Distinct photodynamics of κ-N and κ-C pseudoisomeric iron(<scp>ii</scp>) complexes
Philipp Dierks, Ayla Kruse, Olga S. Bokareva, Mohammed J. Al‐Marri, Jens Kalmbach, Marc Baltrun, Adam Neuba, Roland Schoch, Stephan Hohloch, Katja Heinze, Michael Seitz, Oliver Kühn, Stefan Lochbrunner, Matthias Bauer
Abstract
Two closely related FeII complexes 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 similar 3MLCT lifetime as the tris(bidentate) [Fe(C^C)2(N^N)]2+ complexes with four mesoionic carbenes.
Topics & Concepts
ChemistryMedicinal chemistryStereochemistryPorphyrin and Phthalocyanine ChemistryMetal-Catalyzed Oxygenation MechanismsMagnetism in coordination complexes