Infrared and Raman Spectra of Methylhydrazine and Symmetrical Dimethylhydrazine

Raman spectra for liquid methylhydrazine and sym-dimethylhydrazine, and infrared spectra for both liquid and vapor methylhydrazine and sym-dimethylhydrazine in the region 1600–650 cm−1 have been obtained. Frequency assignments are proposed for methylhydrazine and sym-dimethylhydrazine. The strong polarization of the Rayleigh scattering from these two compounds is explained on the basis of associated structures of approximately spherical symmetry.