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LO0 TABLE 18.2 Characteristic infrared absorption peaks of functional groups Vibration Position (cm) Intensity Comment Alkanes C-H stretch 2962-2853 m to s C-H bend 1470-1430 and 1375-1365 m to w Alkenes =C-H stretch 3100-3010 C=C stretch C-H bend m 1680-1640 (sat.), 1630-1590 (conj. w to m 995-685 See Table 18.3 for detail. Alkynes =C-H stretch 3300-3200 C=C stretch 2250-2100 m to w Aromatic C-H stretch 3080-3020 m to w C=C stretch C-H bend 1650-1580 m to w 900-680 See Table 18.3 for detail. Alcohols

LO0 TABLE 18.2 Characteristic infrared absorption peaks of functional groups Vibration Position (cm) Intensity Comment Alkanes C-H stretch 2962-2853 m to s C-H bend 1470-1430 and 1375-1365 m to w Alkenes =C-H stretch 3100-3010 C=C stretch C-H bend m 1680-1640 (sat.), 1630-1590 (conj. w to m 995-685 See Table 18.3 for detail. Alkynes =C-H stretch 3300-3200 C=C stretch 2250-2100 m to w Aromatic C-H stretch 3080-3020 m to w C=C stretch C-H bend 1650-1580 m to w 900-680 See Table 18.3 for detail. Alcohols

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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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LD Characteristic infrared absorption peaks of functional groups TABLE 18.2 Vibration Position (cm-) Intensity Comment Alkanes C-H stretch 2962-2853 m to s C-H bend 1470-1430 and 1375–1365 m to w Alkenes =C---H stretch 3100-3010 C=C stretch С—Н bend 1680–1640 (sat.), 1630–1590 (conj.) w to m 995-685 See Table 18.3 for detail. Alkynes =C-H stretch 3300-3200 50 C=C stretch 2250-2100 m to w Aromatic C-H stretch C=C stretch 3080-3020 m to w 1650–1580 m to w C-H bend 900-680 See Table 18.3 for detail. Alcohols 0-H stretch 3650-3550 Free 3550-3300 br, s Hydrogen bonded C-O stretch 1260-1000 Amines D N-H stretch 3500-3100 br, m 1° (two bands), 2° (one band) 4000 3000 2000 1500 1000 500 Nitriles HAVENUMBERI -1l C=N stretch 2280-2200 Aldehydes C-H stretch 2900–2820 and 2775–2700 H-C=O w C=O stretch 1740–1720 (sat.), 1705–1680 (conj.) H,C CH3 Ketones C=0 stretch 1725–1705 (sat.), 1685–1665 (conj.) Esters A H HO, В C=O stretch 1750–1735 (sat.), 1730–1715 (conj.) C-O stretch 1250–1160 5 Acids Diethyl amine 0-H stretch C=0 stretch 3500-2500 m 1725-1700 (sat.), 1715–1680 (conj.) Amides Benzoic acid N-H stretch C=O stretch 3500-3150 1° (two bands), 2° (one band) m 1680–1630 CH,OH| Anhydrides C=O stretch C-O stretch 1850–1800 and 1790–1740 1050-900 CH,OH Acid chlorides C D C=O stretch 1820-1770 Nitro NO, stretch 1660–1490 and 1390–1260 Benzyl alcohol Methanol a. s= strong, m = medium, w = weak, br = broad b. sat. = saturated; conj. = conjugated TEHNSHLTTANCETI
Transcribed Image Text:LD Characteristic infrared absorption peaks of functional groups TABLE 18.2 Vibration Position (cm-) Intensity Comment Alkanes C-H stretch 2962-2853 m to s C-H bend 1470-1430 and 1375–1365 m to w Alkenes =C---H stretch 3100-3010 C=C stretch С—Н bend 1680–1640 (sat.), 1630–1590 (conj.) w to m 995-685 See Table 18.3 for detail. Alkynes =C-H stretch 3300-3200 50 C=C stretch 2250-2100 m to w Aromatic C-H stretch C=C stretch 3080-3020 m to w 1650–1580 m to w C-H bend 900-680 See Table 18.3 for detail. Alcohols 0-H stretch 3650-3550 Free 3550-3300 br, s Hydrogen bonded C-O stretch 1260-1000 Amines D N-H stretch 3500-3100 br, m 1° (two bands), 2° (one band) 4000 3000 2000 1500 1000 500 Nitriles HAVENUMBERI -1l C=N stretch 2280-2200 Aldehydes C-H stretch 2900–2820 and 2775–2700 H-C=O w C=O stretch 1740–1720 (sat.), 1705–1680 (conj.) H,C CH3 Ketones C=0 stretch 