[μ2-N,N′-bis(2-oxy-3-ethoxybenzylidene)propane-1,2-diamine](methanol)-trinitratocopper(II)lutetium(III)

The Cu atom in the title compound (systematic name: {6,6'-diethoxy-2,2'-[propane-1,2-diylbis(nitrilomethylidyne)]diphen- olato-1 kappa O-4(1),O-1',O-6,O-6':2 kappa O-4(1),N,N',O-1'}(methanol-2 kappa O)trinitrato-1 kappa O-6,O'- copper(II)lutetium(III)), [CuLu(C21H22N2O4)(CH4O)(NO3)(3)] is N,N',O,O' chelated by the deprotonated Schiff base, the four chelating atoms forming a square plane above which lies the methanol molecule. The [Cu(C21H24N2O4)(CH4O)] unit uses the two ethoxy and two hydroxy O atoms to chelate the [Lu(NO3)(3)] unit. The Cu-II atom exists in a square-pyramidal geometry and the Lu-III atom in a bicapped square-antiprismatic geometry. Molecules are linked into a chain along the b axis by O-H center dot center dot center dot O hydrogen bonds. Two CH2 groups of the C2N2Cu ring and the H atoms of the attached methyl group are disordered equally over two positions.