Spectroscopic (IR, UV, NMR) Characterization of 4, 8 -Di Methyl 2, 6 -Di Phenyl 1, 5 -Di Hydro S-Indacene and Study of Effect of Substituents in Its Electronic Properties . bpaschem 2019, 38 (1), 40-59. https://doi.org/10.48165/.