Hydrogen bond networks of ammonia clusters: What we know and what we don't know

A Malloum, J Conradie - Journal of Molecular Liquids, 2021 - Elsevier
Understanding the behaviour of liquid ammonia is subjected to understanding the hydrogen
bond networks in ammonia clusters as well as their interactions. In comparison to water …

Structures, relative stability and binding energies of neutral water clusters,(H 2 O) 2–30

A Malloum, JJ Fifen, Z Dhaouadi, SGN Engo… - New Journal of …, 2019 - pubs.rsc.org
We have revised the structures of neutral water clusters,(H2O) n= 2–30, with the affordable
M06-2X functional, presenting up to 25 isomers for each cluster size. Besides, relative …

Solvation energies of the proton in methanol revisited and temperature effects

A Malloum, JJ Fifen, J Conradie - Physical Chemistry Chemical …, 2018 - pubs.rsc.org
We report in this work the absolute solvation enthalpies and the absolute solvation free
energies of the proton in methanol at temperatures ranging from 20 to 340 K and an …

Theoretical study of the Cu2+-glycine interaction in ammonia and temperature effects

TE Da-yang, A Malloum, JJ Fifen, M Nsangou… - Journal of Molecular …, 2024 - Elsevier
In this study, we have investigated the potential energy of surfaces of the various glycine
tautomers, also the interaction between Cu 2+ cation with these glycine tautomers in both …

Hydrated Sodium Ion Clusters [Na+(H2O)n (n = 1–6)]: An ab initio Study on Structures and Non-covalent Interaction

P Wang, R Shi, Y Su, L Tang, X Huang… - Frontiers in chemistry, 2019 - frontiersin.org
Structural, thermodynamic, and vibrational characteristics of water clusters up to six water
molecules incorporating a single sodium ion [Na+ (H2O) n (n= 1–6)] are calculated using a …

Theoretical infrared spectrum of the ethanol hexamer

A Malloum, JJ Fifen, J Conradie - International Journal of …, 2020 - Wiley Online Library
The hydrogen bond network of ethanol clusters is among the most complex hydrogen bond
networks of molecular clusters. One of the reasons of its complexity arises from the number …

Structures and spectroscopy of the ammonia eicosamer,(NH3) n= 20

A Malloum, JJ Fifen, J Conradie - The Journal of Chemical Physics, 2018 - pubs.aip.org
In this work, we reported structures and relative stabilities of the neutral ammonia eicosamer
at the APFD/6-31++ g (d, p) level of theory. Furthermore, we have examined the temperature …

Structures and infrared spectroscopy of large sized protonated ammonia clusters

A Malloum, JJ Fifen, J Conradie - The Journal of Chemical Physics, 2018 - pubs.aip.org
We investigated in this work the structures and relative population of large sized protonated
ammonia clusters, H+(NH 3) n⁠, n= 18, 20, 25, 30. To this end, we generated initial …

Global and local minima of protonated acetonitrile clusters

A Malloum, J Conradie - New Journal of Chemistry, 2020 - pubs.rsc.org
Understanding the proton transfer processes in acetonitrile is subjected to the knowledge of
the structures of protonated acetonitrile clusters, H+ (MeCN) n. Despite their importance …

Non-covalent interactions in dimethylsulfoxide (DMSO) clusters and DFT benchmarking

A Malloum, J Conradie - Journal of Molecular Liquids, 2022 - Elsevier
Dimethylsulfoxide (DMSO) is one of the most used solvents in industries and in Chemistry.
Understanding the dynamics of the solvent is subjected to the understanding of interactions …