Synthesis, Structure, and Luminescent Properties of Two Zn(II) Complexes Based on cis, cis, cis, cis-1,2,3,4-Cyclopentanetracarboxylic Acid

Abstract

Two new Zn(II) complexes, [Zn₂(HL)(bipy)₃(H₂O)]₂·12H₂O· 2ClO₄ (1) and [Zn(H₂L)(phen)(H₂O)]·H₂O (2) (H₄L = cis, cis, cis, cis-1,2,3,4-cyclopentanetracarboxylic acid, bipy = 2,2′-bipyridine, and phen = 1,10-phenanthroline), have been synthesized. Single-crystal X-ray analyses show that complex 1 features a tetranuclear structure, which is linked by hydrogen-bonding and π···π stacking interactions to give rise to an overall three-dimensional supramolecular network. Complex 2 exhibits a one-dimensional chain structure; adjacent chains are connected through π···π stacking interactions and O–H···O hydrogen bonds to lead to the formation of a two-dimensional supramolecular layer. Moreover, the luminescent/thermal properties of the complexes have also been investigated.

Supplemental materials are available for this article. Go to the publisher's online edition of Synthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry to view the supplemental file.

Keywords:

• crystal structures
• luminescent properties
• polycarboxylate ligand
• Zn(II) complexes

Acknowledgments

This work was supported by the National Natural Science Fund of China (21171151), Henan Outstanding Youth Science Fund (114100510017), and Program for New Century Excellent Talents in University (NCET-10–0143).