“…In the thiazole part, the endo-cyclic -CQN, C-S bond distance and oCNC bond angle were found to be 1.29 Å, 1.75 Å and 109.51 respectively, which are almost similar to the conventional benzothiazole moiety with regard to endo-cyclic -CQN (1.31 Å), C-S (1.733 Å) bond length and oCNC (110.621) bond angle. 12 Moreover, exo-cylic -C-N, -N-N, -CQN and C-C bond distances were found to be 1.362 Å, 1.345 Å, 1.29 Å and 1.466 Å respectively. In the acrydine part, the endo-cyclic -CQN bond distance and the oCNC bond angle were found to be 1.35 Å and 1181 respectively.…”