Hanauer, Tobias and Grothe, Michael and Reil, Markus and Korber, Nikolaus (2005) Syntheses and crystal structures of four new annnoniates with heptaarsenide (As-7(3-)) anions. HELVETICA CHIMICA ACTA, 88 (5). pp. 950-961. ISSN 0018-019X, 1522-2675
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The syntheses and X-ray single-crystal low-temperature structures of the four new ammoniates [Li(NH3)(4)](3)AS(7) (.) NH3 (1), [Rb(18-crown-6)](3)AS(7) (.) 8 NH3 (2). CS(3)AS(7)(.)6 NH3 (3), and (Ph4P)(2)CsAS(7)(.)5 NH3 (4) are reported. The compounds were obtained by either direct reduction of As with Li/Cs in liquid NH3, solvation of Cs4As6/Rb4As6 in liquid NH3, or by extraction of solid Cs3As7. While compound 1 contains isolated As-7(3-) polyanions, As-M contacts (M-Na-Cs) lead to neutral [Rb(18-crown-6)](3)As-7 units in 2, a three-dimensional, extended network in 3, and one-dimensional, infinite, (1)(infinity)[CsAS(7)](2-) chains in 4, respectively.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | LOW-TEMPERATURE MODIFICATION; 1ST CHARACTERIZATION; VIBRATIONAL-SPECTRA; ZINTL ANION; METAL; POLYPHOSPHIDES; AMMONIA; NH3; ION; CS; |
| 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: | 02 Jun 2021 08:20 |
| Last Modified: | 02 Jun 2021 08:20 |
| URI: | https://pred.uni-regensburg.de/id/eprint/36702 |
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