Crystallographic Analysis of the Genesis of the Structure Symmetry of Acid Sulfates M 3 H(SO 4 ) 2 (M = K, NH 4 )

S. V. Borisov, N. V. Pervukhina, S. A. Magarill

Результат исследования: Научные публикации в периодических изданияхстатья

Аннотация

The crystallographic analysis of five compositionally similar structures shows that the R3 ¯ -symmetrical trigonal structure and two monoclinic (C2/c) structures with the ratio M:S = 3:2 that is the same for all three have identical cation sublattices and similar real configurations of atomic positions. Two structures with M:S = 9:8, with the orthorhombic symmetry (Pcan) and with its monoclinic distortion (P2 1 /c), have identical cation sublattices. In the first group of the structures the symmetry and pseudosymmetry are determined by the SO 4 template symmetry, namely, axis 3. In the second group the symmetry of cation frameworks and structures in general is partially formed by three mutually perpendicular axes 4 ¯ of the SO 4 tetrahedra.

Язык оригиналаанглийский
Страницы (с-по)602-608
Число страниц7
ЖурналJournal of Structural Chemistry
Том60
Номер выпуска4
DOI
СостояниеОпубликовано - 1 апр 2019

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