Cu7Bi6S10Cl5 – Mobile Copper(I) Cations Inside Dendritic Channels of a Rigid Framework
Résumé
The melting reaction of Cu, CuCl, S, and Bi2S3 yields black, shiny needles of the sulfide chloride Cu7Bi6S10Cl5. The compound decomposes peritectically above 639(5) K. Cu-K-XANES data confirm the oxidation state +I of Cu. Cu7Bi6S10Cl5 crystallizes in the monoclinic space group C2/m with a = 2878.3(9) pm, b = 396.59(9) pm, c = 1156.5(4) pm, and β = 111.55(3) ° at T = 293(2) K. Three S and four Cl anions coordinate each of the three independent Bi cations in the shape of mono-capped trigonal prisms. The [BiS3Cl4] polyhedra share edges and faces resulting in furrowed layers parallel (-201). Localized as well as disordered Cu cations occupy trigonal or tetrahedral voids in the packing of anions. The Joint Probability Density Function (JPDF) reveals branched and unbranched continuous pathways along [010], which are available for cation conduction.
Origine : Fichiers produits par l'(les) auteur(s)
Loading...