catena-Poly[[[aqua-copper(II)]-μ-(biphenyl-2,2'-di-carboxyl-ato)-μ-[N,N'-bis-(pyridin-4-yl)urea]] 1.25-hydrate].

In the title compound, {[Cu(C14H8O4)(C11H10N4O)(H2O)]·1.25H2O} n , the CuII cations are coordinated in a square-pyramidal fashion by trans carboxyl-ate O-atom donors from two diphenate (dip) ligands, trans pyridyl N-atom donors from two bis-(4-pyrid-yl)urea (bpu) ligands, and a ligated water mol-ecule in the apical position. [Cu(H2O)(dip)(bpu)] n coordination polymer layer motifs are oriented parallel to (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 mol-ecules of crystallization.