TY - JOUR
T1 - Cerium(IV)-driven water oxidation catalyzed by a manganese(V)-nitrido complex
AU - Ma, Li
AU - Wang, Qian
AU - Man, Wai-Lun
AU - Kwong, Hoi-Ki
AU - Ko, Chi-Chiu
AU - Lau, Tai-Chu
PY - 2015/4/20
Y1 - 2015/4/20
N2 - The study of manganese complexes as water-oxidation catalysts (WOCs) is of great interest because they can serve as models for the oxygen-evolving complex of photosystem II. In most of the reported Mn-based WOCs, manganese exists in the oxidation states III or IV, and the catalysts generally give low turnovers, especially with one-electron oxidants such as CeIV. Now, a different class of Mn-based catalysts, namely manganese(V)-nitrido complexes, were explored. The complex [MnV(N)(CN)4]2- turned out to be an active homogeneous WOC using (NH4)2[Ce(NO3)6] as the terminal oxidant, with a turnover number of higher than 180 and a maximum turnover frequency of 6 min-1. The study suggests that active WOCs may be constructed based on the MnV(N) platform. High turnover: The study of manganese complexes as catalysts for the oxidation of water is of great interest as they can serve as models for the oxygen-evolving complex of photosystem II. The manganese(V)-nitrido complex [Mn(N)(CN)4]2- was now shown to catalyze the oxidation of water by cerium(IV) with a turnover number (TON) of higher than 180.
AB - The study of manganese complexes as water-oxidation catalysts (WOCs) is of great interest because they can serve as models for the oxygen-evolving complex of photosystem II. In most of the reported Mn-based WOCs, manganese exists in the oxidation states III or IV, and the catalysts generally give low turnovers, especially with one-electron oxidants such as CeIV. Now, a different class of Mn-based catalysts, namely manganese(V)-nitrido complexes, were explored. The complex [MnV(N)(CN)4]2- turned out to be an active homogeneous WOC using (NH4)2[Ce(NO3)6] as the terminal oxidant, with a turnover number of higher than 180 and a maximum turnover frequency of 6 min-1. The study suggests that active WOCs may be constructed based on the MnV(N) platform. High turnover: The study of manganese complexes as catalysts for the oxidation of water is of great interest as they can serve as models for the oxygen-evolving complex of photosystem II. The manganese(V)-nitrido complex [Mn(N)(CN)4]2- was now shown to catalyze the oxidation of water by cerium(IV) with a turnover number (TON) of higher than 180.
KW - cerium
KW - homogeneous catalysis
KW - manganese complexes
KW - nitrides
KW - oxidation
UR - http://www.scopus.com/inward/record.url?scp=84927743162&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84927743162&origin=recordpage
U2 - 10.1002/anie.201500507
DO - 10.1002/anie.201500507
M3 - RGC 21 - Publication in refereed journal
SN - 1433-7851
VL - 54
SP - 5246
EP - 5249
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 17
ER -