The supramolecular structure of a cadmium complex with the new functionalized terpyridine ligand 4′-[4-(pyrimidin-5-yl)phenyl]-2,2′: 6′, 2"-terpyridine (L1): aqua(L1-κ3N,N′,N")(nitrato-κ2O,O′)(nitrato-κO)cadmium(II) dihydrate

The monomeric title compound, aqua(nitrato-kappa O-2,O')(nitrato-kappa O){4'-[4-(pyrimidin-5-yl)phenyl]-2,2':6',2 ''-terpyridine-kappa N-3,N',N ''}cadmium(II) dihydrate, [Cd(NO3)(2)(C25H17N5)-(H2O)]center dot 2H(2)O, consists of a seven-coordinated Cd-II centre bound to the novel 4'-[4-(pyrimidin-5-yl)phenyl]-2,2':6',2 ''-terpyridine (L1) ligand (behaving as a tridentate chelate), two nitrate anions (as chelating-bidentate and monodentate ligands) and a water O atom. Both chelating groups define the base of a slightly deformed pentagonal bipyramid, while the monocoordinated ligands occupy the apices. The four heterocycles in L1 form a planar skeleton, while the central benzene ring is rotated from this planar geometry by more than 30 degrees, probably because of packing effects. Noncovalent interactions lead to the formation of columnar arrays parallel to [100].