Molecular structure of the uranyl mineral uranopilite-a Raman spectroscopic study

Frost, Ray L., Carmody, Onuma, Erickson, Kristy L., Weier, Matt L., Henry, Dermot O., & Cejka, Jiri (2005) Molecular structure of the uranyl mineral uranopilite-a Raman spectroscopic study. Journal of Molecular Structure, 733(1-3), pp. 203-210.


View at publisher


Raman spectroscopy of the mineral uranopilite at 298 and 77 K has been obtained and used to elucidate the structure of the mineral at the molecular level. A single intense band at 1010 cm-1 is assigned to the ν1 (SO4)2- symmetric stretching mode. Three low intensity bands in the 298 K Raman spectrum are observed at 1143, 1117 and 1097 cm-1and in the 77 K spectrum four bands at 1148, 1130, 1118 and 1106 cm-1. These bands are attributed to the ν3 antisymmetric stretching modes. A series of infrared bands are found at 1559, 1540, 1526 and 1511 cm-1 attributed to δ UOH bending modes. Three bands are observed at 843, 835 and 819 cm-1 in both 298 and 77 K spectra attributed to the ν1 symmetric stretching modes of the (UO2)2+ units. In the infrared spectra bands are observed at 941, 929 and 910 cm-1 and are assigned to the ν3 antisymmetric stretching modes of the UO2 units. These values are used to calculate UO bond distances. Multiple OH stretching modes prove a complex arrangement of OH groupings i.e. water molecules and OH- ions, and hydrogen bonding in the crystal structure of uranopilite.

Impact and interest:

48 citations in Scopus
5 citations in Web of Science®
Search Google Scholar™

Citation counts are sourced monthly from Scopus and Web of Science® citation databases.

These databases contain citations from different subsets of available publications and different time periods and thus the citation count from each is usually different. Some works are not in either database and no count is displayed. Scopus includes citations from articles published in 1996 onwards, and Web of Science® generally from 1980 onwards.

Citations counts from the Google Scholar™ indexing service can be viewed at the linked Google Scholar™ search.

Full-text downloads:

305 since deposited on 25 Oct 2005
6 in the past twelve months

Full-text downloads displays the total number of times this work’s files (e.g., a PDF) have been downloaded from QUT ePrints as well as the number of downloads in the previous 365 days. The count includes downloads for all files if a work has more than one.

ID Code: 819
Item Type: Journal Article
Refereed: Yes
Additional Information:

Co-author Dermott Henry is affiliated with Museum Victoria, Geosciences ,Melbourne.

Co-author Jiri Cejka is affiliated with National Museum, Czech Republic.

Keywords: uranopilite, johannite, zippeite, uranyl sulphate minerals, dehydroxylation, dehydration, infrared and Raman spectroscopy
DOI: 10.1016/j.molstruc.2004.08.014
ISSN: 0022-2860
Subjects: Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > INORGANIC CHEMISTRY (030200)
Divisions: Past > QUT Faculties & Divisions > Faculty of Science and Technology
Copyright Owner: Copyright 2004 Elsevier
Copyright Statement: Reproduced in accordance with the copyright policy of the publisher: This journal is available online.
Deposited On: 25 Oct 2005 00:00
Last Modified: 29 Feb 2012 13:13

Export: EndNote | Dublin Core | BibTeX

Repository Staff Only: item control page