Journal
MONATSHEFTE FUR CHEMIE
Volume 140, Issue 7, Pages 815-828Publisher
SPRINGER WIEN
DOI: 10.1007/s00706-008-0096-0
Keywords
Spin crossover; Exchange interaction; Dinuclear iron(III) complexes; Schiff-base ligands
Categories
Funding
- ESF [COST-D35]
- Slovakia [VEGA 1/0213/08, APVV 0006-07, COST-0006-06, VVCE-0004-07]
- Czech Republic [MSM6198959218, KAN115600801]
- Fonds zur Forderung der Wissenschaftlichen Forschung in Osterreich, Austria [19335N17]
- Hochschuljubilaumstiftung der Stadt Wien [H-01684/2007]
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A series of dinuclear Fe(III) complexes was synthesized in which the Schiff-base blocking ligand L-5 coordinates each of the centers which are linked by a bidentate, bipyridine-type ligand. For these systems, [(LFeIII)-Fe-5{bridge} (FeL5)-L-III](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).
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