Spectroscopic studies of aryl substituted 1-phenyl-2-pyrazolines: Steric and electronic substitution effects

σ- or π-donor/acceptor ability effects of the C3 and C5-aryl substitutions on the UV-Vis, IR and NMR spectral data in 2-pyrazolines were investigated experimentally and theoretically. Marzieh Soltani, Hamid R. Memarian and Hassan Sabzyan.88