Photophysical Integrity of the Iron(III) Scorpionate Framework in Iron(III)-NHC Complexes with Long-Lived ²LMCT Excited States.

ABSTRACT: Fe(III) complexes with N-heterocyclic carbene (NHC) ligands belong to the rare examples of Earth-abundant transition metal complexes with long-lived luminescent charge-transfer excited states that enable applications as photosensitizers for charge separation reactions. We report three new hexa-NHC complexes of this class: [Fe(brphtmeimb)₂]PF₆ (brphtmeimb = [(4-bromophenyl)tris(3-methylimidazol-2-ylidene)borate]^-, [Fe(meophtmeimb)₂]PF₆ (meophtmeimb = [(4-methoxyphenyl)tris(3-methylimidazol-2-ylidene)borate]^-, and [Fe(coohphtmeimb)₂]PF₆ (coohphtmeimb = [(4-carboxyphenyl)tris(3-methylimidazol-2-ylidene)borate]^-. These were derived from the parent complex [Fe(phtmeimb)₂]P

SUBMITTER: Prakash O 

PROVIDER: S-EPMC9644379 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature