引用本文:
陈尔霆. 部分同谱分子[J]. 物理化学学报,
1987, 3(02): 192-196.
doi:
10.3866/PKU.WHXB19870214
Citation: Chen Erting. PARTLY ISOSPECTRAL MOLECULES[J]. Acta Physico-Chimica Sinica, 1987, 3(02): 192-196. doi: 10.3866/PKU.WHXB19870214
Citation: Chen Erting. PARTLY ISOSPECTRAL MOLECULES[J]. Acta Physico-Chimica Sinica, 1987, 3(02): 192-196. doi: 10.3866/PKU.WHXB19870214
部分同谱分子
摘要:
本文在HMO近似内讨论部分同谱分子。认为在一个没有对称面的分子中, 可能隐含着一个对称面。对称面将分子分成两部分。这两部分所表示的共轭体系是部分同谱分子。它们与整个分子也是部分同谱分子。文中讨论了三顶点链图, 这种链图表示了无数个部分同谱分子进行收缩的总结果, 同时用少数例子加以说明。
English
PARTLY ISOSPECTRAL MOLECULES
Abstract:
In this paper, properties of molecular graphs with partly identical topological spectra has been discussed in detail. The concept of pseudo-reflection plane has been described and illustrated by a few examples. The molecular graph G which does not contain the plane of symmetry is said to have a pseudo-reflection plane σ_p if there exists a symmetry plane in a deleting graph G_a′. The G is partitioned into two parts G_(A1)(σ_p), G_(A2)(σ_p) by the plane σ_p. The conjugated species G_(A1)(σ_p)、 G_(A2)(σ_p) are isospectral or partly isospectral molecules if the construction of G_(A1)(σ_p)、G_(A2)(σ_p) are not identical.
In this present article a straight chain containing three vertices has been studied. This graph stands for a general result result of the deletion of numerous partly isospectral molecules.
In this present article a straight chain containing three vertices has been studied. This graph stands for a general result result of the deletion of numerous partly isospectral molecules.
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