Journal
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Volume 149, Issue -, Pages 295-303Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.saa.2015.04.037
Keywords
Thorium(IV) sulfate fluoride; Crystal structure; In situ ligand decomposition; Temperature dependent spectrum
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Funding
- National Science Foundation of China [21173143, 91326112, 21422704, 21471107, 21201106]
- Science Foundation of Jiangsu Province [BK20140007, BK20140303]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Young Thousand Talented Program in China
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Under hydrothermal condition, the decomposition of methanesulfonic acid to sulfate anion is observed, resulting in the formation of a novel thorium sulfate fluoride compound ThF2(SO4)(H2O) (1). This complex is structurally characterized by single crystal X-ray diffraction, revealing a three-dimensional structure crystallized in the monoclinic space-group P2(1)/n, where thorium cation is nine coordinated by four SO42- oxygen atoms, four bridging F-, and one H2O molecule. The crystal lattice parameters are a = 6.9065(7) angstrom, b = 6.9256(7) angstrom, c = 10.5892(11) angstrom, beta = 96.755(2)degrees, V 502.98(9) angstrom(3), Z = 4. The temperature dependent UV-Vis-NIR absorption spectra and fluorescence spectra were collected from 77 K to 300 K, where the intensities of the peaks varied as a function of temperature. The Raman vibrational spectrum of the samples collected from 100 to 2000 cm(-1) shows identical SO42- vibration modes. (C) 2015 Elsevier B.V. All rights reserved.
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