Roesch, Andreas and Seifert, Fabian and Vass, Valentin and Goerls, Helmar and Kretschmer, Robert (2021) Synthesis, structure, and catalytic activity of dinuclear aluminium bis(amidinate) and bis(guanidinate) complexes. NEW JOURNAL OF CHEMISTRY, 45 (2). pp. 972-981. ISSN 1144-0546, 1369-9261
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Eight dinuclear methyl aluminium(iii) bis(amidinate) and bis(guanidinate) complexes have been synthesized in good to very good yields and were fully characterized by means of H-1, C-13, and IR spectroscopy as well as elemental analysis. Five of them were successfully converted to the respective dinuclear aluminium iodide complexes and a dinuclear aluminium chloride bis(amidinate) complex was directly accessed by deprotonation of the ligand using ethyl aluminium dichloride. The molecular solid-state structures of eleven complexes were obtained from X-ray diffraction analysis. Furthermore, the catalytic activity of the dinuclear methyl aluminium complexes 3 and 4 has been probed in the ring-opening polymerization of epsilon-caprolactone and l-lactide and the results highlight the impact of the metal-metal separation and the ligands' backbone on activity and selectivity.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | RING-OPENING POLYMERIZATION; LINKED BIS(AMIDINATE); HETEROMETALLIC COMPLEXES; COORDINATION CHEMISTRY; EPSILON-CAPROLACTONE; LIGANDS SYNTHESIS; CONVENIENT ROUTE; OXIDATION-STATE; ALKYL COMPLEXES; AMIDINATE; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 16 Sep 2022 10:20 |
| Last Modified: | 16 Sep 2022 10:20 |
| URI: | https://pred.uni-regensburg.de/id/eprint/47538 |
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