A new cation induced chain-like complex [Cu(H₂tea)(H₂O)(imi)][Cu(H₃tea)(imi)][Na{Mo₈O₂₆}] · 4H₂O

Abstract

A new complex [Cu(H₂tea)(H₂O)(imi)][Cu(H₃tea)(imi)][Na{Mo₈O₂₆}] · 4H₂O (H₃tea =triethanolamine, imi = imidazole) has been synthesized in aqueous solution and characterized by elemental analysis, IR spectroscopy, thermal gravimetric analysis, and single-crystal X-ray diffraction. X-ray diffraction reveals that β-[Mo₈O₂₆]⁴⁻ polyanions are linked by sodium ions to form a chain. The coppers are five- and six-coordinate for [Cu(H₃tea)(imi)]²⁺ and [Cu(H₂O)(H₂tea)(imi)]⁺, respectively. Crystal packing is due to hydrogen bonds and π ··· π stacking interactions, giving a 3-D polymeric network. The magnetic properties of the title compound are also presented.

Keywords:

• Polyoxometalate
• Hybrid material
• Copper(II) complex
• Magnetic property

Acknowledgments

The authors are thankful for financial support from the National Natural Science Foundation of China (Grant No. 20671017 and 20731002), the Specialized Research Fund for the Doctoral Program of Higher Education, and the Analysis and Testing Foundation of Northeast Normal University.