Reactions of alkyl- and aryl(ferrocenyl)phosphines with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Reactions of alkyl- and aryl(ferrocenyl)phosphines with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone

Authors:	Daniel A Durfey Christoph Frommen William M Reiff

Institution:	Department of Chemistry, Northeastern University, Boston, MA, USA

Abstract:	Reaction of diphenyl(ferrocenyl)phosphine (1), tri(ferrocenyl)phosphine (2) and ^tbutyl(diferrocenyl)phosphine (3) with one equivalent of 2,3-dichloro-4,5-dicyano-1,4-benzoquinone (DDQ) yields FcPPh₂ • DDQ (4), Fc₃P • DDQ (5) and Fc₂P^tBu • DDQ (6), respectively. Infrared, UV-Vis and ESR spectra of 4-6 are consistent with formation of DDQ⁻ Mössbauer spectroscopy, however, reveals that 4-6 all contain low spin Fe^II suggesting that the radical cation is ligand centered rather than iron centered.

Keywords:	Ferrocenylphosphines Charge transfer complexes Mö ssbauer spectroscopy
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