Hirshfeld surface analysis is a unique method used to investigate intermolecular contacts in crystalline structures. The two-dimensional fingerprint plots are used to give the exact percentage of intermolecular contacts in a molecule. Understanding the intermolecular interactions can be used to design new solids with desired properties. In the present work, the intermolecular contacts of five antimony(III) chloride complexes with heterocyclic thioamides formulated as [SbCl3(HL)2] (HL: 2-mercapto-thiazolidine (MTZD), 2-mercaptopyridine (PYT), 2-mercapto-3,4,5,6-tetrahydro-pyrimidine (tHPMT), 2-mercapto-benzimidazole (MBZIM), 5-ethoxy-2-mercapto-benzimidazole (EtMBZIM)), previously synthesized, and whose chemical structures were elucidated by various spectroscopic techniques and X-ray diffraction, were investigated by using Hirshfeld surface analysis via Crystal Explorer Program Version 17.5. Hirshfeld surface analysis shows that the interactions that contribute most to the crystal packing of the antimony(III) chloride complexes (1-5) are Cl…H/H…Cl, S…H/H…S and H...H.