Crystal structure and Hirshfeld surfaces analysis of the nickel(II) complex of the Shiff base ligand 6,6'-{(1 E ,1' E )-[ethane-1,2-diylbis(aza-nylyl-idene)]bis-(methanylyl-idene)}bis-[2-(tri-fluoro-meth-oxy)phenol].

In the title complex, (6,6'-{(1 E ,1' E )-[ethane-1,2-diylbis(aza-nylyl-idene)]bis(methanylyl-idene)}bis-[2-(tri-fluoro-meth-oxy)phenol]-κ4 O , N , N ', O ')nickel(II), [Ni(C18 H12 F6 N2 O4 )], the nickel(II) ion has a square-planar coordination sphere, being ligated by two N and two O atoms of the Schiff base ligand 6,6'-{(1 E ,1' E )-[ethane-1,2-diylbis(aza-nylyl-idene)]bis-(methanylyl-idene)}bis-[2-(tri-fluoro-meth-oxy)phenol] ( L ). Inversion-related mol-ecules are linked by a short Ni⋯Ni inter-action of 3.2945 (6) Å forming a dimer. In the crystal, the dimers stack up the a axis, with a closest Ni⋯Ni separation of ca 3.791 Å. There are no other significant inter-molecular inter-actions present. However, the Hirshfeld surface analysis and the two-dimensional fingerprint plots indicate that the packing is dominated by H⋯F/F⋯H, H⋯H, O⋯H/H⋯O and C⋯H/H⋯C contacts.