Search results for "Interaction energies"

showing 2 items of 2 documents

Modeling the Interaction of Carbon Monoxide with Flexible Graphene: From Coupled Cluster Calculations to Molecular-Dynamics Simulations

2018

The interaction of CO with graphene was studied at different theoretical levels. Quantum-mechanical calculations on finite graphene models with the use of coronene for coupled cluster calculations and circumcoronene for B97D calculations showed that there was no preferential site for adsorption and that the most important factor was the orientation of CO relative to graphene. The parallel orientation was preferred, with binding energies around 9 kJ mol-1 at the CCSD(T) and B97D levels, which was in good agreement with experimental findings. From a large number of CO-circumcoronene and CO-CO interactions, computed at different distances and randomly generated orientations, parameters were fi…

Materials scienceBinding energy02 engineering and technologyMolecular dynamics010402 general chemistry01 natural scienceslaw.inventionMolecular dynamicschemistry.chemical_compoundAdsorptionlawAtomic and Molecular PhysicsAdsorption; Density functional calculations; Graphene; Interaction energies; Molecular dynamics; Atomic and Molecular Physics and Optics; Physical and Theoretical ChemistryInteraction energiesPhysical and Theoretical ChemistryCanonical ensembleGraphene021001 nanoscience & nanotechnologyAtomic and Molecular Physics and OpticsCoronene0104 chemical sciencesDensity functional calculationsCoupled clusterchemistryChemical physicsIntramolecular forceAdsorptionGrapheneand Optics0210 nano-technologyChemPhysChem
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Intramolecular 1,5-S...N σ-hole interaction in (E)-N′-(pyridin-4-ylmethylidene)thiophene-2-carbohydrazide

2020

The hydrazide-hydrazone forms inverse dimers via hydrogen bonding, but its conformation is defined by the presence of an intra­molecular chalcogen bond. Electrostatic forces dominate in the crystal packing and give rise to a layered supra­molecular structure.

crystal structurehirshfeld surfaceDouble bondImineStackingCrystal structureCarbohydrazide010402 general chemistryRing (chemistry)01 natural sciencesResearch Communicationsenergy frameworkslcsh:Chemistrychemistry.chemical_compoundchalcogen bondingGeneral Materials Sciencechemistry.chemical_classificationQuantitative Biology::Biomoleculesintermolecular interaction energies010405 organic chemistryHydrogen bondGeneral Chemistryinter­molecular inter­action energieshydrogen bondingCondensed Matter Physics4-pyridinecarboxaldehyde 2-thienyl hydrazone0104 chemical sciencesCrystallographylcsh:QD1-999chemistry4-pyridine­carboxaldehyde 2-thienyl hydrazoneMonoclinic crystal systemActa Crystallographica Section E Crystallographic Communications
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