Methylnitrosocyanamide (3) and ethylnitrosocyanamide (4) were synthesized by aqueous nitrosation of the cyanamides. The ir spectra showed C= N and N= O bands. The uv spectra indicated resonance structures similar to those of nitrosoureas and nitrosamines. The pmr of 3 and 4 (like those of dialkylnitrosamines) showed N-alkyl nonequivalence attributed to restricted rotation about the N-NO bond. In cbntrast, the pmr of alkylnitrosoureas showed ...
