Synthesis, characterizations, antitumor and antimicrobial evaluations of novel Mn(II) and Cu(II) complexes with NNN-tridentate s-Triazine-Schiff base ligand

•New s-triazine hydrazone lignad was designed.•Novel Mn(II) and Cu(II) Complexes with NNN-tridentate s-Triazine-Schiff base Ligand were synthesized.•X-Ray single crystal of the metal complexes were solved.•Chemical insight of the metal complexes structure was explored.•The anti-cancer and antimicrobial of the metal complexes were examined.