Bis(imidazolium)-1,3-diphosphete-diide: A Building Block for FeC2P2 Complexes and Clusters

Scharnhölz MT, Coburger P, Gravogl L, Klose D, Gamboa-Carballo JJ, Le Corre G, Bösken J, Schweinzer C, Thöny D, Li Z, Meyer K, Grützmacher H (2022)

Publication Type: Journal article

Publication year: 2022

Journal

Angewandte Chemie International Edition Wiley

DOI: 10.1002/anie.202205371

Abstract

Reaction of the 6π-electron aromatic four-membered heterocycle (IPr)2C2P2 (1) (IPr=1,3-bis(2,6-diisopropylphenyl)-1,3-dihydro-2H-imidazol-2-ylidene) with [Fe2CO9] gives the neutral iron tricarbonyl complex [Fe(CO)3-η3-{(IPr)2C2P2}] (2). Oxidation with two equivalents of the ferrocenium salt, [Fe(Cp)2](BArF24), affords the dicationic tricarbonyl complex [Fe(CO)3-η4-{(IPr)2C2P2}](BArF24)2 (4). The one-electron oxidation proceeds under concomitant loss of one CO ligand to give the paramagnetic dicarbonyl radical cation complex [Fe(CO)2-η4-{(IPr)2C2P2}](BArF24) (5). Reduction of 5 allows the preparation of the neutral dicarbonyl complex [Fe(CO)2-η4-{(IPr)2C2P2}] (6). An analysis by various spectroscopic techniques (57Fe Mössbauer, EPR) combined with DFT calculations gives insight into differences of the electronic structure within the members of this unique series of iron carbonyl complexes, which can be either described as electron precise or Wade–Mingos clusters.

Authors with CRIS profile

Lisa Gravogl Lehrstuhl für Anorganische und Allgemeine Chemie Karsten Meyer Lehrstuhl für Anorganische und Allgemeine Chemie

Involved external institutions

Eidgenössische Technische Hochschule Zürich (ETHZ) / Swiss Federal Institute of Technology in Zurich CH Switzerland (CH) Sun Yat-Sen University CN China (CN)

How to cite

APA:

Scharnhölz, M.T., Coburger, P., Gravogl, L., Klose, D., Gamboa-Carballo, J.J., Le Corre, G.,... Grützmacher, H. (2022). Bis(imidazolium)-1,3-diphosphete-diide: A Building Block for FeC2P2 Complexes and Clusters. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202205371

MLA:

Scharnhölz, Moritz Theodor, et al. "Bis(imidazolium)-1,3-diphosphete-diide: A Building Block for FeC2P2 Complexes and Clusters." Angewandte Chemie International Edition (2022).

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