Desat, Marcella E. and Kretschmer, Robert (2018) En Route to Bis-Carbene Analogues of the Heavier Group 13 Elements: Consideration of Bridging Group and Metal(I) Source. CHEMISTRY-A EUROPEAN JOURNAL, 24 (47). pp. 12397-12404. ISSN 0947-6539, 1521-3765
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With the aim of exploring the effect of steric constraints imposed on the metal-metal interaction of bis-carbene analogues of thallium by the linking scaffold, seven dinuclear thallium diyls with a series of rigid, semirigid, and flexible bridging scaffolds were synthesized. The solid-state molecular structures were determined for four of these compounds by single-crystal XRD and compared with the results of DFT calculations, which were performed for all substances. These compounds serve as models to investigate the metal-metal distance in the absence of co-coordinated molecules (additional ligands, solvent molecules). In addition, the effect of the metal(I) precursor, and more specifically the counterion, on the synthetic access to bis-carbene analogues of indium and thallium was investigated. For indium, only InI yields the desired dinuclear indium diyl. With InBr no reaction was observed, and using InCl gave rise to a mononuclear indium(III) compound. For thallium, both TlI and TlBr allow access to the related bis-carbene analogue, although the yield with the latter is significantly lower. In contrast, no reactions were observed with TlCl and TlBF4.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | CENTER-DOT-TL; MAIN-GROUP ELEMENTS; OXIDATIVE ADDITION; BETA-DIKETIMINATO; LONDON DISPERSION; BOND ACTIVATION; COMPLEXES; INDIUM; GALLIUM; ALUMINUM(I); bridging ligands; carbene analogues; indium; metal-metal interactions; thallium |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Arbeitskreis Dr. Robert Kretschmer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 10 Jan 2020 09:24 |
| Last Modified: | 10 Jan 2020 09:24 |
| URI: | https://pred.uni-regensburg.de/id/eprint/14029 |
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