Distinct photodynamics of κ-N and κ-C pseudoisomeric iron(ii) complexes

Article abstract of DOI:10.1039/d1cc01716k

Two closely related Fe^IIcomplexes with 2,6-bis(1-ethyl-1H-1,2,3-triazol-4yl)pyridine and 2,6-bis(1,2,3-triazol-5-ylidene)pyridine ligands are presented to gain new insights into the photophysics of bis(tridentate) iron(ii) complexes. The [Fe(N^N^N)₂]²⁺pseudoisomer sensitizes singlet oxygen through a MC state with nanosecond lifetime after MLCT excitation, while the bis(tridentate) [Fe(C^N^C)₂]²⁺pseudoisomer possesses a similar³MLCT lifetime as the tris(bidentate) [Fe(C^C)₂(N^N)]²⁺complexes with four mesoionic carbenes.