Experiment 5b: Steam Distillation Compare your IR spectrum of your recovered oil

Question

Experiment 5b: Steam Distillation

Compare your IR spectrum of your recovered oil to the library spectrum of eugenol (first IR spectrum graph attached) and what are some attributes that could have affected your results. I have attached the IR's below:

PerkinElmer Spectrum Version 10.52 uesday, November 28, 2017 11:31 AM istrate uesday. November 28. 2017 1131 rator Date Sophia and l 38 70 65 60 31.27cm 50 1. 51.93%T 45- 85NT 151 4000 3500 3000 000650 cm-1 Sample 288 By Administrator Date Tue Administrator 288 Tuesday, Novem

Explanation / Answer

Recovery of eugenol

Comparing the IR spectrum of recovered oil (eugenol) with the pure eugenol oil sample showed,

the recovered sample of eugenol has a lower shift (3515 cm-1) of O-H stretching frequency than the pure sample (3525 cm-1) which could be due to higher amount of water left in recovered sample.

We also see more strong peak above 3000-3100 cm-1 in the recovered sample of eugenol showing more unsaturation present in the structure than the original structure of eugenol.

The fingerprint region shows almost the same pattern of peaks for both the samples.

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