GUIONNEAU, Philippe; MARCHIVIE, Mathieu; GARCIA, Yann; HOWARD, Judith A. K.; CHASSEAU, Daniel

doi:10.1103/PhysRevB.72.214408

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GUIONNEAU, Philippe
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

MARCHIVIE, Mathieu
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Chimie, Electrochimie Moléculaires et Chimie Analytique [CEMCA]

GARCIA, Yann
Unité de Chimie des Matériaux Inorganiques et Organiques [UCL CMAT]

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Physical Review B: Condensed Matter and Materials Physics (1998-2015). 2005, vol. 72, n° 21, p. 214408 (8 p.)

American Physical Society

Resumen en inglés

The interplay between the solid-state spin-crossover features and the structural properties is analyzed for the [MnIII(pyrol)3tren] complex on the basis of high-pressure and low-temperature single-crystal x-ray-diffraction experiments. In particular, the low-temperature (30 K, 105 Pa) low spin crystal structure is compared to the low-temperature (60 K, 105 Pa) high spin and to the high-pressure (293 K, 1.00 GPa) high spin crystal structures. The low-temperature structural properties show the structural modifications due to the spin crossover in a Mn(III) complex. Comparison of these structural modifications to those described for mononuclear Fe(II) spin-crossover compounds emphasizes significant differences, such as in bond length variation and polyhedron distortion, for example. Elsewhere, analysis of the high-pressure data shows that the internal stress on the metal ion is not the cause of the occurrence of the thermal spin crossover, contrary to a general belief.< Leer menos

Palabras clave en inglés

Spin crossover

Crystallogragphy

Phase transformations

X-ray diffraction

High pressure apparatus

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Spin crossover in [MnIII(pyrol)3tren] probed by high-pressure and low-temperature x-ray diffraction

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Este ítem está publicado en

Resumen en inglés

Palabras clave en inglés

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