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Hydrothermal synthesis, structure, and magnetic properties of Pu(SeO3)2 |
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| Authors: | Travis H Bray L Soderholm Richard G Haire |
| Institution: | a Department of Chemistry and Biochemistry and Center for Actinide Science, Auburn University, Auburn, AL 36849, USA b Chemistry Division, Argonne National Laboratory, Argonne, IL 60439, USA c Department of Chemistry, University of South Alabama, Mobile, AL 36688, USA d Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA |
| Abstract: | The reaction between PuO2 and SeO2 under mild hydrothermal conditions results in the formation of Pu(SeO3)2 as brick-red prisms. This compound adopts the Ce(SeO3)2 structure type, and consists of one-dimensional chains of edge-sharing PuO8] distorted bicapped trigonal prisms linked by SeO3] units into a three-dimensional network. Crystallographic data: Pu(SeO3)2, monoclinic, space group P21/n, a=6.960(1) Å, b=10.547(2) Å, c=7.245(1) Å, β=106.880(9)°, V=508.98(17) Å3, Z=4 (T=193 K), R(F)=2.92% for 83 parameters with 1140 reflections with I>2σ(I). Magnetic susceptibility data for Pu(SeO3)2 are linear from 35 to 320 K and yield an effective moment of 2.71(5) μB and a Weiss constant of −500(5) K. |
| Keywords: | Plutonium selenite Plutonium magnetism Plutonium crystal structure |
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