DOMINANT ROLE OF HEAVY CATIONS IN THE CRYSTAL DYNAMICS OF A NUMBER OF ORTHOBORATES

• Published in: Journal of structural chemistry Vol. 63; no. 3; pp. 423 - 431
• Main Authors: Borisov, S. V., Magarill, S. A., Pervukhina, N. V.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-03-2022; Springer Nature B.V
• Subjects: Atomic; Atomic/Molecular Structure and Spectra; Cations; Chemistry; Chemistry and Materials Science; Crystal structure; Crystallography; Dynamic structural analysis; Inorganic Chemistry; Molecular; Optical and Plasma Physics; Physical Chemistry; Solid State Physics; Symmetry; B; crystallographic analysis; anionic and cationic sublattices; Bi; dynamics of crystal formation; Lu; ); symmetry – stability; BO; Ba; O; Sr
• ISSN: 0022-4766; 1573-8779
• DOI: 10.1134/S0022476622030088

Results of the crystallographic analysis of monoclinic Lu
5
Ba
6
B
9
O
27
 = Lu
5
Ba
6
(BO
3
)
9
(
I
) and orthorhombic Sr
3
Bi
2
(BO
3
)
4
(
II
) orthoborate structures are discussed in terms of crystal dynamics (mechanical and energetic processes underlying the formation of translational and point symmetries). The templates in both cases are massive and crystallochemically active cations (Lu, Bi) localized, together with their anionic environments, at fixed symmetry-determined sites. The centers of BO
3
groups are partially included in the sublattice of heavy cations, and their relative orientation complies with the local symmetry of the templates.