Bis{2-[(phenylimino)ethyl]-1H-pyrrol-1-ido-κ2N,N′}nickel(II): a supramolecular structure formed by C—H...π hydrogen bonds

Abstract

In the title compound, [Ni(C12H11N2)2], the NiIIcation lies on an inversion centre and has a square-planar coordination geometry. This transition metal complex is composed of two deprotonatedN,N′-bidentate 2-[(phenylimino)ethyl]-1H-pyrrol-1-ide ligands around a central NiIIcation, with the pyrrolide rings and imine groups lyingtransto each other. The Ni—N bond lengths range from 1.894 (3) to 1.939 (2) Å and the bite angle is 83.13 (11)°. The Ni—N(pyrrolide) bond is substantially shorter than the Ni—N(imino) bond. The planes of the phenyl rings make a dihedral angle of 78.79 (9)° with respect to the central NiN4plane. The molecules are linked into simple chains by an intermolecular C—H...π interaction involving a phenyl β-C atom as donor. Intramolecular C—H...π interactions are also present.