Select all possible structures with a molecular ion at 55, an absorption in its IR spectrum at...

Question:

Select all possible structures with a molecular ion at 55, an absorption in its IR spectrum at ~2250 cm{eq}^{-1} {/eq} and no absorption in its IR spectrum above 3000 cm{eq}^{-1} {/eq}. Assume each compound has an sp{eq}^{3} {/eq} hybridized C-H absorption in its IR spectrum.

Infrared Spectroscopy

Infrared spectroscopy (IR) involves the interaction of infrared radiation with matter. Functional groups will behave (vibrate, stretch, flex, wiggle, basically move around) at different ranges on the spectra based on the type of functional group. This can be used to identify and study chemical substances.

The width and location of the peak in an IR is indicative of what functional group caused it. Alcohol and carboxylic acid peaks are very broad verses carbonyl peaks which are very narrow and sharp. Substituted benzene rings have peaks that correspond to the substitution pattern (Mono, para, meta, etc) in the fingerprint and overtone regions of the IR.

Answer and Explanation:

Answer and Explanation:

N-H peaks occur at 3300-3500{eq}cm^{-1} {/eq}, so that will eliminate all primary and secondary amines. Molecules 1, 2,...

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Infrared Spectroscopy & Molecule Identification
Infrared Spectroscopy & Molecule Identification

from AQA A-Level Chemistry: Practice and Study Guide

Chapter 2 / Lesson 13
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