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Keywords:

  • polyoxometalates;
  • proteins;
  • supramolecular chemistry;
  • template synthesis;
  • tungsten

The authors of this recent Communication would like to clarify some points with respect to the trinuclear tungsten cluster shown in Figure 3 therein: The cluster shows a central classical W3O10N3 unit with the characteristic coordination number 6 for the three metal atoms, while each of these has a “dominant” contact to a His139 group. Whether terminal oxygen atoms are protonated cannot be decided as mentioned in the paper (this also because of the limited accuracy of the WO bond lengths). In any case, the charge of the W3-type cluster was wrongly formulated (see text and legend to Figure 3) and cannot be given because of the protonation problem.