Premium
MIn 3 S 5 (M = Rb, Cs), a New Structure Type based on a Joint ccp Arrangement of S 2— and M + : Structure, Microstructure, and Twinning
Author(s) -
Deiseroth H. J.,
Reiner C.,
Schlosser M.,
Kienle L.
Publication year - 2002
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 - 10.1002/1521-3749(200207)628:7<1641::aid-zaac1641>3.0.co;2-d
Subject(s) - crystallography , octahedron , chemistry , alkali metal , crystal structure , structure type , chalcogen , crystal twinning , ternary operation , microstructure , organic chemistry , computer science , programming language
The compounds MIn 3 S 5 (M = Rb, Cs) represent new ternary chalcogenides on the quasi binary section M 2 S‐In 2 S 3 (M = Rb, Cs) with the two binary phases in a molar ratio of 1:3. RbIn 3 S 5 and CsIn 3 S 5 (both red‐transparent) crystallize in a new structure type (SG: P2/m, Z = 3). The indium atoms are coordinated by sulfur atoms with tetrahedral as well as octahedral arrangement, while the coordination numbers of the two crystallographically independent M atoms are nine and ten. A special feature of these solids is the slightly distorted joint ccp arrangement of the sulfur and alkali metal atoms. The crystals of both solids are characterized by a systematic twinning based on the peculiarity just mentioned. The twinnig law and the atomic arrangement at the twin interface have been investigated by single crystal X‐Ray diffraction and high resolution electron microscopy (HREM).