Study on the reaction behavior of some trinuclear complexes of transition metals: [Fe 2M(μ 3-O) (μ-O 2CCH 3) 6(H 2O) 3] · xH 2O by the method of probe reaction of acetic acid

Qing Shan Xie, Ling Jie He, Bo Chen, Su Hua Cai, Yan Ming Wang, Wen Bo Zhou, Lin Na Zhang

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Abstract

The reaction behaviors of the title complexes have been studied in the system of dinitrogen gas by means of in situ IR. It has been found that some active fragments created at some stage of the thermal decomposition process of the complexes enable the acetic acid both obtained from the ligand of the complexes and introduced from outside to convert to acetone by decarboxylation. Their optimum reaction temperatures are of 240-270 °C for [Fe 2MnO(O 2CCH 2) 6(H 2O) 3], 290-320 °C for [Fe 3O-(O 2CCH 3) 6(H 2O) 3D, 300-330 °C for [Fe 2CoO(O 2CCH 3) 6(H 2O) 3] and 320-350 °C for [Fe 2NiO(O 2CCH 3) 6(H 2O) 3], indicating the lowering sequence of the activity of active species. At the same time it has been shown that this activity may come from the joined contributions of both the coordinating capability of the hetero-metals in the complexes and their structural factors. On the basis of the TGA, DTA and EI-MS data, the composition of the active fragments has been tentatively inferred as [Fe 2MnO-(0 2CCH 3) 3-2].

Original languageEnglish (US)
Pages (from-to)365-371
Number of pages7
JournalJiegou Huaxue
Volume17
Issue number5
StatePublished - Dec 1 1998

Keywords

  • Carboxylato complexes
  • Cobalt complexes
  • In situ IR
  • Iron complexes
  • Manganese complexes
  • Nickel complexes

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