Intramolecular Hydrogen Bonding and Conformation of Small Peptides:  Variable-Temperature FTIR Study onN-Acetyl-l-Pro-l-Leu-Gly-NH2and Related Compounds

1996 ◽  
Vol 118 (29) ◽  
pp. 6960-6965 ◽  
Author(s):  
Kenji Tonan ◽  
Shun-ichi Ikawa
Keyword(s):  
Hydrogen Bonding ◽  
Variable Temperature ◽  
Intramolecular Hydrogen Bonding ◽  
Small Peptides ◽  
Ftir Study ◽  
Intramolecular Hydrogen ◽  
Related Compounds

THE STUDY OF HYDROGEN BONDING AND RELATED PHENOMENA BY SPECTROSCOPIC METHODS: PART VII. INTRAMOLECULAR HYDROGEN BONDING AND STERIC INTERACTIONS IN o-NITROBENZALDEHYDE AND RELATED COMPOUNDS

1962 ◽  
Vol 40 (10) ◽  
pp. 1891-1898 ◽  
Author(s):  
W. F. Forbes
Keyword(s):  
Hydrogen Bond ◽  
Hydrogen Bonding ◽  
Infrared Spectra ◽  
Intramolecular Hydrogen Bonding ◽  
Spectroscopic Methods ◽  
Steric Interactions ◽  
Spectral Changes ◽  
Suitable Reference ◽  
Intramolecular Hydrogen ◽  
Related Compounds

Certain unusual features in the infrared spectra of o-nitrobenzaldehyde have been interpreted either in terms of an intramolecular hydrogen bond or in terms of steric interactions. As an extension of these studies we have investigated the ultraviolet, infrared, and n.m.r. spectra of o-nitrobenzaldehyde and of suitable reference compounds and have re-examined the available other evidence. It is concluded that the observed spectral changes can best be explained in terms of steric interactions rather than in terms of intramolecular hydrogen bonding.

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