FT-IR, NMR spectral analysis and theoretical NBO, FMOs, UV-Vis analysis of 7,7’,8,8’-tetracyanoquinodimethane (TCNQ) in its ground and excited states by DFT and CIS methods. RJBAS. 2023;2(2):1-14. doi:10.59846/ajbas.v2i2.483