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

Author(s)

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

Abstract

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(s)

Department of Functional Materials and Catalysis, Department of Mineralogy and Crystallography

Journal

Acta Crystallographica. Section C: Structural Chemistry

Volume

C74

Pages

863-869

No. of pages

7

ISSN

0108-2701

DOI

https://doi.org/10.1107/S2053229618009087

Publication date

06-2018

Peer reviewed

Yes

Austrian Fields of Science 2012

104003 Inorganic chemistry, 104011 Materials chemistry, 105113 Crystallography

Keywords

ASJC Scopus subject areas

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

Portal url

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