Spin-crossover and the LIESST effect in [FexCo1‒ x(bpp)2 ][BF4 ] 2 (1.00 ≤ x ≤ 0.77). Comparison with bifunctional solid solutions of iron and cobalt spin-crossover centers
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | CHASTANET, Guillaume | |
| hal.structure.identifier | School of Chemistry [Leeds] | |
| dc.contributor.author | HALCROW, Malcolm Andrew | |
| dc.date.issued | 2017 | |
| dc.identifier.issn | 0277-5387 | |
| dc.description.abstractEn | Co-crystallization of [Fe(bpp)2][BF4]2 and [Co(bpp)2][BF4]2 (bpp = 2,6-di{pyrazol-1-yl}pyridine) from nitromethane-diethyl ether yields homogeneous polycrystalline materials analyzing as [FexCo1‒x(bpp)2][BF4]2 (1.00 ≤ x ≤ 0.77). Thermal spin-crossover in these materials only involves the iron centers, and increasing the cobalt dopant concentration leads to a reduction in T½ and a loss of cooperativity. The materials exhibit the LIESST effect, with all three samples presenting the same T(LIESST) value. LIESST relaxation kinetics have a clear multistep character, which has not been detected before in samples derived from [Fe(bpp)2][BF4]2. Magnetic susceptibility and low-temperature crystallographic data are also presented for the pure precursor complex [Co(bpp)2][BF4]2. | |
| dc.language.iso | en | |
| dc.publisher | Elsevier | |
| dc.subject.en | Iron | |
| dc.subject.en | Cobalt | |
| dc.subject.en | N-donor ligand | |
| dc.subject.en | Spin-crossover | |
| dc.subject.en | Magnetic measurements | |
| dc.subject.en | iron | |
| dc.subject.en | cobalt | |
| dc.subject.en | spin-crossover | |
| dc.subject.en | magnetic measurements | |
| dc.title.en | Spin-crossover and the LIESST effect in [FexCo1‒ x(bpp)2 ][BF4 ] 2 (1.00 ≤ x ≤ 0.77). Comparison with bifunctional solid solutions of iron and cobalt spin-crossover centers | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1016/j.poly.2017.01.029 | |
| dc.subject.hal | Chimie/Chimie de coordination | |
| bordeaux.journal | Polyhedron | |
| bordeaux.page | 5-12 | |
| bordeaux.volume | 136 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01646283 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01646283v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Polyhedron&rft.date=2017&rft.volume=136&rft.spage=5-12&rft.epage=5-12&rft.eissn=0277-5387&rft.issn=0277-5387&rft.au=CHASTANET,%20Guillaume&HALCROW,%20Malcolm%20Andrew&rft.genre=article |
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