Influence of cations on the vibrational spectra and structure of [WO4] complexes in molten tungstates
Source abstract
Abstract
The vibrational spectra and structure of isolated [WO4]2− anions in molten alkali, alkaline-earth, rare-earth, Pb, Bi, Zn, Sc, and Cd tungstates are studied by high-temperature Raman spectroscopy. The degenerate modes of the [WO4]2− anion in K-Gd tungstate melts are found to be split, which is interpreted in terms of the symmetry of the cation environment of the [WO4]2− anion in the melts. The frequency of the fully symmetric stretching mode (ν1) of the [WO4]2− group in molten tungstates is examined in relation to the polarizing power P and electronegativity γ of the cation. The origin of the nonmonotonic variation of ν1 with P and γ for the tungstate melts studied is discussed.
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Research context
OpenAlex topics: Solid-state spectroscopy and crystallography · Molten salt chemistry and electrochemical processes · Luminescence Properties of Advanced Materials
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References (21)
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1. Janz, G. and James, D.W., Raman Spectra and Ionic Interactions in Molten Nitrates, J. Chem. Phys., 1961, vol. 35, no.2, pp. 739–744.10.1063/1.1731994 ↗
2. Child, W.C., Begun, G.M., and Smith, D.H., Raman Spectroscopy of Oxyanions in Molten Salts, J. Chem. Soc., Faraday Trans., 1981, vol. 2, pp. 2237–2247.10.1039/F29817702237 ↗
3. Brooker, M.H. and Breding, M.A., Significance of Both Polarizability and Polarizing Power of Cations in Nitrate Vibrational Spectra, J. Chem. Phys., 1973, vol. 58, no.12, pp. 5319–5321.10.1063/1.1679146 ↗
4. Walrafen, G.E., Raman Spectra of Molten Sulfates, J. Chem. Phys., 1965, vol. 43, no.2, pp. 479–482.10.1063/1.1696767 ↗
5. Janz, G.J., Kozlovski, T.R., and Wait, S.C., Raman Spectrum and Vibrational Assignment for Molten Thallous Nitrates, J. Chem. Phys., 1963, vol. 39, no.7, pp. 1809–1812.10.1063/1.1734534 ↗
6. Voron’ko, Yu.K., Kudryavtsev, A.B., Osiko, V.V., and Sobol’, A.A., High-Temperature Raman Scattering Studies of Melt Structure and Crystallization Processes, Rost Krist., 1988, vol. 16, pp. 178–195.
7. Lazarev, A.N., Mirgorodskii, A.P., and Ignat’ev, I.S., Kolebatel’nye spektry slozhnykh okislov (Vibrational Spectra of Mixed Oxides), Moscow: Nauka, 1975, p. 210.
8. Basiev, T.T., Sobol, A.A., Zverev, P.G., et al., Comparative Spontaneous Raman Spectroscopy of Crystals for Raman Lasers, Appl. Opt., 1999, vol. 38, no.3, pp. 594–598.10.1364/AO.38.000594 ↗
9. Basiev, T.T., Sobol, A.A., Zverev, P.G., et al., Raman Spectroscopy of Crystals for Stimulated Raman Scattering, Opt. Mater., 1999, vol. 11, no.3, pp. 307–314.10.1016/S0925-3467(98)00030-5 ↗
10. Basiev, T.T., Sobol, A.A., Voronko, Yu.K., and Zverev, P.G., Spontaneous Raman Spectroscopy of Tungstates and Molybdates Crystals for Raman Lasers, Opt. Mater., 2000, vol. 15, no.8, pp. 205–216.10.1016/S0925-3467(00)00037-9 ↗
11. Zverev, P.G., Basiev, T.T., Sobol’, A.A., et al., Stimulated Raman Scattering Study of Alkali Tungstate Crystals, Kvantovaya Elektron. (Moscow), 2000, vol. 30, no.1, pp. 55–59.10.1070/QE2000v030n01ABEH001658 ↗
12. Porto, S.P.S. and Scott, J.F., Raman Spectra of CaWO4, SrWO4, CaMoO4, and SrMoO4, Phys. Rev., 1967, vol. 157, no.3, pp. 716–719.10.1103/PhysRev.157.716 ↗
13. Banishev, A.F., Voron’ko, Yu.K., Kudryavtsev, A.B., et al., High-Temperature Raman Scattering Study of Crystalline and Molten Calcium Tungstate, Kristallografiya, 1982, vol. 27, no.3, pp. 618–620.
14. Morell D.J., Cantrell, J.S., and Chang, L.L.Y., Phase Relations and Crystal Structures of Zn and Cd Tungstates, J. Am. Ceram. Soc., 1980, vol. 63, no.56, pp. 261–264.10.1111/j.1151-2916.1980.tb10715.x ↗
15. Trunov, V.K., Efremov, V.A., and Velikodnyi, Yu.A., Kristallokhimiya i svoistva dvoinykh molibdatov i vol’framatov (Crystal Chemistry and Properties of Binary Molybdates and Tungstates), Leningrad: Nauka, 1986, p. 186.
16. Gallucci, E., Goutaudier, C., Bourgeois, F., et al., Comprehensive Study of Third-Order Nonlinear Tungstates: Relationship between Structural and Vibrational Properties in Raman Shifters, J. Solid State Chem., 2002, vol. 163, pp. 506–512.10.1006/jssc.2001.9438 ↗
17. Bell, J.V., Heisler, J., Tannenbaum, H., and Goldenson, J., A Linear Phosphoryl Absorption Relationship, J. Am. Chim. Soc., 1954, vol. 76, no.3, pp. 5185–5189.10.1021/ja01649a075 ↗
18. Sanderson, R.T., Polar Covalence, New York: Academic, 1983, p. 320.
19. Bokii, G.B., Kristallokhimiya (Crystal Chemistry), Moscow: Nauka, 1971, p. 400.
20. Cherkasov, A.R., Galkin, V.I., Zueva, E.M., and Cherkasov, R.A., Concept of Electronegativity: Current Status, Usp. Khim., 1998, vol. 67, no.5, pp. 423–441.10.1070/RC1998v067n05ABEH000383 ↗
21. Voron’ko, Yu.K., Sobol’, A.A., Ushakov, S.N., and Tsimbal, L.I., Raman Spectra and Phase Transformations of the MLn(WO4)2 (M=Na, K; Ln=La, Gd, Y, Yb) Tungstates, Neorg. Mater., 2000, vol. 36, no.9, pp. 1130–1136 [Inorg. Mater. (Engl. Transl.), vol. 36, no. 9, pp. 947–953].