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.