Lorenz, Corinna and Korber, Nikolaus (2018) Crystal Structure of the Protonated Germanide Cluster [HGe9](3-). CRYSTALS, 8 (10): 374. ISSN 2073-4352,
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A single crystal X-ray diffraction study of the new compound [Rb([2.2.2]crypt)](2) [Rb([18]crown-6)][HGe9]center dot 4NH(3) revealed the presence of the first protonated nine-atom germanide cluster [HGe9](3-). It forms from Rb4Ge9 in liquid ammonia, so that [Ge-9](4-) can be considered as the base and [HGe9](3-) its formally conjugated acid. The H atom is attached to a germanium vertex atom of the basal square plane, as it is known for [RGe9](3-) (R = C5H9 , Mes, etc.) or [HEX9](3-) (E = Si, Sn). In addition, the proton could be located unambiguously in the Fourier difference map. [HGe9](3-) also represents a nido cluster species with 22 cluster-bonding electrons, which can be considered the most stable structure for nine-atom cluster species for all group 14 elements.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DELTAHEDRAL ZINTL IONS; LIQUID-AMMONIA SOLUTION; ANIONS; CHEMISTRY; GE-9(4-); METAL; SN; GE; ANNOUNCEMENT; POLYANIONS; Zintl anion; liquid ammonia; crystal structure |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Anorganische Chemie > Arbeitskreis Prof. Dr. Nikolaus Korber |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 09 Dec 2019 14:35 |
| Last Modified: | 09 Dec 2019 14:35 |
| URI: | https://pred.uni-regensburg.de/id/eprint/13757 |
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