Photo-induced Dissociation of the N1–H Bond in the Imino Tautomers of Isocytosine in Water Medium

IF 0.7 4区 化学 Q4 CHEMISTRY, MULTIDISCIPLINARY Croatica Chemica Acta Pub Date : 2020-10-11 DOI:10.5562/cca3659
B. H. Dimitrov, V. Delchev
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引用次数: 1

Abstract

The imino tautomers of isocytosine were objects of investigation at the TD-DFT level of theory TD BLYP/6-311++G(d,p). We studied the mechanisms of the H1-N detachment in these tautomers through excited-state reaction paths. It was proposed that these transformations occur through the 1πσ* excited-state reaction paths of the imino tautomers. The mechanisms involve dissociations of the N1–H bonds in the tautomers and lead to crossings between the reaction paths of 1πσ* and S0 electronic states. One can suppose that such processes would facilitate the tautomerizations of the imino tautomers if further mechanisms have been found.
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水介质中异胞嘧啶亚胺互变异构体中N1–H键的光诱导解离
异胞嘧啶的亚胺互变异构体是TD BLYP/6-311++G(d,p)理论的TD-DFT水平上的研究对象。我们通过激发态反应路径研究了这些互变异构体中H1-N分离的机制。提出这些转化是通过亚胺互变异构体的1πσ*激发态反应路径发生的。该机制涉及互变异构体中N1–H键的解离,并导致1πσ*和S0电子态的反应路径之间的交叉。人们可以假设,如果已经发现进一步的机制,这样的过程将促进亚胺互变异构体的互变异构化。
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来源期刊
Croatica Chemica Acta
Croatica Chemica Acta 化学-化学综合
CiteScore
0.60
自引率
0.00%
发文量
3
审稿时长
18 months
期刊介绍: Croatica Chemica Acta (Croat. Chem. Acta, CCA), is an international journal of the Croatian Chemical Society publishing scientific articles of general interest to chemistry.
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