Antibacterial, Cytotoxic Studies and Characterization of Some Newly Synthesized Symmetrical N³,N^3′-Bis(disubstituted)isophthalyl-bis(thioureas) and Their Cu(II) and Ni(II) Complexes

Scheme 1

Synthesis of disubstituted bisthiourea derivatives (ligands L¹–L⁵).