“…The C-C aromatic stretching vibrations gives rise to characteristic bands in both the observed IR and Raman spectra, covering the spectral range [19] from 1625 to 1400cm -1 . Therefore, the C-C stretching vibration of the title are found at 1735, 1663,1581,1541,1495,1446cm -1 in FTIR and 1736,1664, 1603,1444,11403cm -1 in the FT-Raman spectrum and these modes are confirmed by their PED values.…”