Über LaCo2P2 und andere Neue Verbindungen mit ThCr2Si2- und CaBe2Ge2-Struktur |
| |
Authors: | W. Jeitschko,U. Meisen,M. H. M ller,M. Reehuis |
| |
Affiliation: | W. Jeitschko,U. Meisen,M. H. Möller,M. Reehuis |
| |
Abstract: | On LaCo2P2 and Other New Compounds with ThCr2Si2- and CaBe2Ge2-Type Structure The compounds MCo2P2 (M = La, Ce, Pr, Nd, Sm, Th, U), MFe2P2 (M = La, Ce, U), and ThCo2As2 were prepared for the first time. Structure determinations from single crystal X-ray data of LaCo2P2 (R = 0.011; 325 F-values), CeCo2P2 (R = 0.023; 160 F), PrCo2P2 (R = 0.044; 441 F), LaFe2P2 (R = 0.024; 511 F), and CeFe2P2 (R = 0.016; 183 F) with 11 variable parameters each resulted in atomic positions within the range of the ThCr2Si2-type. The powder patterns of ThCo2P2, and ThCo2As2 show superstructure reflections indicating a CaBe2Ge2-type structure. The other compounds can be assigned to the ThCr2Si2-type. Chemical bonding of these can be rationalized by a simple band structure model where bonding transition metal – transition metal interactions are important. |
| |
Keywords: | |
|
|