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Title: Synthesis and crystal structures of the layered uranyl tellurites A{sub 2}[(UO{sub 2}){sub 3}(TeO{sub 3}){sub 2}O{sub 2}] (A=K, Rb, Cs)

Abstract

The reactions of UO{sub 3} and TeO{sub 3} with KCl, RbCl, or CsCl at 800{sup o}C for 5d yield single crystals of A{sub 2}[(UO{sub 2}){sub 3}(TeO{sub 3}){sub 2}O{sub 2}] (A=K (1), Rb (2), and Cs (3)). These compounds are isostructural with one another, and their structures consist of two-dimensional {sub {infinity}}{sup 2}[(UO2)3(TeO3)2O2]2- sheets arranged in a stair-like topology separated by alkali metal cations. These sheets are comprised of zigzagging uranium(VI) oxide chains bridged by corner-sharing trigonal pyramidal TeO{sub 3}{sup 2-} anions. The chains are composed of dimeric, edge-sharing, pentagonal bipyramidal UO{sub 7} moieties joined by edge-sharing tetragonal bipyramidal UO{sub 6} units. The lone-pair of electrons from the TeO{sub 3} groups are oriented in opposite directions with respect to one another on each side of the sheets rendering each individual sheet non-polar. The alkali metal cations form contacts with nearby tellurite oxygen atoms as well as with oxygen atoms from the uranyl moieties. Crystallographic data (193K, MoK{alpha}, {lambda}=0.7107A): 1, triclinic, space group P1-bar , a=6.7985(5)A, b=7.0123(5)A, c=7.8965(6)A, {alpha}=101.852(1){sup o}, {beta}=102.974(1){sup o}, {gamma}=100.081(1){sup o}, V=349.25(4)A3, Z=2, R(F)=2.70% for 98 parameters and 1697 reflections with I>2{sigma}(I); 2, triclinic, space group P1-bar , a=7.0101(6)A, b=7.0742(6)A, c=8.0848(7)A, {alpha}=105.590(2){sup o}, {beta}=101.760(2){sup o}, {gamma}=99.456(2){sup o}, V=367.91(5)A3, Z=2,more » R(F)=2.36% for 98 parameters and 1817 reflections with I>2{sigma}(I); 3, triclinic, space group P1-bar , a=7.0007(5)A, b=7.5195(6)A, c=8.4327(6)A, {alpha}=109.301(1){sup o}, {beta}=100.573(1){sup o}, {gamma}=99.504(1){sup o}, V=399.49(5)A3, Z=2, R(F)=2.61% for 98 parameters and 1965 reflections with I>2{sigma}(I)« less

Authors:
 [1];  [1];  [1]
  1. Department of Chemistry, Auburn University, 179 Chemistry Building, AL 36849 (United States)
Publication Date:
OSTI Identifier:
20658175
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 177; Journal Issue: 11; Other Information: DOI: 10.1016/j.jssc.2004.06.054; PII: S0022-4596(04)00371-8; Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ALKALI METALS; CESIUM CHLORIDES; CESIUM COMPOUNDS; CRYSTAL GROWTH; CRYSTALLOGRAPHY; MONOCRYSTALS; POTASSIUM CHLORIDES; POTASSIUM COMPOUNDS; REFLECTION; RUBIDIUM CHLORIDES; RUBIDIUM COMPOUNDS; SPACE GROUPS; TELLURIUM COMPOUNDS; TRICLINIC LATTICES; URANIUM TRIOXIDE; URANYL COMPOUNDS

