Results 41 to 50 of about 68,348 (275)

Competition between hydrogen and halogen bonding in halogenated 1-methyluracil: water systems [PDF]

open access: yes, 2016
The competition between hydrogen- and halogen-bonding interactions in complexes of 5-halogenated 1-methyluracil (XmU; X = F, Cl, Br, I or At) with one or two water molecules in the binding region between C5-X and C4=O4 is investigated with M06-2X/6-31+G ...
Hogan, Simon William Leslie   +1 more
core   +1 more source

Astatine Facing Janus: Halogen Bonding vs. Charge-Shift Bonding

open access: yesMolecules, 2021
The nature of halogen-bond interactions was scrutinized from the perspective of astatine, potentially the strongest halogen-bond donor atom. In addition to its remarkable electronic properties (e.g., its higher aromaticity compared to benzene), C6At6 can
Serigne Sarr   +4 more
doaj   +1 more source

Toward a uniform description of hydrogen bond and halogen bond: correlations of interaction energies with various geometric, electronic and topological parameters [PDF]

open access: yes, 2017
Correlations between interaction energies and various structural parameters were established to reveal the differences between hydrogen bonds and halogen bonds.
Hu, Gui-Xiang   +3 more
core   +1 more source

Halogen bonds involved in binding of halogenated ligands by protein kinases. [PDF]

open access: yes, 2016
Analysis of 664 known structures of protein kinase complexes with halogenated ligands revealed 424 short contacts between a halogen atom and a potential protein X-bond acceptor, the topology and geometry of which were analyzed according to the type of a ...
Czapinska, Honorata   +4 more
core   +1 more source

Halogen-Bonded Co-Crystals of Aromatic N-oxides: Polydentate Acceptors for Halogen and Hydrogen Bonds

open access: yesCrystals, 2017
Seventeen new halogen-bonded co-crystals characterized by single crystal X-ray analysis are presented from 8 × 4 combinations using methyl-substituted pyridine N-oxides and 1,ω-diiodoperfluoroalkanes. The N−O group in six of 17 co-crystals is monodentate
Rakesh Puttreddy   +3 more
doaj   +1 more source

The effects of halogen elements on the opening of an icosahedral B12 framework [PDF]

open access: yes, 2017
The fully halogenated or hydrogenated B12X12 (X = H, F, Cl, Br and I) clusters are confirmed to be icosahedral. On the other hand, the bare B12 cluster is shown to have a planar structure. A previous study showed that a transformation from an icosahedron
Gong, Liang-Fa   +5 more
core   +3 more sources

Halogen Bonding in Nucleic Acid Complexes

open access: yes, 2017
Halogen bonding (X-bonding) has attracted notable attention among noncovalent interactions. This highly directional attraction between a halogen atom and an electron donor has been exploited in knowledge-based drug design. A great deal of information has
Kolář, Michal H., Tabarrini, Oriana
core   +1 more source

Radical Fluoroalkylation Reactions [PDF]

open access: yes, 2018
Recent protocols and reactions for catalytic radical perfluoroalkylations will be described. The production of perfluoroalkyl radicals (RF = CnF2n+1, n ≥ 2), which effect both addition and substitution reactions on organic substrates, can be realized ...
Barata Vallejo, Sebastian   +2 more
core   +1 more source

The mutual influence of Y⋯N and H⋯H interactions in XHY⋯NCH⋯HM complexes (X = F, Cl, Br; Y = S, Se; M = Li, Na, BeH, MgH): Tuning of the chalcogen bond by dihydrogen bond interaction [PDF]

open access: yes, 2016
The equilibrium structures, interaction energies, and bonding properties of ternary XHY⋯NCH⋯HM complexes are studied by ab initio calculations, where X = F, Cl, Br, Y = S, Se, and M = Li, Na, BeH, MgH.
Asadollahi, S.   +2 more
core   +1 more source

Halogen-Bonded Photoresponsive Materials

open access: yes, 2014
The aim of the present review is to illustrate to the reader the state of the art on the construction of supramolecular azobenzene-containing materials formed by halogen bonding. These materials include several examples of polymeric, liquid crystalline or crystalline species whose performances are either superior to the corresponding performances of ...
Saccone, Marco   +5 more
openaire   +7 more sources

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