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Structural, magnetic and photomagnetic study of the [Fe(PM–NEA)2(NCS)2] spin crossover complex
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | LETARD, Jean-François | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | KOLLMANSBERGER, Matthias | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CARBONERA, Chiara | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | MARCHIVIE, Mathieu | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | GUIONNEAU, Philippe | |
| dc.date.issued | 2008 | |
| dc.identifier.issn | 1631-0748 | |
| dc.description.abstractEn | The new spin-crossover compound [Fe(PM–NEA)2(NCS)2] with PM–NEA = N-(2-pyridylmethylene)-4-(naphthalene-1-ethynyl)aniline has been synthesized. The temperature dependence of χMT (χM = molar magnetic susceptibility and T = temperature) has revealed a very gradual complete spin conversion between LS (S = 0) and HS (S = 2) states with T1/2 of about 204 K. At 10 K the well-known LIESST (light-induced excited spin state trapping) effect has been observed within the SQUID cavity, by irradiating a powder sample with a Kr+ laser coupled with an optical fibre. The HS → LS relaxation after LIESST has been analyzed with a stretched exponential behaviour. This is consistent with structural analysis, since the presence of naphthalene rings induces a less compact crystal packing than in already reported [Fe(PM–L)2(NCS)2] crystal structures. In particular, the intermolecular interaction network shows a noteworthy dissymmetry on each side of the complex. Furthermore, the structure–property relationship confirms the important role of the metal coordination sphere distortion on the T1/2 value. | |
| dc.language.iso | en | |
| dc.publisher | Académie des sciences (Paris) | |
| dc.subject.en | Coordination chemistry | |
| dc.subject.en | Iron(II) metal ions | |
| dc.subject.en | Spin crossover | |
| dc.subject.en | X-ray diffraction | |
| dc.subject.en | Photomagnetism | |
| dc.subject.en | Structure–property relationship | |
| dc.subject.en | Phase transition | |
| dc.title.en | Structural, magnetic and photomagnetic study of the [Fe(PM–NEA)2(NCS)2] spin crossover complex | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.crci.2008.05.009 | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Comptes Rendus. Chimie | |
| bordeaux.page | 1155-1165 | |
| bordeaux.volume | 11 | |
| bordeaux.issue | 10 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-00342698 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-00342698v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Comptes%20Rendus.%20Chimie&rft.date=2008&rft.volume=11&rft.issue=10&rft.spage=1155-1165&rft.epage=1155-1165&rft.eissn=1631-0748&rft.issn=1631-0748&rft.au=LETARD,%20Jean-Fran%C3%A7ois&KOLLMANSBERGER,%20Matthias&CARBONERA,%20Chiara&MARCHIVIE,%20Mathieu&GUIONNEAU,%20Philippe&rft.genre=article |
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