Designing Cooperative Hydrogen Bonding in Polyethers with Carboxylic Acid Pendants

2021 ◽  
Author(s):  
Geehwan Kwon ◽  
Minseong Kim ◽  
Woo Hyuk Jung ◽  
Suebin Park ◽  
Thi-Thanh Huynh Tam ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Carboxylic Acid ◽  
Cooperative Hydrogen Bonding

scholarly journals 1,4a,7-Trimethyl-7-vinyl-1,2,3,4,4a,4b,5,6,7,8,10,10a-dodecahydrophenanthrene-1-carboxylic acid

2009 ◽  
Vol 65 (6) ◽  
pp. o1429-o1429
Author(s):  
Zhen-Dong Zhao ◽  
Yu-Xiang Chen ◽  
Yu-Min Wang ◽  
Liang-Wu Bi
Keyword(s):  
Hydrogen Bonding ◽  
Carboxylic Acid ◽  
Hydrogen Bonds ◽  
Title Compound ◽  
Molecular Conformation ◽  
Slash Pine ◽  
Carboxyl Groups ◽  
Isopimaric Acid ◽  
Hydrogen Bonding Interactions ◽  
Cyclohexene Ring

The title compound, also known as isopimaric acid, C20H30O2, was isolated from slash pine rosin. There are two unique molecules in the unit cell. The two cyclohexane rings have classical chair conformations. The cyclohexene ring represents a semi-chair. The molecular conformation is stabilized by weak intramolecular C—H...O hydrogen-bonding interactions. The molecules are dimerized through their carboxyl groups by O—H...O hydrogen bonds, formingR22(8) rings.

Pyrazole amino acids: hydrogen bonding directed conformations of 3-amino-1H-pyrazole-5-carboxylic acid residue

2017 ◽  
Vol 23 (9) ◽  
pp. 716-726 ◽  
Author(s):  
Anna Kusakiewicz-Dawid ◽  
Monika Porada ◽  
Wioletta Ochędzan-Siodłak ◽  
Małgorzata A. Broda ◽  
Maciej Bujak ◽  
...  
Keyword(s):  
Amino Acids ◽  
Hydrogen Bonding ◽  
Carboxylic Acid
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