THERMAL-BEHAVIOR OF BENZENESULFENAMIDES AND OF THEIR CHROMIUM CARBONYL-COMPLEXES

Benzenesulfenamides with the formula R-S-N-(R')(2) (R=C6H5 and R'=NC4H 8O, C7H7 and C6H11) and their chromium carbonyl complexes were studied by means of TG and mass spectrometric methods. The thermal behaviour of the compounds the stabilities of free sulfenamides are lower than t hose observed for the corresponding chromium carbonyl complexes. Combi ned thermogravimetry - mass spectrometry results suggest that the frag mentation mechanism of the carbonyl complexes involves cleavage of the Cr-S and Cr-CO bonds while that of sulfenamide depends mainly on the dissociation rates of the NR(2) groups.