Abstract
Raman spectra of coquandite Sb 6O 8(SO 4)·(H 2O) were studied, and related to the structure of the mineral. Raman bands observed at 970, 990 and 1007 cm −1 and a series of overlapping bands are observed at 1072, 1100, 1151 and 1217 cm −1 are assigned to the SO 4 2− ν 1 symmetric and ν 3 antisymmetric stretching modes respectively. Raman bands at 629, 638, 690, 751 and 787 cm −1 are attributed to the SbO stretching vibrations. Raman bands at 600 and 610 cm −1 and at 429 and 459 cm −1 are assigned to the SO 4 2− ν 4 and ν 2 bending modes. Raman bands at 359 and 375 cm −1 are assigned to O–Sb–O bending modes. Multiple Raman bands for both SO 4 2− and SbO stretching vibrations support the concept of the non-equivalence of these units in the coquandite structure.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
