<i>catena</i>-Poly[[[(di-2-pyridylamine-κ<sup>2</sup><i>N</i><sup>2</sup>,<i>N</i><sup>2′</sup>)copper(II)]-μ-benzene-1,3-dicarboxylato-κ<sup>3</sup><i>O</i><sup>1</sup>,<i>O</i><sup>1′</sup>:<i>O</i><sup>3</sup>] monohydrate], a zigzag coordination polymer with strong π–π interactions
作者:Jelena Rogan、Dejan Poleti、Ljiljana Karanović
DOI:10.1107/s0108270111022451
日期:2011.7.15
The novel title coordination polymer, [Cu(C8H4O4)-(C10H9N3)]center dot H2O}(n), synthesized by the slow-diffusion method, takes the form of one-dimensional zigzag chains built up of Cu-II cations linked by benzene-1,3-dicarboxylate (ipht) anions. An exceptional characteristic of this structure is that it belongs to a small group of metal-organic polymers where ipht is coordinated as a bridging tridentate ligand with monodentate and chelate coordination of individual carboxylate groups. The Cu-II cation has a highly distorted square-pyramidal geometry formed by three O atoms from two ipht anions and two N atoms from a di-2-pyridylamine (dipya) ligand. The zigzag chains, which run along the b axis, further construct a three-dimensional metal-organic framework via strong face-to-face pi-pi interactions and hydrogen bonds. A solvent water molecule is linked to the different carboxylate groups via hydrogen bonds. Thermogravimetric and differential scanning calorimetric analyses confirm the strong hydrogen bonding.