Abstract

The state of tetra(1,2,5-selenodiazolo)porphyrazine in proton-acceptor media of different basicities is studied. It is shown that porphyrazine with selenodiazole rings forms a proton-stable complex with proton transfer in dimethylsulfoxide. Addition of nitrogen-containing bases into dimethylsulfoxide destabilizes this complex, with subsequent destruction of the porphyrazine macrocycle. It is found that the kinetic parameters of the process depend on the pK_a values of the base, and on the spatial screening of the nitrogen atom in the composition of the molecule.

中文翻译：

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质子-受体介质中四（1,2,5-硒代二氮杂）卟啉的破坏动力学特征

摘要

研究了不同碱性的质子受体介质中四（1,2,5-硒代二氮杂）卟啉的状态。结果表明，带有硒代二唑环的卟啉形成了质子稳定的配合物，质子在二甲亚砜中转移。在二甲亚砜中添加含氮碱会破坏该配合物的稳定性，并随后破坏卟啉大环化合物。发现该过程的动力学参数取决于碱基的p K _a值，并且取决于分子组成中氮原子的空间筛选。