Single-crystal structure determination of two new ternary bismuthides: Rh6Mn₅Bi₁₈ and RhMnBi₃

Autor(en)

Peter Kainzbauer, Klaus Richter, Herta Silvia Effenberger, Martin C. J. Marker, Herbert Ipser

Abstrakt

A study of the ternary Rh-Mn-Bi phase diagram revealed the existence of two new ternary bismuthides, viz. hexarhodium pentamanganese octadecabismuthide (Rh6Mn5Bi18) and rhodium manganese tribismuthide (RhMnBi3). Their crystal structures represent new structure types. Rh6Mn5Bi18, with a Wyckoff sequence a f2 g2 i5, crystallizes in the tetragonal system (space group P42/mnm; Pearson symbol tP58), and RhMnBi3, with a Wyckoff sequence a c g i q, crystallizes in the orthorhombic system (Cmmm; oS20). In the Rh6Mn5Bi18 structure, the transition metal atoms are linked into ribbon-like structural units aligned along the [001] direction, whereas planar sheets are formed in RhMnBi3. In both crystal structures, the units formed by the transition metal atoms are enveloped by Bi atoms, which themselves form a loosely bound network. The linkage results in a layer structure for RhMnBi3, while in the case of Rh6Mn5Bi18, a three-dimensional network is formed; the latter, however, contains several areas where Bi Bi distances suggest van der Waals interactions. Both phases under discussion have analogous structural motifs.

Organisation(en)

Institut für Funktionelle Materialien und Katalyse, Institut für Mineralogie und Kristallographie

Journal

Acta Crystallographica. Section C: Structural Chemistry

Band

C74

Seiten

863-869

Anzahl der Seiten

7

ISSN

0108-2701

DOI

https://doi.org/10.1107/S2053229618009087

Publikationsdatum

06-2018

Peer-reviewed

Ja

ÖFOS 2012

104003 Anorganische Chemie, 104011 Materialchemie, 105113 Kristallographie

Schlagwörter

ASJC Scopus Sachgebiete

Condensed Matter Physics, Materials Chemistry, Inorganic Chemistry, Physical and Theoretical Chemistry

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/a5dd527c-0dc1-41a1-86cb-c594c76b7789