Non-classical Fe(II) spin crossover behaviour leading to an unprecedented extremely large apparent thermal hysteresis of 270 K : application for displays
(1997) Journal of Materials Chemistry — Vol. 7, n° 6, p. 857-858 (1997)
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- Abstract
- [Fe(hyetrz)3 ](anion)2 ·3H2O [hyetrz=4-(2′-hydroxyethyl)-1,2,4-triazole, anion=3-nitrophenylsulfonate] is a novel linear polynuclear FeII spin-crossover compound. The low-spin to high-spin transition accompanied by a pronounced thermochromic effect occurs at 370 K in a very abrupt way. Just before this temperature, the three non-coordinated water molecules are removed. The dehydrated high-spin form remains stable down to ca. 100 K, where it transforms into a new low-spin form, implying that this material shows an apparent thermal hysteresis width of 270 K. Applications of this material are discussed.
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Garcia, Y., van Koningsbruggen, P. J., Codjovi, E., Lapouyade, R., Kahn, O., & Rabardel, L. (1997). Non-classical Fe(II) spin crossover behaviour leading to an unprecedented extremely large apparent thermal hysteresis of 270 K : application for displays. Journal of Materials Chemistry, 7(6), 857-858. https://doi.org/10.1039/a701242j (Original work published 1997)