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

Rodríguez-Velamazán, José Alberto ; Kitase, Kosuke ; Palacios, Elías (Universidad de Zaragoza) ; Castro, Miguel (Universidad de Zaragoza) ; Fernández-Blanco, Ángel ; Burriel, Ramón (Universidad de Zaragoza) ; Kitazawa, Takafumi

Resumen: 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.

Idioma: Inglés

DOI: 10.3390/cryst9060316

Año: 2019

Publicado en: Crystals 9, 6 (2019), 316 [8 pp.]
ISSN: 2073-4352

Factor impacto JCR: 2.404 (2019)

Categ. JCR: CRYSTALLOGRAPHY rank: 10 / 26 = 0.385 (2019) - Q2 - T2
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 165 / 314 = 0.525 (2019) - Q3 - T2

Factor impacto SCIMAGO: 0.594 - Chemical Engineering (miscellaneous) (Q2) - Materials Science (miscellaneous) (Q2) - Inorganic Chemistry (Q2) - Condensed Matter Physics (Q2)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E11-17R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/MAT2017-86019-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2015-68200-C2-2-P

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)
Área (Departamento): Área Cienc.Mater. Ingen.Metal. (Dpto. Ciencia Tecnol.Mater.Fl.)