Please use this identifier to cite or link to this item: http://www.repositorio.ufop.br/handle/123456789/3880
Title: Vibrational spectroscopic characterization of the sulphate mineral leightonite K2Ca2Cu(SO4)4 2H2O : implications for the molecular structure.
Authors: Frost, Ray Leslie
López, Andrés
Xi, Yunfei
Cipriano, Ricardo Augusto Scholz
Graça, Leonardo Martins
Lagoeiro, Leonardo Evangelista
Keywords: Leightonite
Sulphate
Molecular structure
Raman spectroscopy
Infrared spectroscopy
Issue Date: 2013
Citation: FROST, RAY L. et al. Vibrational spectroscopic characterization of the sulphate mineral leightonite K2Ca2Cu(SO4)4 2H2O : implications for the molecular structure. Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy, v. 112, p. 90-94, 2013. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1386142513003545>. Acesso em: 30 set. 2014.
Abstract: The mineral leightonite, a rare sulphate mineral of formula K2Ca2Cu(SO4)4.2H2O, has been studied using a combination of electron probe and vibrational spectroscopy. The mineral is characterized by an intense Raman band at 991 cm^-1 attributed to the SO4^-2 m1 symmetric stretching mode. A series of Raman bands at 1047, 1120, 1137, 1163 and 1177 cm^-1 assigned to the SO4^-2 m3 antisymmetric stretching modes. The observation of multiple bands shows that the symmetry of the sulphate anion is reduced. Multiple Raman and infrared bands in the OH stretching region shows that water in the structure of leightonite is in a range of molecular environments.
URI: http://www.repositorio.ufop.br/handle/123456789/3880
metadata.dc.identifier.doi: https://doi.org/10.1016/j.saa.2013.04.030
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: 3481460482865.
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