Abstract
In the title compound, {[Cu(2)(C(10)H(8)O(4))(2)(C(14)H(14)N(4)O(2))]·5H(2)O}(n), the Cu(II) 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 N-[2-(pyridin-3-yl-amino)-eth-yl]nicotinamide (pen) ligand in the apical position. [Cu(2)(cpp)(2)](n) coordination polymer layer motifs with embedded {Cu(2)(OCO)(4)} paddlewheel clusters are thereby constructed. These layer motifs are connected into a three-dimensional [Cu(2)(cpp)(2)(pen)](n) coordination polymer network by tethering pen ligands. Treating the {Cu(2)(OCO)(4) paddelwheel clusters as 6-connected nodes reveals an underlying cross-pillared self-penetrated rob network with 4(8)6(6)8 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.