Abstract
Mixed-ligand chelate
complexes of cobalt(111) of the type (β-diketone)Co(salen)
have been synthesized using replacement reactions of the coba1t(111) species XCo(salen) (X = halogen, alkyl
group; salen = tetradentate
Schiff-base ligand) by the appropriate β-diketone, or its sodium or
thallium(1) salt. Studies of their infrared, N.M.R.,and
mass spectra point to the formation of cis
oxygen-bonded β-diketone chelates, in which the salen
group adopts an unusual twisted configuration.
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