Abstract :
Two trinuclear CuII pyrazolato complexes with a Cu3(μ3-E)-core (E = O2– or OH–) and terminal nitrite ligands in two coordination modes were characterized crystallographically, spectroscopically, and electrochemically. One-electron oxidation of the μ3-O species produces a delocalized, mixed-valent, formally CuII2CuIII-nitrite, but no nitrate. In contrast, under reducing conditions—addition of PhSH as an electron and proton donor—both complexes mediate the reduction of nitrite, releasing NO.
Graphical abstract :
Reference :
Kaige Shi, Logesh Mathivathanan, Athanassios K. Boudalis, Philippe Turek, Indranil Chakraborty, Raphael G. Raptis
Nitrite Reduction by Trinuclear Copper Pyrazolate Complexes: An Example of a Catalytic, Synthetic Polynuclear NO Releasing System
Inorg. Chem., 2019, 58 , 11, 7537-7544 - DOI: https://doi.org/10.1021/acs.inorgchem.9b00748
Contact chercheur :
Athanassios K. Boudalis (https://pomam.chimie.unistra.fr/aboudalis/), POMAM, Institut de Chimie (UMR 7177).