CoHn (n = 1-3): Classical and non-classical cobalt polyhydride

A detailed analysis of the cobalt-hydrogen interactions in CoHn complexes and a hydrogen rearrangement process in the H-Co···H-H complex is presented. The intermediate of this process is a cobalt trihydride that facilitates the intramolecular exchange of the hydrogen atoms between the dihydrogen and hydride ligands as shown in figure.