Hydrogen-bonding Structures and Energetics of Acrylamide Isomers, Tautomers, and Dimers: Anab initioStudy and Spectral Analysis

2016 ◽  
Vol 63 (12) ◽  
pp. 968-976 ◽  
Author(s):  
Yi-Siang Wang ◽  
Yi-De Lin ◽  
Sheng Der Chao
Keyword(s):  
Hydrogen Bonding ◽  
Spectral Analysis

LIGHT ABSORPTION STUDIES: PART XIV. THE ULTRAVIOLET ABSORPTION SPECTRA OF PHENOLS

1959 ◽  
Vol 37 (8) ◽  
pp. 1294-1304 ◽  
Author(s):  
J. C. Dearden ◽  
W. F. Forbes
Keyword(s):  
Hydrogen Bonding ◽  
Spectral Analysis ◽  
Absorption Spectra ◽  
Excited States ◽  
Light Absorption ◽  
Steric Effects ◽  
Benzene Derivatives ◽  
Substituted Phenols ◽  
Absorption Bands ◽  
Absorption Studies

A spectral analysis of benzene derivatives is extended to substituted phenols. The discussion emphasizes hydrogen bonding and steric effects which occur in phenols. Some of the phenolic absorption bands are ascribed to locally excited states.

Molecular structure, spectral analysis and hydrogen bonding analysis of ampicillin trihydrate: a combined DFT and AIM approach

2015 ◽  
Vol 39 (12) ◽  
pp. 9800-9812 ◽  
Author(s):  
Eram Khan ◽  
Anuradha Shukla ◽  
Anubha Srivastava ◽  
Shweta Shweta ◽  
Poonam Tandon
Keyword(s):  
Molecular Structure ◽  
Hydrogen Bonding ◽  
Spectral Analysis ◽  
Active Sites ◽  
Bonding Analysis ◽  
Ampicillin Trihydrate

The optimized structure and active sites of ampicillin trihydrate calculated using monomeric and dimeric models.

scholarly journals Comparison and Characterisation of Regenerated Chitosan from 1-Butyl-3-methylimidazolium Chloride and Chitosan from Crab Shells

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Saniyat Islam ◽  
Lyndon Arnold ◽  
Rajiv Padhye
Keyword(s):  
Ionic Liquid ◽  
Hydrogen Bonding ◽  
Spectral Analysis ◽  
Fourier Transform ◽  
Antimicrobial Properties ◽  
Crab Shell ◽  
Commercial Grade ◽  
Naturally Occurring ◽  
Ftir Spectral Analysis ◽  
Dissolved Phase

Chitosan is a biopolymer derived from chitin which is naturally occurring in the exoskeleton of crustaceans. This paper reports dissolution and regeneration of chitosan by directly dissolving in an ionic liquid solvent, 1-butyl-3-methylimidazolium chloride (BMIMCl). This will provide an ideal platform to solubilise these kinds of polymers to achieve the dissolution. The current study dissolved chitosan from crab shell utilising BMIMCl as a solvent and characterised the resultant regenerated polymer. The regenerated chitosan showed increased hydrogen bonding when characterised by Fourier transform infrared (FTIR) spectral analysis. In addition, the study also compared the characteristics of regenerated and generic chitosan. The regenerated chitosan was also evaluated for antimicrobial properties and showed to possess antibacterial features similar to the commercial grade. This method can be utilised in future for blending of polymers with chitosan in a dissolved phase.

Hydrogen bonding in liquid methanol at ambient conditions and at high pressure

2000 ◽  
Vol 98 (3) ◽  
pp. 125-134 ◽  
Author(s):  
T. Weitkamp, J. Neuefeind, H. E. Fisch
Keyword(s):  
High Pressure ◽  
Hydrogen Bonding ◽  
Ambient Conditions
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