丝氨酸及其La^(3+)配合物的~1H核磁共振谱参数的pH依赖性  

pH DEPENDENCE OF PMR PARAMETERS OF SERINE AND ITS La COMPLEX

作　　者：田清平[1] 沈联芳[1] 姚克敏[2] 扬硕望 

机构地区：[1]中国科学院武汉物理研究所波谱与原子分子物理开放实验室 [2]浙江大学化学系

出　　处：《波谱学杂志》1990年第3期327-333,共7页Chinese Journal of Magnetic Resonance

基　　金：国家自然科学基金

摘　　要：本文测得不同pH值下丝氨酸及其La^(3+)配合物的~1H谱,用PANIC程序对谱图进行模拟,获得化学位移和偶合常数,考察了~1H核磁共振谱参数的pH依赖性,从理论上进行了解释,并由得到的偶合常数计算出丝氨酸及其La^(3+)配合物的三种构象的比例,讨论了它们在不同pH条件下的变化,这些结果为下一步的生物大分子的研究提供了有用的信息。In this paper, the PMR spectra of L-serine and its complex with Lanthanum (La) at different pH values are presented. Program PANIC was used to simulate these spectra and their chemical shifts and coupling constants were obtained. The pH dependence of their chemical shifts and coupling constants was shown. The proportions of the three rotational isomers of L-serine were calculated. The conformations of L-serine and its La complex were discussed.

关 键 词：丝氨酸 镧 配合物 谱模拟 NMR PH值 

分 类 号：O614.331[理学—无机化学]