Crystal Structure of a New Zn(II) COordination Polymer Based on a Chiral Salen Schiff Base

Abstract

A new 1D Zn(II) coordination polymer [Zn(L)(PTA)(CH₃OH)₃]_n (1) (L = N,N′-bis-(2-hydroxy-1- naphthalidehydene)-(1R,2R)-cyclohexanediamine, PTA = terephthalic acid) is synthesized and characterized by single crystal X-ray diffraction and elemental analysis. The X-ray crystallographic study shows that complex 1 crystallizes in the triclinic space group Pī. The central Zn(II) ion is six-coordinated with one phenolic oxygen atom from the chiral ligand L, two carboxylate oxygen atoms from two PTA ligands, and three CH₃OH molecules. The Zn(II) ions are bridged by PTA molecules to form a 1D chain structure, and the chains are further assembled into a 2D supramolecular network via intermolecular hydrogen bonds and π–π interactions.