Structure topology in silver(I)-(poly)chalcogenide halides: a helpful tool to understand structure relations and properties

Tom Nilges, Melanie Bawohl, Julia Messel, Oliver Osters

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Recent progress in the field of silver(I)-chalcogenide halides and silver(1)-polychalcogenide halides led to the discovery of a reasonable number of new phases, solid solutions and even a new substance class of materials with favorable electronic and thermoelectric properties. Most of these new compounds are characterized by a pronounced ion mobility, polymorphism, and complex structures, which result in severe problems during the structure solution, the refinement, and even the description of the crystal structures. Herein we report on a very simple but effective building principle and a topological structure approach, which are both based on the separate description of anion substructures and the introduction of discrete building blocks. Such a topological principle helps to understand the complex structural relations and allows one to discuss all known chalcogenide and polychalcogenide halides in a continuous sequence of compounds. Following this principle it is possible to understand physical properties and to predict new phases in the system.

Original languageEnglish
Pages (from-to)15-18
Number of pages4
JournalZeitschrift fur Anorganische und Allgemeine Chemie
Volume636
Issue number1
DOIs
StatePublished - Jan 2010
Externally publishedYes

Keywords

  • Chalcogenide halides
  • Chalcogens
  • Ion mobility
  • Polychalcogenide halides
  • Silver
  • Structure topology

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