Density functional theory calculation of vibrational spectroscopy of trans-1,2-bis(4-pyridyl)-ethylene

Zhiping Zhuang, Jianbo Cheng, Huiying Jia, Jianbo Zeng, Xiaoxia Han, Bing Zhao, Hongxing Zhang, Gang Zhang, Wei Zhao

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

The molecular geometry and vibrational frequencies of trans-1,2-bis(4-pyridyl)-ethylene (t-BPE) in the ground state were calculated using density functional theory (DFT) methods with 6-31++G(2d,p) basis set. The optimized geometric bond lengths and bond angles are obtained by DFT employing the hybrid of Beckes nonlocal three-parameter exchange and correlation functional and Lee-Yang-Parr correlation functional (B3LYP). Fourier transform Infrared (FTIR), Fourier transform Raman (FT-Raman) and near-infrared surface-enhanced Raman scattering (NIR-SERS) spectra of t-BPE on the silver foil substrate were recorded. All FTIR, FT-Raman and NIR-SERS band were assigned on the basis of the B3LYP/6-31++G(2d,p) method. The vibrational frequencies obtained by DFT(B3LYP) are in good agreement with observed results. Surface selection rules derived from the electromagnetic enhancement model were employed to infer the orientations of t-BPE on the silver foil substrate surface.

Original languageEnglish (US)
Pages (from-to)306-312
Number of pages7
JournalVibrational Spectroscopy
Volume43
Issue number2
DOIs
StatePublished - Mar 11 2007

All Science Journal Classification (ASJC) codes

  • Spectroscopy

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