Transition metal complexes with thiosemicarbazide-based ligands 31. Dioxouranium(VI) complexes with N(1),N(4)-bis(salicylidene)- and N(1)-benzoylisopropylidene-N(4)-salicylidene-S-alkyl-isothio-semicarbazides

V. M. Leovac, E. Z. Ivegeš, K. Mészáros Szécsényi, K. Tomor, G. Pokol, S. Gál

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9 Citations (Scopus)

Abstract

Solvate complexes of UO22+ and N(1), N(4)-bis(salicylidene)-S-methylisothiosemicarbazone, (H2Me-L1), of general formula [UO2(Me-L1)S] (S= H2O, MeOH, EtOH, Py, DMF and DMSO) were synthesized. The methanolic UO22+ adducts of N(1)-benzoylisopropylidene-N(4)-salicylidene-S-alkylisothiosemicarbazone, (H2R-L2, R=Me, Prn) of general formula [UO2(R-L2)-MeOH], were also prepared. Thermal decomposition of the complexes was investigated in air and argon. The complexes decompose to α-U3O8 in air, while in argon the decomposition is not completed up to 1000 K. The temperature and the mechanism of decomposition of the complexes are a function of the solvent belonging to the inner coordination sphere.

Original languageEnglish
Pages (from-to)431-440
Number of pages10
JournalJournal of Thermal Analysis
Volume50
Issue number3
Publication statusPublished - Jan 1 1997

Keywords

  • Salicylaldehyde S-methylisothiosemicaibazone
  • Thermogravimetry
  • Uranyl complexes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Engineering(all)

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