THE COLOUR OF ORGANIC COMPOUNDS .1. A GENERAL COLOUR RULE
THE COLOUR OF ORGANIC COMPOUNDS .1. A GENERAL COLOUR RULE
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DOI：
10.1039/jr9510001024
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发表时间：
1951-01-01
期刊：
影响因子：
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通讯作者：
KNOTT, EB
中科院分区：
文献类型：
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作者：
KNOTT, EB
(J. Amer. Chem. SOL, 1945, 67, 770) 是唯一被应用于预测位于助色团之间的分子中一点的结构变化对染料光吸收的影响的规则。*这些规则在许多情况下被发现是不可靠的（见下文），因为它们忽略了变化点相对于末端 &M 原子的位置，也因为它们假设，在对于离子染料，发色链的每个原子必须带有与特征电荷相同符号的分数电荷。此外，根据它们的定义，它们不能应用于非离子（电中性）分子。 Brooker（与 Sklar，Rev.Mod.Physics，1942,14,279）也发展了一条规则，可以想象它可以应用于这种结构变化。从来没有过
(J. Amer. Chem. SOL, 1945, 67, 770) are the only ones which have been applied to predict the effect, on the light absorption of a dye, of a structural change at a point in the molecule lying between the auxochromes.* These rules have been found to be unreliable in a number of cases (see later) because they neglect the position of the point of the change in relation to the terminal &M atoms and also because they assume that, in an ionic dye, each atom of the chromophoric chain must carry a fractional charge of the same sign as that of the characteristic charge. Moreover, by their definition, they cannot be applied to non-ionic (electrically neutral) molecules. Brooker (with Sklar, Rev. Mod. Physics, 1942, 14, 279) also evolved a rule which might conceivably be applied to such structural changes. It has never been