硫酸镧与氨基酸配合物的合成及表征  

Synthesis and Characterization of Lanthanum SulphateComplexes with Amino Acid

作　　者：黎植昌[1] 谭克俊[1] 刘炽清[1] 

机构地区：[1]西南师范大学应用化学研究所

出　　处：《中国稀土学报》1996年第1期79-82,共4页Journal of the Chinese Society of Rare Earths

基　　金：国家自然科学基金;国家教委重点科技资助

摘　　要：合成了七种未见文献报道的硫酸镧与氨基酸的配合物，通过化学分析、元素分析、红外光谱和热分析等，确定了所得配合物的组成为Ｌａ２（ＡＡ）ｎ（ＳＯ４）３·ｘＨ２Ｏ（ＡＡ＝氨基酸；ｎ＝２，４，６；ｘ＝４，６，８），并对它们的荧光光谱等进行了研究。Seven new complexes of lanthanum sulphate with amino acids were synthesized in ethanol and aqueous solution. Chemical analysis, elemental analysis , infrared spectra and conductance measurements show that the complexes have the general formula of La_2 (AA)_n (SO_4)_3xH_2O (AA = Glycine,L-Alanine, L-Valine, L-Tyrosine , L-Glutamic aicd , L-Lysine and L-Arginine; n= 2, 4, 6; x=4 , 6 , 8). Infrared spectra indicate that the carboxyl groups and sulphate ions of complexes are coordinated. The thermogravimatric and differential thermal analysis studies show that the reactants underwent a series of decomposition stages, the endproducts were the oxide of lanthanum. The fluorescence spectra of complexes were investigated.

关 键 词：硫酸镧 氨基酸 配合物 合成 稀土金属配合物 

分 类 号：O614.331[理学—无机化学]