Villa, Matteo and Miesel, Dominique and Hildebrandt, Alexander and Ragaini, Fabio and Schaarschmidt, Dieter and Jacobi von Wangelin, Axel (2017) Synthesis and Catalysis of Redox-Active Bis(imino) acenaphthene (BIAN) Iron Complexes. CHEMCATCHEM, 9 (16). pp. 3203-3209. ISSN 1867-3880, 1867-3899
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Reactions of various substituted bis(imino) acenaphthenes (RBIANs) with FeC1(2)(thf)(1).(5) afforded the tetrahedral complexes (RBIAN) FeCl2 (2) from bulky a-diimines and the octahedral complexes [Fe(R-BIAN)(3)][FeCl4](2) (3) from less bulky ligands. The driving force for the formation of complexes 3 is the high ligand-field stabilization of the low-spin FeII center. The two sets of complexes exhibit distinct charge-transfer band intensities and redox activities. (R-BIAN) FeCl2 complexes showed re-versible ligand-centered reductions at -0.9 V (vs. FcH/FcH(+); FcH: ferrocene); further reduction led to decomposition. Irreversible oxidations were observed at 0.2 and 0.4 V, associated with a reduction at -0.4 V, as well as a ligand-centered redox event at 1.0 V. First applications of the Fe(BIAN) complexes to hydrogenations of alkenes indicated good catalytic activity under mild conditions.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | BIDENTATE NITROGEN LIGANDS; CROSS-COUPLING REACTIONS; ALPHA-DIIMINE LIGANDS; PALLADIUM COMPLEXES; ALKYL-HALIDES; ETHYLENE POLYMERIZATION; OLEFIN POLYMERIZATION; ELECTRONIC-STRUCTURES; ALKENE HYDROGENATION; CRYSTAL-STRUCTURES; electrochemistry; hydrogenations; imines; iron; redox-active ligands |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Arbeitskreis Prof. Dr. Axel Jacobi von Wangelin |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 14 Dec 2018 13:16 |
| Last Modified: | 11 Feb 2019 14:29 |
| URI: | https://pred.uni-regensburg.de/id/eprint/1367 |
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