A spin transition molecular material with a wide bistability domain.
GARCIA, Yann
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Insitut für Anorganische und Analytische Chemie
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Insitut für Anorganische und Analytische Chemie
MOSCOVICI, Jacques
Laboratoire d'Utilisation du Rayonnement Electromagnétiques
Physique des Milieux Denses
Laboratoire d'Utilisation du Rayonnement Electromagnétiques
Physique des Milieux Denses
MICHALOWICZ, Alain
Laboratoire d'Utilisation du Rayonnement Electromagnétiques
Physique des Milieux Denses
See more >
Laboratoire d'Utilisation du Rayonnement Electromagnétiques
Physique des Milieux Denses
GARCIA, Yann
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Insitut für Anorganische und Analytische Chemie
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Insitut für Anorganische und Analytische Chemie
MOSCOVICI, Jacques
Laboratoire d'Utilisation du Rayonnement Electromagnétiques
Physique des Milieux Denses
Laboratoire d'Utilisation du Rayonnement Electromagnétiques
Physique des Milieux Denses
MICHALOWICZ, Alain
Laboratoire d'Utilisation du Rayonnement Electromagnétiques
Physique des Milieux Denses
< Reduce
Laboratoire d'Utilisation du Rayonnement Electromagnétiques
Physique des Milieux Denses
Language
en
Article de revue
This item was published in
Chemistry - A European Journal. 2002, vol. 8, n° 21, p. 4992-5000
Wiley-VCH Verlag
English Abstract
[Fe(hyptrz)3](4-chloro-3-nitrophenylsulfonate)22 H2O (1; hyptrz=4-(3-hydroxypropyl)-1,2,4-triazole) has been synthesized and its physical properties have been investigated by several physical techniques including magnetic ...Read more >
[Fe(hyptrz)3](4-chloro-3-nitrophenylsulfonate)22 H2O (1; hyptrz=4-(3-hydroxypropyl)-1,2,4-triazole) has been synthesized and its physical properties have been investigated by several physical techniques including magnetic susceptibility measurements, calorimetry, and Mössbauer, optical, and EXAFS spectroscopy. Compound 1 exhibits a spin transition below room temperature, together with a very wide thermal hysteresis of about 50 K. This represents the widest hysteresis loop ever observed for an FeII-1,2,4-triazole spin transition material. The cooperativity is discussed on the basis of temperature-dependent EXAFS studies and of the structural features of a CuII analogue. The EXAFS structural model of (1) in both spin states is compared to that obtained for a related material whose spin transition occurs above room temperature. EXAFS spectroscopy suggests that 1,2,4-triazole chain compounds retain a linear character whatever the spin state of the iron(II).Read less <
English Keywords
EXAFS spectroscopy
Iron
Spin crossover
4-triazole
Chain structures
Origin
Hal imported