A Novel Copper Diphosphonate Complex Cu(aedp) with Two-dimensional Framework Structure

Abstract

The hydrothermal reaction of Cu(II) salt with 1-aminoethylidenediphosphonic acid (H₄aedp) leads to one novel metal phosphonate, namely Cu(aedp) (1). The molecular structure has been elucidated by single-crystal X-ray diffraction, revealing that 1 exhibits a wavy layer architecture built from {CuO₅} pentahedrons interconnected by phosphonate groups. The complex has been characterized by IR spectroscopy and magnetic susceptibility measurements. Magnetic data analyses indicate the substantial antiferromagnetic coupling interactions between the magnetic centers.

Keywords:

• crystal structure
• magnetic behavior
• phosphonate

Acknowledgments

The authors gratefully acknowledge the financial support of the head of academic learning and the start-up fund for scientific research of Zhengzhou College of Animal Husbandry Engineering.