2 O, the Co II ion is coordinated by a bidentate 2,9-dimethyl-1,10-phenanthroline (dmphen) ligand, a bidentate nitrate anion, a water molecule and a monodentate dicyanamide group in a distorted octahedral geometry. One uncoordinated dmphen molecule is situated on a crystallographic twofold axis and the asymmetric unit is completed by one water molecule. In the crystal, molecules form a onedimensional framework in the [001] direction through O-HÁ Á ÁN and O-HÁ Á ÁO hydrogen bonds. The crystal packing is further stabilized by -stacking interactions between the dmphen rings of neighboring molecules, with a centroidcentroid separation of 3.5641 (8) Å and a partially overlapped arrangement of parallel dmphen rings with a distance of 3.407 (2) Å . Related literature

In the binuclear title compound, [Cd2(C2H3O2)4(C12H7N3O2)2], the CdII cations are linked by carboxyl­ate O atoms into a four-membered Cd2O2 rhombic ring with a Cd⋯ Cd separation of 3.7515 (5) Å. Each CdII atom is seven-coordinated by a bidentate 5-nitro-1,10-phenanthroline (5-NO2-phen) ligand and two bidentate acetate anions, one of which also acts as a bridge linking the two Cd atoms. The crystal packing is stabilized by π–π inter­actions between the phen rings of neighboring mol­ecules, with centroid–centroid distances of 3.491 (2) (intra­molecular) and 3.598 (2) Å (inter­molecular).

Abstract