICH2C≡CH)(η5-C5H4{Fe2M(CO)8(μ-E)(μ3-E)(EICHCCH2)})] (M = Fe, E = Se, EI = Se, 3; M = Fe, E = S, EI = Se, 4; M = Ru, E = S, EI = Se, 7) have been determined crystallographically.

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