نتایج جستجو برای: qtaim

تعداد نتایج: 368  

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2011

2014
Robin Chaudret Julia Contreras-Garcia Mickaël Delcey Olivier Parisel Weitao Yang Jean-Philip Piquemal

In this contribution, we propose a deeper understanding of the electronic effects affecting the nucleation of water around the Au+ and Hg2+ metal cations using quantum chemistry. To do so, and in order to go beyond usual energetical studies, we make extensive use of state of the art quantum interpretative techniques combining ELF/NCI/QTAIM/EDA computations to capture all ranges of interactions ...

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...

Zahra Sharafi

The X-ray charge density analysis of a hydroxynaphthoquinnne derivative was obtained by multipolar Hansen-Coppens formalism refinement through high resolution X-ray diffraction data at 100(1) K. The molecularproperties of the title compound resulted from the combined experimental and the quantum theory of atoms inmolecules (QTAIM) studies. The topological properties of the covalent bonds and of...

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: :Inorganic chemistry 2010
Ignacy Cukrowski Krishna K Govender

The log K(1) value of analytical quality was obtained for the NiNTPA complex using the density functional theory (DFT)-computed (at the B3LYP/6-311++G(d,p) level of theory in solvent, CPCM/UAKS) G(aq) values of the lowest-energy conformers of the ligands, nitrilotriacetic acid (NTA) and nitrilotri-3-propanoic acid (NTPA), and the Ni(II) complexes (NiNTA and NiNTPA). The described mathematical p...

Journal: :The journal of physical chemistry. A 2014
Ignacy Cukrowski Jurgens H de Lange Mariusz Mitoraj

In the present account factors determining the stability of ZnL, ZnL2, and ZnL3 complexes (L = bpy, 2,2′-bipyridyl) were characterized on the basis of various techniques: the quantum theory of atoms in molecules (QTAIM), energy decomposition schemes based on interacting quantum atoms (IQA), and extended transition state coupled with natural orbitals for chemical valence (ETS-NOCV). Finally, the...

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