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Volkova Tatyana V. Domanina Ekaterina N. Chislov Mikhail V. Proshin Alexey N. Terekhova Irina V. 《Journal of Thermal Analysis and Calorimetry》2020,140(5):2305-2315
Journal of Thermal Analysis and Calorimetry - The derivative of 1,2,4-thiadiazole (TDZ) can be considered as a perspective agent for the Alzheimer’s disease prevention. Due to a highly... 相似文献
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S. G. Pukhovskaya Dao Tkhe Nam Chan Ding Fien E. N. Domanina Yu. B. Ivanova A. S. Semeikin 《Russian Journal of Physical Chemistry A, Focus on Chemistry》2017,91(9):1692-1702
Acid–base and coordination properties of alkyl and aryl meso-substituted porphyrins are studied spectrophotometrically in nonaqueous solutions. It is found that the nature of the substituent greatly affects the basicity of ligands for porphyrins characterized by a flat structure of macrocycle. The electronic effects of substituents have a much weaker influence on the kinetics of complexing. These effects could be due to the opposite orientation of some factors: an increase in the basicity and stability of the N–H bonds of porphyrin reaction centers. Dissociation constants pK b of the cationic forms of meso-substituted derivatives of porphyrin are measured. The values of pK b are in good agreement with classic concepts of the nature of substituents, particularly those indirectly included in the macrocycle through phenyl buffer rings. 相似文献
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