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The title compound, [PdCl2(C18H24N2)]·(CH3)2SO·H2O, the PdII ion is in a distorted square-planar geometry. The Pd—N bond distances are 2.022 (2) and 2.027 (2) Å, the Pd—Cl bond distances are 2.2880 (7) and 2.2833 (7) Å, and the ligand bite angle is 80.07 (9)°. The dimethyl sulfoxide and water mol­ecules form linear chains along [100] by O—H...O and O—H...S hydrogen bonds, generating eight- and 12-membered rings. C—H...Cl inter­actions link the chains, forming a three-dimensional arrangement. In addition, the 4,4-di-tert-butyl-2,2′-bi­pyridine ligand exhibits π–π stacking inter­actions [centroid–centroid distances = 3.8741 (15) and 3.8353 (15) Å]. The DMSO solvent is disordered and was refined with an occupancy ratio of 0.866 (3):0.134 (3).

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The asymmetric unit of the title compound, [PdCl2(C10H8N2)]·0.5C4H8O2, consists of one PdII complex mol­ecule and a half-mol­ecule of 1,4-dioxane, the complete mol­ecule being generated by inversion symmetry. The PdII atom has an almost square-planar coordination formed by the 2,2′-bi­pyridine ligand and two chloride ligands. Two intra­molecular C—H...Cl hydrogen bonds occur. In the crystal, the PdII complex and 1,4-dioxane mol­ecules are connected by C—H...O hydrogen bonds, forming a layer parallel to (10-1). Within the layer, weak π–π inter­actions [centroid–centroid distance = 3.817 (4) Å] are observed between the pyridine rings.

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The title compound, C12H6Cl4S2, features an S—S bond [2.0252 (8) Å] that bridges two 2,3-di­chloro­phenyl rings with a C—S—S—C torsion angle of 88.35 (11)°. The benzene rings are normal one to the other with a dihedral angle of 89.83 (11)°. The crystal structure features inter­molecular Cl...Cl [3.4763 (11) Å] and π–π stacking inter­actions [centroid–centroid distances = 3.696 (1) and 3.641 (2) Å]. Intra­molecular C—H...S inter­actions are also observed.
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