A Deeper Insight in Solutions Containing the Hypothetical Labile Complex Species "Fe(CO)(4)THF"

Böttcher, Hans-Christian und Beck, Wolfgang (2019): A Deeper Insight in Solutions Containing the Hypothetical Labile Complex Species "Fe(CO)(4)THF". In: Zeitschrift für Anorganische und Allgemeine Chemie, Bd. 645, Nr. 3: S. 158-160

Abstract

In the literature it was proposed that the treatment of [Fe-2(CO)(9)] in THF resulted, during dissolution, in deep red solutions which should presumably contain labile complexes Fe(CO)(4)THF. This was supported by the fact that such solutions afforded, in the presence of N-donor ligands like pyridine (py) or pyrazine (pz), metal carbonyl complexes of the formula [Fe(CO)(4)(py)] and [Fe(CO)(4)(pz)], respectively. Herein we describe how the true nature of these solutions can be better explained by a valence-disproportionation reaction of the diiron nonacarbonyl, induced by the donor solvent THF, resulting in the compound [Fe(THF)(6)][Fe-3(CO)(11)]. The formation of the undecacarbonyl-triferrate(2-) in such solutions was unambiguously confirmed by IR spectroscopy and by the isolation and crystallization of the corresponding salt (PPN)(2)[Fe-3(CO)(11)];its molecular structure was determined, however, already described in the literature.

• Dokumententyp: Zeitschriftenartikel
• Fakultät: Chemie und Pharmazie > Department Chemie
• Themengebiete: 500 Naturwissenschaften und Mathematik > 540 Chemie
• ISSN: 0044-2313
• Sprache: Englisch