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Spectroscopy Data Tables 1 Z:\files\classes\spectroscopy\typical spectra charts.DOC Infrared Tables (short summary of common absorption frequencies) The values given in the tables that follow are typical values. Specific bands may fall over a range of wavenumbers, cm-1. Specific substituents may cause variations in absorption frequencies.
Core Concepts. This article will provide a table containing the IR spectrum frequency values and the molecules they represent. Topics Covered in other Articles. What is a Spectrophotometer? Spectral Analysis of Organic Compounds. IR Spectroscopy. Table of IR Spectrum Frequency Values. IR Spectrum Stretching Vibrations.
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The values given in the tables that follow are typical values. Specific bands may fall over a range of wavenumbers, cm-1. Specific substituents may cause variations in absorption frequencies. Absorption intensities may be stronger or weaker than expected, often depending on dipole moments. Additional bands may confuse the interpretation.
Feb 11, 2023 · The IR spectrum is a graph where the x-axis is frequency and is labeled as wavenumber (cm-1). The y-axis is the amount of light absorbed and labeled as Transmittance (%). This is measuring how much light has been transmitted at a particular frequency.
- C-H Stretch in cm -1
- ~3000
- ~3100
- ~3330
IR Spectrum Table & Chart. The IR Spectrum Table is a chart for use during infrared spectroscopy. The table lists IR spectroscopy frequency ranges, appearance of the vibration and absorptions for functional groups. There are two tables grouped by frequency range and compound class.
ir spectrum of alkanes; ir spectrum of alkenes; ir spectrum of alkynes; ir spectrum of a nitrile; ir spectrum of an alcohol; ir spectrum of aldehydes and ketones; ir spectrum of a carboxylic acid; ir spectra of amines; ir spectrum of amides
Table S2. IR table by compound class IR TABLE BY COMPOUND CLASS If you are looking up the absorption of a particular compound class, use this IR spectrum chart. If you already know the frequency, use the IR frequency table above. Compound Class Group Absorption (cm-1) Appearance Comments acid halide C=O stretching 1815-1785 strong alcohols O-H ...