Local and permeating disorder of copper(I) cations in Cu 3BiS2Br2 and Cu4Bi3S 5Br3-xClx (x = 1.19)

Publikation: Beitrag in FachzeitschriftForschungsartikelBeigetragenBegutachtung

Beitragende

Abstract

Melting reactions of Bi2S3, CuX (X = Cl, Br), copper, and sulfur resulted in black needles of qua- and quinternary copper bismuth sulfide halogenides. Cu3BiS2Br2 (I) has a melting point of 638(5) K and crystallizes in the orthorhombic space group Pnma with a = 804.50(6) pm, b = 393.27(3) pm, and c = 2253.2(2) pm at T = 293(2) K. Cu4Bi3S5Br3-xClx (x = 1.19(2)) (II) crystallizes in the monoclinic space group I2/m with lattice parameters a = 1573.7(2) pm, b = 397.52(3) pm, c = 2164.9(3) pm, and β = 95.66(1) °. Both compounds exhibit networks of thio-halogenido- bismuthate(III) polyhedra that join corners, edges, and faces. The copper(I) cations are spread over numerous contiguous trigonal or tetrahedral voids. In case of (II) a continuous pathway for copper ion transport along [010] is formed. The pseudo-potential barrier for hopping of copper ions was calculated as 30 meV only.

Details

OriginalspracheEnglisch
Seiten (von - bis)62-66
Seitenumfang5
FachzeitschriftZeitschrift fur Anorganische und Allgemeine Chemie
Jahrgang637
Ausgabenummer1
PublikationsstatusVeröffentlicht - Jan. 2011
Peer-Review-StatusJa

Externe IDs

ORCID /0000-0002-2391-6025/work/166325832

Schlagworte

ASJC Scopus Sachgebiete

Schlagwörter

  • Bismuth, Copper, Disorder, Ion mobility, Ionic conductors (one-dimensional)