Bis(2,6-dihydroxybenzoato-κ2O1,O1′)-(nitrato-κ2O,O′)bis(1,10-phenanthroline-κ2N,N′)dysprosium(III)

In the mononuclear title complex, [Dy(C7H5O4)(2)(NO3)-(C12H8N2) 2], the Dy-III atom is in a distorted bicapped square-antiprismatic geometry formed by four N atoms from two chelating 1,10-phenanthroline (phen) ligands, four O atoms from two 2,6-dihydroxybenzoate (DHB) ligands and two O atoms from a nitrate anion. Intermolecular pi-pi stacking interactions between the phen and DHB ligands [centroid-centroid distances = 3.542 (4) and 3.879 (4) angstrom] and between the pyridine and benzene rings of adjacent phen ligands [centroid-centroid distance = 3.751 (4) angstrom] stabilize the crystal structure. Intramolecular O-H center dot center dot center dot O hydrogen bonds are observed in the DHB ligands.