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Raman spectroscopic study of the selenite minerals—chalcomenite CuSeO 3 ·2H 2 O, clinochalcomenite and cobaltomenite
Author(s) -
Frost Ray L.,
Keeffe Eloise C.
Publication year - 2008
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.2036
Subject(s) - raman spectroscopy , selenium , chemistry , hydrogen bond , analytical chemistry (journal) , spectroscopy , crystallography , mineralogy , molecule , physics , optics , organic chemistry , quantum mechanics , chromatography
Raman spectroscopy has been used to study the dimorphous selenite minerals chalcomenite, cobaltomenite and clinochalcomenite. Selenite minerals are characterised by the position of the symmetric stretching mode that is observed at higher wavenumbers than the anti‐symmetric stretching mode. The selenite ion has C 3v symmetry and four modes, 2 A 1 and 2 E . These modes are observed at 813, 472 cm −1 ( A 1 ) and 685, 710, 727 and 367 and 396 cm −1 ( E ). Bands assigned to the water stretching vibrations are observed for chalcomenite at 2953, 3184 and 3506 cm −1 and for clinochalcomenite at 2909, 3193 and 3507 cm −1 . A comparison of the Raman spectra of chalcomenite, clinochalcomenite and cobaltomenite is made. The position of these bands enabled hydrogen bond distances in the selenite structure to be estimated. Hydrogen bond distances for chalcomenite and clinochalmenite were determined to be similar. Copyright © 2008 John Wiley & Sons, Ltd.