期刊
INORGANICA CHIMICA ACTA
卷 429, 期 -, 页码 93-98出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2015.01.047
关键词
Iron(III) complex; Spin crossover; Imidazole; N2O2 Schiff-base ligand; Hydrogen bonds; Hysteresis
资金
- Japan Society for the Promotion of Science, KAKENHI [00248556]
Spin crossover (SCO) iron(III) complexes exhibiting thermal hysteresis, [Fe-III(Him)(2)(3-MeOsalen)]center dot H2O center dot EtOH center dot X (Him = imidazole, 3-MeOsalen = N, N'-bis(3-methoxysalicylidene) ethylenediaminato, and X = PF6, AsF6, SbF6), were synthesized in ethanol. The FeIII ion has an octahedral coordination geometry with N2O2 donor atoms of the planar tetradentate ligand (3-MeOsalen) and two nitrogen atoms of two imidazoles at the axial positions. Through H2O and EtOH the complex-cations are assembled into a hydrogen-bonded 2D network structure and the anion X is accommodated in the void of the 2D network. The temperature dependences of the magnetic susceptibilities revealed an abrupt and two-step spin transition with thermal hysteresis for the PF6 and AsF6 salts. (C) 2015 Elsevier B.V. All rights reserved.
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