Thermal behaviour of the n-donor adducts of metal saccharinates III. Imidazole saccharinates of Co(II), Ni(II) and Cd(II)

P. Naumov, V. Jordanovska, B. Boyanov, G. Jovanovski

Research output: Contribution to journalArticlepeer-review

Abstract

The complexes [M(HIm)4(H2O)2](sac)2 (M=Co, Ni) and [Cd(HIm)2(sac)2]2 saccharin (sac) and imidazole (HIm) were synthesized and their thermal (TG, DTG and DTA) behaviour in the interval from room temperature up to 1000°C in a static air atmosphere was investigated. Irrespectively of whether the deprotonated saccharinato residues are present as ligands or ions or both as ligands and ions, the anhydrous complexes regularly decompose in two stages. The thermal data of 16 saccharinato complexes (including the title compounds) were correlated with the respective structural data. The general thermal stability order of the saccharinato complexes can be represented as: Pb(II)<Zn(II)<Co(II)≤Ni(II)<Cd(II) (the stability of the Cu saccharinates depends on the particular compound) and is dictated by several structural factors, e.g. metal ionic radii, participation of the water in the coordination sphere of the metal and other structural characteristics.

Original languageEnglish (US)
Article number393275
Pages (from-to)469-477
Number of pages9
JournalJournal of Thermal Analysis and Calorimetry
Volume66
Issue number2
DOIs
StatePublished - 2001

Keywords

  • N-donor aromatic adducts
  • Saccharinates
  • Thermal decomposition

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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