L-缬氨酸高氯酸L-缬氨酸一水合物的红外和拉曼光谱研究。
Infrared and Raman spectroscopic studies of l-valine l-valinium perchlorate monohydrate.
作者信息
Pandiarajan S, Umadevi M, Rajaram R K, Ramakrishnan V
机构信息
Laser Laboratory, Department of Microprocessor and Computer, School of Physics, Madurai Kamaraj University, Madurai 625021, India.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2005 Nov;62(1-3):630-6. doi: 10.1016/j.saa.2005.02.008.
FT-IR and FT-Raman spectra were recorded and analyzed for l-valine l-valinium perchlorate monohydrate crystals. The wave number assignments have been made for the functional groups, viz. COOH, COO(-), --NH(3), C--(CH(3))(2), C--C--N and C--H. One of the two amino acid residues remains in the zwitterionic form while the other residue exists in the cationic form. The symmetry of the ClO(4)(-) anion has been found to be lowered corresponding to ClO(2) group. The hydrogen bonds that prevail between amino acid residues, perchlorate anion and water molecule influence the wave numbers of several stretching and deformation modes to deviate from the expected values.
对L-缬氨酸高氯酸L-缬铵盐水合物晶体进行了傅里叶变换红外光谱（FT-IR）和傅里叶变换拉曼光谱（FT-Raman）的记录与分析。已对官能团，即COOH、COO(-)、--NH(3)、C--(CH(3))(2)、C--C--N和C--H进行了波数归属。两个氨基酸残基中的一个保持两性离子形式，而另一个残基以阳离子形式存在。已发现ClO(4)(-)阴离子的对称性相对于ClO(2)基团降低。氨基酸残基、高氯酸根阴离子和水分子之间存在的氢键影响了几种伸缩和变形模式的波数，使其偏离预期值。
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