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Structural Chemistry of Thorium Iodates

Published online by Cambridge University Press:  26 February 2011

Tyler A. Sullens ,
Philip M. Almond  and
Thomas E. Albrecht-Schmitt
Tyler A. Sullens
Affiliation:
[email protected]
Philip M. Almond
Affiliation:
[email protected]
Thomas E. Albrecht-Schmitt
Affiliation:
[email protected]
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Abstract

The hydrothermal reaction of Th(NO3)4·xH2O with I2O5 in the presence of KCl results in the crystallization of α-Th(IO3)4(H2O) and β-Th(IO3)4(H2O). The structure of αTh(IO3)4(H2O) is three-dimensional and contains Th4+ cations bound by iodate anions and a coordinating water, creating a tricapped trigonal prismatic environment around the thorium centers. βTh(IO3)4(H2O) is layered, and contains ThO9 units that are best described as capped square antiprisms. Crystallographic data: (193 K, MoKα, λ = 0.71073 Å): α-Th(IO3)4(H2O), monoclinic, space group P21/c, a = 7.2335(3) Å, b = 24.6046(12) Å, c = 7.0150(3) Å, b = 112.1888(8)°, V = 1156.05(9), Z = 4, R(F) = 1.97%; βTh(IO3)4(H2O), monoclinic, space group C2/c, a = 33.928(1) Å, b = 5.7466(2) Å, c = 12.4509(5) Å, b = 107.9896(7)°, V = 2308.8(1), Z = 8, R(F) = 1.63%.

Keywords

actinidecrystallographic structurecrystal growth
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 893: Symposium JJ – Actinides 2005 – Basic Science, Applications and Technology , 2005 , 0893-JJ08-01
Copyright
Copyright © Materials Research Society 2006

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References

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