4. General Instructions for the following problems (your instructor might give a

Question

4. General Instructions for the following problems (your instructor might give additional instructions): Each problema contains some combination of the following information: TR spectrum (with list of absorption frequencies), mass spectrum or molecular ion peak, major UV peak, element mass. On each IR spectrum, neatly label the major absorption peaks with the structural fragment which causes the absorption. Use the back of the page for calculation of molecular formula, notes, and the answer. DO NOT use the problem area for scratch work. Draw an expanded structural formula for the identified compound. Name the compound. For 2 of the six problems, attach a copy of published reference IR spectrum (either from an on-line or hard copy source) with all the major absorption peaks clearly marked. (Make sure that you do not submit a gas-phase spectrum if the problem set shows a liquid or solution- phase spectrum. Give proper citations to the source of the spectra. Consult the lab manual, the lab textbook by Pavia, et al., and the lecture textbook to help you with the analyses.

Explanation / Answer

4) It is alphatic compound.

from IR spectra it conatains carbonyl functional group

from uv spectra compoun is olefin

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