TY - JOUR
T1 - A nickel phosphine complex as a fast and efficient hydrogen production catalyst
AU - Gan, Lu
AU - Groy, Thomas L.
AU - Pilarisetty, Tarakeshwar
AU - Mazinani, Shobeir K S
AU - Shearer, Jason
AU - Mujica, Vladimiro
AU - Jones, Anne
N1 - Publisher Copyright:
© 2015 American Chemical Society.
PY - 2015/1/28
Y1 - 2015/1/28
N2 - (Chemical Equation Presented) Here we report the electrocatalytic reduction of protons to hydrogen by a novel S2P2 coordinated nickel complex, [Ni(bdt)(dppf)] (bdt = 1,2-benzenedithiolate, dppf = 1,1′-bis(diphenylphosphino)ferrocene). The catalysis is fast and effi cient with a turnover frequency of 1240 s-1 and an overpotential of only 265 mV for half activity at low acid concentrations. Furthermore, catalysis is possible using a weak acid, and the complex is stable for at least 4 h in acidic solution. Calculations of the system carried out at the density functional level of theory (DFT) are consistent with a mechanism for catalysis in which both protonations take place at the nickel center.
AB - (Chemical Equation Presented) Here we report the electrocatalytic reduction of protons to hydrogen by a novel S2P2 coordinated nickel complex, [Ni(bdt)(dppf)] (bdt = 1,2-benzenedithiolate, dppf = 1,1′-bis(diphenylphosphino)ferrocene). The catalysis is fast and effi cient with a turnover frequency of 1240 s-1 and an overpotential of only 265 mV for half activity at low acid concentrations. Furthermore, catalysis is possible using a weak acid, and the complex is stable for at least 4 h in acidic solution. Calculations of the system carried out at the density functional level of theory (DFT) are consistent with a mechanism for catalysis in which both protonations take place at the nickel center.
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U2 - 10.1021/ja509779q
DO - 10.1021/ja509779q
M3 - Article
C2 - 25562523
AN - SCOPUS:84921845393
VL - 137
SP - 1109
EP - 1115
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 3
ER -