Di-chlorido-{()-,-dimethyl-2-[phen-yl(pyridin-2-yl)methyl-idene]hydrazine-1-carbo-thio-amide}cadmium(II).

Abstract

This study reports the crystal structure of a 1:1 complex formed between the organic ligand Bp44mT (3,3-dimethyl-1-[(E)-[phenyl(pyridin-2-yl)methylidene]amino]thiourea) and cadmium chloride, determined at 100 K. The compound adopts monoclinic (2/m) symmetry with a layered arrangement. No intramolecular or intermolecular hydrogen bonding was detected; instead, supramolecular cohesion arises from hydrophobic contacts, π-π stacking, and long-range dispersion forces. The ligand is of interest for its anticancer and antiviral properties, as well as its potential in iron-overload conditions such as hemochromatosis, sickle cell disease, and beta thalassemia. The investigation also explores the structural basis of chelation selectivity and the possible application of the ligand in heavy metal poisoning involving cadmium, arsenic, lead, or mercury, and in environmental remediation contexts.

Mechanism

The ligand Bp44mT coordinates to cadmium ions to form a chelate complex; the crystal structure provides a basis for understanding the selectivity of metal ion capture relevant to heavy metal sequestration.