Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/117543
COMPARTIR / EXPORTAR:
SHARE CORE BASE | |
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
Campo DC | Valor | Lengua/Idioma |
---|---|---|
dc.contributor.author | Roubeau, Olivier | - |
dc.contributor.author | Gamez, Patrick | - |
dc.contributor.author | Teat, Simon J. | - |
dc.date.accessioned | 2015-07-03T11:16:44Z | - |
dc.date.available | 2015-07-03T11:16:44Z | - |
dc.date.issued | 2013 | - |
dc.identifier | doi: 10.1002/ejic.201201126 | - |
dc.identifier | issn: 1434-1948 | - |
dc.identifier | e-issn: 1099-0682 | - |
dc.identifier.citation | European Journal of Inorganic Chemistry (5-6): 934-942 (2013) | - |
dc.identifier.uri | http://hdl.handle.net/10261/117543 | - |
dc.description.abstract | The reaction of 4-phenylimino-1,2,4-triazole (1) with FeII, CoII, NiII and CuII thiocyanate produces a series of analogous dinuclear compounds of formula [M2 (1)5 (NCS)4] (2-5) as demonstrated by single-crystal X-ray diffraction studies of the FeII (2) and CoII (3) analogues. The magnetic properties of [Fe2(1)5(NCS)4]·xMeOH (x = 3.5-5) reveal a partial and gradual spin crossover (SCO) centred at TSCO = 115 K. This is confirmed by its crystal structure solved at 100, 150 and 250 K, which exhibits a gradual decrease of the Fe-N bond lengths with temperature. However, the bulk hydrated form of 2 that is generated upon exposure to air of crystals is a high-spin compound that exhibits weak antiferromagnetic interaction. The exchange coupling among the FeII S = 2 ions within the dinuclear neutral complex was evaluated as J/kB = -1.33(3) K by using the Heisenberg Hamiltonian H = -2JS1·S2. Similarly, the magnetic properties of the NiII (4) and CuII (5) analogues are dominated by moderate and weak antiferromagnetic interactions evaluated as J/kB = -13.9(3) and -0.30(5) K, respectively. The presence of strong spin-orbit coupling of the individual CoII ions impeded the evaluation of the likely antiferromagnetic interaction that leads to a singlet ground state in 3. The reported structures of 2 and 3 are new additions to a very scarce family of dinuclear complexes bearing a unique triple N1,N2-triazole bridge. Owing to its relevance in the peculiar properties of 1D triazolebased SCO materials, which are widely studied for their various potential applications, a structural analysis of this triple N1,N2-triazole bridge in reported structures of FeII and CoII trinuclear and 1D compounds is provided. © 2013 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. | - |
dc.description.sponsorship | P. G. acknowledges the Institució Catalana de Recerca i Estudis Avançats (ICREA). P. G. and O. R. are grateful to the Spanish Ministerio de Economía y Competitividad (MINECO) for funding (Projects CTQ2011-27929-C02-01 and MAT2011-24284). The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences of the U. S. Department of Energy under contract no. DE-AC02-05CH11231. | - |
dc.publisher | Wiley-VCH | - |
dc.rights | closedAccess | - |
dc.subject | Magnetic properties | - |
dc.subject | Spin crossover | - |
dc.subject | Iron | - |
dc.subject | Coordination compounds | - |
dc.subject | Triazole | - |
dc.title | Dinuclear complexes with a triple N1,N2-triazole bridge that exhibit partial spin crossover and weak antiferromagnetic interactions | - |
dc.type | artículo | - |
dc.identifier.doi | 10.1002/ejic.201201126 | - |
dc.date.updated | 2015-07-03T11:16:44Z | - |
dc.description.version | Peer Reviewed | - |
dc.language.rfc3066 | eng | - |
dc.contributor.funder | Institución Catalana de Investigación y Estudios Avanzados | - |
dc.contributor.funder | Ministerio de Economía y Competitividad (España) | - |
dc.contributor.funder | Department of Energy (US) | - |
dc.relation.csic | Sí | - |
dc.identifier.funder | http://dx.doi.org/10.13039/501100003741 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/501100003329 | es_ES |
dc.identifier.funder | http://dx.doi.org/10.13039/100000015 | es_ES |
dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
item.fulltext | No Fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.cerifentitytype | Publications | - |
item.grantfulltext | none | - |
item.openairetype | artículo | - |
Aparece en las colecciones: | (ICMA) Artículos |
Ficheros en este ítem:
Fichero | Descripción | Tamaño | Formato | |
---|---|---|---|---|
accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
23
checked on 21-abr-2024
WEB OF SCIENCETM
Citations
23
checked on 24-feb-2024
Page view(s)
270
checked on 23-abr-2024
Download(s)
94
checked on 23-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.