Assessment of the molecular structure of the borate mineral boracite Mg3B7O13Cl using vibrational spectroscopy
Data(s) |
13/08/2012
|
---|---|
Resumo |
Boracite is a magnesium borate mineral with formula: Mg3B7O13Cl and occurs as blue green, colorless, gray, yellow to white crystals in the orthorhombic – pyramidal crystal system. An intense Raman band at 1009 cm−1 was assigned to the BO stretching vibration of the B7O13 units. Raman bands at 1121, 1136, 1143 cm−1 are attributed to the in-plane bending vibrations of trigonal boron. Four sharp Raman bands observed at 415, 494, 621 and 671 cm−1 are simply defined as trigonal and tetrahedral borate bending modes. The Raman spectrum clearly shows intense Raman bands at 3405 and 3494 cm−1, thus indicating that some Cl anions have been replaced with OH units. The molecular structure of a natural boracite has been assessed by using vibrational spectroscopy. |
Formato |
application/pdf |
Identificador | |
Publicador |
Elseriver |
Relação |
http://eprints.qut.edu.au/58072/5/58072.pdf DOI:10.1016/j.saa.2012.07.115 Frost, Ray L., Xi, Yunfei, & Scholz, Ricardo (2012) Assessment of the molecular structure of the borate mineral boracite Mg3B7O13Cl using vibrational spectroscopy. Spectrochimica Acta Part A : Molecular and Biomolecular Spectroscopy, 96(-), pp. 946-951. |
Direitos |
Copyright 2012 Elsevier B.V. All rights reserved. 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 96, ISSUE -, (2012)] DOI: 10.1016/j.saa.2012.07.115. |
Fonte |
School of Chemistry, Physics & Mechanical Engineering; Science & Engineering Faculty |
Palavras-Chave | #030606 Structural Chemistry and Spectroscopy #Raman spectroscopy #Borate #Boracite #Infrared #Evaporite |
Tipo |
Journal Article |