Synthesis, crystal structures, and magnetic properties of two supramolecular coordination complexes constructed by sulfonate groups

Abstract

Two supramolecular coordination complexes, [Cu(hps)(H₂O)] (1) (hps = 4-hydroxypyridone-3-sulfonic acid) and [Cu(phen)(SO₄)(H₂O)₂] (2) (phen = 1,10-phenanthroline), have been synthesized and characterized structurally as well as magnetically. The two complexes both exhibit supramolecular networks originating from interactions such as hydrogen bonding, π–π interactions and C–HO contacts. The magnetic properties of 1 and 2 have been investigated from 1.8 to 300 K. Results indicate that 1 and 2 show antiferromagnetic interactions between Cu(ΙΙ) centers.

Keywords:

• Supramolecular network
• Copper
• Crystal structure
• Magnetism

Acknowledgments

We are grateful to Prof. Qing-Feng Xu in Suzhou University for solving the crystal structures and Prof. Bin Liu in Northwest University for collecting the magnetic susceptibility data.