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IR Tables, UCSC Table 1. Characteristic IR Absorption Peaks of Functional Groups* Vibration Position (cm-1) Intensity* Notes Alkanes C-H stretch 2990 – 2850 m to s Alkenes =C-H stretch 3100 – 3000 m C=C stretch 1680 – 1620 (sat.) 1650 – 1600 (conj.) w to m =C-H bend 995 – 685 s See Table 2 for detail Alkynes
Table of Characteristic IR Absorptions. Infrared Spectroscopy –Analytical chemistry laboratory, ICT Prague. THEORY. An important tool of the analytic and organic chemists is Infrared (IR) Spectroscopy. IR spectra are acquired on a special instrument, called an IR spectrometer.
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Table of Characteristic IR Absorptions. You can download this chart as a printable acrobat pdf file.
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.
The following table lists infrared spectroscopy absorptions by frequency regions.
Department of Chemistry and Biochemistry The Michael Faraday Laboratories, NIU DeKalb, IL 60115-2862 (815) 753-1131 Typical IR Absorption Frequencies For Common Functional Groups
