Theoretical studies on molecular conformers and infrared spectra of Triethylamine

نویسندگان

چکیده

Based on the method of density functional theory B3LYP with 6-311++G(d, p) basis set, potential energy surface conformational isomerization along two-dimensional coordinates formed by dihedral angles ?1(C9N1C2C5) and ?2(C16N1C9C12) within range -180°~180° were scanned. And 12 ground state conformers triethylamine identified. Furthermore, second-order Moller-Plesset perturbation MP2 same set level, structures six lower-energy optimized their energies estimated. The results showed that G1 G1' C3 symmetry are most stable G4 G4' new methyl orientations In addition, some vibrational modes in infrared spectra G1~G4 assigned discussed. intensity is weak 0~1600 cm-1, while strong 2800~3300 cm-1. characteristic vibration such as umbrella CH stretching assigned. average shift corresponding peaks different conformations estimated to be less than 20

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ژورنال

عنوان ژورنال: Chinese Physics

سال: 2022

ISSN: ['1000-3290']

DOI: https://doi.org/10.7498/aps.71.20220123