[Zurück]

M. Tafili-Kryeziu, A. Caneschi, M. Fittipaldi, M. Spina, M. Lantieri, M. Weil, M. Hasegawa, W. Linert:
"Synthesis and characterisation of a family of Fe(II) tetrazole complexes [Fe(C₆mtz)₆]X₂ (X = BF₄ˉ, ClO₄ˉ, PF₆ˉ)";
Journal of Coordination Chemistry, 68 (2015), 19; S. 3457 - 3471.

Based on 1-(cyclohexylmethyl)-1H-tetrazole, a series of mononuclear iron(II) spin-crossover (SCO) complexes with the general formula [Fe(C6mtz)6]X2, where X is the non coordinating anions BF4ˉ (1), ClO4ˉ (2), PF6ˉ (3) have been synthesized and characterized. Temperature dependent magnetic susceptibility measurements for compounds 1, 2 and 3 show a reversible one-step spin crossover (SCO) behavior between high spin (HS, S = 2) and low spin (LS, S = 0) states without hysteresis. The PF6ˉ compound shows spin transition at T1/2 = 213 K at a considerably higher temperature than the other compounds BF4ˉ (T1/2 = 126 K) and ClO4ˉ (T1/2 = 119 K). Tem-perature dependent far-IR and Mossbauer spectra of compounds 2 and 3 were compared with the measured mag-netic susceptibility and confirm the one-step spin crossover behavior of the compounds.

Fe (II) complexes, Tetrazole, Magnetic properties, temperature dependent Far-IR spectroscopy, Mossbauer spectroscopy

http://dx.doi.org/10.1080/00958972.2015.1077951