Supramolecular structures of V(III) complexes supported by PNP pincer ligands

The syntheses of vanadium complexes with tridentate PNP pincer ligands based on 2,6-diaminopyridine of the type [(PNP)VCl3] are reported. All compounds reveal distorted octahedral metal coordination geometry with three meridionally placed donor atoms of the PNP ligand and one chlorine atom occupying the equatorial plane of the octahedron. The axial positions are occupied by the other two chloride ligands. Complexes [(PNP)VCl3] were obtained as different solvates displaying hydrogen bonds between the PNP ligands and solvent molecules. The NH spacer groups in the PNP ligands are responsible for the establishment of hydrogen bonds that determines the solid state supramolecular architectures. (C) 2017 Elsevier B.V. All rights reserved.