One aim of our investigation was to design systems that could be prepared in a laboratory and are feasible from a synthetic point of view. Mn pincer-type complexes or bidentate systems are well known to literature and known to stabilize Mn(I). They offer great variability in terms of electronic properties and steric demand. Therefore, a very careful choice of the pincer ligand could be sufficient to maintain a singlet ground state. However, based on our findings bidentate systems with additional CO (such as 8-Mn) seem to better suited to stabilize the singlet ground state.