Crystal Structure of Diaquabis(7-diethylamino-3-formyl-2-oxo-2H-chromen-4-olato-K2O3,O4)-zinc(II) Dimethyl Sulfoxide Disolvate

Aaron B. Davis, University of Southern Mississippi
Frank R. Fronczek, Louisiana State University
Karl J. Wallace, University of Southern Mississippi

Publisher's Version


The structure of the title coordination complex, [Zn(C14H14NO4)2(H2O)2]·2C2H6OS, shows that the ZnII cation adopts an octa­hedral geometry and lies on an inversion center. Two organic ligands occupy the equatorial positions of the coordination sphere, forming a chelate ring motif via the O atom on the formyl group and another O atom of the carbonyl group (a pseudo-β-diketone motif). Two water mol­ecules occupy the remaining coordination sites of the ZnII cation in the axial positions. The water mol­ecules are each hydrogen bonded to a single dimethyl sulfoxide mol­ecule that has been entrapped in the crystal lattice.