Towards Iron(II) Complexes with Octahedral Geometry: Synthesis, Structure and Photophysical Properties.

ABSTRACT: The control of ligand-field splitting in iron (II) complexes is critical to slow down the metal-to-ligand charge transfer (MLCT)-excited states deactivation pathways. The gap between the metal-centered states is maximal when the coordination sphere of the complex approaches an ideal octahedral geometry. Two new iron(II) complexes (C1 and C2), prepared from pyridylNHC and pyridylquinoline type ligands, respectively, have a near-perfect octahedral coordination of the metal. The photophysics of the complexes have been further investigated by means of ultrafast spectroscopy and TD-DFT modeling. For C1, it is shown that-despite the geometrical improvement-the excited state deactivation is faster than for the parent pseudo-octahedral C0 complex. This unexpected result is due to the increased lig

SUBMITTER: Darari M 

PROVIDER: S-EPMC7767130 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature