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Control of the spin state by charge and ligand substitution: two-step spin crossover behaviour in a novel neutral iron(II) complex

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Control of the spin state by charge and ligand substitution: two-step spin crossover behaviour in a novel neutral iron(II) complex

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dc.contributor.author Seredyuk, Maksym es_ES
dc.contributor.author Znovjyak, Kateryna O. es_ES
dc.contributor.author Kusz, Joachim es_ES
dc.contributor.author Nowak, Maria es_ES
dc.contributor.author Muñoz Roca, María del Carmen es_ES
dc.contributor.author Real, Jose Antonio es_ES
dc.date.accessioned 2016-09-20T13:59:16Z
dc.date.available 2016-09-20T13:59:16Z
dc.date.issued 2014-11-21
dc.identifier.issn 1477-9226
dc.identifier.uri http://hdl.handle.net/10251/70171
dc.description.abstract The influence of the charge and steric hindrance on the spin state of a series of four monomeric Fe-II complexes derived from the tridentate tigands 2-(1H-benzoimidazol-2-yl)-1,10-phenanthroline (Hphenbi) and 2-(1H-benzoimidazol-2-yl-9-methyl-1,10-phenanthroline (Hmphenbi) and their deprotonated forms (phenbi(-), mphenbi(-)) are investigated. The crystal structure and magnetic properties show that [Fe(Hphenbi)(2)](BF4)(2)center dot 1.5C(6)H(5)NO(2)center dot H2O (1) and its neutral form [Fe(phenbi)(2)]center dot 2CHCl(3)center dot H2O (2) are low-spin complexes at 400 K due to the strong ligand field imparted by the terpyridine-like tigand. In contrast, the steric hindrance induced by the methyl group in [Fe(Hmphenbi)21(BF4)2 (3) stabilizes the high-spin state of the Fe-II ion at all temperatures. Application of a hydrostatic pressure of 0.43 GPa shows that 3 displays incomplete thermal-induced spin crossover behaviour. However, upon deprotonation of the ligand the resulting neutral complex [Fe(mphenbi)(2)]center dot 2CHCl(3) (4) shows a complete two-step spin crossover behaviour at ambient pressure. es_ES
dc.description.sponsorship This work was supported by the Spanish Ministerio de Economia y Competitividad (MINECO) and FEDER funds (CTQ2013-46275-P), and the Generalitat Valenciana through PROMETEO/2012/049. MS thanks the EU for a Marie Curie fellowship (IIF-253254). en_EN
dc.language Inglés es_ES
dc.publisher Royal Society of Chemistry es_ES
dc.relation.ispartof Dalton Transactions es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Iron complex es_ES
dc.subject Ligand substitution es_ES
dc.subject Spin crossovers es_ES
dc.subject Spin state es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title Control of the spin state by charge and ligand substitution: two-step spin crossover behaviour in a novel neutral iron(II) complex es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1039/c4dt01885k
dc.relation.projectID info:eu-repo/grantAgreement/MINECO//CTQ2013-46275-P/ES/SENSORES Y MEMORIAS BASADOS EN MATERIALES BIESTABLES CON TRANSICION DE ESPIN/ es_ES
dc.relation.projectID info:eu-repo/grantAgreement/EC/FP7/253254/EU/Tailoring crossover properties by electric field in nano-structural and liquid crystalline molecular based magnetic materials/
dc.relation.projectID info:eu-repo/grantAgreement/GVA//PROMETEO%2F2012%2F049/ es_ES
dc.rights.accessRights Cerrado es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Física Aplicada - Departament de Física Aplicada es_ES
dc.description.bibliographicCitation Seredyuk, M.; Znovjyak, KO.; Kusz, J.; Nowak, M.; Muñoz Roca, MDC.; Real, JA. (2014). Control of the spin state by charge and ligand substitution: two-step spin crossover behaviour in a novel neutral iron(II) complex. Dalton Transactions. 43:16387-16394. https://doi.org/10.1039/c4dt01885k es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion http://dx.doi.org/10.1039/c4dt01885k es_ES
dc.description.upvformatpinicio 16387 es_ES
dc.description.upvformatpfin 16394 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 43 es_ES
dc.relation.senia 278708 es_ES
dc.identifier.eissn 1477-9234
dc.contributor.funder Generalitat Valenciana es_ES
dc.contributor.funder Ministerio de Economía y Competitividad es_ES
dc.contributor.funder European Commission
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