Electrochemical Behavior of Ni(II) Complexes with N2S2 and N-6 Ligands as Potential Catalysts in Hydrogen Evolution Reaction
Por:
RamirezDelgado, V, OsorioMonreal, G, HernandezAyala, LF, ReyesVidal, Y, GarciaRamos, JC, RuizAzuara, L, OrtizFrade, L
Publicada:
1 oct 2015
Categoría:
Chemistry (miscellaneous)
Resumen:
In this work, two Ni(II) complexes with the tetradentate ligand N2S2
(pdto= 1,8-bis(2-pyridyl)-3,6-dithioctane,) and the hexa-dentate ligand
N-6 (bdahp= 2,9-bis-(2', 5'-diazahexanyl)-1,10-phenanthroline) were
prepared in order to explore its electrochemical behavior, that indicate
their potential use as molecular catalysts for the hydrogen evolution
reaction. The Ni(II)-pdto complex presented two consecutive one electron
transfer [Ni(II)-(pdto)] + 1e(-)[Ni(II)-(pdto)] and [Ni(I)-(pdto)]
+ 1 e(-) -> Ni(0) + pdto. On the other hand the Ni(II)-bdahp complex
presented the electrochemical reduction Ni(II)-(bdahp) + 1e(-)
Ni(I)-(bdahp) followed by a coupled chemical reaction in an ECi
mechanism, where a de-coordination of the diiminic moiety of the bdahp
ligand was proposed. It was demonstrated that the pdto ligand promotes
reduction over Ni(II) at less negative reduction potential in comparison
when the ligand bdahp is presented.
Filiaciones:
RamirezDelgado, V:
Ctr Invest & Desarrollo Tecnol Electroquim SC, Parque Tecnol Queretaro, Pedro De Escobedo 76703, Queretaro, Mexico
OsorioMonreal, G:
Ctr Invest & Desarrollo Tecnol Electroquim SC, Parque Tecnol Queretaro, Pedro De Escobedo 76703, Queretaro, Mexico
HernandezAyala, LF:
Univ Nacl Autonoma Mexico, Lab Quim Inorgan Med, Dept Quim Inorgan & Nucl, Fac Quim, Mexico City 04510, DF, Mexico
ReyesVidal, Y:
Catedra Conacyt CIDETEQ, Pedro Escobedo, Queretaro, Mexico
Ctr Invest & Desarrollo Tecnol Electroquim SC, Parque Tecnol Queretaro, Pedro De Escobedo 76703, Queretaro, Mexico
GarciaRamos, JC:
Univ Nacl Autonoma Mexico, Lab Quim Inorgan Med, Dept Quim Inorgan & Nucl, Fac Quim, Mexico City 04510, DF, Mexico
RuizAzuara, L:
Univ Nacl Autonoma Mexico, Lab Quim Inorgan Med, Dept Quim Inorgan & Nucl, Fac Quim, Mexico City 04510, DF, Mexico
OrtizFrade, L:
Ctr Invest & Desarrollo Tecnol Electroquim SC, Parque Tecnol Queretaro, Pedro De Escobedo 76703, Queretaro, Mexico
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