(Methanol-κO)bis{2-methoxy-6-[(4-methylphenyl)iminiomethyl]phenolato-κ2O,O′}tris(nitrato-κ2O,O′)lanthanum(III)

Abstract

The asymmetric unit of title compound, [La(NO3)3(C15H15NO2)2(CH3OH)], consists of two Schiff base 2-methoxy-6-[(4-methylphenyl)iminiomethyl]phenolato (HL) ligands, three independent nitrate anions and one methanol molecule coordinated to LaIII. The coordination environment of the LaIII ion is formed by eleven O atoms. Three bidentate nitrate anions coordinate to the LaIII ion, while two HL ligands chelate the metal center with O atoms from the phenolate and methoxy groups. The HL ligands are zwitterionic, with protonated imine N atoms. The coordination sphere is completed by one methanol molecule. The protonated imine N atoms are involved in intramolecular N—H...O hydrogen bonds with the phenoxy groups and nitrate ligands. One O atom of one nitrate group is disordered over two sites of equal occupancy.