Question

Chemical Formula C6H120 -5.87 1-5.85 5.84 5.83 5.83 18:$ 5.16 5.15 5.14 5.12 4.03 4.01 3.40 13.38 3.37 -1.59 1.57 1.00 0.98 -

150 140 - 133.78 130 120 - 116.92 110 100 90 80 f1 (ppm) - 73.55 - 70.02 ZO 60 50 40 30 - 22.93 20 - 10.62 100

  1. Write down problem number.
  1. Provide formula, HDI value, and a complete, chemically correct structure for each problem.
  1. Assign signals in the 1H and 13C spectra to specific atoms, identify structural units and/or functional groups.

Example:

Problem # 3

Formula: C8H8O2

HDI: 5

1H NMR: p-substituted Ar at 7.27-7.97 ppm, benzylic CH3 group at 2.42 ppm, COOH proton at 12.9 ppm

13C NMR: carbonyl C at 167.8 ppm (ester or acid), benzylic CH3 at 21.40 ppm, 4 remaining signals are Ar carbons, two of which are quaternary, typical of a p-substituted ring

Structure:

0 0
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Answer #1

A UUTUP 112. PALAUTER 2 The HDF of C6 412 0 = 12-12 +2 = 7 It NMR. eltz 82 5.8 ppm, multiplet, odbo 1 14 He= s~ 5.2 ppm, mul

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