Direct Determination of Absolute Absorption Cross Sections at the L-Edge of Dilute Mn Complexes in Solution Using a Transmission Flatjet.

ABSTRACT: The 3d transition metals play a pivotal role in many charge transfer processes in catalysis and biology. X-ray absorption spectroscopy at the L-edge of metal sites probes metal 2p-3d excitations, providing key access to their valence electronic structure, which is crucial for understanding these processes. We report L-edge absorption spectra of Mn^II(acac)₂ and Mn^III(acac)₃ complexes in solution, utilizing a liquid flatjet for X-ray absorption spectroscopy in transmission mode. With this, we derive absolute absorption cross-sections for the L-edge transitions with peak magnitudes as large as 12 and 9 Mb for Mn^II(acac)₂ and Mn^III(acac)₃, respectively. We provide insight into the electronic structure with

SUBMITTER: Kubin M 

PROVIDER: S-EPMC5972834 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature