The molecular structure of the phosphate mineral senegalite Al2(PO4)(OH)3-3H2O - a vibrational spectroscopic study.

Detalhes bibliográficos
Autor(a) principal: Frost, Ray Leslie
Data de Publicação: 2013
Outros Autores: López, Andrés, Xi, Yunfei, Murta, Natália, Cipriano, Ricardo Augusto Scholz
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFOP
Texto Completo: http://www.repositorio.ufop.br/handle/123456789/4194
https://doi.org/10.1016/j.molstruc.2013.05.061
Resumo: We have studied the mineral senagalite, a hydrated hydroxy phosphate of aluminium with formula Al2(-PO4)(OH)3_3H2O using a combination of electron microscopy and vibrational spectroscopy. Senegalite crystal aggregates shows tabular to prismatic habitus and orthorhombic form. The Raman spectrum is dominated by an intense band at 1029 cm_1 assigned to the PO3_ 4 m1 symmetric stretching mode. Intense Raman bands are found at 1071 and 1154 cm_1 with bands of lesser intensity at 1110, 1179 and 1206 cm_1 and are attributed to the PO3_ 4 m3 antisymmetric stretching vibrations. The infrared spectrum shows complexity with a series overlapping bands. A comparison is made with spectra of other aluminium containing phosphate minerals such as augelite and turquoise. Multiple bands are observed for the phosphate bending modes giving support for the reduction of symmetry of the phosphate anion. Vibrational spectroscopy offers a means for the assessment of the structure of senagalite.
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spelling The molecular structure of the phosphate mineral senegalite Al2(PO4)(OH)3-3H2O - a vibrational spectroscopic study.SenegalitePhosphatePegmatiteRaman spectroscopyInfrared spectroscopyWe have studied the mineral senagalite, a hydrated hydroxy phosphate of aluminium with formula Al2(-PO4)(OH)3_3H2O using a combination of electron microscopy and vibrational spectroscopy. Senegalite crystal aggregates shows tabular to prismatic habitus and orthorhombic form. The Raman spectrum is dominated by an intense band at 1029 cm_1 assigned to the PO3_ 4 m1 symmetric stretching mode. Intense Raman bands are found at 1071 and 1154 cm_1 with bands of lesser intensity at 1110, 1179 and 1206 cm_1 and are attributed to the PO3_ 4 m3 antisymmetric stretching vibrations. The infrared spectrum shows complexity with a series overlapping bands. A comparison is made with spectra of other aluminium containing phosphate minerals such as augelite and turquoise. Multiple bands are observed for the phosphate bending modes giving support for the reduction of symmetry of the phosphate anion. Vibrational spectroscopy offers a means for the assessment of the structure of senagalite.2014-12-17T13:30:55Z2014-12-17T13:30:55Z2013info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfFROST, R. L. et al. The molecular structure of the phosphate mineral senegalite Al2(PO4)(OH)3-3H2O - a vibrational spectroscopic study. Journal of Molecular Structure, v. 1048, p. 420-425, 2013. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0022286013005097>. Acesso em: 07 out. 2014.0022-2860http://www.repositorio.ufop.br/handle/123456789/4194https://doi.org/10.1016/j.molstruc.2013.05.061O periódico Journal of Molecular Structure concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3487800357317.info:eu-repo/semantics/openAccessFrost, Ray LeslieLópez, AndrésXi, YunfeiMurta, NatáliaCipriano, Ricardo Augusto Scholzengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOP2019-07-09T13:36:23Zoai:repositorio.ufop.br:123456789/4194Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-07-09T13:36:23Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false
dc.title.none.fl_str_mv The molecular structure of the phosphate mineral senegalite Al2(PO4)(OH)3-3H2O - a vibrational spectroscopic study.
title The molecular structure of the phosphate mineral senegalite Al2(PO4)(OH)3-3H2O - a vibrational spectroscopic study.
spellingShingle The molecular structure of the phosphate mineral senegalite Al2(PO4)(OH)3-3H2O - a vibrational spectroscopic study.
