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Topoligical Rotational Strength as Chirality Descriptors for Fullerenes

机译:拓扑旋转强度作为富勒烯的手性指标

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摘要

A graph-theoretical procedure is proposed for assigning a chirality descriptor (the topoligical spin tau(+) or tau(-)) to each enantiomer of a chiral polyhedron, polyhedral molecule or graph, independently of any vertex labelling scheme. Model Cartesian coordinates and rotational strengths are obtained using only adjacency inforamtion; a genrealised HOMO - LUMO rotational strength is used to associate a sign with a Schlegel diagram and the corresponding three-dimensional structure, polyhedron or molecule. The topological sign gives an unambiguous way of communicating the identify of an enantiomer. The mean-square topological rotational strength is a possible measures of the chirality content of a polyhedral graph or structure.
机译:提出了一种图形理论方法,用于将手性描述符(政治自旋tau(+)或tau(-))分配给手性多面体,多面体分子或图的每个对映体,而与任何顶点标记方案无关。仅使用邻接信息即可获得模型直角坐标和旋转强度。通用的HOMO-LUMO旋转强度用于将符号与Schlegel图以及相应的三维结构(多面体或分子)相关联。拓扑标志给出了明确表达对映异构体标识的明确方式。均方拓扑旋转强度是多面体图或结构的手性含量的可能度量。

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