Syntheses, Crystal Structures, UV-Vis Absorption, and Fluorescent Properties of a Complex: [btx][Cu₂I₄]

Abstract

The self-assembly reaction of organic cation and metal iodides yielded a novel binuclear coordination compound, namely [btx][Cu₂I₄](1) [btx = 1,6-bis(triethylmethylammonium)xylol], which is characterized by X-ray crystallography, IR spectroscopy, fluorescence spectra, and UV-vis absorption spectra. The compound 1 crystallizes in Monoclinic, space group P2(1)/c with a = 8.2246(12), b = 11.5843(17), c = 15.005(2), α = 90°, β = 94.218(2)°, γ = 90°. In the anion [Cu₂I₄]²⁻, each Cu center is triangularly coordinated by two μ ₂-I(2) atoms and one terminal I(1) atom. The organic cationic [btx]²⁺ existed around it through supramolecular interactions.

Keywords:

• binuclear coordination compound
• organoammonium cations
• photoluminescent properties
• self-assembly
• UV-vis absorption spectra

Acknowledgments

The authors gratefully acknowledge the financial support of The National Science Foundation of China (No. 20671083).