Frost, Ray Leslie
Senegalite
Phosphate
Pegmatite
Raman spectroscopy
Infrared spectroscopy
title_short The molecular structure of the phosphate mineral senegalite Al2(PO4)(OH)3-3H2O - a vibrational spectroscopic study.
title_full The molecular structure of the phosphate mineral senegalite Al2(PO4)(OH)3-3H2O - a vibrational spectroscopic study.
title_fullStr The molecular structure of the phosphate mineral senegalite Al2(PO4)(OH)3-3H2O - a vibrational spectroscopic study.
title_full_unstemmed The molecular structure of the phosphate mineral senegalite Al2(PO4)(OH)3-3H2O - a vibrational spectroscopic study.
title_sort The molecular structure of the phosphate mineral senegalite Al2(PO4)(OH)3-3H2O - a vibrational spectroscopic study.
author Frost, Ray Leslie
author_facet Frost, Ray Leslie
López, Andrés
Xi, Yunfei
Murta, Natália
Cipriano, Ricardo Augusto Scholz
author_role author
author2 López, Andrés
Xi, Yunfei
Murta, Natália
Cipriano, Ricardo Augusto Scholz
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Frost, Ray Leslie
López, Andrés
Xi, Yunfei
Murta, Natália
Cipriano, Ricardo Augusto Scholz
dc.subject.por.fl_str_mv Senegalite
Phosphate
Pegmatite
Raman spectroscopy
Infrared spectroscopy
topic Senegalite
Phosphate
Pegmatite
Raman spectroscopy
Infrared spectroscopy
description We have studied the mineral senagalite, a hydrated hydroxy phosphate of aluminium with formula Al2(-PO4)(OH)3_3H2O using a combination of electron microscopy and vibrational spectroscopy. Senegalite crystal aggregates shows tabular to prismatic habitus and orthorhombic form. The Raman spectrum is dominated by an intense band at 1029 cm_1 assigned to the PO3_ 4 m1 symmetric stretching mode. Intense Raman bands are found at 1071 and 1154 cm_1 with bands of lesser intensity at 1110, 1179 and 1206 cm_1 and are attributed to the PO3_ 4 m3 antisymmetric stretching vibrations. The infrared spectrum shows complexity with a series overlapping bands. A comparison is made with spectra of other aluminium containing phosphate minerals such as augelite and turquoise. Multiple bands are observed for the phosphate bending modes giving support for the reduction of symmetry of the phosphate anion. Vibrational spectroscopy offers a means for the assessment of the structure of senagalite.
publishDate 2013
dc.date.none.fl_str_mv 2013
2014-12-17T13:30:55Z
2014-12-17T13:30:55Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv FROST, R. L. et al. The molecular structure of the phosphate mineral senegalite Al2(PO4)(OH)3-3H2O - a vibrational spectroscopic study. Journal of Molecular Structure, v. 1048, p. 420-425, 2013. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0022286013005097>. Acesso em: 07 out. 2014.
0022-2860
http://www.repositorio.ufop.br/handle/123456789/4194
https://doi.org/10.1016/j.molstruc.2013.05.061
identifier_str_mv FROST, R. L. et al. The molecular structure of the phosphate mineral senegalite Al2(PO4)(OH)3-3H2O - a vibrational spectroscopic study. Journal of Molecular Structure, v. 1048, p. 420-425, 2013. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0022286013005097>. Acesso em: 07 out. 2014.
0022-2860
url http://www.repositorio.ufop.br/handle/123456789/4194
https://doi.org/10.1016/j.molstruc.2013.05.061
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFOP
instname:Universidade Federal de Ouro Preto (UFOP)
instacron:UFOP
instname_str Universidade Federal de Ouro Preto (UFOP)
instacron_str UFOP
institution UFOP
reponame_str Repositório Institucional da UFOP
collection Repositório Institucional da UFOP
repository.name.fl_str_mv Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)
repository.mail.fl_str_mv repositorio@ufop.edu.br
_version_ 1813002820852383744

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