1725–1705 (sat.), 1685–1665 (conj.) Esters A H HO, В C=O stretch 1750–1735 (sat.), 1730–1715 (conj.) C-O stretch 1250–1160 5 Acids Diethyl amine 0-H stretch C=0 stretch 3500-2500 m 1725-1700 (sat.), 1715–1680 (conj.) Amides Benzoic acid N-H stretch C=O stretch 3500-3150 1° (two bands), 2° (one band) m 1680–1630 CH,OH| Anhydrides C=O stretch C-O stretch 1850–1800 and 1790–1740 1050-900 CH,OH Acid chlorides C D C=O stretch 1820-1770 Nitro NO, stretch 1660–1490 and 1390–1260 Benzyl alcohol Methanol a. s= strong, m = medium, w = weak, br = broad b. sat. = saturated; conj. = conjugated TEHNSHLTTANCETI
LOD TABLE 18. 2 Characteristic infrared absorption peaks of functional groups Vibration Position (cm-') Intensity Comment Alkanes C-H stretch C-H bend 2962–2853 m to s 1470-1430 and 1375–1365 m to w Alkenes =C--H stretch 3100-3010 C=C stretch 1680–1640 (sat.), 1630–1590 (conj. w to m C-H bend 995-685 See Table 18.3 for detail. Alkynes =C-H stretch 3300-3200 50 C=C stretch 2250-2100 m to w Aromatic C-H stretch 3080–3020 1650–1580 m to w C=C stretch m to w C-H bend 900-680 See Table 18.3 for detail. Alcohols 0-H stretch 3650–3550 m Free 3550-3300 br, s Hydrogen bonded C-O stretch 1260-1000 Amines N-H stretch 3500–3100 br, m 1° (two bands), 2° (one band) 4000 3000 2000 1500 1000 500 Nitriles HAVENUMBER I -l C=N stretch 2280–2200 Aldehydes C-H stretch 2900-2820 and 2775-2700 H-C=0 w C=O stretch 1740–1720 (sat.}, 1705–1680 (conj.) Ketones C=0 stretch 1725–1705 (sat.), 1685–1665 (conj.) Esters C=0 stretch 1750-1735 (sat.), 1730–1715 (conj.) A H,C H,C OCH,CH, C-O stretch 1250–1160 5 Acids 0-H stretch C=0 stretch 3500-2500 Ethyl acetate 1725–1700 (sat.), 1715–1680 (conj.) p-Anisaldehyde Amides 3500-3150 1680–1630 1° (two bands), 2° (one band) N-H stretch m C=0 stretch Anhydrides C=O stretch C-O stretch 1850–1800 and 1790–1740 1050-900 `CH, ОН Acid chlorides C=0 stretch C 1820-1770 Nitro NO, stretch 1660–1490 and 1390–1260 Benzoic acid a. s= strong, m = medium, w = weak, br = broad b. sat. = saturated; conj. = conjugated TEHNSHLTTANCETAT
Transcribed Image Text:LOD TABLE 18. 2 Characteristic infrared absorption peaks of functional groups Vibration Position (cm-') Intensity Comment Alkanes C-H stretch C-H bend 2962–2853 m to s 1470-1430 and 1375–1365 m to w Alkenes =C--H stretch 3100-3010 C=C stretch 1680–1640 (sat.), 1630–1590 (conj. w to m C-H bend 995-685 See Table 18.3 for detail. Alkynes =C-H stretch 3300-3200 50 C=C stretch 2250-2100 m to w Aromatic C-H stretch 3080–3020 1650–1580 m to w C=C stretch m to w C-H bend 900-680 See Table 18.3 for detail. Alcohols 0-H stretch 3650–3550 m Free 3550-3300 br, s Hydrogen bonded C-O stretch 1260-1000 Amines N-H stretch 3500–3100 br, m 1° (two bands), 2° (one band) 4000 3000 2000 1500 1000 500 Nitriles HAVENUMBER I -l C=N stretch 2280–2200 Aldehydes C-H stretch 2900-2820 and 2775-2700 H-C=0 w C=O stretch 1740–1720 (sat.}, 1705–1680 (conj.) Ketones C=0 stretch 1725–1705 (sat.), 1685–1665 (conj.) Esters C=0 stretch 1750-1735 (sat.), 1730–1715 (conj.) A H,C H,C OCH,CH, C-O stretch 1250–1160 5 Acids 0-H stretch C=0 stretch 3500-2500 Ethyl acetate 1725–1700 (sat.), 1715–1680 (conj.) p-Anisaldehyde Amides 3500-3150 1680–1630 1° (two bands), 2° (one band) N-H stretch m C=0 stretch Anhydrides C=O stretch C-O stretch 1850–1800 and 1790–1740 1050-900 `CH, ОН Acid chlorides C=0 stretch C 1820-1770 Nitro NO, stretch 1660–1490 and 1390–1260 Benzoic acid a. s= strong, m = medium, w = weak, br = broad b. sat. = saturated; conj. = conjugated TEHNSHLTTANCETAT
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