A new 2D copper(II) coordination polymer with a Schiff base ligand with weakly coordinating sulfonate groups affecting the structure

摘要

A new 2D copper(II) coordination polymer with the doubly deprotonated Schiff base ligand 2-(2-hydroxybenzylideneamino)ethanesulfonic acid (H _2Saes) has been synthesized, {[Cu(Saes)(4,4′-bpy)] _2·H _2O} _n (1), and characterized by single-crystal X-ray diffraction, IR spectroscopy, elemental and thermogravimetric analysis. Dinuclear copper complexes serve as secondary building blocks (SBUs) to construct an unusual coordination network with an interpenetrating CdSO _4 topology. In the crystal, the components form a stable 3D supramolecular architecture by O-H· · ·O, C-H· · ·O interactions and φ stacking.