The sample's structure was confirmed by element analysis and infrared spectra.
方法：所得样品经元素分析、红外光谱证实其结构；
The raw material, intermediate and product were studied with infrared spectra.
并采用红外光谱对合成过程中的原料、中间体及产物进行了研究。
The raw material, intermediate and product were studied with infrared spectra.
并采用红外光谱对合成过程中的原料、中间体及产物进行了研究。
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