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Dinnebier, Robert E. ; Pink, Maren ; Sieler, J. ; Stephens, Peter W.:
Novel Alkali-Metal Coordination in Phenoxides : Powder Diffraction Results on C₆H₅OM (M = Li, Na, K, Rb, Cs).
In: Inorganic Chemistry.
Bd. 36
(1997)
Heft 16
.
- S. 3398-3401.
ISSN 1520-510X
DOI: https://doi.org/10.1021/ic961385i
Abstract
We report the ab initio structure solutions of C6H5OM (M = K, Rb, Cs) by high-resolution powder X-ray diffraction. The compounds, which are of interest for reactions of the Kolbe−Schmitt type, are isostructural. The crystal structures are orthorhombic, space group Pna21, Z = 12, with lattice parameters (a, b, c in Å) 14.1003(1), 17.9121(1), and 7.16475(1) for the K compound, 14.4166(2), 18.2028(2), and 7.4009(1) for the Rb compound, and 14.8448(2), 18.5070(2), and 7.6306(1) for the Cs compound. They have a chain structure M6] ] along the crystallographic c axis. This is a very unusual arrangement in which two different alkali-metal coordination spheres are observed: a distorted octahedron and a 3-fold oxygen coordination. In the latter, the 3-fold-coordinated unsaturated alkali metals additionally show weak interactions with phenyl rings. We also give powder patterns for the compounds with M = Li, Na. The former crystallizes in the monoclinic space group P21/a with lattice parameters a = 22.594 Å, b = 4.7459 Å, c = 10.053 Å, and β = 97.82° with Z = 8, but no structure solution was possible. The powder pattern for the Na phenolate is in agreement with the earlier single-crystal structure.
Weitere Angaben
| Publikationsform: | Artikel in einer Zeitschrift |
|---|---|
| Begutachteter Beitrag: | Ja |
| Zusätzliche Informationen: | PMID: 11670012 |
| Institutionen der Universität: | Fakultäten > Fakultät für Mathematik, Physik und Informatik > Fachgruppe Materialwissenschaften > Lehrstuhl Kristallographie Fakultäten Fakultäten > Fakultät für Mathematik, Physik und Informatik Fakultäten > Fakultät für Mathematik, Physik und Informatik > Fachgruppe Materialwissenschaften |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 500 Naturwissenschaften und Mathematik > 530 Physik |
| Eingestellt am: | 14 Jun 2016 12:36 |
| Letzte Änderung: | 14 Jun 2016 12:36 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/32677 |