A coordination polymer, [Cu-2(2,2',3,3'-odpa)(H2O)(3)] center dot (H2O) (2,2',3,3'-odpa = 2,2,3,3'-oxydiphthalic acid) (1), has been obtained. Single crystal X-ray diffraction analysis indicated that 1 has a 2D distorted brick wall structure (6(3)-nets) constructed from tetracopper(II) SBUs. The relationship between its magnetic property and structure also has been investigated. (C) 2006 Elsevier B.V. All rights reserved.