A vibrational spectroscopic study of the phosphate mineral churchite (REE)(PO4)⋅2H2O

Frost, Ray L., López, Andrés, Scholz, Ricardo, Xi, Yunfei, & Filho, Mauro Cândido (2014) A vibrational spectroscopic study of the phosphate mineral churchite (REE)(PO4)⋅2H2O. Spectrochimica Acta Part A : Molecular and Biomolecular Spectroscopy, 127, pp. 429-433.

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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 v1 (PO¾-) symmetric stretching mode. A lower intensity band observed at around 1067 cm-1 is attributed to the v3 (PO¾-) antisymmetric stretching mode. The (PO¾-) bending modes are observed at 497 cm-1 (v2) and 565 cm-1(v4). 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.

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ID Code: 69760
Item Type: Journal Article
Refereed: Yes
Additional URLs:
Keywords: Churchite-(REE), Phosphate, Rare earths, Molecular water, Hydrogen bond lengths, Raman spectroscopy
DOI: 10.1016/j.saa.2014.02.100
ISSN: 1873-3557
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > PHYSICAL CHEMISTRY (INCL. STRUCTURAL) (030600) > Structural Chemistry and Spectroscopy (030606)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 Elsevier B.V. All rights reserved.
Copyright Statement: This is the author’s version of a work that was accepted for publication in Spectrochimica Acta Part A : Molecular and Biomolecular Spectroscopy. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Spectrochimica Acta Part A : Molecular and Biomolecular Spectroscopy, [127, (5 June 2014] http://dx.doi.org/10.1016/j.saa.2014.02.100
Deposited On: 03 Apr 2014 02:29
Last Modified: 10 Jun 2016 14:41

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