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以氯铱酸和乙酰丙酮为原料,通过水溶液沉淀法制备乙酰丙酮铱配合物,通过苯-己烷体系对乙酰丙酮铱配合物进行重结晶提纯。元素分析确定乙酰丙酮铱配合物结构中的碳氢含量。红外光谱结果表明,1549,1523 cm-1处出现的吸收峰为乙酰丙酮铱配合物中六元环结构中C-O键和C-C键的伸缩振动吸收峰。核磁共振氢谱分析表明配合物中的氢的化学位移的位置和个数比与结构中的分子式相一致。根据对乙酰丙酮铱配合物的质谱结果进行分析,提出乙酰丙酮铱配合物可能的热分解机制。
The chloroacetic acid and acetylacetone were used as raw materials to prepare the acetylacetone iridium complex by aqueous solution precipitation method. The acetylacetone iridium complex was purified by benzene-hexane system. Elemental analysis determines the hydrocarbon content in the structure of the iridium acetylacetonate complex. The results of IR indicated that the absorption peak at 1549 and 1523 cm-1 was the stretching vibration absorption peak of C-O bond and C-C bond in six-membered ring structure of acetylacetone iridium complex. The results of 1H NMR showed that the position and number ratio of hydrogen in the complex were consistent with the molecular formulas in the structure. Based on the mass spectrometry results of the iridium acetylacetonate complex, the possible mechanism of thermal decomposition of the iridium acetylacetonate complex was proposed.