The Hydrogen-Bonded 2-Pyridone Dimer Model System. 1. Combined NMR and FT-IR Spectroscopy Study

2010 ◽  
Vol 114 (29) ◽  
pp. 7749-7760 ◽  
Author(s):  
Łukasz Szyc ◽  
Jing Guo ◽  
Ming Yang ◽  
Jens Dreyer ◽  
Peter M. Tolstoy ◽  
...  
Keyword(s):  
Ir Spectroscopy ◽  
Model System ◽  
Spectroscopy Study ◽  
Dimer Model ◽  
Ft Ir ◽  
System 1 ◽  
Ft Ir Spectroscopy ◽  
Hydrogen Bonded

scholarly journals Polymorphism of hydrogen-bonded star mesogens – a combinatorial DFT-D and FT-IR spectroscopy study

RSC Advances ◽  
2019 ◽  
Vol 9 (15) ◽  
pp. 8444-8453 ◽  
Author(s):  
Michael Pfletscher ◽  
Janek Wysoglad ◽  
Jochen S. Gutmann ◽  
Michael Giese
Keyword(s):  
Infrared Spectroscopy ◽  
Ir Spectroscopy ◽  
Quantum Chemistry ◽  
Spectroscopy Study ◽  
Ft Ir ◽  
Ft Ir Spectroscopy ◽  
Hydrogen Bonded

The structure of hydrogen-bonded star mesogens is investigated using modern quantum chemistry methods in combination with infrared spectroscopy.

Protein secondary structure from FT-IR spectroscopy: correlation with dihedral angles from three-dimensional Ramachandran plots

1991 ◽  
Vol 69 (11) ◽  
pp. 1639-1642 ◽  
Author(s):  
Michael Jackson ◽  
Henry H. Mantsch
Keyword(s):  
Ir Spectroscopy ◽  
Three Dimensional ◽  
Protein Secondary Structure ◽  
Secondary Structures ◽  
Dihedral Angles ◽  
Carbonyl Groups ◽  
Amide Carbonyl ◽  
Ft Ir ◽  
Ft Ir Spectroscopy ◽  
Hydrogen Bonded

The frequency of the so-called "amide I" band (amide C=O stretching vibration, vC=O) of proteins is discussed in terms of the dihedral angles of the various secondary structures present within proteins. We propose that in the case of intra- or intermolecular hydrogen-bonded amide carbonyl groups the frequency of this absorption can be directly related to the [Formula: see text], ψ angles of the amide moieties for the major secondary structures. Amide I bands at frequencies above those found for non-hydrogen bonded amide carbonyl groups are rationalized in terms of a change in the third dihedral angle, ω. Rotation around the amide C—N bond in sterically demanding structures, such as turns where ω deviates from 180°, is expected to cause an increase in the electron density of the amide carbonyl groups and so increase vC=O to frequencies greater than that seen for unperturbed carbonyl groups. Key words: FT-IR spectroscopy, proteins, structure, dihedral angles.

Temperature-Dependent FT-IR Spectroscopy Study of Silver 1,9-Nonanedithiolate

2001 ◽  
Vol 55 (8) ◽  
pp. 1085-1091 ◽  
Author(s):  
Hyouk Jin Choi ◽  
Sang Woo Han ◽  
Seung Joon Lee ◽  
Kwan Kim
Keyword(s):  
Ir Spectroscopy ◽  
Spectroscopy Study ◽  
Temperature Dependent ◽  
Ft Ir ◽  
Ft Ir Spectroscopy
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