稀土氨基酸配合物的相化学及新相的研究  

Study on Phase Chemistry of Complexes of Rare Earth Amino Acids

作　　者：高胜利[1] 陈三平[1] 李焕勇[1] 杨旭武[1] 史启祯[1] 

机构地区：[1]西北大学化学系

出　　处：《中国稀土学报》2001年第5期385-392,共8页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金资助项目 ( 2 98710 2 3);陕西省自然科学基金资助项目( 99H0 3)

摘　　要：详细研究了使用相平衡法完成的 43个稀土盐 α 氨基酸 水三元体系相图 ,讨论了盐的阳离子、抗衡阴离子、氨基酸结构及温度诸因素对相图的影响。在相平衡结果指导下制备了 15 0余种新型固态配合物 ,研究了它们的IR光谱、反射光谱、UV光谱、FS光谱和拉曼光谱 ,发现了其中存在的“三分组效应”、“四分组效应”、“电子云扩大效应” (Nephelanxeticeffect)、“Oddo Harkins规律”。分析了配合物的热分解机制。在详细比较已有稀土氨基酸配合物晶体结构的基础上 ,提出了预测系列配合物晶体结构数据的方法。使用RBC 1型转动弹量热计测定了几个系列配合物的恒容燃烧能 ,计算了它们的标准燃烧焓和标准生成焓 ,同时发现了其中的“三分组效应”和“四分组效应”Forty tyree phase diagrams of ternary system concerning rare earth salts, α amino acids and water, which was constructed by phase equilibrium methods, were studied. The influences of the factors such as positive ions, negative ions, the structure of amino acids, temperature on the phase diagrams were discussed. Under the guide of phase equilibrium results, over 150 new solid complexes were prepared. IR, reflecting, UV, FS, and Ramman spectra for these complexes were investigated and the regularity of 'Tripartite effect', 'Tetrad effect', 'Nephelanxetic effct', 'Oddo Harkins' was observed. Thermal decomposition processes of the complexes were determined. Based on the crystal structure of the complexes in comparison, the method which was used to predict the crystal structures for series complexes was founded. The constant volume combustion energies of the complexes were determined by RBC 1 type rotating bomb calorimeter. The standard enthalpies of combustion and standard enthalpies of formation were calculated for these complexes.

关 键 词：稀土 氨基酸 相化学 热化学 相平衡法 配合物 三元体系 相图 水 热分解 晶体结构 

分 类 号：O614.33[理学—无机化学] O642[理学—化学]