Effects of Pt···Pt Bonding, Anions, Solvate Molecules, and Hydrogen Bonding on the Self-Association of Chugaev's Cation, a Platinum Complex with a Chelating Carbene Ligand

2004 ◽  
Vol 43 (23) ◽  
pp. 7508-7515 ◽  
Author(s):  
Jay R. Stork ◽  
Marilyn M. Olmstead ◽  
Alan L. Balch
Keyword(s):  
Hydrogen Bonding ◽  
Platinum Complex ◽  
The Self ◽  
Self Association

NMR Study of Hydrogen Bonding Association of some Sterically Hindered Alcohols in Carbon Tetrachloride, Chloroform and Cyclohexane

2002 ◽  
Vol 216 (7) ◽  
Author(s):  
W.-C. Luo ◽  
J.-L. Lay ◽  
Jenn-Shing Chen
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Hydrogen Bonding ◽  
Carbon Tetrachloride ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
The Self ◽  
Resonance Spectroscopy ◽  
Nmr Study ◽  
Self Association

The self-association (dimerization) due to hydrogen bonding for some alcohols with bulky side chains was investigated by nuclear magnetic resonance spectroscopy. The systems studied include 2,4-dimethyl-3-pentanol or 3-methyl-3-pentanol in [

Amide hydrogen bonding in organic medium

1980 ◽  
Vol 58 (13) ◽  
pp. 1372-1375 ◽  
Author(s):  
J. N. Spencer ◽  
Robert C. Garrett ◽  
Fred J. Mayer ◽  
Johanna E. Merkle ◽  
Carla R. Powell ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Infrared Spectroscopy ◽  
Proton Donor ◽  
Organic Medium ◽  
Association Constants ◽  
The Self ◽  
Amide Hydrogen ◽  
Theoretical Predictions ◽  
Self Association

Thermodynamic parameters for the self-association of N-methylformamide and N-methylacetamide in CCl4 solvent have been determined by infrared spectroscopy. The pure base calorimetric method was used to determine the enthalpy of hydrogen bond complex formation of N-methylformamide and N-methylacetamide with N,N-dimethylformamide, N,N-dimethylacetamide, ethyl acetate, and dioxane. Comparison of the calorimetric and spectroscopic results show that the dimers of N-methylformamide and N-methylacetamide are linear with hydrogen bond enthalpies of −2.9 and −3.9 kcal mol−1 respectively. The carbonyl group of N-methylacetamide was found to be a better proton accepter than the carbonyl of N-methylformamide in agreement with theoretical predictions. N-methylacetamide was found to be a better proton donor than N-methylformamide in disagreement with theoretical predictions. The dimer self-association constants appear to be larger than previously reported.

Adsorption of N-methylacetamide and L-arginine onto apatitic phosphates

1981 ◽  
Vol 59 (2) ◽  
pp. 222-226 ◽  
Author(s):  
J. V. Garcia-Ramos ◽  
P. Carmona
Keyword(s):  
Hydrogen Bonding ◽  
Infrared Spectroscopy ◽  
The Self ◽  
Carboxyl Group ◽  
Amide Hydrogen ◽  
Trans Form ◽  
Positive Ions ◽  
Phosphate Anions ◽  
Self Association ◽  
Initial Adsorption

The adsorption of N-methylacetamide and of L-arginine on apatitic phosphates has been studied by infrared spectroscopy. During the initial adsorption, the bands of adsorbed N-methylacetamide indicate the presence of the trans form attached to surface cations via the carbonyl group. The position of the amide I band is found to give a linear correlation with q/r for apatitic cations (where q is the charge and r the radius of a cation). At higher amounts of adsorbed amide, hydrogen bonding arises either from the self-association of amide molecules or from the binding of these to the surface phosphate anions. L-Arginine can be adsorbed through the groups containing NH bonds or through the carboxyl group. Infrared spectra of calcinated samples as well as the Ca/P ratio determinations point out that a substitution of L-arginine positive ions for surface cations takes place upon adsorption of this amino acid on apatitic calcium phosphate.

Cation and hydrogen bonding effects on the self-association and luminescence of the dicyanoaurate ion, [Au(CN)2]?

2003 ◽  
pp. 4282 ◽  
Author(s):  
Matthias Stender ◽  
Marilyn M. Olmstead ◽  
Alan L. Balch ◽  
Daniel Rios ◽  
Saeed Attar
Keyword(s):  
Hydrogen Bonding ◽  
The Self ◽  
Self Association

NMR Study of Self-Association of Acetanilide in Chloroform, Acetone, Acetonitrile and Dimethyl Sulphoxide

2001 ◽  
Vol 215 (4) ◽  
Author(s):  
W.-C. Luo ◽  
Jenn-Shing Chen
Keyword(s):  
Hydrogen Bonding ◽  
Dimethyl Sulphoxide ◽  
The Self ◽  
Nmr Study ◽  
Self Association

The self-association of acetanilide through hydrogen bonding between N-H and O=C in the solvents [

Hydrophobic interaction and hydrogen bonding driving the self-assembling of quinoa protein and flavonoids

2021 ◽  
pp. 106807
Author(s):  
Kang Liu ◽  
Xue-Qiang Zha ◽  
Qiang-Ming Li ◽  
Li-Hua Pan ◽  
Jian-Ping Luo
Keyword(s):  
Hydrogen Bonding ◽  
Hydrophobic Interaction ◽  
The Self ◽  
Self Assembling

Recording the Self-Assembly Behavior of Nanomaterials Directed by Hydrogen Bonding

2021 ◽  
Author(s):  
Ganghuo Pan ◽  
Jie Leng ◽  
Liye Deng ◽  
Liwen Xing ◽  
Rui Feng
Keyword(s):  
Hydrogen Bonding ◽  
Self Assembly ◽  
The Self ◽  
Assembly Behavior
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