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Page 1: CHEM%212% NMR%Problem%Set%2 - …chemistry.bd.psu.edu/justik/CHEM 212/CHEM 212 NMR Problem Set 2.pdfCHEM%212% NMR%Problem%Set%2!! X% Spring!2014!! 1. ... 12 11 10 9 8 7 6 5 4 3 2 1

CHEM%212% NMR%Problem%Set%2!!

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1. In!this!set!formulas!are!not!provided.!!Functional!group!information!is!given!in!a!general!form.!!C=O!

may!indicate!an!aldehyde!or!ketone,!for!example.!!An!amine!can!indicate!1o,!2o!or!3o!amine.!!Carbon!

based!functional!groups!(alkane,!alkene,!alkyne!and!aromatic)!are!not!provided.!

!

2. For!each!NMR!follow!the!steps!in!order!to!start!elucidating!the!structure.!

• Determine!number!of!proton!families!

• Classify!resonances!by!chemical!shift!

• Determine!fragments!by!integration!(CH,!CH2,!CH3…etc.)!

!

3. When!finished,!look!at!your!answer!and!ask!yourself!if!given!this!compound,!would!you!observe!the!

NMR!you!were!given?!

!

Page! Formula!or!IR!Data! ! Page!! Formula!or!IR!Data!

1!! Br! ! 17! ester!

2!! COOH!&!Br! ! 18! C=O!

3!! Cl! ! 19! ether!

4!! OH!&!Cl! ! 20! ester!&!Br!

5!! C=O! ! 21! ester!

6!! COOH!&!I! ! 22! ether!!

7!! C=O! ! 23! ester!

8!! C=O! ! 24! C=O!

9!! Br!&!C=O! ! 25! ester!&!Cl!

10!! COOH!&!Br! ! 26! amine!

11! Cl!&!OH! ! 27! amine!

12! Cl!&!OH! ! 28! ester!

13! amine! ! 29! ester!

14! Br!&!amine! ! 30! amine!

15! Cl!&!OH! ! 31! ester!

16! C=O! ! 32! C=O!

! ! ! 33! Br!

!

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Offset: 0.4 ppm.

CDCl3 QE-300 2 2

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DMSO-d6 QE-300 6 6

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CHEM%212% NMR%Problem%Set%2!!

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1!!

!

8!!

!

15!

!

22!

!

29!

!2!!

!

9!!

!

16!

!

23!

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30!

!

3!!

!

10!!

!

17!

!

24!

!

31!

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4!!

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11!

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18!

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25!

!

32!

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5!!

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12!

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26!

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7!!

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!

Br O

HO

ClO

O

O

OHBrO O

BrO

O

OH2N

Cl

HO

O

Br O

OO

O

O

Cl

OHHO Cl

O

H

Cl

O

OH

O

O

OHClO N Br

I

O

OHH2N

O

O

BrNH2

O

H2N

Br

O

O O

O

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