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A vibrational spectroscopic study of planchéite Cu8Si8O22(OH)4•H2O

Frost, Ray L. & Xi, Yunfei (2012) A vibrational spectroscopic study of planchéite Cu8Si8O22(OH)4•H2O. Spectrochimica Acta Part A : Molecular and Biomolecular Spectroscopy, 91, pp. 314-318.

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Abstract

Planchéite Cu8Si8O22(OH)4•H2O is a hydrated copper hydroxy silicate. The objective of this work is to use Raman and infrared spectroscopy to determine the molecular structure of planchéite. Raman bands of planchéite at around 1048, 1081 and 1127 are described as the ν1 –SiO3 symmetric stretching vibrations; Raman bands at 828, 906 are attributed to the ν3 –SiO3 antisymmetric stretching vibrations. The Raman band at 699 cm-1 is assigned to the ν4 bending modes of the -SiO3 units. The intense Raman band at 3479 cm-1 is ascribed to the stretching vibration of the OH units. The Raman band at 3250 cm-1 is evidence for water in the structure. A comparison of the spectra of planchéite with that of shattuckite and chrysocolla.

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ID Code: 48988
Item Type: Journal Article
Keywords: planchéite, shattuckite, silicate, Raman spectroscopy, hydroxyl, healing mineral
DOI: 10.1016/j.saa.2012.01.051
ISSN: 1386-1425
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 2012 Elsevier
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, [VOL 91, (2012)] DOI: 10.1016/j.saa.2012.01.051
Deposited On: 07 Mar 2012 08:33
Last Modified: 11 Sep 2013 13:38

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