Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
American Mineralogist Email Content Delivery
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
American Mineralogist; July 2004; v. 89; no. 7; p. 976-980
© 2004 Mineralogical Society of America
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in ISI Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via ISI Web of Science (5)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Almond, P. M.
Right arrow Articles by Albrecht-Schmitt, T. E.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

Hydrothermal synthesis and crystal chemistry of the new strontium uranyl selenites, Sr[(UO2)3(SeO3)2O2]•4H2O and Sr[UO2(SeO3)2]

Philip M. Almond and Thomas E. Albrecht-Schmitt*

Department of Chemistry, Auburn University, Auburn, Alabama 36849, U.S.A.

Correspondence: * E-mail: albreth{at}auburn.edu

The reaction of UO3 with SeO2 in the presence of SrCl2• 6H2O and Sr(OH)2• 8H2O in supercritical water at 425 °C for 3 d results in the formation of the new strontium uranyl selenites, Sr[(UO2)3(SeO3)2O2]•4H2O (1) and Sr[UO2(SeO3)2] (2). The single crystal X-ray structures of type 1 and type 2 were solved by direct methods and refined by full-matrix least-squares methods. Crystallographic data (193 K): (1), monoclinic, space group C2/m, a = 17.014(2), b = 7.0637(7), and c = 7.1084(7) Å, ß = 100.544(2)°, Z = 2, R(F) = 0.0361 for 79 parameters with 1132 reflections with I > 2{sigma}(I), wR2 = 0.0998 for all data; (2), triclinic, space group P, a = 5.6722(4), b = 6.7627(5), and c = 11.2622(8) Å, {alpha} = 104.698(1)°, ß = 93.708(1)°, {gamma} = 109.489(1)°, Z = 2, R(F) = 0.0373 for 110 parameters with 1902 reflections with I > 2{sigma}(I), wR2 = 0.0856 for all data. The structure of type 1 contains two-dimensionalsheets with the same topology as those found in guilleminite, Ba[(UO2)3(SeO3)2O2]•3H2O, and marthozite, Cu[(UO2)3(SeO3)2O2](H2O)8. Sr2+ cations and H2O groups occur between the layers. In contrast, the structure of type 2 contains one-dimensional ribbons with Sr2+ cations residing between them. This compound is isostructural with its Ca2+-containing analog.




This article has been cited by other articles:


Home page
 Can MineralHome page
P. C. Burns
U6+ MINERALS AND INORGANIC COMPOUNDS: INSIGHTS INTO AN EXPANDED STRUCTURAL HIERARCHY OF CRYSTAL STRUCTURES
Can Mineral, December 1, 2005; 43(6): 1839 - 1894.
[Abstract] [Full Text] [PDF]

Home page
 American MineralogistHome page
A. J. Locock, P. C. Burns, and T. M. Flynn
The role of water in the structures of synthetic hallimondite, Pb2[(UO2)(AsO4)2](H2O)n and synthetic parsonsite, Pb2[(UO2)(PO4)2](H2O)n, 0 <= n <= 0.5
American Mineralogist, January 1, 2005; 90(1): 240 - 246.
[Abstract] [Full Text] [PDF]


JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2008 by Mineralogical Society of America