Grassl, Tobias and Friedrich, Ute and Kaas, Marina and Korber, Nikolaus (2015) Reactions of Polyarsenides with Acetylene: Synthesis and Characterization of [Cs([18]crown-6)](2)As7C14H11 center dot 6NH(3) and As2C6H6. ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 641 (7). pp. 1203-1206. ISSN 0044-2313, 1521-3749
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The reaction of Cs3As7 with diphenylacetylene in the presence of 18crown-6 in liquid ammonia results in the formation of the new compound [Cs(18crown-6)](2)As(7)C(14)H(11)6NH(3), which crystallizes in black monoclinic crystals. It contains the first monosubstituated heptaarsenide anion with a hydrocarbon-only substituent and theoretical calculations show a significant influence of the organic substituent on the electronic structure within the cage. The (Z)-1, 2-diphenylethenyl-heptaarsenide di-anion can be seen as the first step towards the formation of 1, 2,3-triarsolides. Further experiments regarding the reaction of Rb3As11 and Cs3As11 with acetylene gas in liquid ammonia reveal the formation of the diarsabarrelene As2C6H6, which crystallizes as colorless orthorhombic crystals. Calculations based on the structural data obtained by X-ray crystallography show the electronically inert character of the arsenic lone pair.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 15 ZINTL IONS; 1,2,3-TRIPNICTOLIDE ANIONS; CLUSTERS; HEPTAPHOSPHIDE; CARBODIIMIDES; REACTIVITY; Polyarsenide; Acetylene; Liquid ammonia; Crystal structure; Zintl anions; X-ray diffraction |
| 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 Jul 2019 13:23 |
| Last Modified: | 11 Jul 2019 13:23 |
| URI: | https://pred.uni-regensburg.de/id/eprint/5396 |
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