配合物[Eu(4-MOBA)3(terpy)(H2O)]2的合成、表征、热分解机理及性质

doi:10.3866/PKU.WHXB201602173

Abstract

Abstract:

A new complex [Eu(4-MOBA)₃(terpy)(H₂O)]₂ (4-MOBA: 4-methoxybenzoate, terpy: 2, 2' :6', 2"-terpyridine) was synthesized. The complex was characterized using Fourier transform infrared (FTIR) spectroscopy, elemental analysis, and powder X-ray diffraction (XRD). The structure of the complex was determined using single-crystal XRD. In the complex, each Eu³⁺ ion is nine coordinated to one terpy molecule, one water molecule and three carboxylate groups. The carboxylate groups are bonded to the Eu³⁺ ion in three modes: bidentate, bridging bidentate, and monodentate. Based on thermogravimetry-differential scanning calorimetry/Fourier transform infrared (TG-DSC/FTIR) measurements, we determined the thermal decomposition mechanism. The emission spectra of the complex exhibited characteristic luminescence, suggesting that terpy and 4-methoxybenzoic acid can act as sensitizing chromophores in this system. Also, bacteriostatic activities for the complex to Candida albicans and Escherichia coli are discussed.

Key words: Lanthanide complex, Crystal structure, Thermal decomposition mechanism, Luminescence, 2, 2':6', 2"-Terpyridine, Antimicrobial activity

Jian-Xia HUO,Su-Wei SONG,Cheng-Wei JIN,Ning REN,Li-Na GENG,Jian-Jun ZHANG. Synthesis, Characterization, Thermal Decomposition Mechanism and Properties of the [Eu(4-MOBA)₃(terpy)(H₂O)]₂ Complex[J]. Acta Phys. -Chim. Sin. 2016, 32(4), 901-906. doi: 10.3866/PKU.WHXB201602173

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Synthesis, Characterization, Thermal Decomposition Mechanism and Properties of the [Eu(4-MOBA)₃(terpy)(H₂O)]₂ Complex

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Synthesis, Characterization, Thermal Decomposition Mechanism and Properties of the [Eu(4-MOBA)3(terpy)(H2O)]2 Complex

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Synthesis, Characterization, Thermal Decomposition Mechanism and Properties of the [Eu(4-MOBA)₃(terpy)(H₂O)]₂ Complex