On the crystal structure of the phase La5B2C6

Authors
Oeckler, O Bauer, J Mattausch, H Simon, A
Citation
O. Oeckler et al., On the crystal structure of the phase La5B2C6, Z ANORG A C, 627(4), 2001, pp. 779-788
Citations number
31
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
ISSN journal
00442313 → ACNP
Volume
627
Issue
4
Year of publication
2001
Pages
779 - 788
Database
ISI
SICI code
0044-2313(200103)627:4<779:OTCSOT>2.0.ZU;2-C
Abstract
A homogeneous sample of La5B2C6 annealed at 1000 degreesC was investigated by X-ray powder and single-crystal as well as electron diffraction. The cry stal structure was refined in space group P4/ncc (a = 8.590(1) Angstrom. b = 12.398(1) Angstrom, Z = 4, rho (calc) = 5.723 g/cm, rho (exp) = 5.70 g/cm ) allowing for anharmonic displacement parameters for the metal atoms. The structure contains twofold disordered CBCC units in bicapped tetragonal ant iprismatic coordination in contrast to C-2 and CBC units in earlier investi gations.