Results 41 to 50 of about 19,276 (249)

Tetravalent doping of CeO2 : the impact of valence electron character on group IV dopant influence [PDF]

open access: yes, 2013
Fluorite CeO2 doped with group IV elements is studied within the density functional theory (DFT) and DFT + U framework. Concentration-dependent formation energies are calculated for Ce(1-x)Z(x)O(2) (Z = C, Si, Ge, Sn, Pb, Ti, Zr, Hf) with 0
Bultinck, Patrick   +4 more
core   +3 more sources

Crystal structure and Hirshfeld surface analysis of 1,2,4-triazolium hydrogen oxalate [PDF]

open access: yesActa Crystallographica Section E Crystallographic Communications, 2020
The asymmetric unit of the title 1:1 salt 1,2,4-triazolium hydrogen oxalate, C2H4N3 +·C2HO4 − (I), comprises one 1,2,4-triazolium cation and one hydrogen oxalate anion. In the crystal, the hydrogen oxalate anions are linked by O—H...O hydrogen bonds into chains running parallel to [100].
Nutcha Ponjan   +2 more
openaire   +3 more sources

Crystal structure, Hirshfeld surface analysis and DFT studies of 6-[(E)-2-(thiophen-2-yl)ethenyl]-4,5-dihydropyridazin-3(2H)-one

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2019
In the title compound, C10H10N2OS, the five atoms of the thiophene ring are essentially coplanar (r.m.s. deviation = 0.0037 Å) and the pyridazine ring is non-planar.
Said Daoui   +6 more
doaj   +1 more source

Bis(mefloquinium) butanedioate ethanol monosolvate: crystal structure and Hirshfeld surface analysis [PDF]

open access: yesActa Crystallographica Section E Crystallographic Communications, 2019
The asymmetric unit of the centrosymmetric title salt solvate, 2C17H17F6N2O+· C4H4O42−·CH3CH2OH, (systematic name: 2-{[2,8-bis(trifluoromethyl)quinolin-4-yl](hydroxy)methyl}piperidin-1-ium butanedioate ethanol monosolvate) comprises two independent cations, with almost superimposable conformations and each approximating the shape of the letterL, a ...
Jámes L. Wardell   +2 more
openaire   +3 more sources

Transcript of Dissecting the Hirshfeld Surface

open access: yes, 2023
The Hirshfeld surface was introduced by Spackman and Byrom in 1997, based on the Hirshfeld partitioning scheme for electronic contribution in molecular crystals. The Hirshfeld surface analysis and its fingerprint have become since then popular tools for visualization of intermolecular interactions and crystal packing.
openaire   +1 more source

Site selectivity of halogen oxygen bonding in 5- and 6-haloderivatives of uracil [PDF]

open access: yes, 2019
Seven 5-and 6-halogenated derivatives of uracil or 1-methyluracil (halogen = Cl, Br, I) were studied by single crystal X-ray diffraction. In contrast with pure 5-halouracils, where the presence of N-H…O and C-H…O hydrogen bonds prevents the formation ...
Portalone, Gustavo
core   +1 more source

Crystal structure and Hirshfeld surface analysis of 2-aminopyridinium hydrogen phthalate [PDF]

open access: yesActa Crystallographica Section E Crystallographic Communications, 2019
Aminopyridine and phthalic acid are well known synthons for supramolecular architectures for the synthesis of new materials for optical applications. The 2-aminopyridinium hydrogen phthalate title salt, C5H7N2 +·C8H5O4 −, crystallizes in the non-centrosymmetric space group P21.
V. Siva   +3 more
openaire   +3 more sources

Electronic friction-based vibrational lifetimes of molecular adsorbates: Beyond the independent atom approximation [PDF]

open access: yes, 2015
We assess the accuracy of vibrational damping rates of diatomic adsorbates on metal surfaces as calculated within the local-density friction approximation (LDFA).
Juaristi, J. Iñaki   +3 more
core   +4 more sources

Paramagnetic adsorbates on graphene: a charge transfer analysis

open access: yes, 2008
We introduce a modified version of the Hirshfeld charge analysis method and demonstrate its accurateness by calculating the charge transfer between the paramagnetic molecule NO2 and graphene.
Leenaerts, O.   +2 more
core   +1 more source

Layer Antiferromagnetic State in Bilayer Graphene : A First-Principle Investigation [PDF]

open access: yes, 2012
The ground state of bilayer graphene is investigated by the density functional calculations with local spin density approximation. We find a ground state with layer antiferromagnetic ordering, which has been suggested by former studies based on ...
Gao, Jin-Hua   +3 more
core   +2 more sources

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