chem372w08hw1 - Du 100 A Ch m D D O Tra nsmittance N O 0...

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Unformatted text preview: Du 100 A Ch m D D O Tra nsmittance, % N O 0 Chem 372 Winter 2008 Homework Assignment #1 e at class on Tuesday January 15th. 1. In each of the following cases extract from the IR spectrum as much information as possible and by combination with the other data provided suggest a structure for the compound. More than one possibility may exist in each case. (a) The highest mass peaks in the mass spectrum of an optically active compound were found at m/z 92 and 94 with an intensity ratio of 3:1. Its IR spectrum is shown 600 below. 1 1 4000 3400 3000 2600 2200 2000 1800 1600 1400 1200 1000 800 Wavenumbers, cm" (499 Cg,’/§[email protected] .u uuuuuuul u- . u I-I— .. .. I IIIII III-I .1 ”1.91950 !';O.I|-p : : NEAT 3150 “r- ‘a 3 . , 5/17" '5" [I 3‘ 49% 3m 1000 I500 moo ha (‘37 C4 Hga "vs-yawn” I.- e a: I I.- {—i l 19 2' ,- 9 :- VVVHJJJ. o P” : ' HEAT 3 : 219/;“9 rug- 3 --—-—-—I—r—-—- '- —l - .'.- -.+'I - hm": “a” 3500 2 000 Iran mac ‘00 Z ” / 3 '° 9.10 agar : " 14w 974’ i - (7.75 I 1;, kg 66 ‘5 m aw ‘ lég” plea 37400 28» NW ”/5299 ”'9, 9), Jfifa 2. You are givena list'of NINE compound structures and THREE infrared spectra. Match up each Spectrum with a structure showing clearly in each case why none (0 ‘ / ‘/ 0H k0“ M E T m 3 dc K/H 'D E fl . 0H A, 0 \/ W“ O, (X l I 0 __ O H F G of the other structures is an appropriate choice. x TNMSHITTHNCE H1". mi _ U . g IIIIIIYIMIW IIMIIlil- I ...
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