Chemical bonding in aqueous ferrocyanide: Experimental and theoretical X-ray spectroscopic study

Nicholas Engel, Sergey I. Bokarev, Edlira Suljoti, Raul Garcia-Diez, Kathrin M. Lange, Kaan Atak, Ronny Golnak, Alexander Kothe, Marcus Dantz, Oliver Kühn, Emad F. Aziz

Research output: Contribution to journalArticlepeer-review

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Abstract

Resonant inelastic X-ray scattering (RIXS) and X-ray absorption (XA) experiments at the iron L- and nitrogen K-edge are combined with high-level first-principles restricted active space self-consistent field (RASSCF) calculations for a systematic investigation of the nature of the chemical bond in potassium ferrocyanide in aqueous solution. The atom- and site-specific RIXS excitations allow for direct observation of ligand-to-metal (Fe L-edge) and metal-to-ligand (N K-edge) charge-transfer bands and thereby evidence for strong σ-donation and π-backdonation. The effects are identified by comparing experimental and simulated spectra related to both the unoccupied and occupied molecular orbitals in solution.

Original languageEnglish
Pages (from-to)1555-1563
Number of pages9
JournalJournal of Physical Chemistry B
Volume118
Issue number6
DOIs
StatePublished - 13 Feb 2014
Externally publishedYes

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