Synthesis, structures, and fluorescence properties of two lanthanide [Ln = Sm(III), Nd(III)] coordination polymers

Abstract

Two three-strand coordination polymers [Ln₂(m-BDC)₃(MOPIP)₂ · H₂O] _n [Ln = Sm (1), Nd (2)] have been synthesized by hydrothermal reaction of lanthanide chloride with benzene-1,3-dicarboxylic acid and 2-(4-methoxyphenyl)-1H-imidazo[4,5-f][1,10]phenanthroline (MOPIP). The crystal structures of the complexes are zipper-like chains of eight-coordinate Ln³⁺, in which Ln³⁺ ions are bridged in two coordination modes by m-BDC²⁺ and decorated by MOPIP. The fluorescence property and thermal stability were also investigated.

Keywords:

• Lanthanides
• Benzene-1,3-dicarboxylic acid
• 2-(4-Methoxyphenyl)-1H-imidazo[4,5-f][1,10]phenanthroline
• Crystal structure

Acknowledgments

This work is supported by the Research Fund for the Doctoral Innovative Program of Jiangsu Province (No. CXLX11_0581).