Exploring the Hydrogen Bonding Features and Electron Localisation of Molecules of Bisglycine with HX ( X = Br, Cl, I, F ) using Quantum Chemical Computations, AIM & ELF Analysis along with Vibrational Spectral Studies. IJC. 2025;64(11):1049-1058. doi:10.56042/ijc.v64i11.18549