Temperature- and pressure-induced switching of the molecular spin state of an orthorhombic iron(II) spin-crossover salt
| hal.structure.identifier | Institut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO] | |
| dc.contributor.author | TISSOT, Antoine | |
| hal.structure.identifier | Department of Chemistry | |
| hal.structure.identifier | Laboratoire de chimie de coordination [LCC] | |
| dc.contributor.author | SHEPHERD, Helena | |
| hal.structure.identifier | Institut de Physique de Rennes [IPR] | |
| dc.contributor.author | TOUPET, Loic | |
| hal.structure.identifier | Institut de Physique de Rennes [IPR] | |
| dc.contributor.author | COLLET, Eric | |
| hal.structure.identifier | Institut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO] | |
| dc.contributor.author | SAINTON, Joëlle | |
| hal.structure.identifier | Laboratoire de chimie de coordination [LCC] | |
| dc.contributor.author | MOLNÁR, Gábor | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GUIONNEAU, Philippe | |
| hal.structure.identifier | Institut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO] | |
| dc.contributor.author | BOILLOT, Marie-Laure | |
| dc.date.issued | 2013 | |
| dc.identifier.issn | 1434-1948 | |
| dc.description.abstractEn | The [(TPA)FeIII(TCC)]+ complex [TPA = tris(2-pyridylmethyl)amine, TCC2- = 3,4,5,6-tetrachlorocatecholate dianion] forms a molecular solid with the SbF6- anion, which exhibits an incomplete S = 1/2 ↔ S = 5/2 thermal spin-crossover process centered at 250 K. Single-crystal X-ray diffraction, Raman spectroscopy, and magnetic measurements of this orthorhombic polymorph were performed to delineate the spin-state thermo- and piezoswitching in relation to the structural and elastic properties. Indeed, a pressure-induced spin crossover (centered at P1/2 ≈ 1.65 kbar, T = 294 K) concomitant with unit-cell contraction was observed by applying a hydrostatic pressure to the single crystal. Under ambient conditions, the piezo-induced transition, like that induced thermally, is relatively gradual, which probably reflects a similar mechanism in response to both stimuli. Except for a 47 K shift, the spin-crossover curves of the isostructural SbF6- and PF6- salts compare well. They are discussed with respect to structural anisotropy and pressure effects. | |
| dc.language.iso | en | |
| dc.publisher | Wiley-VCH Verlag | |
| dc.subject.en | Iron | |
| dc.subject.en | Spin crossover | |
| dc.subject.en | Raman spectroscopy | |
| dc.subject.en | X-ray diffraction | |
| dc.title.en | Temperature- and pressure-induced switching of the molecular spin state of an orthorhombic iron(II) spin-crossover salt | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1002/ejic.201201059 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | European Journal of Inorganic Chemistry | |
| bordeaux.page | 1001-1008 | |
| bordeaux.volume | 2013 | |
| bordeaux.issue | 5-6 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00795611 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00795611v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=European%20Journal%20of%20Inorganic%20Chemistry&rft.date=2013&rft.volume=2013&rft.issue=5-6&rft.spage=1001-1008&rft.epage=1001-1008&rft.eissn=1434-1948&rft.issn=1434-1948&rft.au=TISSOT,%20Antoine&SHEPHERD,%20Helena&TOUPET,%20Loic&COLLET,%20Eric&SAINTON,%20Jo%C3%ABlle&rft.genre=article |
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