Abstract

The use of the 2-pyridyl oxime ligands (LH) 2-pyridinealdoxime, methyl 2-pyridyl ketone oxime and phenyl 2-pyridyl ketone oxime in Co chemistry has been investigated and led to two families of compounds. The first family includes the mononuclear octahedral, low-spin complexes [Co III(L) 3], while the second family consists of the trinuclear, mixed-valent linear clusters [ Co III 2 Co II(L) 6]X 2 (X = ClO 4 - , PF 6 - ). The latter are prepared by the reactions of the former with an appropriate Co II source. The structural, physical and spectroscopic properties of the complexes are described.

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