Homework Chapter 13

Homework Chapter 13 - 5 H 10 O with the following 1 H-NMR...

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Name ___________________________________ H OMEWORK C HAPTER 13 1) How many signals would be present in the H-NMR spectrum of each of the following molecules? What would be the approximate chemical shift of each of these signals? Compound H Signals (mark H as a,b,c,d , etc…) Chemical shift (in ppm) for a, b, c, etc. . 2) Which hydrogens in the following molecules exhibit the more downfield signal relative to TMS in the NMR experiment? Explain. 3) Deduce the identity of a compound with formula C 3 H 3 Cl 5 with the following 1 H-NMR data: δ 4.5 m (triplet), δ 6.1 (doublet) (ppm). Attach THIS paper to the TOP of any other pages you may have used to answer the questions. 1
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4) Deduce the identity of a compound with formula C 4 H 7 BrO with the following 1 H-NMR data: δ 2.2 (singlet), δ 6.5 (triplet), δ 4.5 (triplet) (ppm). 5) Deduce the identity of a compound with formula C
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Unformatted text preview: 5 H 10 O with the following 1 H-NMR data: 1.1 (doublet), 2.2 (singlet), 2.5 (septet) (ppm). 6) Draw the 1 H-NMR spectrum for 4-bromo-2-pentanone (shown): CH 3 CCH 2 CHCH 3 O Br 1 2 3 4 5 6 7 8 9 10 o chemical shift (ppm) 7) Draw the 1 H-NMR spectrum for impure 4-ethylphenol HO CH 2 CH 3 1 2 3 4 5 6 7 8 9 10 o chemical shift (ppm) 8) How many signals are expected in the proton spin-decoupled 13 C-NMR spectrum of cis-1,3-dimethylcyclopentane? Attach THIS paper to the TOP of any other pages you may have used to answer the questions. 2 9) How many signals are expected in the proton spin-decoupled 13 C-NMR spectrum of dichlorobenzene Attach THIS paper to the TOP of any other pages you may have used to answer the questions. 3...
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This note was uploaded on 05/09/2008 for the course CHE 3332 taught by Professor Primrose during the Spring '08 term at Baylor.

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Homework Chapter 13 - 5 H 10 O with the following 1 H-NMR...

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