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Crystal structures of alpha and beta modifications of Mn as packing of tetrahedral helices extracted from a four-dimensional {3, 3, 5} polytopeстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
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Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 4 ноября 2020 г.
- Авторы: Talis Alexander, Everstov Ayal, Kraposhin Valentin
- Журнал: Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials
- Том: 76
- Номер: 5
- Год издания: 2020
- Издательство: International Union of Crystallography
- Местоположение издательства: United Kingdom
- Первая страница: 948
- Последняя страница: 954
- DOI: 10.1107/s2052520620011154
- Аннотация: The crystal structures of both α- and β-Mn modifications have been presented as packing of tetrahedral helices extracted from four-dimensional {3, 3, 5} polytope construction. Presentation of the β -Mn structure as a primitive cubic arrangement formed by double tetrahedral helices around a central tetrahedral Coxeter–Boerdijk helix (tetrahelix) enables the inclusion in the structure description not only all atoms but also all tetrahedra; these tetrahedra are not accounted for in the preceding models for the β -Mn structure. The tetrahelix periodicity arising by minimal deformations of tetrahedra edges is equal to eight tetrahedra and coinciding with the lattice periods of both modifications. The linear substructure of α -Mn crystal consists of four tetrahelices which join to each other by edges around the common twofold axis. The α –Mn structure has been presented as primitive cubic arrangement constructed from such rods.
- Добавил в систему: Талис Александр Леонидович
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