an unknown has the formula C₆H₁₂O. The IR spectrum of this substance has a strong vibration near 1700 cm⁻¹ . Which structure below is consistent with these data? The image shows chemical structures labeled as I, II, III, and IV:I. A linear molecule with a hydroxyl (OH) group and a double bond in the carbon chain. It is a form of an unsaturated alcohol.II. A branched molecule with a carbonyl group (C=O). This is likely a ketone due to its positioning within the molecule.III. A cyclic ether with a five-membered ring and a methyl group attached to it. The presence of an oxygen atom in the ring classifies it as a cyclic ether or oxolane derivative.IV. A cyclic alcohol with a hydroxyl (OH) group attached to a five-membered ring. This indicates a cyclic structure similar to cyclopentanol.Each structure demonstrates different functional groups and structural arrangements, serving as a useful visual aid for understanding organic chemistry concepts related to alcohols, ketones, and ethers.

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Answered: an unknown has the formula C₆H₁₂O. The…

an unknown has the formula C₆H₁₂O. The IR spectrum of this substance has a strong vibration near 1700 cm⁻¹ . Which structure below is consistent with these data?

Introductory Chemistry: An Active Learning Approach

6th Edition

ISBN:9781305079250

Author:Mark S. Cracolice, Ed Peters

Publisher:Mark S. Cracolice, Ed Peters

Chapter13: Structure And Shape

Section: Chapter Questions

Problem 64E

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Concept explainers

Analyzing Infrared Spectra

The electromagnetic radiation or frequency is classified into radio-waves, micro-waves, infrared, visible, ultraviolet, X-rays and gamma rays. The infrared spectra emission refers to the portion between the visible and the microwave areas of electromagnetic spectrum. This spectral area is usually divided into three parts, near infrared (14,290 – 4000 cm-1), mid infrared (4000 – 400 cm-1), and far infrared (700 – 200 cm-1), respectively. The number set is the number of the wave (cm-1).

IR Spectrum Of Cyclohexanone

It is the analysis of the structure of cyclohexaone using IR data interpretation.

IR Spectrum Of Anisole

Interpretation of anisole using IR spectrum obtained from IR analysis.

IR Spectroscopy

Infrared (IR) or vibrational spectroscopy is a method used for analyzing the particle's vibratory transformations. This is one of the very popular spectroscopic approaches employed by inorganic as well as organic laboratories because it is helpful in evaluating and distinguishing the frameworks of the molecules. The infra-red spectroscopy process or procedure is carried out using a tool called an infrared spectrometer to obtain an infrared spectral (or spectrophotometer).

Question

an unknown has the formula C₆H₁₂O. The IR spectrum of this substance has a strong vibration near 1700 cm⁻¹ . Which structure below is consistent with these data?

The image shows chemical structures labeled as I, II, III, and IV:

I. A linear molecule with a hydroxyl (OH) group and a double bond in the carbon chain. It is a form of an unsaturated alcohol.

II. A branched molecule with a carbonyl group (C=O). This is likely a ketone due to its positioning within the molecule.

III. A cyclic ether with a five-membered ring and a methyl group attached to it. The presence of an oxygen atom in the ring classifies it as a cyclic ether or oxolane derivative.

IV. A cyclic alcohol with a hydroxyl (OH) group attached to a five-membered ring. This indicates a cyclic structure similar to cyclopentanol.

Each structure demonstrates different functional groups and structural arrangements, serving as a useful visual aid for understanding organic chemistry concepts related to alcohols, ketones, and ethers.

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