oa South African Journal of Chemistry - Preparation, structure characterization and thermal decomposition process of the dysprosium(III) m-Methylbenzoate 1,10-phenanthroline complex : research article

Volume 61, Issue 1
  • ISSN : 0379-4350



A dinuclear complex [Dy(m-MBA)phen]∙HO was prepared by the reaction of DyCl∙6HO, m-methylbenzoic acid and 1,10-phenanthroline in a 1:3:1 molar ratio, where m-MBA = m-methylbenzoate and phen = 1,10-phenanthroline. The complex was structurally characterized by single crystal X-ray diffraction, elemental analysis, UV and IR spectroscopy, molar conductance and TG-DTG techniques. It crystallizes in the monoclinic space group C with =15.962(16), = 18.505(18), = 22.547(2) Å; α = 90°, ß = 97.9820(10) °, = 90°; = 4. The unit cell contains a dinuclear molecule of the title compound. Each Dy(III) ion is eight-coordinated to one 1,10-phenanthroline molecule, one bidentate carboxylate group and four bridging carboxylate groups. The carboxylate groups are bonded to the dysprosium ions in two modes : chelating bidentate and bridging bidentate. The thermal decomposition process of [Dy(m-MBA)phen]∙HO has been followed by thermal analysis.

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