Metal–Nitrogen Infrared Stretching Frequencies in Dialkylamido-transition Metal Compounds

THE infrared and Raman spectral analysis of Ti(NMe2)4 reported by Burger et al.1 prompts us to disclose some of our infrared data on a number of dialkylamido derivatives of transition metals2. Of particular interest are the stretching frequencies of the metal–nitrogen bonds. All the compounds examined had a characteristic strong band in the 590–700 cm−1 region (Table 1) which was absent in the parent amine and which we believe is predominantly...