The optimized molecular structure, vibrational wavenumbers, corresponding vibrational assignments of
5-nitro-2-phenylbenzoxazole have been investigated experimentally and theoretically. The energy and
oscillator strength calculated by Time Dependent Density Functional Theory results almost compliments
with experimental findings. Gauge-including atomic orbital 1H-NMR chemical shifts calculations were
carried out and compared with experimental data. The HOMO and LUMO analysis is used to determine
the charge transfer with in the molecule. The stability of the molecule arising from hyper-conjugative
interaction and charge delocalization has been analyzed using NBO analysis. molecular electrostatic
potential was performed by the DFT method and the infrared intensities and Raman activities are also
been reported. Fist hyperpolarizability is calculated in order to find its role in nonlinear optics. Antimicrobial
properties indicated that the title compound possessed a broad spectrum activity against the
tested Gram-positive, Gram-negative bacteria.