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Synchrotron X-ray Microdiffraction and Fluorescence Imaging of Mineral and Rock Samples
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Conformation of alpha zeins in solid state by Fourier transform IR

Lucimara A Forato1, Tatiana De C Bicudo, Luiz A Colnago

  • 1Embrapa Instrumentação Agropecuária, R. XV de Novembro 1452, São Carlos, SP 13560-970, Brazil.

Biopolymers
|October 31, 2003
PubMed

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IR Spectroscopy: Molecular Vibration Overview

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IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration

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IR Frequency Region: X–H Stretching

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IR Frequency Region: Fingerprint Region

IR spectra are divided into two main regions: the diagnostic region and the fingerprint region. The diagnostic region of the spectrum lies above 1500 cm−1. The absorptions resulting from single-bond vibrations of the N–H, C–H, and O–H stretch at higher wavenumbers and appear on the left side of the spectrum. The stretching absorptions of the C≡C and C≡N occur between 2100–2300 cm−1. In contrast, those arising from stretching absorptions of the C=O, C=N, and C=C occur between 1600–1850 cm−1.
The...