Syntheses of polyfluorophenylcobalt(III) schiff base complexes using organothallium reagents

M. F. Corrigan, G. B. Deacon, B. O. West, D. G. Vince

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The complexes RCo(acacen) [R = C6F5, p-HC6F4, or o-HC6F4; H2acacen = N,N′-ethylenebis(acetylacetonimine)] and RCo(salen) [R = C6F5 or p-HC6F4; H2salen = N,N′-ethylenebis(salicylaldimine)] have been prepared by reaction between Co(acacen) or Co(salen) and the appropriate bromobis(polyfluorophenyl)thallium(III) compounds, and have been isolated as pyridinates. Spectroscopic evidence for formation of C6F5Co(salophen) [H2salophen = N,N′-o-phenylenebis(salicylaldimine)] has also been obtained. The reactivity of the thallium compounds increased in the sequence Ph2TlBr ≪ (o-HC6F4)2TlBr < (p-HC6F4)2TlBr < (C6F5)2TlBr, and of the cobalt complexes in the sequence Co(salophen) < Co(salen) < Co(acacen). Possible mechanisms are discussed.

Original languageEnglish
Pages (from-to)119-125
Number of pages7
JournalJournal of Organometallic Chemistry
Issue number1
Publication statusPublished - 27 Jan 1976

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