V₁₈P₉C₂

Author(s)

Herbert Boller, Herta Silvia Effenberger

Abstract

V18 P9 C2 crystallizes in the orthorhombic space group Pmma with the lattice parameters a = 17.044(3), b = 3.2219(7), and c = 13.030(2) Å, Z = 2. The crystal structure is composed of 19 symmetry-independent atoms. The crystal structure is considered as a network formed by the transition metal atoms exhibiting cubic, trigonal prismatic, and octahedral voids centered by V, P, and C atoms, respectively. Vice versa, the V and P atoms form a three-dimensional network. The two CV6 octahedra are edge- and corner-connected to chains running parallel to [010]. The five unique P atoms are trigonal prismatically coordinated by V atoms with one to three faces capped again by a V atom. The V atoms have mainly cubic environments formed solely by V or by V and P atoms. V18 P9 C2 exhibits some structural relations to other compounds of the ternary system V-P-C as well as to other intermetallic phases. Despite the low carbon content, V18 P9 C2 is considered as a ternary compound rather than an interstitially stabilized (binary) phosphide in view of its special structural features. Carbide crystal chemistry Phosphide pnictide Ternary compound Topology V18P9C2.

Organisation(s)

Department of Mineralogy and Crystallography

External organisation(s)

Johannes Kepler Universität Linz

Journal

Zeitschrift für Naturforschung. Section B: A Journal of Chemical Sciences

Volume

71

Pages

521-526

No. of pages

6

ISSN

0932-0776

DOI

https://doi.org/10.1515/znb-2016-0012

Publication date

05-2016

Peer reviewed

Yes

Austrian Fields of Science 2012

104011 Materials chemistry, 105113 Crystallography

Keywords

ASJC Scopus subject areas

Chemistry(all)

Portal url

https://ucrisportal.univie.ac.at/en/publications/v18p9c2(4ab998c4-d4bd-47ad-816a-4c777e512571).html