Synthesis, Crystal Structure, and Characterization of a Novel Coordinated Polymer [Cu₂I₄(Nppch)₂]

Abstract

Solution reaction of CuI and KI in DMF/H₂O with a solution of Nppch in CH₃OH/H₂O gave rise to a three-dimensional (3D) supramolecular compound based on a binuclear [Cu₂I₄(Nppch)₂] unit (Nppch = N-(4-pyridyl) pyridinium chloride hydrochloride). The crystal structural analysis indicated that the complex crystallized in a monoclinic space group, P2(1)/n, a = 9.6821(19) Å, b = 11.414(2) Å, c = 12.096(2) Å, β = 103.17(3)°, V = 1301.6(4) ų, Z = 2. The complex possessed a novel three-dimensional supramolecular framework formed by hydrogen bonds among repeating [Cu₂I₄(Nppch)₂] binuclear units. The compound was further characterized with infrared (IR) spectra, ultraviolet spectral properties, thermal analysis, and fluorescence properties.

Keywords:

• copper(I) complex
• crystal structure
• luminescent properties
• thermogravimetric properties

Acknowledgments

The authors gratefully acknowledge the financial support of the National Science Foundation of China (NSFC, numbers 20671083 and 21171148).