Bis(μ-adamantane-1,3-dicarboxylato-κ4O1,O1′:O3,O3′)bis[aqua(3-carboxyadamantane-1-carboxylato-κO1)(1,10-phenanthroline-κ2N,N′)erbium(III)] dihydrate

Abstract

The asymmetric unit of the binuclear centrosymmetric title compound, [Er2(C12H14O4)2(C12H15O4)2(C12H8N2)2(H2O)2]·2H2O, contains one ErIII atom, one coordinated water mol­ecule, one 1,10-phenanthroline (phen) ligand, two differently coordinated adamantane-1,3-dicarboxyl­ate (H2L) ligands and one lattice water mol­ecule. The ErIII ion is eight-coordinated by four O atoms from bridging L 2−, one O atom from HL −, one O atom from the coordinated water and two N atoms from a phen ligand. Extensive O—H⋯O hydrogen-bonding inter­actions result in the formation of chains which are further linked into a layer-like network by π–π stacking inter­actions centroid–centroid distance = 3.611 (3) Å] between adjacent phen ligands belonging to neighbouring chains. The carboxy group of the HL − ligand is equally disordered over two positions.