PS 11 Key - — ASSMNET) Woaem ' it” 1. In the space...

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Unformatted text preview: — ASSMNET) Woaem ' it” 1. In the space provided indicate whether the compound (a), (b) and (c) is an alkane, alkene, alkyne or an aromatic hydrocarbon. Be sure to mclude the i resonancéfifire’qfliienci‘és‘and assignments (e. g. “ an aliphatic C-H stretch, 1 xxxx cm“”) for all the absorption peaks that allowed you to make the decision. For each hydrocarbon spectrum, determine whether the compound is an alkane, an alkene, an alkyne, or an aromatic hydrocarbon. More than one unsaturated group may be present. wavelength ( pm) - 6 6.5 7 8 9l011|21416 (M \(e M? N 305/0 (r t1 g‘wc‘x Ch AwffiD (,th (gm-waist bx 4000 3500 .3000 2500 2000 1800 1600 1400 1200 1(X)0 800 600 wavenumber (cm") wavelengthfllm) 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7 8 9 101112 1416 2%” 4785 (j..- H m 11.0 Sher—,1 “980*”15‘0 C40 \09 1'10:th 0 4000350030002500200018001600140012001000800600 6 wavenumber (cm’l) wavelength (1.1m) 1002.5 3 3.5 4 4.5 5 5.5 6 6.5 7 8 9 101112 1416 g 80 a 60 g 40 0 ' E ‘“ I. . .‘k in y I a p 4000 3500 3000 2500 2000 1800 1600 1400 1200 1000 800 600 55th»? (1M rm;p‘-ux...,w 39,: {a 15:1,. wavenumber (cm’I) ‘7. - m M : m K _ “’1 ['55) —-V ‘jfj'fi‘t‘f 3n: ‘c’\ — 2. In the space provided list the functional group(s) present in the compounds the IR spectra of which are given below. Be sure to include the resonance frequenmes and assignments (e.g. “ an aliphatic C-H stretch, xxxx cm"”) for the absorption peaks characteristic for the given functlonal groups. ‘he infrared spectra for three compounds are provided. Each compound has on i e "‘ lore of the following functional groups: conjugated k ne, ester, amlt‘lfig nitrile, 3,: 35C triple bond. Determine the functiona group(s) in each compound. - wavelength (um) 2.5 3 3.5 4 4.5 S 5.5 6 6.5 7 8 l 9 101112 1416; l .w : z 2000 1800 1600 1400 1200 1000 800 wavenumber (cm—l) wavelength (pm) 2500 2000 1800 1500 [400 1200 1000 800 wavenumber(cm") wavelengthflun) . 4 4.5 5 5.5 6 6.5 7 8 9 101112 141 Ag“); 00 A) a; B’h'fi‘i in m N0?) 52' 0:0 ‘35???“ , W 0W apé £1 H 2}}.6; 4000 3500 3000 2500 20001300160014001200100030060‘!i wavenumber (cm") ‘ 3. Infrared spectrum of one compound from the list of structures given below is shown. Identify the correct structure. For each (!) structure shown below provide reasons why it DOES or DOES NOT fit the enclosed IR spectrum. Use the presence or absence of the characteristic absorption bands for various functional groups to support your argument !!!! (NO CREDIT WILL BE GIVEN IF THE DISCUSSION MISSING). PhCHzNHCH3 HOCHZCHZCHZNHZ (a) (b) (d) O Q" COZH (c) NH2 5451 4 33W Nab IA 30% - c—H Mth W‘WLH CH2=CHCH2CH2NH2 OCH3 28% - 2516b 0"“ auteur Swami/w. (f) ‘ O’l mm ~ amnesia, c: C§"re’xr,b\ is ~ . ‘ N443 »- cubunmlg ‘Wr @‘0 mam ...
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This homework help was uploaded on 04/17/2008 for the course CHEMISTRY 625 taught by Professor Waetzig during the Spring '08 term at Kansas.

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PS 11 Key - — ASSMNET) Woaem ' it” 1. In the space...

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