Crystal structure of bis­­(1,10-phenanthroline-κ2N,N′)(1,3-thia­zole-2-thiol­ato-κ2S2,N)nickel(II) hexa­fluorido­phosphate 1,4-dioxane sesquisolvate

The title salt, [Ni(C3H2NS2)(C12H8N2)2]PF6·1.5C4H8O2, was the unexpected product on making an attempt to prepare an [Ni(2-mercapto­thia­zol­ate)(1,10-phenanthroline)]+ complex by reaction of [NiCl2(1,10-phen­an­throline)] with 2-mercapto­thia­zolate. In the resulting complex, the 2-mercapto­thia­zolate anion acts as a chelating ligand, which coordinates to the NiII ion with the thia­zolyl N and thiol­ate S atoms. In the crystal, π–π stacking inter­actions between the coordinating 1,10-phenanthroline mol­ecules of adjacent complexes result in a zigzag chain running parallel to the c axis. Weak C—H⋯X (X = O, F) hydrogen-bonding inter­actions between the chains and 1,4-dioxane solvent mol­ecules and PF6− counter-anions lead to the formation of sheets parallel to the ac plane.