Suchentrunk, Christof and Rossmier, Thomas and Korber, Nikolaus (2006) Crystal structures of the [18]-crown-6 ammoniate C12H24O6 center dot 2 NH3 and the cryptand [2.2.2] ammoniate C18H36O6N2 center dot 2 NH3. ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 221 (2). pp. 162-165. ISSN 0044-2968,
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The crystal structures of the new polyether ligand-ammoniates C12H24O6 center dot 2 NH3 (1) and C18H36O6N2 center dot 2 NE3 (2) have been elucidated at 123 K by single crystal X-ray structure analysis. Compound 1 crystallizes as yellow plate-like crystals in the monoclinic space group P2(1)/c (no. 14) with unit cell parameters a = 7.572(4) angstrom, b = 7.724(4) angstrom and c = 14.448(7) angstrom with an angle beta = 91.79(6)degrees. It consists of a molecule of [18]-crown-6 to which two ammonia molecules of crystallisation are bound by three hydrogen bonds each. The ammonia molecules reside below and above the plane of the crown ether oxygen atoms. Compound 2 crystallizes as colourless isometric crystals in the space group P6(3)22 (no. 182) with unit cell parameters a = 8.2568(5) angstrom and c = 18.992(2) angstrom. It consists of molecules of cryptand [2.2.2] which are connected by hydrogen bonds via ammonia molecules of crystallisation, resulting in two-dimensional layers parallel to the ab-plane.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | 1ST CHARACTERIZATION; 18-CROWN-6; RECOGNITION; COMPLEXES; SPECTRA; RADII; ION; VAN; supramolecular chemistry; hydrogen bond; low temperature crystal structure analysis; ammonia; crown ether; cryptand; X-ray diffraction; single crystal structure analysis |
| 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: | 03 Mar 2021 16:58 |
| Last Modified: | 03 Mar 2021 16:58 |
| URI: | https://pred.uni-regensburg.de/id/eprint/35297 |
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