Studies on Dithiocarbamates : Part II. Ultraviolet Absorption Spectra of Tetralzydro-1,3,5-Thiadiazine-2-Thiones.

Ultraviolet absorption spectra. of 3,5-dialkyl-,3,5 dlaryl-, 3-pheoyl-5-alkyl-and 3-aryal-5-methyl tetra-hydrothiadiazino-2-thiones have been examined. Each group is found to displays caracteristic pattern with \(\lambda\)max around 250 and 290 m\(\mu\). An attempt has been made to explain band positions in term of N and S conjugation