Problem: Which peaks in your IR spectrum match the known structure of caffeine? for each diagnostic peak, you should identify its frequency in wavenumbers and the probable vibration (e.q 2950 cm, alkane C-H stretch). You should then write a short discussion that matches the diagnostic peaks to a functional group in caffeines structure. Known (Pure) Caffeine:Crude Caffeine: 

🤓 Based on our data, we think this question is relevant for Professor Daoudi's class at UCF.

FREE Expert Solution

We are asked which peaks in your IR spectrum match the known structure of caffeine.


The structure of caffeine is shown below: 

The common absorption frequencies of functional groups are shown below : 



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Problem Details

Which peaks in your IR spectrum match the known structure of caffeine? for each diagnostic peak, you should identify its frequency in wavenumbers and the probable vibration (e.q 2950 cm, alkane C-H stretch). You should then write a short discussion that matches the diagnostic peaks to a functional group in caffeines structure. 

Known (Pure) Caffeine:

Crude Caffeine: 

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Infrared Spectroscopy Table concept. You can view video lessons to learn Infrared Spectroscopy Table. Or if you need more Infrared Spectroscopy Table practice, you can also practice Infrared Spectroscopy Table practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Daoudi's class at UCF.