Synthetic applications of the photolysis of the cyclopentadienyliron-(ρ-xylene) cation

Thomas P. Gill, Kent R. Mann

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Abstract

Photolysis of CpFe(ρ-xylene)+ (Cp = η5-cyclopentadienyl) in the presence of suitable 6- or 2-electron donor ligands results in replacement of the aromatic ring with one 6-electron or three 2-electron donor ligands. The compounds [CPFe(η6-C7H8)]BF4 (C7H8 = cycloheptatriene), [CpFe(η6-C8H8)]PF6, (C8H8 = cyclooctatetraene), [CpFe(η6-PCP)]PF6 (PCP = 2,2-paracyclophane), [CpFe-(P(OCH3)3)3]PF6 and [CpFe(P(OCH2CH3)3)3]PF6 were prepared in this manner. The compound [CpFe(TM4)3FeCp](PF6)2 · CH3COCH3 (TM4 = 2,5-dimethyl-2,5 diisocyanohexane) was prepared in two steps. First, [CpFe(ρ-xylene)]PF6 was irradiated with an excess of the free TM4 ligand producing a mixture of [CpFe(TM4)3]+ and [CpFe(TM4)3FeCp]2+. An additional equivalent of [CpFe(p-xylene)]PF6 was added to this mixture and photolysis yielded [CpFe(TM4)3FeCp](PF6)2 · CH3COCH3.

Original languageEnglish (US)
Pages (from-to)65-71
Number of pages7
JournalJournal of Organometallic Chemistry
Volume216
Issue number1
DOIs
StatePublished - Aug 11 1981

Bibliographical note

Funding Information:
Support of this research through a DuPont Young Faculty Grant, the University of Minnesota Graduate School, Research Corporation, and the donors of the Petroleum Research Fund, administered by the American Chemical Society, is gratefully acknowledged.

Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.

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