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 . (2019). Bulletin of Pure and Applied Sciences-Chemistry , 38(1), 40–59. https://doi.org/10.48165/