Typical IR Absorption Frequencies For Common Functional Groups. Bond. Functional Group. Frequency in cm-1 (Intensity*). C-H. Alkane. 3000-2850 (s). -CH3. 1450 ...
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C-N stretching absorptions are found at 1200 to 1350 cm-1 for aromatic amines, and at 1000 to 1250 cm-1 for aliphatic amines. Strong in-plane NH2 scissoring ...
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Mar 9, 2001 · Infrared Spectroscopy Table. Functional Group, Frequency (cm-1) ... N-H stretch, 3500-3350, strong. stretch, ~3300, strong. =C-H stretch, 3100 ...
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This is a very useful tool for interpreting IR spectra: Only alkenes and aromatics show a C-H stretch slightly higher than 3000 cm-1. Compounds that do not have ...
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Nov 6, 2023 · Only alkenes and aromatics show a C–H stretch slightly higher than 3000 cm-1. Figure 6. shows the spectrum of toluene. Spectrum with aromatic ...
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The spectra of simple alkanes are characterized by absorptions due to C–H stretching and bending (the C–C stretching and bending bands are either too weak or of ...
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Dec 15, 2021 · Characteristic IR Frequency range (cm-1). alcohol. O-H stretching. 3200 – 3600 (broad). carbonyl. C=O stretching. 1650 – 1750 (strong) aldehyde.
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Jan 1, 2019 · Additionally, C-N stretches fall between 1400 and 1000 cm -1, right in the middle of the fingerprint region, the busiest area in most spectra.
Apr 1, 2002 · This range covers mainly the triple bond stretching modes. The C-C-triple bond of alkynes (2130-2150 cm-1) is usually fairly weak, if observed ...
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