Sources and relative stabilities of acylated and nonacylated anthocyanins in beverage systems

2021 ◽  
Author(s):  
Gayan Chandrajith Vidana Gamage ◽  
Yau Yan Lim ◽  
Wee Sim Choo
Keyword(s):  
Relative Stabilities

HYDROGEN BONDING IN DIASTEREOISOMERIC α-β AMINOALCOHOLS: A REINVESTIGATION OF THE EPHEDRINES BY N.M.R

1960 ◽  
Vol 38 (1) ◽  
pp. 125-130 ◽  
Author(s):  
James B. Hyne
Keyword(s):  
Hydrogen Bonding ◽  
Polar Solvents ◽  
Relative Stabilities ◽  
Hydrogen Bonded

The results of an n.m.r. study of the diastereoisomeric ephedrine and ψ-ephedrine molecules in non-polar solvents are interpreted and discussed in terms of the relative stabilities of the intramolecularly hydrogen-bonded conformers.

scholarly journals Doping the Buckminsterfullerene by Substitution: Density Functional Theory Studies of C59X (X = B, N, Al, Si, P, Ga, Ge, and As)

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Hongcun Bai ◽  
Wenxin Ji ◽  
Xiangyu Liu ◽  
Liqiong Wang ◽  
Nini Yuan ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Physical Properties ◽  
Density Functional ◽  
Dielectric Constants ◽  
Geometrical Structures ◽  
Functional Theory ◽  
Relative Stabilities ◽  
As Doping ◽  
Quantum Chemistry Calculations ◽  
Heteroatom Substitution

The heterofullerenes C59X (X = B, N, Al, Si, P, Ga, Ge, and As) were investigated by quantum chemistry calculations based on density functional theory. These hybrid cages can be seen as doping the buckminsterfullerene by heteroatom substitution. The geometrical structures, relative stabilities, electronic properties, vibrational frequencies, dielectric constants, and aromaticities of the doped cages were studied systemically and compared with those of the pristine C60cage. It is found that the doped cages with different heteroatoms exhibit various electronic, vibrational, and aromatic properties. These results imply the possibility to modulate the physical properties of these fullerene-based materials by tuning substitution elements.

Factors controlling the relative stabilities of cis- and trans-[PtX2L2] isomers: Chatt and Wilkins—50 years on

2002 ◽  
pp. 278-279 ◽  
Author(s):  
Jeremy N. Harvey ◽  
Katie M. Heslop ◽  
A. Guy Orpen ◽  
Paul G. Pringle
Keyword(s):  
Relative Stabilities ◽  
Cis And Trans

Rapid Evaluation of Suitable Substrates with High Affinity to Artificial Caffeine Receptors by MS Based Techniques

2005 ◽  
Vol 60 (10) ◽  
pp. 1077-1082 ◽  
Author(s):  
Daniela Mirk ◽  
Heinrich Luftmann ◽  
Siegfried R. Waldvogel
Keyword(s):  
Mass Spectrometry ◽  
Gas Phase ◽  
Collision Induced Dissociation ◽  
Rapid Evaluation ◽  
Tandem Mass ◽  
Binding Affinities ◽  
Electrospray Tandem Mass Spectrometry ◽  
Relative Stabilities ◽  
Receptor Complexes ◽  
High Affinity

A modification of our triphenylene ketal based receptor facilitates electrospray tandem mass spectrometry investigations. Binding affinities of eleven potential substrates, e.g. caffeine and other xanthine alkaloids, are probed in the gas phase with collision induced dissociation. The relative stabilities of the substrate-receptor complexes are rapidly determined and the findings are correlated with the corresponding results in solution.

Sign in / Sign up

Export Citation Format

Share Document