Comment on "Investigation of Zr(iv) and 89Zr(iv) complexation with hydroxamates: progress towards designing a better chelator than desferrioxamine B for immuno-PET imaging" by F. Guérard, Y.-S. Lee, R. Tripier, L. P. Szajek, J. R. Deschamps and M. W. Brechbiel, Chem. Commun., 2013, 49, 1002.

An alternative analysis of the complexes formed by Zr(iv) with acetohydroxamate shows that, in comparison with the results reported in the title article, a more complicated complexation model is found, the stability constants of the common complexes are considerably different and complexation of Zr(iv) does not show any unusual behaviour.