Photomagnetic properties of an Fe(ii) spin-crossover complex of 6-(3,5-diamino-2,4,6-triazinyl)-2,2'-bipyridine and its insertion into 2D and 3D bimetallic oxalate-based networks.
| hal.structure.identifier | Instituto de Ciencia Molecular [ICMol] | |
| dc.contributor.author | SÁNCHEZ-SÁNCHEZ, Carles | |
| hal.structure.identifier | Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB] | |
| dc.contributor.author | DESPLANCHES, Cédric | |
| hal.structure.identifier | Instituto de Ciencia Molecular [ICMol] | |
| dc.contributor.author | CLEMENTE-JUAN, Juan Modesto | |
| dc.contributor.author | CLEMENTE-LEÓN, Miguel | |
| hal.structure.identifier | Instituto de Ciencia Molecular [ICMol] | |
| dc.contributor.author | CORONADO, Eugenio | |
| dc.date.issued | 2017-02-21 | |
| dc.identifier.issn | 1477-9226 | |
| dc.description.abstractEn | The Fe(ii) complex of the L1 ligand (L1 = 6-(3,5-diamino-2,4,6-triazinyl)-2,2'-bipyridine) has been used as a templating cation for the growth of oxalate-based networks. The magnetic characterization of the [Fe(II)(L1)2](ClO4)2·CH3CN (1) precursor in the solid state has been performed for the first time showing that the low-spin (LS) state is predominating from 2 to 400 K with 10% of Fe(ii), which undergoes a gradual and irreversible spin-crossover above 350 K. 1 presents the LIESST effect with a photo-conversion close to 25% and a T(LIESST) of 49 K. During the preparation of 1, a secondary product of the formula [Fe(II)(L1)(CH3CN)2(H2O)](ClO4)2·CH3CN (2) has been obtained. The magnetic characterization of 2 shows that it contains high-spin (HS) Fe(ii). 1 has afforded two novel oxalate-based compounds, the 2D compound of the formula [Fe(II)(L1)2][Mn(II)Cr(III)(ox)3]2·(CH3NO2)6·(CH3OH)·(H2O)2 (3) and the 3D compound of the formula [Fe(II)(L1)2][Mn(II)Cr(III)(ox)3]2·(CH3CN)3 (4), which have been obtained by changing the synthetic conditions. The magnetic properties show that in 3 the inserted Fe(ii) cation remains in the LS state from 2 to 340 K and presents a partial and irreversible spin-crossover of ∼20% at higher temperatures. In 4, most of the Fe(ii) complexes remain in the LS state from 2 to 230 K and present a partial and irreversible spin-crossover of ∼50% from 230 to 400 K. 3 and 4 do not present the LIESST effect. | |
| dc.language.iso | en | |
| dc.publisher | Royal Society of Chemistry | |
| dc.title.en | Photomagnetic properties of an Fe(ii) spin-crossover complex of 6-(3,5-diamino-2,4,6-triazinyl)-2,2'-bipyridine and its insertion into 2D and 3D bimetallic oxalate-based networks. | |
| dc.type | Article de revue | |
| dc.identifier.doi | 10.1039/C6DT04900A | |
| dc.subject.hal | Chimie/Matériaux | |
| bordeaux.journal | Dalton Transactions | |
| bordeaux.page | 2680-2689 | |
| bordeaux.volume | 46 | |
| bordeaux.issue | 8 | |
| bordeaux.peerReviewed | oui | |
| hal.identifier | hal-01485156 | |
| hal.version | 1 | |
| hal.popular | non | |
| hal.audience | Internationale | |
| hal.origin.link | https://hal.archives-ouvertes.fr//hal-01485156v1 | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Dalton%20Transactions&rft.date=2017-02-21&rft.volume=46&rft.issue=8&rft.spage=2680-2689&rft.epage=2680-2689&rft.eissn=1477-9226&rft.issn=1477-9226&rft.au=S%C3%81NCHEZ-S%C3%81NCHEZ,%20Carles&DESPLANCHES,%20C%C3%A9dric&CLEMENTE-JUAN,%20Juan%20Modesto&CLEMENTE-LE%C3%93N,%20Miguel&CORONADO,%20Eugenio&rft.genre=article |
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