Tetrametallic Copper Complex to Nanoscale Copper: Selective and Switchable Dehydrogenation-Hydrogenation under Light.
Chemistry
; 28(4): e202103383, 2022 Jan 19.
Article
em En
| MEDLINE
| ID: mdl-34672401
ABSTRACT
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 [LCu0 n , 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 [LCu0 n-m CuOm , 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.
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Base de dados:
MEDLINE
Assunto principal:
Cobre
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Álcoois
Idioma:
En
Revista:
Chemistry
Assunto da revista:
QUIMICA
Ano de publicação:
2022
Tipo de documento:
Article
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Índia