2 research outputs found
Organometallic Ni Pincer Complexes for the Electrocatalytic Production of Hydrogen
Nonplatinum metals are needed to perform cost-effective
water reduction
electrocatalysis to enable technological implementation of a proposed
hydrogen economy. We describe electrocatalytic proton reduction and
H<sub>2</sub> production by two organometallic nickel complexes with
tridentate pincer ligands. The kinetics of H<sub>2</sub> production
from voltammetry is consistent with an overall third order rate law:
the reaction is second order in acid and first order in catalyst.
Hydrogen production with 90–95% Faradaic yields was confirmed
by gas analysis, and UV–vis spectroscopy suggests that the
ligand remains bound to the catalyst over the course of the reaction.
A computational study provides mechanistic insights into the proposed
catalytic cycle. Furthermore, two proposed intermediates in the proton
reduction cycle were isolated in a representative system and show
a catalytic response akin to the parent compound
Organometallic Ni Pincer Complexes for the Electrocatalytic Production of Hydrogen
Nonplatinum metals are needed to perform cost-effective
water reduction
electrocatalysis to enable technological implementation of a proposed
hydrogen economy. We describe electrocatalytic proton reduction and
H<sub>2</sub> production by two organometallic nickel complexes with
tridentate pincer ligands. The kinetics of H<sub>2</sub> production
from voltammetry is consistent with an overall third order rate law:
the reaction is second order in acid and first order in catalyst.
Hydrogen production with 90–95% Faradaic yields was confirmed
by gas analysis, and UV–vis spectroscopy suggests that the
ligand remains bound to the catalyst over the course of the reaction.
A computational study provides mechanistic insights into the proposed
catalytic cycle. Furthermore, two proposed intermediates in the proton
reduction cycle were isolated in a representative system and show
a catalytic response akin to the parent compound