The Diamagnetic Sucseptibilities and Anisotropies of the Polynuclear Aromatic Compounds
The Diamagnetic Sucseptibilities and Anisotropies of the Polynuclear Aromatic Compounds
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多核芳香族化合物的抗磁化率和各向异性
DOI：
10.1246/bcsj.26.364
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发表时间：
1953
影响因子：
4
通讯作者：
Y. Matsunaga
中科院分区：
文献类型：
--
作者：
H. Akamatu;Y. Matsunaga
通过倍数测量了具有较高分子量（十个碳氢化合物和十二个奎因酮）的凝结的多核芳族化合物的磁敏感性，并且随着垂直动态的逐渐升高，并且磁管障碍的数量已逐渐增加。芳香的凝结以紧凑的环的方式进行，而当不是这种情况下，当二氧化体的偏见较小时，它取决于分子结构。必须假设π电源的定位或其他激发态的位置。萘二烯和紫罗兰，或者当分子由长形结构制成时，如吡咯或紫罗兰酮。
The magnetic susceptibilities of condensed polynuclear aromatic compounds with higher molecular weights (ten hydrocarbons and twelve quinones) have been measured by the Gouy method, and the diamagnetic anisotropies have been approximately evaluated. The diamagnetic anisotropy becomes progressively large as the number of rings increases, when the aromatic condensation takes place in the manner of the closely compact arrangement of rings; while, when it is not the case, it depends strikingly upon the molecular structure. When the diamagnetic anisotropy has a smaller value, notwithstanding the molecule is made of a large number of rings, the localization of the π-electrons or some other excited states must be assumed. Such a case is found, when a molecule is not made of the aromatically conjugated system as a whole but separated into two predominant nuclei, as meso-naphthodianthrene and violanthrone, or when a molecule is made of a long shaped structure as pyranthrene or violanthrene.