Hi Maxime,

i am refining neutron data with hydrogens on water molecules complexes that systematically bounce the whole molecule away from the hydroxyls or carboxylic groups or other waters. the Fo-Fc map is crystal clear about where the H atoms should go...

any commands i can enter in i.e. a .param file to inhibit repulsion and promote closer h bonds? thanks for your help,

I can investigate this and see what can be done. For this could you please send me an example? I'll need PDB files before and after refinement, reflection data file, any ligand cif files if used and indicate atoms in question.. Thanks, Pavel