SN Ar reactions of substituted pyridines with secondary amines in aqueous solution: Kinetic and reactivity indices in density functional theory

2019 ◽  
Vol 51 (4) ◽  
pp. 249-257 ◽  
Author(s):  
Faouzi Mahdhaoui ◽  
Rania Zaier ◽  
Nejeh Dhahri ◽  
Sahbi Ayachi ◽  
Taoufik Boubaker
Keyword(s):  
Aqueous Solution ◽  
Density Functional Theory ◽  
Density Functional ◽  
Secondary Amines ◽  
Functional Theory ◽  
Reactivity Indices ◽  
Substituted Pyridines ◽  
Solution Kinetic

Density Functional Theory Study of Uranium(VI) Aquo Chloro Complexes in Aqueous Solution

2008 ◽  
Vol 112 (11) ◽  
pp. 2428-2436 ◽  
Author(s):  
Michael Bühl ◽  
Nicolas Sieffert ◽  
Volodymyr Golubnychiy ◽  
Georges Wipff
Keyword(s):  
Aqueous Solution ◽  
Density Functional Theory ◽  
Density Functional ◽  
Density Functional Theory Study ◽  
Functional Theory ◽  
Chloro Complexes

scholarly journals Supramolecular Complexes of Cucurbiturils with Second Group Metal Salts and Hydrates and Histamine

INEOS OPEN ◽  
2021 ◽  
Vol 4 ◽  
Author(s):  
Yu. A. Borisov ◽  
◽  
S. S. Kiselev ◽  
Keyword(s):  
Aqueous Solution ◽  
Density Functional Theory ◽  
Density Functional ◽  
Metal Salts ◽  
Supramolecular Complexes ◽  
Water Molecules ◽  
Functional Theory ◽  
Guest Molecules ◽  
First Time ◽  
Formation Energies

The interaction of cucurbiturils (Q6, Q7, and Q8) with Ca and Ba chlorides and iodides are studied for the first time by density functional theory. The thermodynamic parameters for the formation of host–guest complexes are calculated. The structures of complexes of Q6 and Q7 with one and two guest molecules are established. The energy parameters for the transfer of Be2+ and Ba2+ cations from an aqueous solution into the cavity of Q7 containing n water molecules are defined. The dependences of the formation energies for complexes Q7WnBe2+ and Q7WnBa2+ on the number of water molecules are shown to be parabolic, with the energy minima at n = 5 and n = 6, respectively. It is found that Q7 can form in an aqueous solution supramolecular complexes with protonated histamine (HA) and neutral histamine in the presence of Ca2+ ions.

scholarly journals Anticancer Indole-Based Chalcones: A Structural and Theoretical Analysis

Molecules ◽  
2019 ◽  
Vol 24 (20) ◽  
pp. 3728 ◽  
Author(s):  
Farid A. Badria ◽  
Saied M. Soliman ◽  
Saleh Atef ◽  
Mohammad Shahidul Islam ◽  
Abdullah Mohammed Al-Majid ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Theoretical Analysis ◽  
Dft Calculations ◽  
Density Functional ◽  
Chemical Potential ◽  
Chemical Reactivity ◽  
Stacking Interactions ◽  
Functional Theory ◽  
Topology Analysis ◽  
Reactivity Indices

The crystal structures of five new chalcones derived from N-ethyl-3-acetylindole with different substituents were investigated: (E)-3-(4-bromophenyl)-1-(1-ethyl-1H-indol-3-yl)prop-2-en-1-one (3a); (E)-3-(3-bromophenyl)-1-(1-ethyl-1H-indol-3-yl)prop-2-en-1-one (3b); (E)-1-(1-ethyl-1H-indol-3-yl)-3-(4-methoxyphenyl)prop-2-en-1-one (3c); (E)-1-(1-ethyl-1H-indol-3-yl)-3-mesitylprop-2-en-1-one (3d); and (E)-1-(1-ethyl-1H-indol-3-yl)-3-(furan-2-yl)prop-2-en-1-one (3e). The molecular packing of the studied compounds is controlled mainly by C–H⋅⋅⋅O hydrogen bonds, C–H⋅⋅⋅π interactions, and π···π stacking interactions, which were quantitatively analyzed using Hirshfeld topology analysis. Using density functional theory (DFT) calculations, the order of polarity (3b ˂ 3d ˂ 3e ˂ 3a ˂ 3c) was determined. Several chemical reactivity indices such as the ionization potential (I), electron affinity (A), chemical potential (μ), hardness (η), electrophilicity (ω) and nucleophilicity (N) indices were calculated, and these properties are discussed and compared. In addition, the antiproliferative activity of the five new chalcones was studied.

Spin-polarized reactivity indices from density functional theory: theory and applications

2009 ◽  
pp. 63-111 ◽  
Author(s):  
Frank De Proft ◽  
Eduardo Chamorro ◽  
Patricia Pérez ◽  
Mario Duque ◽  
Freija De Vleeschouwer ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Theory Theory ◽  
Functional Theory ◽  
Reactivity Indices ◽  
Spin Polarized

A reaction density functional theory study of the solvent effect in prototype SN2 reactions in aqueous solution

2019 ◽  
Vol 21 (45) ◽  
pp. 24876-24883 ◽  
Author(s):  
Cheng Cai ◽  
Weiqiang Tang ◽  
Chongzhi Qiao ◽  
Peng Jiang ◽  
Changjie Lu ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Density Functional Theory ◽  
Free Energy ◽  
Solvent Effect ◽  
Density Functional ◽  
Density Functional Theory Study ◽  
Functional Theory ◽  
Sn2 Reactions ◽  
Energy Profiles ◽  
Free Energy Profiles

Reaction density functional theory (RxDFT), combining quantum DFT with classical DFT, has been employed to investigate the solvent effect and free energy profiles of SN2 reactions in aqueous solution.

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