Question

What are the functional groups?

THEHITTHWEST 200g JERO LOGO HAVEHUICENTO 8088 55 797 47 782 +6 1607 44 1998 16 1076 60 1677 0 1919 33 10+2 79 1635 14 1294 18 1007 72 ( 489 341278 +) 1976 74 1463 39 1172 74 98 64 1449E91161 57 994 55 1417 1241 1142 SO 1962 37 689 36 2676 GT 26615 1891 TT 666 62

Answer 1

Functional 9 houp Intens IR VALUES Frequency in cont Top to bottom 2960 - 2850 3100 - 30lo 3300 strona | strona AIKanes Alkenes Alkynes Alomatic strongly 3150 - 3020 strong weax Type of vibration Hydoro Carbons: C-H Stretching C-H stretching C+ Stretching CH Stretching C-H Bending C-H Bending C-H Bending e-c Stretching CEC Stretching C=C Stretching c = c Stretching Alcohols: Alkanes Alkenes Aromatic Alkanes 2110 - 2720 1450 - 1315 weak 100D - 650 wear 1200 - 800 Strong 1675 - 1600. 16oo - 1450 2260-2100 to medium weak . Alkenes Aromatic Alkynes medium -OH stretc Alcohols Strong 3650 - 3580 3550 - 3200 Strong Bond -OH St oboru 2700 - 2500. Weak. acids 1680-1630 stron - OH stretching Hydrogen -OH Stretching carboxylie 2700 - 2500 Carbonyls: & stretching Amide & stretching carboxylic & stretching ketones - & stretching Aldehydes 1740-1720, stron & Stretching esters 1750-1730 stron & stretching Anhydride 1790- 1740 Stror 1725 - 17005 Stron acid 1725 - 1705 Stvor (sym)

Sc o tton KOOK Soms wear Strong N-H Stretchi type of functional DR VALUES vibration group Frequency in cm Intending & stretching Acid chloride 1190 - stretching Anhydride 1850- 1800 | CA sym) Amines : N-H stretching i'amine, amida 3600 medium N-H stretching i amine, Hydrogen bonding 3400 20 amine 3500 - 3300 N-H stretching 20 amine, amide, 3310-3140 lange Hydrogen bonding Can stretching Nitriles 2260-2220 very shayd NO2. Stretching No.2 (sym) / 1315 - 1215 No. Casym) 1620 - 1535 c-o stretching ether ether 1300 - 1000 C-N Stretching Amine 1200 - 1000 Can stretching oxime I 1690- 1640 } stretching sulphones 1050 5-H Stretching Mer captanes 2550 c-x stretching Alkyl halide 1000 & <667 x = halides (finger print region)

When approach an IR spectrum of an unknown compound, it is generally a good idea to consider the six types of absorption bands (1) the O-H stretch, (2) the carbonyl stretch, (3) triple bonds (4) double bonds, (5) C-H stretches, and (6) N-H stretches. A carbonyl-stretch absorption band is quite strong and relatively narrow in IR spectrum. Its stretch absorption can appear-generally between 1600 and 1800 cm .

TFRH3ΗΙΤΤΑΙΕΙ; W.C=C-H str> C=O stretch Aromatic C=C