周期波罗米安环，杆和链。

IF 1.9 4区材料科学 Q3 CHEMISTRY, MULTIDISCIPLINARY

Acta Crystallographica Section A: Foundations and Advances Pub Date : 2024-01-01 DOI:10.1107/S2053273323009269

Michael O'Keeffe, Michael M J Treacy

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引用次数: 0

摘要

这篇文章描述了由没有两个直接连接的互锁环构建的周期性聚连环烷结构。详细描述了六边形Borromean环的2周期顶点族、边族和环族传递，并说明了它们是如何产生1周期和3周期环传递(等单)族的。我们还发现了另一个等边的2周期族，这是一个独特的3周期的等边三角形博罗米安集合。此外，还报道了一种值得注意的2周期结构，包括链链相连的环，其中链被锁定在适当的位置，但没有两个链是直接相互连接的，被固定在适当的位置，作为一种新的“准博罗米恩”，由四个重复的成分组成。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Periodic Borromean rings, rods and chains.

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Periodic Borromean rings, rods and chains.

This article describes periodic polycatenane structures built from interlocked rings in which no two are directly linked. The 2-periodic vertex-, edge- and ring-transitive families of hexagonal Borromean rings are described in detail, and it is shown how these give rise to 1- and 3-periodic ring-transitive (isonemal) families. A second isonemal 2-periodic family is identified, as is a unique 3-periodic Borromean assembly of equilateral triangles. Also reported is a notable 2-periodic structure comprising chains of linked rings in which the chains are locked in place but no two chains are directly interlinked, being held in place as a novel `quasi-Borromean' set of four repeating components.

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来源期刊

Acta Crystallographica Section A: Foundations and Advances CHEMISTRY, MULTIDISCIPLINARYCRYSTALLOGRAPH-CRYSTALLOGRAPHY

CiteScore

2.60

自引率

11.10%

发文量

419

期刊介绍： Acta Crystallographica Section A: Foundations and Advances publishes articles reporting advances in the theory and practice of all areas of crystallography in the broadest sense. As well as traditional crystallography, this includes nanocrystals, metacrystals, amorphous materials, quasicrystals, synchrotron and XFEL studies, coherent scattering, diffraction imaging, time-resolved studies and the structure of strain and defects in materials. The journal has two parts, a rapid-publication Advances section and the traditional Foundations section. Articles for the Advances section are of particularly high value and impact. They receive expedited treatment and may be highlighted by an accompanying scientific commentary article and a press release. Further details are given in the November 2013 Editorial. The central themes of the journal are, on the one hand, experimental and theoretical studies of the properties and arrangements of atoms, ions and molecules in condensed matter, periodic, quasiperiodic or amorphous, ideal or real, and, on the other, the theoretical and experimental aspects of the various methods to determine these properties and arrangements.