Redox- and NIR-Active Iron(III) Triradicals as Catalysts for Radical Polymerization of Acrylamides and Methacrylates.

ABSTRACT: Two unprecedented redox-active, low-spin Fe(III)-triradical complexes, [Fe(III)(SS-NHC═S^•-)₃]·NHC═S (1·NHC═S; E═S) and [Fe(III)(SS-NHC═Se^•-)₃] (2; E═Se) have been synthesized and structurally characterized by SCXRD. They were further characterized spectroscopically using IR, Raman, EPR, and UV-vis-NIR spectroscopy. The low-spin electronic configuration of the central Fe(III) ion (1) and the nature of the magnetic interaction between the Fe(III) center and the three unpaired electrons in 1 have been investigated by magnetic measurements. In addition, the bonding stability and electron density distribution in 1 were studied by quantum chemical calculations and correlated with experimental results. Finally, a series of well-defined functional homopo

SUBMITTER: Das S 

PROVIDER: S-EPMC12363635 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature