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首页> 外文期刊>Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy >FT-Raman and FT-IR spectral studies on rare earth complexes with octanedioyl bis(benzo-15-crown-5)
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FT-Raman and FT-IR spectral studies on rare earth complexes with octanedioyl bis(benzo-15-crown-5)

机译：辛烷二基双（苯并-15-冠-5）稀土配合物的FT-拉曼光谱和FT-IR光谱研究

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摘要

Two kinds of complex (A and B) of rare eaith nitrates with octanedioyl bis(benzo-15-crown-5) (OBB) were synthesized in this work the FT-Raman, FT-IR and variable temperature FT-IR (VTFTIR) spectra of complexes A and B have been studied and compared with those of OBB ligand. The spectral differences among the complexes have been observed, especially, the differences of phenyl ring stretching and the C-H stretching of phenyl in the FT-Raman spectra and in the bands between 1200 cm~(-1) and 750 cm~(-1)in the VTFTIR spectra (298-453K). The remarkable differences in the Raman and IR spectra between OBB ligand and the complexes are in agreement with the results of elemental analysis, which suggest that there a sandwich-like configuration may exist in complex B. Two crown rings of each OBB ligand interact with a Ln(III) ion in complex B, whereas one crown ring of OBB ligand bonds with a Ln(III) ion in complex A. The results show that the combination of FT-Raman and FT-IR spectra is a powerful method forcharacterizing the fluorescent rare earth complexes.
机译：合成了稀有硝酸盐与辛二酰双（苯并-15-冠-5）（OBB）的两种配合物（A和B），即FT-拉曼光谱，FT-IR和可变温度FT-IR（VTFTIR）。研究了配合物A和B的光谱，并将其与OBB配体的光谱进行了比较。观察到了配合物之间的光谱差异，特别是在FT-拉曼光谱以及在1200 cm〜（-1）和750 cm〜（-1）之间的谱带中，苯环的拉伸和CH的CH拉伸的差异。在VTFTIR光谱中（298-453K）。 OBB配体与配合物之间在拉曼光谱和红外光谱上的显着差异与元素分析的结果相符，这表明配合物B中可能存在三明治状构型。每个OBB配体的两个冠环与a相互作用。络合物B中的Ln（III）离子，而OBB配体的一个冠环与络合物A中的Ln（III）离子结合。结果表明，FT-拉曼光谱和FT-IR光谱的组合是表征荧光的强大方法稀土配合物。

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