catena-Poly[[[aqua­copper(II)]-μ-(biphenyl-2,2′-di­carboxyl­ato)-μ-[N,N′-bis­(pyridin-4-yl)urea]] 1.25-hydrate]

In the title compound, {[Cu(C(14)H(8)O(4))(C(11)H(10)N(4)O)(H(2)O)]·1.25H(2)O}( n ), the Cu(II) cations are coordinated in a square-pyramidal fashion by trans carboxyl­ate O-atom donors from two diphenate (dip) ligands, trans pyridyl N-atom donors from two bis­(4-pyrid­yl)urea (bpu) ligands, and a ligated water mol­ecule in the apical position. [Cu(H(2)O)(dip)(bpu)]( n ) coordination polymer layer motifs are oriented parallel to ( [Image: see text] 02). These layer motifs display a standard (4,4) rectangular grid topology and stack in an AAA pattern along the a-axis direction to form the full three-dimensional crystal structure of the title compound, mediated by N—H⋯O and O—H⋯O hydrogen bonding patterns involving the water mol­ecules of crystallization. [Image: see text]