Poly[[bis-[μ-3-(2-carboxyl-atophen-yl)propionato]{-[2-(pyridine-3-amido)-eth-yl]nicotinamide}-dicopper(II)] penta-hydrate].

In the title compound, {[Cu(CHO)(CHNO)]·5HO}, the Cu cations are coordinated in a square-pyramidal fashion, with four 3-(2-carb-oxy-phen-yl)propionate (cpp) carboxyl-ate O-atom donors in the basal plane, along with an N-atom donor from a -[2-(pyridin-3-yl-amino)-eth-yl]nicotinamide (pen) ligand in the apical position. [Cu(cpp)] coordination polymer layer motifs with embedded {Cu(OCO)} paddlewheel clusters are thereby constructed. These layer motifs are connected into a three-dimensional [Cu(cpp)(pen)] coordination polymer network by tethering pen ligands. Treating the {Cu(OCO) paddelwheel clusters as 6-connected nodes reveals an underlying cross-pillared self-penetrated network with 468 topology. The water mol-ecules of crystallization are held to the coordination polymer network by N-H⋯O and O-H⋯O hydrogen-bonding patterns.