Synthesis and Characterization of a One-dimensional Chain Polymer{[Cu(4-CPOA)(3-PyOH)_2(H_2O)_2]·H_2O}_n

1 INTRODUCTION Molecular self-assembly of coordination architec- tures is a rapidly developing research area of supra- molecular chemistry in recent years[1～6]. 4-Carboxy- phenoxyacetic acid (4-CPOAH2) is a multidentate flexible and rigid ligand, which is capable of coor- dinating to metal centers in versatile binding fashi- ons and can also form regular hydrogen bonds as both hydrogen-bond donors and acceptors. To date, only Na(I), Ni(II), Mn(II) and Co(II) complexes con- taining…

Synthesis and Characterization of a One-dimensional Chain Polymer{[Cu(4-CPOA)(3-PyOH)_2(H_2O)_2]·H_2O}_n

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.