1,3-Bis(3,5-dimethyl-phen-yl)-5-methyl-benzene.

In the title compound, C(23)H(24), the dihedral angles formed by the central benzene ring with the peripheral benzene rings are 29.90 (5) and 34.95 (5)°. The crystal packing is stabilized by π-π stacking inter-actions with centroid-centroid distances of 3.815 (4) Å.

1-Methyl-3,5-bis-(3-methyl-phen-yl)benzene.

In the title compound, C(21)H(20), the dihedral angles formed by the central benzene ring with the outer benzene rings are 21.43 (6) and 31.70 (4)°. The crystal packing is stabilized by a weak π-π stacking inter-action, with a centroid-centroid distance of 3.843 (3) Å.

Bis{2-[(E)-benzyl-imino-meth-yl]-4-methyl-phenolato-κN,O}nickel(II).

In the title complex, [Ni(C(15)H(14)NO)(2)], the Ni(II) atom is located on an inversion centre and is coordinated by two O and two N atoms from two symmetry-related bidentate Schiff base ligands in a slightly distorted square-planar geometry. The phenyl and benzene rings in the ligand mol-ecule form a dihedral angle of 72.79 (8)°.