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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 Phosphate 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: <http://www.sciencedirect.com/science/article/pii/S138614251400287X>. 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. |
URI: | http://www.repositorio.ufop.br/handle/123456789/4195 |
metadata.dc.identifier.doi: | https://doi.org/10.1016/j.saa.2014.02.100 |
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 |
Files in This Item:
File | Description | Size | Format | |
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ARTIGO_VibrationalSpectroscopicChurchite.pdf | 1,15 MB | Adobe PDF | View/Open |
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