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COMPARATIVE CRYSTAL CHEMISTRY, SYMMETRY FEATURES, AND STRUCTURAL COMPLEXITY OF LiOH, NaOH, RbOH, CsOH, AND TlOH HYDROXIDES
We consider the structural features and symmetry of alkali metal (Li, Na, K, Rb, Cs) and thallium hydroxides crystallizing in LiOH, α-NaOH, β-NaOH, TlOH structure types. The complexities of crystal structures are calculated. The structure of these compounds is based on the alternation of dense layer...
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Published in: | Journal of structural chemistry 2022-12, Vol.63 (12), p.2054-2067 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | We consider the structural features and symmetry of alkali metal (Li, Na, K, Rb, Cs) and thallium hydroxides crystallizing in LiOH, α-NaOH, β-NaOH, TlOH structure types. The complexities of crystal structures are calculated. The structure of these compounds is based on the alternation of dense layers with strong metal–oxygen bonds and the interlayer space. The common features of hydroxide structures is the location of atoms at square network nodes. Atoms are bound the networks by both true symmetry elements of space groups and additional pseudo-symmetry elements, which indicates the order-disorder (OD) character of hydroxide structures. The arrangement of atoms by the square network pattern allows the consideration of these compounds as a uniform group whose structures retain the tetragonal character of the initial LiOH structure, which is expressed in the similarity of horizontal parameters of their unit cells. |
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ISSN: | 0022-4766 1573-8779 |
DOI: | 10.1134/S0022476622120174 |