Streitferdt, Verena and Tiefenthaler, Susanne M. and Shenderovich, Ilya G. and Gaertner, Stefanie and Korber, Nikolaus and Gschwind, Ruth M. (2021) NMR-Spectroscopic Detection of an Elusive Protonated and Coinage Metalated Silicide [(NHCCu)-Cu-Dipp(eta(4)-Si-9)H](2-) in Solution. EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, 2021 (36). pp. 3684-3690. ISSN 1434-1948, 1099-0682
Full text not available from this repository. (Request a copy)Abstract
A simultaneously protonated and functionalized silicide cluster [(NHCCu)-Cu-Dipp(eta(4)-Si-9)H](2-) was detected and characterized in liquid ammonia by NMR spectroscopy. Key NMR results were corroborated by theoretical calculations. H-1-NMR line-widths at variable temperatures revealed that proton hopping in the metalated complex [(NHCCu)-Cu-Dipp(eta(4)-Si-9)H](2-) is less pronounced than in the non-complexed silicide [HSi9](3-). Besides [HSi9](3-) and [(NHCCu)-Cu-Dipp(eta(4)-Si-9)H](2-) also the unprotonated analogous cluster [(NHCCu)-Cu-Dipp(eta(4)-Si-9)](3-) was detected in solution. In addition, a new Si-29-NMR signal was obtained in the course of Si-29-NMR studies that we assigned to [(NHCCu)-Cu-Dipp(eta(4)-Si-9)](3-). The isolation of crystals of (K[2.2.2]-crypt)(2)K0.48Rb3.52[(NHCCu)-Cu-Dipp(eta(4)-Si-9)](2) prove the availability of the non-protonated (NHCCu)-Cu-Dipp(eta(4)-Si-9) fragment in solution. To the best of our knowledge the detection of [(NHCCu)-Cu-Dipp(eta(4)-Si-9)H](2-) represents the first case of a protonated and coinage metalated group 14 Zintl cluster in solution so far.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ZINTL ION CLUSTERS; BASIS-SETS; COORDINATION; COMPLEXES; SN; GE; DERIVATIVES; CHEMISTRY; EXPANSION; SN-9(4-); Carbene ligands; Copper; Liquid ammonia; Silicides; Structure elucidation; Zintl phases |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Arbeitskreis Prof. Dr. Nikolaus Korber Chemistry and Pharmacy > Institut für Organische Chemie > Arbeitskreis Prof. Dr. Ruth Gschwind Chemistry and Pharmacy > Central Analytical Services |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 05 Jul 2022 10:13 |
| Last Modified: | 05 Jul 2022 10:13 |
| URI: | https://pred.uni-regensburg.de/id/eprint/45600 |
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