title: A DFT study of the vibrational spectra of 1-, and 2-nitrotriphenylene.
abstract: The infrared (IR) and Raman spectra, and intensities of triphenylene, 1-, and 2-nitrotriphenylene were investigated by the density functional theory (DFT, B3LYP method) with 6-311 +G** basis set. Normal mode assignments are proposed with particular emphasis on the nitro group vibrations. Compared to 2-nitrotriphenylene (2-NTRP) 1-nitrotriphenylene (1-NTRP) is predicted to show asymmetric nitro stretches at higher frequencies. Through the vibrational study, the structure-spectroscopic relationships of these nitro polycyclic aromatic hydrocarbons (nitro-PAHs) are made, and possible insights into their differential mutagenic potencies correlated. The geometrical distortions of the TRP structure upon nitro group substitution and correlations between structural parameters and vibrational data as well as structure-function relationships related to the mutagenicity of this important class of polycyclic aromatic hydrocarbons are discussed.
authors: Department of Chemistry, Stephen F. Austin State University, Nacogdoches, TX 75962-13006, USA. Onchokekk@sfasu.edu
authors: Kefa K
authors: KK
authors: Onchoke
authors: Matthew E
authors: ME
authors: Parks
authors: Amanda H
authors: AH
authors: Nolan
mesh_terms: D002911:Chrysenes / Q000032:analysis*; D008958:Models, Molecular; D009574:Nitro Compounds / Q000032:analysis*; D011789:Quantum Theory; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman
chemical_list: D002911:Chrysenes; D009574:Nitro Compounds; C009590:triphenylene