Crystal structure and Hirshfeld surfaces analysis of the nickel(II) complex of the Shiff base ligand 6,60'-{(1E,10'E)-[ethane-1,2-diylbis(azanylylidene)]-bis(methanylylidene)}bis[2-(trifluoromethoxy)-phenol].

In the title complex, (6,6′-{(1E,1′E)-[ethane-1,2-diylbis(aza­nylyl­idene)]bis(methanylyl­idene)}bis­[2-(tri­fluoro­meth­oxy)phenol]-κ⁴O,N,N′,O′)nickel(II), [Ni(C₁₈H₁₂F₆N₂O₄)], 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′-{(1E,1′E)-[ethane-1,2-diylbis(aza­nylyl­idene)]bis­(methanylyl­idene)}bis­[2-(tri­fluoro­meth­oxy)phenol] (L). Inversion-related mol­ecules are linked by a short Ni···Ni inter­action 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 inter­molecular inter­actions 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. [ABSTRACT FROM AUTHOR]