Four different new Schiff basses tethered indolyl-triazole-3-thione hybrid were designed and synthesized. X-ray single crystal structure, tautomerism, DFT, NBO Hirshfeld analysis explored. crystallographic investigations with the aid of calculations used to analyze molecular packing studied systems. The H···H, H···C, S···H, Br···C, O···H, C···C N···H interactions are most important in 3. In cas...