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本文讨论了23个共轭多炔链物系列中电子吸收光谱的同系线性规律。在具有非共轭端基或单共轭端基的炔链物中(L-1至L-8),同系线性规律与近似线性叠合规律[式(2)与式(3)]的关联情况都很良好,并且与多烯链物完全一致。但是在具有两个共轭端基的炔链物中(L-9至L-23),需将同系序数加以校正(校正的同系序数N′=(1/2)N+4),才能保持良好的同系线性关系。在这一类中,β值的递变情况与烯链物不同,而与骈苯链物一致。文中比较了两类炔链物系列在N,t和β值等方面所表现的特征,并讨论了这两类化合物中电子光谱所依存的结构因素的差异。根据同系直线的特征及其间的相互关系,文中将一些系列的各次吸收峰进行了分组分次,并改正了文献中一些不恰当的分类。各系列的邻同系蜂及次同系蜂所表现的良好近似线性叠合关系以及恒定的β值表明,同系线性规律是多次吸收峰分类的一个合理的定量基础。
In this paper, we discuss the homology regularity of electron absorption spectra in 23 conjugated polyalkyne chains. (L-1 to L-8) in the alkyne chains (L-1 to L-8) having a non-conjugating end group or a single conjugate end group, the relation between the homology linear law and the approximate linear superposition rule [formula (2) and formula (3)] The conditions are good and are exactly the same as polyene chains. However, in the alkyne chain with two conjugated end groups (L-9 to L-23), the same ordinal number needs to be corrected (the corrected ordinal number N ’= (1/2) N + 4) Good homosexual linear relationship. In this category, the value of β is not the same as that of the alkene but the same as that of the benzene. In this paper, the characteristics of two kinds of alkyne series in N, t and β values are compared. The differences of the structural factors in the electronic spectra of the two kinds of compounds are also discussed. According to the characteristics of homologous lines and their interrelationship, some series of absorption peaks are divided into groups and corrected some inappropriate categories in the literature. The good linear approximation and the constant β values of the adjacent homosexual and homosexual bees in each series show that the homology linear rule is a reasonable quantitative basis for multiple absorption peak classification.