Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.3390/molecules25061330

Аннотация: The oxidation process of samariumoxysulfide was studied in the temperature range of 500-1000 ◦C. Our DTA investigation allowed for establishing the main thermodynamic (∆Ho exp = −654.6 kJ/mol) and kinetic characteristics of the process (Ea = 244 kJ/mol, A = 2 × 1010). The enthalpy value of samarium oxysulfate (∆Ho f (Sm2O2SO4(monocПоказать полностьюl)) = −2294.0 kJ/mol) formation was calculated. The calculated process enthalpy value coincides with the value determined in the experiment. It was established that samarium oxysulfate crystallizes in the monoclinic symmetry class and its crystal structure belongs to space group C2/c with unit cell parameters a = 13.7442 (2), b = 4.20178 (4) and c = 8.16711 (8)Å, β = 107.224 (1)◦, V = 450.498 (9)Å3, Z = 4. The main elements of the crystalline structure are obtained and the cation coordination environment is analyzed in detail. Vibrational spectroscopy methods confirmed the structural model adequacy. The Sm2O2SO4luminescence spectra exhibit three main bands easily assignable to the transitions from 4G5/2 state to 6H5/2, 6H7/2, and 6H9/2 multiplets. © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

Журнал: Molecules

Выпуск журнала: Vol. 25, Is. 6

Номера страниц: 25061330

ISSN журнала: 14203049

Издатель: MDPI AG

• Denisenko Yu.G. (Department of General and Special Chemistry, Industrial University of Tyumen, Tyumen, 625000, Russian Federation Compounds, Institute of Solid State Chemistry, UB RAS, Ekaterinburg, 620137, Russian Federation)
• Sal'nikova E.I. (Institute of Chemistry, Tyumen State University, Tyumen, 625003, Russian Federation, Department of General Chemistry, Northen Trans-Ural Agricultural University, Tyumen, 625003, Russian Federation)
• Basova S.A. (Institute of Chemistry, Tyumen State University, Tyumen, 625003, Russian Federation)
• Molokeev M.S. (Laboratory of Crystal Physics, Kirensky Institute of Physics, Federal Research Center, KSC, SB RAS, Krasnoyarsk, 660036, Russian Federation, School of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation, Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation)
• Krylov A.S. (Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics Federal Research Center, KSC, SB RAS, Krasnoyarsk, 660036, Russian Federation)
• Aleksandrovsky A.S. (Laboratory of Coherent Optics, Kirensky Institute of Physics, Federal Research Center, KSC, SB RAS, Krasnoyarsk, 660036, Russian Federation, Institute of Nanotechnology, Spectroscopy and Quantum Chemistry, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation)
• Oreshonkov A.S. (Laboratory of Molecular Spectroscopy, Kirensky Institute of Physics Federal Research Center, KSC, SB RAS, Krasnoyarsk, 660036, Russian Federation, School of Engineering and Construction, Siberian Federal University, Krasnoyarsk, 660041, Russian Federation)
• Atuchin V.V. (Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, Novosibirsk, 630090, Russian Federation, Laboratory of Semiconductor and Dielectric Materials, Novosibirsk State University, Novosibirsk, 630090, Russian Federation, Research and Development Department, Kemerovo State University, Kemerovo, 650000, Russian Federation)
• Volkova S.S. (Research Resource Center, “Natural Resource Management and Physico-Chemical Research”, Tyumen State University, Tyumen, 625003, Russian Federation)
• Khritokhin N.A. (Institute of Chemistry, Tyumen State University, Tyumen, 625003, Russian Federation)
• Andreev O.V. (Institute of Chemistry, Tyumen State University, Tyumen, 625003, Russian Federation, Laboratory of the Chemistry of Rare Earth Compounds, Institute of Solid State Chemistry, UB RAS, Ekaterinburg, 620137, Russian Federation)

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