547766-13-2Relevant academic research and scientific papers
Syntheses and crystal structures of copper and silver complexes with new imine ligands - Air-stable, photoluminescent CuIN4 chromophores
Patra, Goutam Kumar,Goldberg, Israel
, p. 969 - 977 (2003)
A series of new imine ligands [1 [C12H12N2S2), 2 (C12H12N2S2), 3 (C24H18N4S2), and 5 (C30H27N7) have been synthesized (1 and 2 are structural isomers). CuI and AgI complexes of the nonconjugated dithiophene-diimine ligands 1, 2 and the tripodal imine-amine ligand 5 have also been prepared and thoroughly characterized by spectroscopic techniques as well as by X-ray diffraction. In cyclic voltammetry at a glassy carbon milli electrode in anhydrous dichloromethane under dry N2, the corresponding CuI complexes [6(2C12H12N2S2 ·CuCLO4), 7 (2C12H12N2S2 ·CuCLO4), and 12 (C30H27N7·CuCLO4)] show quasi-reversible CuII/I couples with high redox potentials (1.001 V for 6, 0.958 V for 7, and 0.692 V for 12, vs. Ag/AgCl). This indicates that the π-acid ligands 1, 2, and 5 preferentially stabilize copper(I) over copper(II). The CuIN4 chromophores in the complexes 6, 7, and 12 display photoluminescence in dichloromethane at room temperature. The related silver complexes of the same three ligands 10 (2C12H12N2S2 ·AgCLO4), 11 (2C12H12N2S2 ·AgCLO4), and 13 [C30H27N7·Ag (CH3CN)CLO4] reveal similar structural features but lack specific photophysical properties, Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003.
