Abstract
Abstract Novel mono- and trinuclear iron(III) complexes with mixed ligands, FeIII(acac)(N-PhO-sal)(MeOH) 1 and FeIII3(acac)(N-PhO-sal)4 2 have been prepared and characterized, where acacH and N-PhOH-salH denote acetylacetone and N-2-hydroxyphenyl-salicylideneamine, respectively. The variable temperature magnetic susceptibilities (2-350 K) for complex 2 indicate that there is an intramolecular antiferromagnetic interaction among the iron(III) ions, and that spin-crossover behavior may take place from S = 5/2, 5/2 and 5/2 ground states to S = 1/2, 5/2 and 1/2 (Fe1, Fe2 and Fe1*) near 60 K and below.
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