After the geometric structure and infrared spectrum of three model chemical compounds of penicillin being optimized
calculated and relegated at 6-311+G* basis set level with the method of BLYP of density functional theory
infrared frequency of each model chemical compound carbony is attained and the structure of penicillin is therefore defined.Meanwhile
the cause of change of geometric structure and infrared spectrum of model chemical compounds is analyzed and the feasibility of studying big molecule with the method of density functional theory is proved.
关键词
模型化合物红外光谱密度泛函理论
Keywords
model chemical compoundinfrared spectrumDFT(density functional theory)