TWO GROUPS OF COMPOUNDS WITH LARGE POROUS SUPERFRAMEWORKS BASED ON ANION-CENTERED [OT4] TETRAHEDRAAND THE FEATURES OF THEIR EXTRAFRAMEWORK SUBSYSTEMS

Two groups of compounds with the tetrahedral differently charged { ( \textrm T O 4 ) 6 [ \textrm T 4 s \textrm O ] 2 } n + superframework and different extraframework compensatory subsystems are presented. The first group is characterized by a constant composition of the framework with the same topo...

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Veröffentlicht in:Journal of structural chemistry 2020-07, Vol.61 (7), p.1072-1079
Hauptverfasser: Bakakin, V V, Seryotkin, Yu V
Format: Artikel
Sprache:eng
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Zusammenfassung:Two groups of compounds with the tetrahedral differently charged { ( \textrm T O 4 ) 6 [ \textrm T 4 s \textrm O ] 2 } n + superframework and different extraframework compensatory subsystems are presented. The first group is characterized by a constant composition of the framework with the same topology and extraframework water-cation associates of the zeolite type with different compositions and configurations. Due to a low charge of the framework, the space of its large voids, along with monovalent cations, is forcedly occupied by neutral H 2 O molecules. In the second group, the composition and topology of a highly charged framework are variable, with a stable three-dimensional network of large extraframework cations. The effect of the framework charge on the features of its configuration is considered.
ISSN:0022-4766
1573-8779
DOI:10.1134/S0022476620070094