A novel one-dimensional copper(II) coordination polymer of {[Cu(4-CPOA)(3- PyOH)2(H2O)2]?H2O}n (4-CPOA2– = 4-carboxyphenoxyacetate dianion, 3-PyOH = 3-hydroxypyri- dine) has been synthesized and characterized by elemental analyses, IR spectra and single-crystal X-ray diffraction. The complex C19H22N2O10Cu crystallizes in triclinic system, space group P1 with a = 7.672(2), b = 18.490(4), c = 13.271(3) ?, α = 72.81(3), β = 84.64(3), γ = 87.28(3)o, V = 1026.3(4) ?3, Z = 2, Mr = 501.94, Dc = 1.624 g/cm3, μ = 1.126 mm–1, F(000) = 518, the final R = 0.0580 and wR = 0.1310 for 3364 observed reflections with I > 2σ(I). Each Cu(II) ion is coordinated with two different carboxyl O atoms from two 4-carboxyphenoxyacetate groups, two N atoms from two 3-PyOH ligands and two water molecules, residing in a distorted octahedral environment. Adjacent Cu(II) atoms are linked by bi-monodentate 4-CPOA2– groups into an one-dimensional chain along the b axis. A three-dimensional supramolecular network is constructed by O–H…O hydrogen bonds. A novel one-dimensional copper (II) coordination polymer of (4-CPOA2- = 4-carboxyphenoxyacetate dianion, 3-PyOH = 3-hydroxypyri-dine) has been synthesized and characterized by elemental analyzes, IR spectra and single-crystal X-ray diffraction. The complex C19H22N2O10Cu crystallizes in triclinic system with space group P1 with a = 7.672 (2), b = 18.490 , c = 13.271 (3)?,? = 72.81 (3),? = 84.64 (3),? = 87.28 (3) o, V = 1026.3 (4)? 3, Z = 2, Mr = 501.94, Dc = 1.126 mm -1, F (000) = 518, the final R = 0.0580 and wR = 0.1310 for 3364 observed reflections with I> 2σ (I). Each Cu (II) ion is coordinated with Adjacent Cu (II) atoms are linked by bi-monodentate 4-CPOA2-groups into an one-dimensional chain along the b axis. A three-dimensional supramolecular net work is constructed by O-H ... O hydrogen bonds.