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espectro infrarrojo del aire
H2O
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CO2
modo ν3
CO2
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660
680
500
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Vibraciones típicas en péptidos y proteínas
Designation
Approximate
frecuency (cm-1)
Nature of vibration
A
B
3300
3110
N-H stretching, in resonance with
overtone (2 x amide II)
I
1653
II
1567
III
1299
IV
627
40% O=C-N bending; 60% other
V
725
N-H bending
VI
600
C=O bending
VII
200
C-N torsion
80% C=O stretching; 10% C-N
stretching; 10% N-H bending
60% N-H bending; 40% C-N
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