论文部分内容阅读
本文研究了二苯羟乙酸稀土络合物制备条件与组成关系,研究了它们在有机溶剂中的溶解度、红外光谱、核磁谱、紫外光谱、热谱等.二苯羟乙酸稀土络合物含有羟基和结晶水,结晶水数目随制备条件而异.这些络合物难溶于大部分有机溶剂,微溶于氯仿、四氯化碳、乙醚等,仅溶于乙醇、二硫化碳和二甲基亚矾等溶剂.紫外光谱中络合物最大吸收峰位于波数49800-48800cm~(-1)之间.它们在无水乙醇中的溶解度、络合物的缔合度和热分解温度,随原子序数增加而减少.
In this paper, the preparation conditions and compositions of the complexes of dibenzylparaben were studied, and their solubility in organic solvents, infrared spectra, nuclear magnetic resonance spectroscopy, ultraviolet spectroscopy, thermal spectroscopy and so on were studied.The rare earth complexes of diphenylethylacetate contained hydroxyl groups And crystal water, the number of crystal water varies with the preparation conditions These complexes are insoluble in most organic solvents, slightly soluble in chloroform, carbon tetrachloride, ether, etc., only soluble in ethanol, carbon disulfide and dimethyl alum Etc. The maximum absorption peak of the complex in the ultraviolet spectrum lies in the wave number 49800-48800cm -1.The solubility of these complexes in absolute ethanol, the association degree of the complex and the thermal decomposition temperature increase with the atomic number cut back.