Application of NMR- and IR-spectroscopy to a study of the structure of the crystal hydrates of lanthanum molybdate and tungstate |
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| Authors: | A M Golub K S Aganiyazov V V Mank Ya Ya Shcherbak |
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| Institution: | (1) Donets Physicotechnical Institute, Kiev State University, Russia |
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| Abstract: | Using the techniques of proton magnetic resonance, differential thermal analysis, and IR-spectroscopy, we have carried out a study of the structures of lanthanum molybdate and lanthanum tungstate. We have established that the hydrogen atoms are incorporated in the structure of the compounds as a component of water molecules coordinated about the lanthanum atoms and about the anions of the salts, as well as a component of OH groups. On the basis of our results the formulas of the compounds can be written as La2(OH)2 · · Mo3O11 · 5 H2O and La2(OH)2 · W3O11 · 9 H2O. |
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