Preparation and crystal structure of K2Ag12Te7

Autor(en)
Franz Pertlik
Abstrakt

Single crystals of K2Ag12Te7 (a = 11.460(2), c = 4.660(1) A°; V = 530.01 A°3; space group: P63/m; Z = 1) were synthesized under hydrothermal conditions at 250°C in concentrated aqueous KOH solution from elementary silver and tellurium. The crystal structure is characterized by trigonal prismatic KTe6 polyhedra, connected via two common faces to KTe3 rods parallel to [001]. These rods are combined by two crystallographically independent Ag atoms, each coordinated to four Te and three Ag atoms (Ag-Te and Ag-Ag <3.1 A°) to a framework of the formula (K2Ag12Te6)2+ and with channels parallel to the sixfold axis. These channels are statistically occupied by one further Te atom per unit cell, distributed over two independent positions.

Organisation(en)
Institut für Mineralogie und Kristallographie
Journal
Monatshefte für Chemie
Band
132
Seiten
1509-1513
Anzahl der Seiten
5
ISSN
0026-9247
Publikationsdatum
2001
Peer-reviewed
Ja
ÖFOS 2012
1051 Geologie, Mineralogie
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/preparation-and-crystal-structure-of-k2ag12te7(5c23424b-4d1b-40cd-9a4e-6b80f9dfa1fa).html