A Molecular Tetrahedral Cobalt-Seleno-Based Complex as an Efficient Electrocatalyst for Water Splitting.

The cobalt-seleno-based coordination complex, [Co{(SePPr)N}], is reported with respect to its catalytic activity in oxygen evolution and hydrogen evolution reactions (OER and HER, respectively) in alkaline solutions. An overpotential of 320 and 630 mV was required to achieve 10 mA cm for OER and HER, respectively. The overpotential for OER of this -containing complex is one of the lowest that has been observed until now for molecular cobalt(II) systems, under the reported conditions.