نتایج جستجو برای: qtaim analysis

تعداد نتایج: 2824313  

Journal: :journal of physical & theoretical chemistry 2009
gholarn hossein shafiee seyed abdolreza sadjadi jamshid najafpour hadi shafice

it seems that the general applicability of the quantum theory of atoms in molecules (qtaim) oncharacterizing the bonded interactions is still questionable even afier 30 years since its formulation. fordemonstrating the generality of bonding schemes in qta im, ea( isomers were chosen as the modelsystems and the results from molecular charge density analysis and vibrational normal modes werecompa...

Journal: :Physical chemistry chemical physics : PCCP 2012
Tymofii Yu Nikolaienko Leonid A Bulavin Dmytro M Hovorun

Physical properties of over 8000 intramolecular hydrogen bonds (iHBs), including 2901 ones of the types OH···O, OH···N, NH···O and OH···C, in 4244 conformers of the DNA-related molecules (four canonical 2'-deoxyribonucleotides, 1,2-dideoxyribose-5-phosphate, and 2-deoxy-D-ribose in its furanose, pyranose and linear forms) have been investigated using quantum theory of atoms in molecules (QTAIM)...

Journal: :International journal of molecular sciences 2016
Jiguang Du Xiyuan Sun Gang Jiang

The interaction natures between Pu and different ligands in several plutonyl (VI) complexes are investigated by performing topological analyses of electron density. The geometrical structures in both gaseous and aqueous phases are obtained with B3LYP functional, and are generally in agreement with available theoretical and experimental results when combined with all-electron segmented all-elect...

Journal: :European Journal of Chemistry 2021

The adsorption energy of the BMSF-BENZ adsorbed complexes was investigated to understand non-local dispersion interactions, with many other chemical parameters related this subject like HOMO and LUMO, gap, time needed for be desorbed from nanotube (recovery time). Our study reveals that Al-CNT is a promising adsorbent drug as Eads BMSF-BENZ/Al-CNT are -22.09, -38.68, -12.89, -31.01, -27.31, -21...

Journal: :Chemical Society reviews 2015
Patricia A Hunt Claire R Ashworth Richard P Matthews

Ionic liquids (IL) and hydrogen bonding (H-bonding) are two diverse fields for which there is a developing recognition of significant overlap. Doubly ionic H-bonds occur when a H-bond forms between a cation and anion, and are a key feature of ILs. Doubly ionic H-bonds represent a wide area of H-bonding which has yet to be fully recognised, characterised or explored. H-bonds in ILs (both protic ...

Journal: :Dalton transactions 2016
Daniel M E van Niekerk Wilhelmus J Gerber Klaus R Koch

The Os(VIII) oxo/hydroxido complexes that are abundant in mild to relatively concentrated basic aqueous solutions are Os(VIII)O4, [Os(VIII)O4(OH)](-) and two cis-[Os(VIII)O4(OH)2](2-) species. Os(VIII) complexes that contain water ligands are thermodynamically unfavoured w.r.t. the abovementioned species. Os(VIII)O4 reacts with hydroxide in two, consecutive, elementary coordination sphere expan...

Gholarn Hossein Shafiee Hadi Shafice Jamshid Najafpour Seyed Abdolreza Sadjadi

It seems that the general applicability of the quantum theory of atoms in molecules (QTAIM) oncharacterizing the bonded interactions is still questionable even afier 30 years since its formulation. Fordemonstrating the generality of bonding schemes in QTA IM, ea( isomers were chosen as the modelsystems and the results from molecular charge density analysis and vibrational normal modes werecompa...

Journal: :The Journal of chemical physics 2010
Zhen Zhao David M Rogers Thomas L Beck

A theoretical study of the structural and electronic properties of the chloride ion and water molecules in the first hydration shell is presented. The calculations are performed on an ensemble of configurations obtained from molecular dynamics simulations of a single chloride ion in bulk water. The simulations utilize the polarizable AMOEBA force field for trajectory generation and MP2-level ca...

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