Crystal structure, spectroscopic characterization and Hirshfeld surface analysis of trans-diaqua[2,5-bis(pyridin-4-yl)-1,3,4-oxadiazole]dithiocyanatonickel(II)

Abstract

The reaction of 2,5-bis(pyridin-4-yl)-1,3,4-oxadiazole (4-pox) and thiocyanate ions, used as co-ligand with nickel salt NiCl2·6H2O, produced the title complex, [Ni(NCS)2(C12H8N4O)2(H2O)2]. The NiII atom is located on an inversion centre and is octahedrally coordinated by four N atoms from two ligands and two pseudohalide ions, forming the equatorial plane. The axial positions are occupied by two O atoms of coordinated water molecules. In the crystal, the molecules are linked into a three-dimensional network through strong O—H...N hydrogen bonds. Hirshfeld surface analysis was used to investigate the intermolecular interactions in the crystal packing.

Keywords

• coordination complex
• crystal structure
• 1,3,4-oxadiazole
• thiocyanate
• spectroscopy
• hydrogen bonds
• Hirshfeld analysis