An Organotin(IV) Hydrazone Complex: Synthesis, Crystal Structure and Non-Covalent Interactions

This abstract outlines the synthesis and structural characterization of a novel organotin(IV) complex, [SnMe(HL)Cl₂], derived from a versatile hydrazone ligand (H₂L). Motivated by the therapeutic potential of hydrazone-based organotin compounds, the authors utilized single-crystal X-ray diffraction to determine its molecular structure. The analysis reveals a distorted octahedral geometry around the Sn(IV) center, which coordinates to a tridentate ONO-donor hydrazone, a methyl group, and two chloride ions. To further understand its solid-state architecture, the researchers applied Hirshfeld surface analysis. This mapped the critical intermolecular forces stabilizing the crystal lattice, specifically highlighting C–O···H, Sn–Cl···H, and N–H···O hydrogen bonds, as well as π···π stacking with a distance of 3.761 Å between the aromatic ring centroids. Ultimately, the study provides a comprehensive crystallographic profile of a newly synthesized complex that holds promise for future bioinorganic and medicinal applications.