Results 71 to 80 of about 166,291 (161)
Anion–π interactions influence pKa values
Beilstein Journal of Organic Chemistry, 2011 Five 8-(4-R-phenyl)-1-naphthol derivatives were prepared by PdCl2-catalysed electrophilic aromatic substitution. The pKa' values for these 1,8-disubstituted arene naphthols have been measured in acetonitrile/water (R = NO2, 8.42; R = Cl, 8.52; R = H, 8 ...
Christopher J. Cadman, Anna K. Croft
doaj +1 more source
Buckyplates and Buckybowls: Examining the Effects of Curvature on π–π Interactions [PDF]
, 2016 π–π interactions are integral to many areas of chemistry, biochemistry, and materials science. Here we use electronic structure theory to analyze how π–π interactions change as the π-systems are curved in model complexes based on coronene and corannulene
Matthew R. Kennedy (1688776) +2 more
core +1 more source
Hydrogen bonds and π–π interactions in two new crystalline phases of methylene blue
Acta Crystallographica Section E: Crystallographic Communications, 2018 Two unprecedented solid phases involving the 3,7-bis(dimethylamino)phenothiazin-5-ium cation, i.e. methylene blue (MB+), have been obtained and structurally characterized.
Stefano Canossa +2 more
doaj +1 more source
Branching fraction measurements of B0(s) -> J/ψK0Sh+h(')- decays [PDF]
This thesis presents the branching fractions measurements of B0(s) -> J/ψK0Sh+h(')− (h(') = K,π) decays, corresponding to an integrated luminosity of 1.0 fb−1 of data recorded at a centre-of-mass energy of √s = 7TeV collected with the LHCb detector at ...
Reid, Matthew M.
core
Polyhydroxyalkanoate-based thin films : characterization and optimization for calcium phosphate crystallization [PDF]
, 2013 Novel polymer-inorganic composites attract scientific and commercial attention as potential biomaterials for orthopedic applications, due to the fact that currently used materials have still many drawbacks, e.g.
Jagoda, Agnieszka Maria
core +1 more source
Molecules, 2015 MP2/aug-cc-pVTZ calculations were performed on complexes of aluminium and boron trihydrides and trihalides with acetylene and ethylene. These complexes are linked through triel bonds where the triel center (B or Al) is characterized by the Lewis acid ...
Sławomir J. Grabowski
doaj +1 more source
Acta Crystallographica Section E: Crystallographic Communications, 2015 In the title compound, C24H18N4O4, the plane of the phenyl ring is inclined to those of the toluene ring and the dinitro-substituted benzene ring by 66.96 (19) and 47.06 (18)°, respectively, while the planes of the two benzene rings are inclined to one ...
Alexander A. Golovanov +4 more
doaj +1 more source
Enolate chemistry with anion–π interactions [PDF]
, 2014 Anion–π interactions occur on the surface of π-acidic aromatic planes with positive quadrupole moments. Their ability to contribute to the binding and transport of anions has been demonstrated recently.
Zhao, Yingjie +2 more
core +1 more source
Crystal structure of (7-methyl-2-oxo-2H-chromen-4-yl)methyl piperidine-1-carbodithioate
Acta Crystallographica Section E: Crystallographic Communications, 2015 In the title compound, C17H19NO2S2, the 2H-chromene ring system is nearly planar, with a maximum deviation of 0.0383 (28) Å, and the piperidine ring adopts a chair conformation.
K. R. Roopashree +4 more
doaj +1 more source
Amide–π Interactions in the Structural Stability of Proteins: Role in the Oligomeric Phycocyanins
ComputationThis study investigates the influences and environmental preferences of amide–π interactions, a relatively unexplored class of charge-free interactions, in oligomeric phycocyanins.
Luka M. Breberina +3 more
doaj +1 more source