Hydrothermal synthesis and structural characterization of a zigzag-chain polymer of {[p-MeBzlPh₃P][ZnCl₂(NA)]}_n (NA = nicotinic acid)

Abstract

A metal-organic coordination polymer, { [p-MeBzlPh₃P][ZnCl₂(NA)]} _n (1) (NA = nicotinic acid), has been hydrothermally synthesized and characterized by IR, UV-Vis, TG analysis, elemental analysis, fluorescence analysis and single crystal X-ray diffraction. Compound 1 crystallizes in the monoclinic system, space group P2₁/c, a = 10.1049(3) Å, b = 25.3888(6) Å, c = 14.7244(3) Å, β = 129.2740(10)°, V = 2924.31(13) ų, Z = 4, R ₁ = 0.0639, wR ₂ = 0.1695 and S = 1.133. The structure of 1 has a one-dimensional structure with [p-MeBzlPh₃P]⁺ counter-cations alternately residing on both sides of the one-dimensional anionic chains of the zigzag-chain polymer. Compound 1 exhibits strong fluorescence in solid state at room temperature.

Keywords:

• Zinc(II) complexes
• Nicotinic acid
• One-dimensional structure
• Zigzag-chain polymer
• Fluorescent property

Acknowledgments

The project was supported by the National Natural Science Foundation of China no. 20472019 (NSFC), Natural Science Foundation of Hunan no. 06JJ2002 (NSFH) and the Scientific Research Fund of Hunan Province Education Department no. 04A015 (HPED). We also want to acknowledge Dr Xian-Wen Wang (China University of Geoscience) for the structural analyses and discussion.