Correction to: Nature Catalysis https://doi.org/10.1038/s41929-018-0109-2, published online 3 September 2018.

In the version of this Perspective originally published, in equation (1) and the sentence immediately following it, the vectors ‘\(\bar \mu\)’ and ‘\(\bar E\)’ should have appeared as ‘μ’ and ‘E’, in addition, in the equation, the cross product should have been the dot product; the equation should have read:

$$\Delta G_{{\rm{elec}}}^\ddagger = \left( {{\bf{\upmu}}_{{\mathrm{EL}}^\dagger } \cdot {\bf{E}}_{{\mathrm{EL}}^\dagger } - {\bf{\upmu}}_{{\mathrm{EL}}} \cdot {\bf{E}}_{{\mathrm{EL}}}} \right)$$
(1)

Furthermore, in Fig. 1, ‘\(\bar E\)EL’ should have been ‘\({\bf{E}}_{{\mathrm{EL}}^\dagger }\)’. These errors have now been corrected.