Spin crossover in [MnIII(pyrol)3tren] probed by high-pressure and low-temperature x-ray diffraction
MARCHIVIE, Mathieu
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Chimie, Electrochimie Moléculaires et Chimie Analytique [CEMCA]
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Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Chimie, Electrochimie Moléculaires et Chimie Analytique [CEMCA]
MARCHIVIE, Mathieu
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Chimie, Electrochimie Moléculaires et Chimie Analytique [CEMCA]
< Reduce
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Chimie, Electrochimie Moléculaires et Chimie Analytique [CEMCA]
Language
en
Article de revue
This item was published in
Physical Review B: Condensed Matter and Materials Physics (1998-2015). 2005, vol. 72, n° 21, p. 214408 (8 p.)
American Physical Society
English Abstract
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 ...Read more >
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.Read less <
English Keywords
Spin crossover
Crystallogragphy
Phase transformations
X-ray diffraction
High pressure apparatus
Origin
Hal imported