Hydrated double carbonates - A Raman and infrared spectroscopic study

被引:34
作者
Frost, Ray L. [1 ]
Dickfos, Marilla [1 ]
机构
[1] Queensland Univ Technol, Sch Phys & Chem Sci, Inorgan Mat Res Program, Brisbane, Qld 4001, Australia
基金
澳大利亚研究理事会;
关键词
hydrated carbonates; smithsonite; pirssonite; gaylussite; tunisite; shortite; infrared and Raman spectroscopy; MOLECULAR-STRUCTURE; CRYSTAL-STRUCTURE; PHOSPHATE; MINERALS;
D O I
10.1016/j.poly.2007.06.003
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The Raman spectra of selected double carbonates including pirssonite, gaylussite, shortite and quintinite complemented with infrared spectra have been used to cliaracterise the structure of these carbonate minerals. By using a Libowitzky type function hydrogen bond distances for these minerals of 2.669-2.766 angstrom are estimated. The variation in the hydrogen bond distances contributed to the stability of the mineral. The Raman spectrum of pirssonite shows a single band at 1080 cm(-1) attributed to the (CO3)(2-) symmetric stretching mode, in contrast to shortite and quintinite where two bands are observed. Multiple bands are observed for the antisymmetric stretching and bending region for these minerals proving that the carbonate unit is distorted in the structure of pirssonite and gaylussite. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:4503 / 4508
页数:6
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