Luminescent cadmium 1,3-adamantanedicarboxylate coordination polymers with diverse topologies depending on dipyridylamide ligands

Poly[[(μ3-adamantane-1,3-di-acetato)[μ-N-(pyridin-3-yl)isonicotinamide]-nickel(II)] monohydrate], a layered coordination polymer with triangular (3,6) topology

The title compound, {[Ni(C14H18O4)(C11H9N3O)]·H2O}n, contains octa-hedrally coordinated NiII ions ligated by 1,3-adamantanedi-acetato (ada) ligands and N-(pyridin-3-yl)isonicotinamide (3-pina) ligands, to form coordination polymer layers with a triangular (3,6) grid topology based on [Ni2(OCO)2] dimeric units. The diperiodic layer motifs stack in an ABAB pattern mediated by C-H⋯O supra-molecular inter-actions between ada ligands and water mol-ecules of crystallization to form the full triperiodic crystal structure of the title compound.