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Disorder determined by high-resolution powder diffraction : structure of pentamethylcyclopentadienyllithium

Title data

Dinnebier, Robert E. ; Schneider, Martin ; van Smaalen, Sander ; Olbrich, Falk ; Behrens, Ulrich:
Disorder determined by high-resolution powder diffraction : structure of pentamethylcyclopentadienyllithium.
In: Acta Crystallographica Section B. Vol. 55 (1999) . - pp. 35-44.
ISSN 2052-5206
DOI: https://doi.org/10.1107/S0108768198007009

Abstract in another language

The crystal structure of pentamethylcyclopentadienyllithium, [Li(C₁₀H₁₅)] (LiCp*), has been determined from a high-resolution powder pattern by modelling and the maximum entropy method (MEM). The compound crystallizes in space group R3m with lattice parameters a = b = 14.7711 (5), c = 3.82206 (6) Å and V = 722.19 (4) ų (Z = 3). LiCp* forms polymeric 'multidecker' chains along the c axis. The pentamethylcyclopentadienyl anions are coplanar with each other and show threefold rotational disorder. The MEM calculations did not only confirm the structural model and the type of disorder, but also discovered additional symmetry compared with the Rietveld analysis. This is the first solid-state structure of a Lewis-base-free alkali metal Cp* compound.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences > Chair Crystallography > Chair Crystallography - Univ.-Prof. Dr. Sander van Smaalen
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Group Material Sciences
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 10 Jun 2016 08:27
Last Modified: 10 Jun 2016 08:27
URI: https://eref.uni-bayreuth.de/id/eprint/32642