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. Author manuscript; available in PMC: 2016 Jul 21.
Published in final edited form as: Acc Chem Res. 2015 Jun 16;48(7):2107–2116. doi: 10.1021/acs.accounts.5b00177

Table 2.

Selected Electrocatalytic Properties of Fe2(adtH)- and Fe2(pdt)-Based Models

catalyst acid k (s−1) overpotential (V)a
[(term-H)Fe2(adtH)(CO)2(dppv)2]+ ClCH2CO2H 5000 0.71
[(term-H)Fe2(HadtH)(CO)2(dppv)2]2+ CF3CO2H 58 000 0.51
[(μ-H)Fe2(adtH)(CO)2(dppv)2]+ ClCH2CO2H 20 0.90
[(term-H)Fe2(pdt)(CO)2(dppv)2]+ HBF4·Et2O 5 1.32
[(μ-H)Fe2(pdt)(CO)2(dppv)2]+ ClCH2CO2H 3 0.95
a

Overpotential = E°HA/H2 – Ecat, where E°HA/H2 is the standard reduction potential of the acid.48