Syntheses and structures of copper benzene-1,4-dioxydiacetate complexes with 4,4′-bipyridine and 1,10-phenanthroline

Abstract

Two new copper complexes, [Cu₂(BDOA)(4,4′-bpy)₂] ⋅ 2H₂O (1) and [Cu(BDOA)(phen)] (2) (H₂BDOA = benzene-1,4-dioxydiacetic acid; 4,4′-bpy = 4,4′-bipyridine; phen = 1,10-phenanthroline), were synthesized and characterized by IR, elemental analysis, and single-crystal X-ray diffraction. Complex 1 exhibits a 2-D three-connected network structure with 6³ topology. Complex 2 displays a 1-D chain structure. Furthermore, the 3-D supramolecular networks of 1 and 2 are constructed via rich hydrogen bonds. Thermal stability of 1 is discussed in this article.

Keywords:

• Benzene-1,4-dioxydiacetic acid
• Copper complexes
• Hydrogen bonds
• Topology

Acknowledgments

This study was supported by the Natural Science Foundation of China (grant no. 20961007) and the Natural Science Foundation of Jiangxi province (grant no. 2008GZH0009).