Infrared spectra of Li2SeO4.H2O,Li2SO4.H2O and Li2(S,Se)O4.H2O |
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| Affiliation: | 1. Department of Chemistry, Allen University Columbia, Columbia, SC 29204, USA;2. Bragg Institute, Australian Science and Technology Organization, PMB 1, Menai, NSW 2234, Australia;3. Department of Chemistry & Biochemistry & NanoCenter, University of South Carolina, Columbia, SC 29208, USA;1. State Key Laboratory of Fine Chemicals, School of Chemistry, Dalian University of Technology, Dalian 116024, China;2. Department of Chemical Engineering, Qufu Normal University, Qufu, China;3. Center for Applied Energy Research, University of Kentucky, Lexington, KY 40511, USA;1. Department of Inorganic and Physical Chemistry, Lesya Ukrainka Eastern European National University, Voli Ave. 13, Lutsk, 43025, Ukraine;2. Frantsevych Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, 3 Krzhyzhanivsky St., 03142, Kyiv, Ukraine;3. Institute of Physics, J. Dlugosz University Częstochowa, Armii Krajowej 13/15, Częstochowa, Poland;4. Electrical Engineering Department, Czestochowa University Technology, Armii Krajowej 17, PL-42-217, Czestochowa, Poland;5. Wireless and Photonic Networks Research Centre, Faculty of Engineering, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia;6. Yuriy Fed’kovych Chernivtsi National University, 2 Kotziubynskoho Str., 58012, Chernivtsi, Ukraine;7. Department of Inorganic and Organic Chemistry, Lviv National University of Veterinary Medicine and Biotechnologies, Pekarska Street 50, 79010, Lviv, Ukraine;1. Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow, Russia;2. Bauman Moscow State Technical University, Moscow, Russia;1. Department of Nanoengineering, University of California San Diego, La Jolla, CA 92093, USA;2. Department of Nano-Bioengineering, Incheon National University, 119 Academy-ro, Incheon 22012, Republic of Korea;3. Department of Bioengineering, University of California San Diego, La Jolla, CA 92093, USA |
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| Abstract: | On of the hydrogen bonds formed by water molecules in lithium selenate monohydrate is evidently stronger than in the corresponding sulfate, whereas the other one is weaker. The temperature dependence of the stretching and bending modes of water is similar in both compounds, their frequencies decreasing on lowering the temperature. The study of mixed sulfate—selenate compounds made it possible to clearly show that the effective symmetry of the tetrahedral ions is higher than their local crystallographic one. |
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