A Novel Coordination Polymer Constructed by Hetero−Metal Ions and 2,3-Pyridine Dicarboxylic Acid: Synthesis and Structure of [NiNa2(PDC)2(μ-H2O)(H2O)2]n

Resumo

A novel coordination polymer containing hetero-metal ions, [NiNa₂(PDC)₂(μ-H₂O)(H₂O)₂]_n, where PDC is 2,3-pyridine dicarboxylate ion, has been synthesized. In the structure, the PDC ligand chelates and bridges two Ni(II) and two Na(I) centers. Two kinds of metal centers are connected by μ⁴-PDC and μ²-H₂O to form 2D coordination layers. Hydrogen bonds between coordination water molecules and carboxylate oxygen atoms further link these 2D coordination layers to form 3D supramolecular network.