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.
Item Type: | Journal article |
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Faculties: | Chemistry and Pharmacy > Department of Chemistry |
Subjects: | 500 Science > 540 Chemistry |
ISSN: | 0044-2313 |
Language: | English |
Item ID: | 83432 |
Date Deposited: | 15. Dec 2021, 15:08 |
Last Modified: | 15. Dec 2021, 15:08 |