The photoinduced energy and structural relaxation of aqueous iron(II)-tris-bipyridine ([FeII(bpy)3]2+), upon excitation into its singlet metal-to-ligand charge transfer (1MLCT) band, and the population of its short-lived (≤0.6 ns) high-spin
excited state have been characterized by combined ultrafast optical and X-ray spectroscopies. Polychromatic femtosecond fluorescence up-conversion reveals a very short lived 1MLCT emission band, which decays in ≤20 fs by intersystem crossing to a 3MLCT, whose very
weak emission is also observed. Transient absorption studies show that the latter decays in <150 fs, while the population of the lowest excited high spin quintet state 5T2 occurs in ∼1 ps. Subsequently it decays in ∼665 ps to the ground state. Therefore, we
determined the structure of the high-spin excited state by picosecond X-ray absorption spectroscopy at the K edge of Fe. The structural analysis of both the transient difference and excited state X-ray spectra delivered an Fe–N bond elongation of 0.2 Å in the quintet state
compared to the singlet ground state.
No Supplementary Data.
No Article Media
IRON (II) COMPLEXES;
Document Type: Research Article
Publication date: April 1, 2007
More about this publication?
International Journal for Chemistry and Official Membership Journal of the Swiss Chemical Society (SCS) and its Divisions
CHIMIA, a scientific journal for chemistry in the broadest sense, is published 10 times a year and covers the interests of a wide and diverse readership. Contributions from all fields of chemistry and related areas are considered for publication in the form of Review Articles and Notes. A characteristic feature of CHIMIA are the thematic issues, each devoted to an area of great current significance.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Information for Advertisers
- Ingenta Connect is not responsible for the content or availability of external websites