Venkata Ramana Rao, P., et al. “NMR &Amp; Electronic Spectra, NLO, FMO, NBO and Thermodynamic Properties of Pentachlorophenol: An Experimental and Theoretical Investigation”. Asian Journal of Chemistry, vol. 32, no. 12, Dec. 2020, pp. 3057-62, doi:10.14233/ajchem.2020.22945.