Identification of a Two-Coordinate Iron(I)–Oxalate Complex

Martin Mayer, Nina Vankova, Ferdinand Stolz, Bernd Abel, Thomas Heine, Knut R. Asmis

Research output: Contribution to journalArticlepeer-review

Abstract

Exotic oxidation states of the first-row transition metals have recently attracted much interest. In order to investigate the oxidation states of a series of iron–oxalate complexes, an aqueous solution of iron(III) nitrate and oxalic acid was studied by infrared free liquid matrix-assisted laser desorption/ionization as well as ionspray mass spectrometry. Here, we show that iron is not only detected in its common oxidation states +II and +III, but also in its unusual oxidation state +I, detectable in both positive-ion and in negative-ion modes, respectively. Vibrational spectra of the gas phase anionic iron oxalate complexes [FeIII(C2O4)2], [FeII(C2O4)CO2], and [FeI(C2O4)] were measured by means of infrared photodissociation spectroscopy and their structures were assigned by comparison to anharmonic vibrational spectra based on second-order perturbation theory.

Original languageEnglish
Article numbere202117855
JournalAngewandte Chemie - International Edition
Volume61
Issue number16
DOIs
Publication statusPublished - 2022 Apr 11

Bibliographical note

Funding Information:
K.R.A. acknowledges instrumental support from the Fritz-Haber-Institute of the Max-Planck-Society. N.V. and T.H. thank ZIH Dresden for providing computational resources. B.A. and F.S. thank the German Science Foundation (DFG) for funding within the Research Unit FOR 2177. Open Access funding enabled and organized by Projekt DEAL.

Funding Information:
K.R.A. acknowledges instrumental support from the Fritz‐Haber‐Institute of the Max‐Planck‐Society. N.V. and T.H. thank ZIH Dresden for providing computational resources. B.A. and F.S. thank the German Science Foundation (DFG) for funding within the Research Unit FOR 2177. Open Access funding enabled and organized by Projekt DEAL.

Publisher Copyright:
© 2022 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Fingerprint

Dive into the research topics of 'Identification of a Two-Coordinate Iron(I)–Oxalate Complex'. Together they form a unique fingerprint.

Cite this