Crystal structure refinement, spectroscopic study and magnetic properties of yttrium hexacyanoferrate (III)

• Published in: Journal of molecular structure Vol. 1003; no. 1; pp. 129 - 133
• Main Authors: Gil, Diego M., Navarro, M.C., Lagarrigue, M.C., Guimpel, Julio, Carbonio, Raúl E., Gómez, M. Inés
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 28-09-2011
• Subjects: Arrays; Banded structure; Bands; Construction; Crystal structure; cyanides; Hexacyanoferrate (III); Infrared spectroscopy; iron; magnetic properties; Powder X-ray diffraction; Rietveld analysis; scanning electron microscopy; Spectroscopy; Stretching; temperature; Thermal analysis; Thermal decomposition; thermal degradation; thermogravimetry; X-radiation; yttrium; Infrared spectroscopy; Thermal analysis; Hexacyanoferrate (III); Rietveld analysis; Powder X-ray diffraction
• ISSN: 0022-2860; 1872-8014
• DOI: 10.1016/j.molstruc.2011.07.051

► The crystal structure of Y[Fe(CN)
6]·4H
2O was investigated by DRXP and IR spectroscopy. ► The thermal decomposition produces the mixed oxide YFeO
3 with perovskite-type structure. ► The magnetic measurements reveal that Y[Fe(CN)
6]·4H
2O shows anti-ferromagnetic interactions at low temperatures.
Y[Fe(CN)
6]·4H
2O has been synthesized and characterized. The crystal structure was refined by Rietveld analysis using X-ray powder diffraction data. Y[Fe(CN)
6]·4H
2O crystallizes in the orthorhombic crystal system, space group
Cmcm. Y
3+ ion is eight-coordinated forming a bicapped distorted trigonal prism YN
6O
2. Fe
3+ ion is six-coordinated in the form of an irregular octahedra FeC
6 group and cyanide linkages between YN
6O
2 and FeC
6 groups build an infinite polymeric array. The vibrational spectrum shows two bands corresponding to antisymmetric and symmetric stretching
12C
14N in the CN stretching region. These bands are accompanied by four weak isotopic bands at lower frequency due to the presence of
13C and
15N in relative natural abundance. The HOH bending band split into three bands around 1600
cm
−1 due to the presence of two kinds of water molecules in the structure. The thermal decomposition has been followed by thermogravimetric and differential thermal analysis, IR spectroscopy and powder XRD. The size and morphology of the complex and its thermal decomposition products were evaluated by scanning electron microscopy. The magnetic measurements confirm that Y[Fe(CN)
6]·4H
2O shows an antiferromagnetic order at low temperatures.