Dinuclear Fe(III) complexes with spin crossover |
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| Authors: | Ivan Nemec Roman Boča Radovan Herchel Zdeněk Trávníček Milan Gembický Wolfgang Linert |
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| Affiliation: | (1) Institute of Inorganic Chemistry, Slovak University of Technology, 812 37 Bratislava, Slovakia;(2) Department of Inorganic Chemistry, Palacky University, 77147 Olomouc, Czech Republic;(3) Department of Chemistry, State University of New York at Buffalo, Buffalo, NY 14260, USA;(4) Institute of Applied Synthetic Chemistry, Vienna University of Technology, 1060 Vienna, Austria |
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| Abstract: | Abstract A series of dinuclear Fe(III) complexes was synthesized in which the Schiff-base blocking ligand L5 coordinates each of the centers which are linked by a bidentate, bipyridine-type ligand. For these systems, [L5FeIII{bridge}FeIIIL5](BPh4)2, thermally induced spin crossover is observed. The corollary of the systems is that the spin crossover interferes with the magnetic exchange interaction. The overlap of the energy bands of the LL and HH reference states (L, low-spin; H, high-spin) causes the exchange interaction to act against the spin crossover (leading to incompleteness or gradual behavior). Graphical abstract  |
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| Keywords: | Spin crossover Exchange interaction Dinuclear iron(III) complexes Schiff-base ligands |
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