Citation Formats

Woodward, Jonathan D, Almond, Philip M, and Albrecht-Schmitt, Thomas E. Synthesis and crystal structures of the layered uranyl tellurites A{sub 2}[(UO{sub 2}){sub 3}(TeO{sub 3}){sub 2}O{sub 2}] (A=K, Rb, Cs). United States: N. p., 2004. Web. doi:10.1016/j.jssc.2004.06.054.
Woodward, Jonathan D, Almond, Philip M, & Albrecht-Schmitt, Thomas E. Synthesis and crystal structures of the layered uranyl tellurites A{sub 2}[(UO{sub 2}){sub 3}(TeO{sub 3}){sub 2}O{sub 2}] (A=K, Rb, Cs). United States. https://doi.org/10.1016/j.jssc.2004.06.054
Woodward, Jonathan D, Almond, Philip M, and Albrecht-Schmitt, Thomas E. 2004. "Synthesis and crystal structures of the layered uranyl tellurites A{sub 2}[(UO{sub 2}){sub 3}(TeO{sub 3}){sub 2}O{sub 2}] (A=K, Rb, Cs)". United States. https://doi.org/10.1016/j.jssc.2004.06.054.
@article{osti_20658175,
title = {Synthesis and crystal structures of the layered uranyl tellurites A{sub 2}[(UO{sub 2}){sub 3}(TeO{sub 3}){sub 2}O{sub 2}] (A=K, Rb, Cs)},
author = {Woodward, Jonathan D and Almond, Philip M and Albrecht-Schmitt, Thomas E},
abstractNote = {The reactions of UO{sub 3} and TeO{sub 3} with KCl, RbCl, or CsCl at 800{sup o}C for 5d yield single crystals of A{sub 2}[(UO{sub 2}){sub 3}(TeO{sub 3}){sub 2}O{sub 2}] (A=K (1), Rb (2), and Cs (3)). These compounds are isostructural with one another, and their structures consist of two-dimensional {sub {infinity}}{sup 2}[(UO2)3(TeO3)2O2]2- sheets arranged in a stair-like topology separated by alkali metal cations. These sheets are comprised of zigzagging uranium(VI) oxide chains bridged by corner-sharing trigonal pyramidal TeO{sub 3}{sup 2-} anions. The chains are composed of dimeric, edge-sharing, pentagonal bipyramidal UO{sub 7} moieties joined by edge-sharing tetragonal bipyramidal UO{sub 6} units. The lone-pair of electrons from the TeO{sub 3} groups are oriented in opposite directions with respect to one another on each side of the sheets rendering each individual sheet non-polar. The alkali metal cations form contacts with nearby tellurite oxygen atoms as well as with oxygen atoms from the uranyl moieties. Crystallographic data (193K, MoK{alpha}, {lambda}=0.7107A): 1, triclinic, space group P1-bar , a=6.7985(5)A, b=7.0123(5)A, c=7.8965(6)A, {alpha}=101.852(1){sup o}, {beta}=102.974(1){sup o}, {gamma}=100.081(1){sup o}, V=349.25(4)A3, Z=2, R(F)=2.70% for 98 parameters and 1697 reflections with I>2{sigma}(I); 2, triclinic, space group P1-bar , a=7.0101(6)A, b=7.0742(6)A, c=8.0848(7)A, {alpha}=105.590(2){sup o}, {beta}=101.760(2){sup o}, {gamma}=99.456(2){sup o}, V=367.91(5)A3, Z=2, R(F)=2.36% for 98 parameters and 1817 reflections with I>2{sigma}(I); 3, triclinic, space group P1-bar , a=7.0007(5)A, b=7.5195(6)A, c=8.4327(6)A, {alpha}=109.301(1){sup o}, {beta}=100.573(1){sup o}, {gamma}=99.504(1){sup o}, V=399.49(5)A3, Z=2, R(F)=2.61% for 98 parameters and 1965 reflections with I>2{sigma}(I)},
doi = {10.1016/j.jssc.2004.06.054},
url = {https://www.osti.gov/biblio/20658175}, journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = 11,
volume = 177,
place = {United States},
year = {Mon Nov 01 00:00:00 EST 2004},
month = {Mon Nov 01 00:00:00 EST 2004}
}