Correction to: Nature Chemistry https://doi.org/10.1038/s41557-021-00693-3, published online 30 April 2021.

In the version of this News & Views originally published, in Fig. 1a each pyridinone ring of the HOPO (3,4,3-LI(1,2-hydroxy-pyridinone)) ligand had an erroneous C=N double bond instead of a C–N single bond. These errors have now been corrected.