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

Abstract

In the title complex, (6,6'-{(1E,1'E)-[ethane-1,2-diylbis(azanylylidene)]bis(methanylylidene)}bis[2-(trifluoromethoxy)phenol]-κ 4 O,N,N',O')nickel(II), [Ni(C 18 H 12 F 6 N 2 O 4 )], 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.