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Structure Topology in Silver(I)‐(poly)chalcogenide Halides: A Helpful Tool to Understand Structure Relations and Properties
Author(s) -
Nilges Tom,
Bawohl Melanie,
Messel Julia,
Osters Oliver
Publication year - 2010
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200900425
Subject(s) - chalcogenide , halide , topology (electrical circuits) , materials science , sequence (biology) , simple (philosophy) , crystal structure , ion , nanotechnology , chemical physics , chemistry , crystallography , mathematics , inorganic chemistry , optoelectronics , organic chemistry , biochemistry , philosophy , epistemology , combinatorics
Abstract Recent progress in the field of silver(I)‐chalcogenide halides and silver(I)‐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.