Über die Koordination von Kohlenmonoxid an Bis(dithiolato)-Eisen-Komplexen [1] / On the Coordination of Carbon Monoxide on Bis(dithiolato)-Iron Complexes [1]
Open Access
- 1 February 1978
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 33 (2) , 190-196
- https://doi.org/10.1515/znb-1978-0214
Abstract
The reaction of CO with iron salts in the presence of benzene-dithiol depends on the oxidation state of iron, pH of the solution, temperature and CO pressure. In alkaline EtOH one obtains labile cis-[Fe(CO)2(C6H4S2)2]2- complexes, which cannot be isolated in the solid state. On acidifying, oxidizing with O2 or heating the solution, the CO ligands are split off; after reduction with NaBH4, CO can be co-ordinated again at pH > 7 under normal conditions. Reacting benzene-1-thiomethyl-2-thiol in alkaline medium with Fe2+ and CO yields the isolable [cis-Fe(CO)2(CH3S-C6H4-S)2], which is characterized by elemental analyses, IR, 1H NMR and mass spectra. It is a labile complex coordinating CO reversiblyKeywords
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