Effect of acid on the quantum yield of photodissociation of 9-(4-azidophenyl)acridine

被引：0
作者：
M. F. Budyka
N. V. Biktimirova
T. N. Gavrishova
O. D. Laukhina
机构：
[1] Russian Academy of Sciences,Institute of Problems of Chemical Physics
来源：
Russian Chemical Bulletin | 2005年 / 54卷
关键词：
aromatic azide; photodissociation; quantum chemical calculations; acridine; photoreduction;
D O I：
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学科分类号：
摘要：
The quantum yield of photodissociation of 9-(4-azidophenyl)acridine (1) is equal to 0.82, and that of its protonated form 2 is 6.9·10−3. The observed quantum yield of the system can smoothly be controlled in these limits varying the acidity of the medium. According to quantum chemical data, reactivity difference between neutral azide 1 and cation 2 is caused by the fact that in the lowest singlet-excited state (S1) of azide 1 the antibonding σ*NN molecular orbital is occupied, while this orbital remains unoccupied in the excited state of cation 2.
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页码：2746 / 2751
页数：5
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