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IRlecture - Infrared Spectroscopy Electromagnetic Spectrum...

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Infrared Spectroscopy
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2 Electromagnetic Spectrum
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3 Energy of a photon E = h ν E = hc/ λ = c λ ν x
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4 Molecular Vibrations
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5 IR Spectrometer
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6 Typical IR Spectra = 1 ν λ
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7 Typical Ranges for common functional groups 4000 3500 3000 2500 2000 1500 1000 500 wavenumber, cm -1 O H C H C H C H C C C N C O Strong Strong Broad
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8 Octane IR Spectrum C H 2850 - 2960 cm -1
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9 Octene IR Spectrum C H 3020 - 3100 cm -1
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10 Heptyne IR Spectrum C H 3300 cm -1 (strong) C 2100-2260 cm -1 C
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11 Ethanol IR Spectrum O H 3400-3650 cm -1 (strong, broad)
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12 Butyraldehyde IR Spectrum O H O 1670-1780 cm -1 (strong) C
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13 Ethyl Acetate IR O O O 1670-1780 cm -1 (strong) C
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14 Benzonitrile IR C N N 2100-2260 cm
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IRlecture - Infrared Spectroscopy Electromagnetic Spectrum...

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