3094-84-6Relevant academic research and scientific papers
Tetrametallic Copper Complex to Nanoscale Copper: Selective and Switchable Dehydrogenation-Hydrogenation under Light
Guha, Ankur K.,Pratihar, Sanjay,Sarmah, Kasturi,Shelte, Amishwar Raysing
supporting information, (2021/12/13)
A discrete, photoactive, ultrafine copper nanocluster of fewer than hundreds of atoms with stimuli-responsive switchable redox-active states is highly desired to control two different antagonistic reactions. Herein, a mixed-valent tetrametallic copper complex (C-1) of N?O-N Schiff base ligand is disclosed, in which the five different Cu?Cu interactions were used to generate photoactive nanoscale copper [LCu0n, S-1] through the reduction of coordinated imine to the amine of C-1. The presence of a ligand provides stability and helps to homogenize the material (S-1) in the organic solvent. The cluster showed stimuli (O2/light)-responsive switching between its reduced (S-1) and oxidized [LCu0n?mCuOm, S-2] states that allows it to serve as a highly and poorly active (bistate, relative rate >5–12 fold) catalyst for the dehydrogenation of alcohols to aldehydes and hydrogenation of nitroaromatics to amino aromatics under the light.
