Synthesis and structure of 2D copper coordination polymer [Cu2(3-PyOH)2(EDTA)]n

A 2D copper coordination polymer of [Cu-2(3-PyOH)(2)(EDTA)](n) (EDTA(4-)=ethylenediaminetetraacetate quadrivalent anion C10H12N2O8, 3-PyOH=3-hydroxypyridine) was synthesized and characterized by the element analysis, IR and single crystal X-ray diffraction. The title complex crystallizes in monoclinic system with space group P2(1)/c, a=1.327 5(3) nm, b=0.93039(19) nm, c=0.94844(19) nm, beta=108.21(3)degrees, and V=1.1128(4) nm(3), Z=2, R= 0.0252, wR=0.0661. Each copper(II) atom is five-coordinated by three 0 atoms and one N atom from two different EDTA(4-) groups and one N atom from 3-PyOH ligand, forming a distorted square-pyramidal coordination geometry. Two adjacent copper(II) atoms are bridged by the bis-tetradentate EDTA(4-) groups, constructing a two-dimensional layer structure along bc plane. The adjacent (CuCu)-Cu-... distances are 0.5025 (3) and 0.6113 (3) nm. CCDC:618806.