English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/117646
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

Influence of supramolecular bonding contacts on the spin crossover behaviour of iron(II) complexes from 2,2′-dipyridylamino/s-triazine ligands

AutorRoubeau, Olivier; Teat, Simon J.; Gamez, Patrick
Fecha de publicación2013
EditorRoyal Society of Chemistry (Great Britain)
CitaciónDalton Transactions 42(19): 7120-7130 (2013)
ResumenReactions of the related ligands 2-(N,N-bis(2-pyridyl)amino)-4,6- bis(phenoxy)-(1,3,5)triazine (L1) and 2-(N,N-bis(2-pyridyl)amino)-4,6- bis(pentafluorophenoxy)-(1,3,5)triazine (L1F) with iron(ii) thiocyanate produced two spin-crossover coordination compounds with distinct cooperative behaviours. trans-[Fe(L1)2(NCS)2] ·2CH2Cl2 (1) displays a very gradual transition centred at T = 233 K, characterized by a ΔT80 (namely the temperature range within which 80% of the transition considered occurs) of 90 K, while that of fluorinated trans-[Fe(L1F)2(NCS) 2]·2CH3CN (3) is significantly more abrupt (and centred at T = 238 K), with a ΔT80 of 50 K, resulting from supramolecular contacts induced by the fluorinated phenol groups. The coordination compound equivalent to 1 with selenocyanate anions, namely trans-[Fe(L1)2(NCSe)2]·4CH2Cl 2·4CH3OH (2), also exhibits SCO properties centred at T = 238 K, but the transition is very gradual (ΔT80 = 150 K). Light-induced excited spin-state trapping (LIESST) is effective although incomplete for 2 and 3, while it is complete with a TLIESST of 58 K for 1. © The Royal Society of Chemistry 2013.
URIhttp://hdl.handle.net/10261/117646
DOI10.1039/C3DT50326G
Identificadoresdoi: 10.1039/C3DT50326G
issn: 1477-9226
e-issn: 1477-9234
Aparece en las colecciones: (ICMA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 

Artículos relacionados:


NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.