Spectroscopic,magnetic and X-ray powder diffraction studies on U(III) and Np(III) formates |
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| Affiliation: | 1. Division of Chemistry, Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Japan;2. Tsukuba Research Center for Energy Materials Sciences (TREMS), University of Tsukuba, Tsukuba, Japan;3. Department of Chemistry, Faculty of Science, Fukuoka University, Fukuoka, Japan;1. Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland;2. Faculdade de Física, Universidade Federal do Pará, 66075-110 Belém, PA, Brazil |
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| Abstract: | ![]()
The synthesis of the new Np(III) compound Np(HCOO)3 is reported and its lattice data, spectroscopic and magnetochemical properties are compared with the refined properties of U(HCOO)3. Both compounds are isotypic and crystallize in the rhombohedral lattice of Gd(III) formate. The electronic reflectance and IR spectra have been measured and discussed. Low temperature magnetic susceptibilities indicate an antiferromagnetic transition for U(HCOO)3 at TN = 12 K. The magnetic moments of 3.70 B.M. (140–300 K) for U(HCOO)3 and 2.69 B.M. (80–300 K) for Np(HCOO)3 closely approach the corresponding free ion values. |
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