Synthesis, structure, and magnetic properties of a self-assembled salicylaldimine neodymium(III) nitrate coordination polymer

Abstract

Complex formed by the reaction of neodymium nitrate with Schiff base has been synthesized and characterized by elemental analysis and IR spectroscopy. The crystal structure and magnetic properties of the self-assembled complex, [Nd₂(H₂salen)₃(NO₃)₆] _n (H₂salen =N,N′-ethylenebis(salicylideneimine)), are reported. The central Nd(III) ion is nine-coordinate with a typical tricapped trigonal prismatic coordination geometry with an infinite 2-D net structure, in which every Schiff-base ligand links two Nd(III) ions, and Nd(III) ions as nodes make up hexagons with 3 axes passing through the centers. The susceptibility data of the complex are well-fitted to the Curie–Weiss law and anti-ferromagnetic interactions take place between intermolecular adjacent paramagnetic ions.

Keywords:

• Coordination polymer
• Neodymium
• X-ray crystal structure
• Magnetic property
• Self-assembly

Acknowledgements

The authors would like to thank the Key Laboratory of Zhejiang University for X-ray data collection and the Education Committee of Zhejiang Province, China, for funds.