2-((E)-{3-[(E)-2-Hy-droxy-3,5-diiodo-benzyl-idene-amino]-2,2-dimethyl-prop-yl}imino-meth-yl)-4,6-diiodo-phenol.

The asymmetric unit of the title compound, C(19)H(18)I(4)N(2)O(2), comprises a potentially tetra-dentate Schiff base ligand. The disordered H atoms on the N and O atoms were refined with site occupancies of 0.54 (8)/0.46 (8) and 0.59 (7)/0.41 (7), respectively. The dihedral angle between the benzene rings is 73.3 (3)°. Intra-molecular O-H⋯N and N-H⋯O hydrogen bonds make S(6) ring motifs. Short I⋯I [3.8919 (7) Å] and I⋯Cg [Cg is a ring centroid; 3.911 (2) Å] contacts are present in the crystal structure. The crystal structure is further stabilized by inter-molecular π-π inter-actions [centroid-to-centroid distance = 3.827 (3) Å].