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Jaworski Jan S. Bankiewicz Barbara Krygowski T. Marek Palusiak Marcin Stasyuk Olga A. Szatylowicz Halina 《Structural chemistry》2016,27(4):1279-1289
Structural Chemistry - Intermolecular interactions between molecules of protic solvents (water, methanol, formic acid, formamide, methylamine and ammonia) and monatomic ions (Li+, Na+, K+,... 相似文献
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Structural Chemistry - Stacking interactions play an important role in stabilizing DNA and RNA secondary structure. To select a computational level to study the stacking interactions, both energy... 相似文献
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Structural Chemistry - DNA and RNA base-pairs are the most important systems containing multiple hydrogen bonds. Characterizing the energy of individual intermolecular interactions in such systems... 相似文献
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Dr. Olga A. Stasyuk Prof. Dr. Miquel Solà Prof. Dr. Marcel Swart Prof. Dr. Célia Fonseca Guerra Prof. Dr. Tadeusz Marek Krygowski Prof. Dr. Halina Szatylowicz 《Chemphyschem》2020,21(18):2112-2126
For many years, non-covalently bonded complexes of nucleobases have attracted considerable interest. However, there is a lack of information about the nature of hydrogen bonding between nucleobases when the bonding is affected by metal coordination to one of the nucleobases, and how the individual hydrogen bonds and aromaticity of nucleobases respond to the presence of the metal cation. Here we report a DFT computational study of nucleobase pairs interacting with alkali metal cations. The metal cations contribute to the stabilization of the base pairs to varying degrees depending on their position. The energy decomposition analysis revealed that the nature of bonding between nucleobases does not change much upon metal coordination. The effect of the cations on individual hydrogen bonds were described by changes in VDD charges on frontier atoms, H-bond length, bond energy from NBO analysis, and the delocalization index from QTAIM calculations. The aromaticity changes were determined by a HOMA index. 相似文献
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Szatylowicz Halina Jezuita Anna Siodla Tomasz Varaksin Konstantin S. Ejsmont Krzysztof Shahamirian Mozhgan Krygowski Tadeusz M. 《Structural chemistry》2018,29(4):1201-1212
Structural Chemistry - Substituents effects in cyclic diene derivatives are studied using quantum chemical modeling and compared to the corresponding effects in aromatic (benzene) and fully... 相似文献
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Structural Chemistry - Numerous studies on nitro group properties are associated with its high electron-withdrawing ability, by means of both resonance and inductive effect. The substituent effect... 相似文献
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