Soft X-ray RIXS (IMAGE) Helmholtz Association Caption Fundamental processes: Charge donation/backdonation in the [Fe(CO)5] model catalyst in solution was studied by resonant inelastic X-ray scattering. This method can be used to selectively probe the electronic structure at each atom in the iron-carbonyl bond. Credit Image: HZB/E. Suljoti Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.