INVESTIGADORES
MARTINEZ GARCIA Ricardo
artículos
Título:
Mixed Valence States in Cobalt Iron Cyanides.
Autor/es:
RICARDO MARTÍNEZ GARCÍA; M. KNOBEL; E. REGUERA RUIZ; J. BALMASEDA; H. YEE MADEIRA
Revista:
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Editorial:
PERGAMON-ELSEVIER SCIENCE LTD
Referencias:
Año: 2007 vol. 68 p. 290 - 298
ISSN:
0022-3697
Resumen:
Cobalt iron cyanide with both Co and Fe in mixed valence states were prepared and characterized. In this mixed valence system the cobalt atom is found both as high spin Co(2+) and low spin Co(III) while iron always appears in low spin state to form two solid solutions: Co(2+)Co(III) hexacyanoferrates (II,III), and Co(2+)Co(III) hexacyanoferrate (II). Such solid solutions have the following formula units: (Co2+)x(CoIII)1-xK[(FeII)1-x(FeIII)x(CN)6]·1/2H2O and (Co2+)1.5x(CoIII)1-xK[FeII(CN)6]·yH2O (0
