La(III) and Eu(III) 2-D coordination polymers of 5-nitroisophthalic acid (H₂Nip) and 1,10-phenanthroline (phen), [M(phen)(HNip)(Nip)]_n

Abstract

Lanthanum(III) and europium(III) complexes of 1,10-phenanthroline (phen) with 5-nitroisophthalate, [La(phen)(HNip)(Nip)] _n (1) and [Eu(phen)(HNip)(Nip)] _n (2), have been synthesized and characterized by elemental analysis and IR spectroscopy and studied by X-ray crystallography. The single crystal X-ray analyses show that both lanthanum(III) and europium(III) are coordinated by two nitrogens of phen and six oxygens from “Nip²⁻” and “HNip⁻”, resulting in a distorted square antiprism.

Keywords:

• Lanthanum
• Europium
• 5-Nitroisophthalate
• 1,10-Phenanthroline

Acknowledgments

The authors acknowledge the financial support by Zhejiang Provincial Natural Science Foundation (No. Y404294), the “151” Distinguished Person Foundation of Zhejiang Province, the “551” Distinguished Person Foundation of Wenzhou and Tarbiat Modares University of I. R. Iran.