Structural insights into the two-step spin-crossover compound Fe(3, 4-dimethyl-pyridine)2[Ag(CN)2]2

The crystal structure of the polymeric spin crossover compound Fe(3, 4-dimethyl-pyridine)2[Ag(CN)2]2 has been solved and its temperature dependence followed by means of single-crystal and powder X-ray diffraction. This compound presents a two-step spin transition with relatively abrupt steps centred...

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Detalles Bibliográficos
Autores: Rodríguez-Velamazán, José Alberto, Kitase, Kosuke, Palacios, Elías, Castro, Miguel, Fernández-Blanco, Ángel, Burriel, Ramón, Kitazawa, Takafumi
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:España
Institución:Universidad de Zaragoza
Repositorio:Zaguán. Repositorio Digital de la Universidad de Zaragoza
OAI Identifier:oai:zaguan.unizar.es:86387
Acceso en línea:http://zaguan.unizar.es/record/86387
Access Level:acceso abierto
Descripción
Sumario:The crystal structure of the polymeric spin crossover compound Fe(3, 4-dimethyl-pyridine)2[Ag(CN)2]2 has been solved and its temperature dependence followed by means of single-crystal and powder X-ray diffraction. This compound presents a two-step spin transition with relatively abrupt steps centred at ca. 170 K and 145 K and a plateau at around 155 K. The origin of the two-step transition is discussed in light of these structural studies. The observations are compatible with a mostly disordered state between the two steps, consisting of mixing of high-spin and low-spin species, while weak substructure reflections in the mixed phase could indicate some degree of long-range order of the high-spin and low-spin sites.

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