Gaertner, Stefanie and Hamberger, Markus and Korber, Nikolaus (2015) The First Chelate-Free Crystal Structure of a Silicide Transition Metal Complex [K0.28Rb7.72Si9Ni(CO)(2)](2)center dot 16NH(3). CRYSTALS, 5 (3). pp. 275-282. ISSN 2073-4352,
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Single-crystals X-ray structure analysis of very thermally labile and moisture sensitive ammoniate crystals of [K0.28Rb7.72Si9Ni(CO)(2)](2)16NH(3) show the presence of the very rarely observed nickel-silicide complex [{Ni(CO)(2)}(2)(mu-Si-9)(2)](8-), which was up to now only known in the 18-crown-6 involving solid [Rb@18-crown-6)](2)[K@18-crown-6)](2)Rb-4[{Ni(CO)(2)}(2)(mu-Si-9)(2)]22NH(3). This shows that, like already known for the heavier homologues, the presence of 18-crown-6 (1,4,7,10,13,16-hexaoxacyclooctadecane) is no precondition for the stabilization of the silicide cluster anion in solid state and the absence of the alkali metal ligand even allows for the crystallization in the higher symmetric monoclinic space group C2/c compared to the triclinic space group P-1 when 18-crown-6 is present.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | DELTAHEDRAL ZINTL IONS; GROUP 15 ELEMENTS; INTERMETALLOID CLUSTERS; GERMANIUM CLUSTERS; ATOMS; DERIVATIVES; POLYANIONS; SI-5(2-); GE; SN; silicides; ammonia; crystal structure; cluster compounds; Zintl ions |
| 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: | 11 Jun 2019 12:11 |
| Last Modified: | 11 Jun 2019 12:11 |
| URI: | https://pred.uni-regensburg.de/id/eprint/4874 |
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