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

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

Research output: Contribution to journalArticle

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 - Jan 1 2001

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Saccharin
imidazoles
adducts
Metals
ligands
metals
Ions
Ligands
thermal analysis
ions
thermal stability
intervals
atmospheres
Differential thermal analysis
radii
air
Thermodynamic stability
room temperature
water
Water

Keywords

  • N-donor aromatic adducts
  • Saccharinates
  • Thermal decomposition

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

Cite this

Thermal behaviour of the n-donor adducts of metal saccharinates III. Imidazole saccharinates of Co(II), Ni(II) and Cd(II). / Naumov, Pance; Jordanovska, V.; Boyanov, B.; Jovanovski, G.

In: Journal of Thermal Analysis and Calorimetry, Vol. 66, No. 2, 393275, 01.01.2001, p. 469-477.

Research output: Contribution to journalArticle

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AU - Boyanov, B.

AU - Jovanovski, G.

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AB - 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.

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