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Thermal stability of urea complexes of magnesium nitrate and magnesium monophosphate

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Abstract

Urea complexes of magnesium nitrate and magnesium monophosphate were synthesized and investigated by thermal analysis, X-ray phase analysis and IR spectroscopy. It was found that the thermal stability of the complexes increases with the number of organic ligands in the complex. The mass losses corresponding to the stages of thermal decomposition of the compounds were calculated via the thermogravimetric curves. The mode of coordination between urea and Mgn was investigated by IR spectroscopy.

Zusammenfassung

Harnstoffkomplexe von Magnesiumnitrat und Magnesiummohophosphat wurden synthetisiert und mittels thermischer Analyse, Röntgenphasenanalyse und IR-Spektroskopie untersucht. Die thermische Stabilität der Komplexe nimmt mit der Zahl der organischen Liganden im Komplex zu. Die thermischen Zersetzungsschritten der Verbindungen entsprechenden Massenverluste wurden aus den thermogravimetrischen Kurven ermittelt. IR-spektroskopisch wurde die Art der Koordination zwischen Harnstoff und Mg(II) untersucht.

Резюме

Синтезированы и иссл едованы методами ДТА, РФА, ИКС карбамидные комп лексы нитрата и монофосфат а магния. Установлено, что с увеличением числа мо лекул органического лиганда в комплексах термоустойчивость п оследних повышается. По термог равиметрической кривой расчитаны изм енения массы, соответ ствующие стадиям термолиза по лученных соединений. На основании данных И К спектроскопии рассмотрен способ ко ординации карбамида по отношению кMg II.

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References

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Orlova, V.T., Kudinov, I.B., Kosterina, V.I. et al. Thermal stability of urea complexes of magnesium nitrate and magnesium monophosphate. Journal of Thermal Analysis 30, 1047–1051 (1985). https://doi.org/10.1007/BF02108535

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  • DOI: https://doi.org/10.1007/BF02108535

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