Bis(2,3-di-chloro-phen-yl) di-sulfide.

The title compound, C12H6Cl4S2, features an S-S bond [2.0252 (8) Å] that bridges two 2,3-di-chloro-phenyl 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 inter-molecular Cl⋯Cl [3.4763 (11) Å] and π-π stacking inter-actions [centroid-centroid distances = 3.696 (1) and 3.641 (2) Å]. Intra-molecular C-H⋯S inter-actions are also observed.

Di-chlorido-(4,4'-di-tert-butyl-2,2'-bi-pyridine-κ(2) N,N')palladium(II) dimethyl sulfoxide monosolvate monohydrate.

The title compound, [PdCl2(C18H24N2)]·(CH3)2SO·H2O, the Pd(II) 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 mol-ecules form linear chains along [100] by O-H⋯O and O-H⋯S hydrogen bonds, generating eight- and 12-membered rings. C-H⋯Cl inter-actions link the chains, forming a three-dimensional arrangement. In addition, the 4,4-di-tert-butyl-2,2'-bi-pyridine ligand exhibits π-π stacking inter-actions [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).

(2,2'-Bi-pyridine-κ(2) N,N')di-chloridopalladium(II) 1,4-dioxane hemisolvate.

The asymmetric unit of the title compound, [PdCl2(C10H8N2)]·0.5C4H8O2, consists of one Pd(II) complex mol-ecule and a half-mol-ecule of 1,4-dioxane, the complete mol-ecule being generated by inversion symmetry. The Pd(II) atom has an almost square-planar coordination formed by the 2,2'-bi-pyridine ligand and two chloride ligands. Two intra-molecular C-H⋯Cl hydrogen bonds occur. In the crystal, the Pd(II) complex and 1,4-dioxane mol-ecules are connected by C-H⋯O hydrogen bonds, forming a layer parallel to (10-1). Within the layer, weak π-π inter-actions [centroid-centroid distance = 3.817 (4) Å] are observed between the pyridine rings.