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Title: A vibrational spectroscopic study of the phosphate mineral churchite (REE)(PO4) 2H2O.
Authors: Frost, Ray Leslie
López, Andrés
Cipriano, Ricardo Augusto Scholz
Xi, Yunfei
Cândido Filho, Mauro
Keywords: Churchite
Rare earths
Molecular water
Hydrogen bond lengths
Raman spectroscopy
Issue Date: 2014
Citation: FROST, R. L. et al. A vibrational spectroscopic study of the phosphate mineral churchite (REE)(PO4) 2H2O. Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy, v. 127, p. 429-433, 2014. Disponível em: <>. Acesso em: 07 out. 2014.
Abstract: Vibrational spectroscopy has been used to study the rare earth mineral churchite of formula (REE)(PO4)- _2H2O. The mineral contains a range of rare earth metals including yttrium depending on the locality. The Raman spectra of churchite-(REE) are characterized by an intense sharp band at 984 cm_1 assigned to the m1 ðPO3_ 4 Þ symmetric stretching mode. A lower intensity band observed at around 1067 cm_1 is attributed to the m3 ðPO3_ 4 Þ antisymmetric stretching mode. The ðPO3_ 4 Þ bending modes are observed at 497 cm_1 (m2) and 565 cm_1(m4). Raman bands at 649 and 681 cm_1 are assigned to water librational modes. Vibrational spectroscopy enables aspects of the structure of churchite to be ascertained.
ISSN: 1386-1425
metadata.dc.rights.license: O periódico Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença 3487791205636.
Appears in Collections:DEGEO - Artigos publicados em periódicos

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