The polarized IR and Raman spectra of Dithiooxamide as a single crystal on solutionand as a KBr pellet are powder and the inelastic incoherent neutron scattering spectra of thepowder were measured and compared with the corresponding napthlene spectra. The previousassignment of fundamental vibration was confirmed. The medium dependent relative Intensitiesand frequencies of the vibrational bands are interpreted in terms of the competition between anintermolecular change transfer interacting (vibrating coupling) and hydrogen bonding.