Photo-induced ligand substitution of Cr(CO)₆ in 1-pentanol probed by time resolved X-ray absorption spectroscopy.

ABSTRACT: Cr(CO)₆ was investigated by X-ray absorption spectroscopy. The spectral signature at the metal edge provides information about the back-bonding of the metal in this class of complexes. Among the processes it participates in is ligand substitution in which a carbonyl ligand is ejected through excitation to a metal to ligand charge transfer (MLCT) band. The unsaturated carbonyl Cr(CO)₅ is stabilized by solution media in square pyramidal geometry and further reacts with the solvent. Multi-site-specific probing after photoexcitation was used to investigate the ligand substitution photoreaction process which is a common first step in catalytic processes involving metal carbonyls. The data were analysed with the aid of TD-DFT computations for different models of photoproduc

SUBMITTER: Mascarenhas EJ 

PROVIDER: S-EPMC9348521 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature