Journal of thermal analysis

, Volume 35, Issue 4, pp 1157–1163 | Cite as

Thermal and other studies on bivalent metal selenltes

  • V. P. Verma
  • A. Khushu
Article

Abstract

BaSeO3·2·5H2O(I), PbSeO3· 2H2O(II) and CdSeO3·3.5H2O(III) were prepared and analysed. Their hygroscopicity and solubility was investigated. These compounds have high thermal Stability, as shown by their TG and DTA data. IR spectra show multi-dentate coordination of selenite to cations, due to considerable splitting of the asymmetric v3 and v4 bands of SeO 3 2 in the 780-730 cm−1 and 420-325 cm−1 region.

Tentative structures have been proposed involving bridging oxygen atoms.

Keywords

Oxygen Polymer Physical Chemistry 2H2O Inorganic Chemistry 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Zusammenfassung

BaSeO3-2.5H2O(I), PbSeO3 · 2H2O(II) und CdSeO3· 3.5H2O(III) wurden hergestellt, analysiert sowie deren Hygroskopizität und Löslichkeit untersucht. TG- und DTA-Untersuchungen erweisen die hohe thermische Stabilität dieser Verbindungen. Die IR-Spektren zeigen mehrzählige Koordination von Selenit zu Kationen, was aus einer beträchtlichen Aufspaltung der antisymmetrischenv3 undv4 Banden von SeO 3 2 im Bereich 780-730cm−1 bzw. 420-325 cm−1 hervorgeht. Es wurden versuchsweise Strukturen mit überbrückenden Sauerstoffatomen vorgeschlagen.

Резюме

Вновь полученные сое динения BaSeO3· 2,5H2O, PbSeO3 · 2H2O и CdSeO3 · 3,5H2O охарактеризованы эл ементным анализом и и зучена их гидроскопйчность и р астворимость. Согласно данным ТГ и Д ТА соединения облада ют высокой термоустойчивостью. ИК спектры показали полидентат ную координацию селе нит-аниона по отношению к катионам, вызывая значительное расщеп ление симметричныхv3 иv4 полос SeO 3 2 }- в области 780-730 и 420-325 см−1. Для всех соединений п редложены пробные ст руктуры, включающие мостиков ые атомы кислорода.

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References

  1. 1.
    V. P. Verma, Ph.D. Thesis (1974) I.I.T. New Delhi, India.Google Scholar
  2. 2.
    M. Qureshi, R. Kumar and V. Sharma, Anal. Chem., 46 (1974) 1855.CrossRefGoogle Scholar
  3. 3.
    J. P. Rawat, M. A. Khan and Pritam Singh, Bull. Chem. Soc. (Japan), 57 (1984) 1701.Google Scholar
  4. 4.
    M. Ebert and D. Havelicek, Coll. Czech. Chem. Commun., 46 (1981) 1740.Google Scholar
  5. 5.
    A. I. Vogel, A Textbook of Quantitative Inorganic Analysis including Elementary Instrumental Analysis, 1978, pp. 452, 457 and 467 Longman, 4th Edn.Google Scholar
  6. 6.
    K. Sathianandan, L. D. McCory and J. L. Margrave, Spectrochim. Acta, 20 (1964) 957.CrossRefGoogle Scholar
  7. 7.
    T. Losoi and J. Valkonen, Finn. Chem. Lett., 1 (1984) 1.Google Scholar
  8. 8.
    Mellor's Modern Inorganic Chemistry, revised and edited by G. D. Parkes, Longmans Green and Co., London (1963).Google Scholar
  9. 9.
    W. D. Harrison, J. B. Gill and D. C. Goodall, Polyhedron, 2 (1983) 153.CrossRefGoogle Scholar
  10. 10.
    H. D. Lutz, S. M. El. Suradi and B. Englen, Z. Naturforsch., Teil B, 32 (1977) 1230.Google Scholar
  11. 11.
    B. L. Khandelwal and V. P. Verma, J. Inorg. Nucl. Chem., 38 (1976) 763.CrossRefGoogle Scholar
  12. 12.
    F. A. Cotton and R. Francis, J. Am. Chem. Soc., 82 (1960) 2986.CrossRefGoogle Scholar
  13. 13.
    W. Stuart and T. L. Whatley, J. Inorg. Nucl. Chem., 31 (1969) 1639.CrossRefGoogle Scholar
  14. 14.
    M. Vedali, P. A. Vigate, G. Bandoli, D. A. Clements and V. Casellato, Inorg. Chem. Acta, 6 (1972) 671.CrossRefGoogle Scholar

Copyright information

© Wiley Heyden Ltd., Chichester and Akadémiai Kiadó, Budapest 1989

Authors and Affiliations

  • V. P. Verma
    • 1
  • A. Khushu
    • 1
  1. 1.Department of Applied ChemistryRegional Engineering CollegeHazratbal Srinagar KashmirIndia

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