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

The title salt, [Ni(C(3)H(2)NS(2))(C(12)H(8)N(2))(2)]PF(6)·1.5C(4)H(8)O(2), was the unexpected product on making an attempt to prepare an [Ni(2-mercapto­thia­zol­ate)(1,10-phenanthroline)](+) complex by reaction of [NiCl(2)(1,10-phen­an­throline)] with 2-mercapto­thia­zolate. In the resulting complex, the 2-mercapto­thia­zolate anion acts as a chelating ligand, which coordinates to the Ni(II) 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 PF(6) (−) counter-anions lead to the formation of sheets parallel to the ac plane.