Poly[[[μ-1,4-bis(pyridin-4-ylmethyl)piperazine][μ-4-(2-carboxylatoethyl)benzoato]copper(II)] monohydrate], a coordination polymer with twofold interpenetrated cds topology networks

The title compound, {[Cu(C 10 H 8 O 4 )(C 16 H 20 N 4 )]·H 2 O} n , contains square-planar coordinated Cu II ions linked by 4-(carboxylatoethyl)benzoato (ceb) and 1,4-bis(pyridin-4-ylmethyl)piperazine (bpmp) ligands into a tri-periodic coordination polymer with twofold interpenetrating 6 5 8 cds topology. Positional crystallographic disorder among the copper atoms, the ethylcarboxy group of the ceb ligands, and the water molecules of crystallization exists in a refined 0.655 (6)/0.345 (6) ratio.