Original scientific paper

Classification of Topological Isomers: Knots, Links, Rotaxanes, etc.

Jan Cz. Dobrowolski ; National Institute of Public Health, 30–34, Chełmska Street, 00–725 Warsaw, Poland

Abstract

Topological isomers, i.e., knots, catenanes, rotaxanes, pseudoknots, hook-and-ladder, and Möbius molecules have so far been left out from the isomer classification schemes discussed. To expand the classification schemes to include the topological molecules such as knots and links, questions about the number of components and the number of crossings are incorporated into the scheme. In the case of rotaxanes and pseudoknots, which are topologically trivial, a procedure making them not trivial is described. For the hook-and-ladder as the well as Möbius type of isomers, a procedure is given that allows their classification. All the new procedures are included into the new classification scheme in such a way that all questions about topology precede the ordinary question tree. In that way, a molecule is first classified as a topological object, and then classical questions about its structure are asked.

Keywords

catenanes; hook-and-ladder; isomer classification; knots; Moebius pseudoknots; rotaxanes; topological isomerism

Hrčak ID:

103090

URI

https://hrcak.srce.hr/103090

Publication date:

30.6.2003.

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