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  • 1 University of Rome ‘La Sapienza’ Department of Chemistry P.le A. Moro 5 00185 Rome Italy
  • | 2 Świcetokrzyska Academy Institute of Chemistry Checinska 5 25-020 Kielce Poland
  • | 3 University of Rome ‘La Sapienza Department of Chemical Engineering (I.C.M.A.) Via del Castro Laurenziano 7 00161 Rome Italy
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Abstract  

The crystal structure of a manganese(II) 1-allylimidazole complex ([Mn(1-AIm)3(NO3)2], where 1-Aim=1-allylimidazole), was characterized by X-ray diffraction (XRD) using SHELX-97. The thermal behaviour of the complex was investigated by thermogravimetry (TG) coupled with an FTIR unit. The complex showed a multi-step decomposition related to the release of the ligand molecules, followed by oxidation. The final residue at 1073 K was found to be manganese(II) oxide. Evolved gas analysis allowed to prove the oxidative decomposition pattern of the examined complex, initially proposed by the percentage mass loss data. Finally, a kinetic analysis of the oxidative decomposition steps was made using the Kissinger equation, while the complex nature of the decomposition kinetics was revealed by the isoconversional Ozawa-Flynn-Wall method.