期刊
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
卷 92, 期 1, 页码 109-114出版社
SPRINGER
DOI: 10.1007/s10973-007-8747-7
关键词
coordination compound; coupled TG-FTIR; crystal structure; decomposition kinetics; DSC; EGA; imidazole derivatives; TG; XRD
The crystal structure of a manganese(II) 1-allylimidazole complex ([Mn(1-AIm)3(NO(3))(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.
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