{μ-6,6′-Diethoxy-2,2′-[ethane-1,2-diylbis(nitrilomethylidyne)]diphenolato}trinitratopraseodymium(III)zinc(II)

Abstract

In the title heteronuclear ZnII–PrIII complex (systematic name: {6,6′‐diethoxy‐2,2′‐[ethane‐1,2‐diylbis(nitrilomethylidyne)]diphenolato‐1κ4O1,O1′,O6,O6′:2κ4O1,N,N′,O1′}trinitrato‐1κ6O,O′‐praseodymium(III)zinc(II)), [PrZn(C20H22N2O4)(NO3)3], with the hexadentate Schiff base compartmental ligand N,N′‐bis(3‐ethoxysalicylidene)ethylenediamine (H22L), the ZnII and PrIII atoms are doubly bridged by two phenolate O atoms provided by the Schiff base ligand. The coordination of the ZnII atom is approximately square planar, involving the two imine N atoms and the two phenolate O atoms. The PrIII centre has a decacoordination environment of O atoms, formed by the phenolate ligands, the two ethoxy O atoms and two O atoms from each of the three nitrates. Some weak C—H...O and O...Zn [3.159 (4) Å] interactions generate a two‐dimensional zigzag sheet.