Spin crossover in [MnIII(pyrol)3tren] probed by high-pressure and low-temperature x-ray diffraction
| Autor: | Guionneau, Philippe, Marchivie, Mathieu, Garcia, Yann, Howard, Judith A. K., Chasseau, Daniel |
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| Přispěvatelé: | Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB), Chimie, Electrochimie Moléculaires et Chimie Analytique (CEMCA), Institut Brestois Santé Agro Matière (IBSAM), Université de Brest (UBO)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC), Unité de Chimie des Matériaux Inorganiques et Organiques (UCL CMAT), Université Catholique de Louvain = Catholic University of Louvain (UCL), Chemical Crystallography Group, Chemistry Department, Durham University |
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: | |
| Zdroj: | Physical Review B: Condensed Matter and Materials Physics (1998-2015) Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2005, 72 (21), 214408 (8 p.). ⟨10.1103/PhysRevB.72.214408⟩ |
| ISSN: | 1098-0121 1550-235X |
| Popis: | International audience; 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. |
| Databáze: | OpenAIRE |
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