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Chemistry

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Analytical Chemistry

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Molecular Vibrational Spectroscopy

IR Peak Splitting in Amines and Nitro Groups

Description

IR peak splitting can reveal how identical bonds in a polyatomic group are moving. These bonds may stretch in phase, which is symmetric stretching, or out of phase, which is asymmetric stretching. The two motions often create different IR peak shapes and positions.

As a general rule, asymmetric s...

Transcript

Recordemos que un grupo poliatómico con un mínimo de dos átomos idénticos puede estirarse simétrica o asimétricamente.

Por lo tanto, los dos enlaces N-H de RNH2 se estiran en fase como estiramiento simétrico o fuera de fase exhiben estiramiento asimétrico.

Por lo tanto, RNH2 da lugar a dos picos IR distintos e...

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