Abstract
Static electronic (hyper)polarizabilities of the two lowest-energy conformations of glycine have been computed in the gas phase by using high-level ab initio and DFT methods with the POL, LPOLX-ds and LPOLX-fl Sadlej basis sets. Response electric properties from Hartree–Fock, Møller–Plesset and DFT computations have been compared to those calculated with Coupled-Cluster levels. Long-range corrected CAM-B3LYP and ωB97X-D functionals are superior to B3LYP, B3PW91 and mPW1PW91 especially to predict first- and second-order hyperpolarizabilities. The results obtained with the POL, LPOLX-ds and LPOLX-fl basis sets have minor differences. The effects of the different conformation on the response electric properties have been illustrated.
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