Homework Help is Here – Start Your Trial Now!
Science
Chemistry
A compound with molecular formula C11H1402 exhibits the following spectra ('H NMR, 13C NMR, and IR). Draw the structure of this compound. Proton NMR 11 10 Chemical Shift (ppm) Carbon NMR 30.9 126.5 130.4 -125.2 157.4 172.6 34.7 190 160 120 80 140 100 60 40 Chemical Shift (ppm)

A compound with molecular formula C11H1402 exhibits the following spectra ('H NMR, 13C NMR, and IR). Draw the structure of this compound. Proton NMR 11 10 Chemical Shift (ppm) Carbon NMR 30.9 126.5 130.4 -125.2 157.4 172.6 34.7 190 160 120 80 140 100 60 40 Chemical Shift (ppm)

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
See similar textbooks
icon
Related questions
Question
## Infrared (IR) Spectroscopy Analysis of Cyclohexanol ### Introduction Infrared (IR) Spectroscopy is a powerful analytical technique used to identify functional groups and molecular structures by measuring the vibration of molecular bonds. The specific IR absorption spectrum of a molecule is a characteristic fingerprint that can help determine the chemical composition and structure. ### Spectrum Description The provided spectrum depicts the IR absorption of Cyclohexanol. The x-axis represents the **Wavenumber (cm⁻¹)**, ranging from 4000 cm⁻¹ to 500 cm⁻¹, and the y-axis represents the **% Transmittance**, with a scale from 0 to 100%. ### Analysis of Peaks The spectrum shows various peaks corresponding to different molecular vibrations: 1. **Broad Peak around 3300 cm⁻¹:** This is indicative of the O-H stretching vibration, characteristic of alcohols like Cyclohexanol. 2. **C-H Stretching Vibrations (~2850-3000 cm⁻¹):** These peaks are indicative of aliphatic C-H bonds. 3. **C-H Bending Vibrations (~1350-1480 cm⁻¹):** These peaks represent the bending vibrations of the C-H bonds within the cyclohexane ring. 4. **C-O Stretching (~1050-1300 cm⁻¹):** This region shows vibrations associated with the C-O bond, further evidencing the alcohol functional group. ### Chemical Structure of Cyclohexanol Below the IR spectrum, the structure of Cyclohexanol is illustrated, showing a six-membered cyclohexane ring with an attached hydroxyl (OH) group: ``` OH | /\/\∩/\ ``` ### Conclusion The IR spectrum of Cyclohexanol clearly identifies the presence of an alcohol functional group through the broad O-H stretch and other characteristic vibrations. This powerful technique allows chemists to confirm the molecular structure and functional groups present in the compound. ### Interactive Content For further practice and understanding, you can edit the structure or explore other IR spectra examples by clicking on the "Edit Drawing" button provided.
Transcribed Image Text:## Infrared (IR) Spectroscopy Analysis of Cyclohexanol ### Introduction Infrared (IR) Spectroscopy is a powerful analytical technique used to identify functional groups and molecular structures by measuring the vibration of molecular bonds. The specific IR absorption spectrum of a molecule is a characteristic fingerprint that can help determine the chemical composition and structure. ### Spectrum Description The provided spectrum depicts the IR absorption of Cyclohexanol. The x-axis represents the **Wavenumber (cm⁻¹)**, ranging from 4000 cm⁻¹ to 500 cm⁻¹, and the y-axis represents the **% Transmittance**, with a scale from 0 to 100%. ### Analysis of Peaks The spectrum shows various peaks corresponding to different molecular vibrations: 1. **Broad Peak around 3300 cm⁻¹:** This is indicative of the O-H stretching vibration, characteristic of alcohols like Cyclohexanol. 2. **C-H Stretching Vibrations (~2850-3000 cm⁻¹):** These peaks are indicative of aliphatic C-H bonds. 3. **C-H Bending Vibrations (~1350-1480 cm⁻¹):** These peaks represent the bending vibrations of the C-H bonds within the cyclohexane ring. 4. **C-O Stretching (~1050-1300 cm⁻¹):** This region shows vibrations associated with the C-O bond, further evidencing the alcohol functional group. ### Chemical Structure of Cyclohexanol Below the IR spectrum, the structure of Cyclohexanol is illustrated, showing a six-membered cyclohexane ring with an attached hydroxyl (OH) group: ``` OH | /\/\∩/\ ``` ### Conclusion The IR spectrum of Cyclohexanol clearly identifies the presence of an alcohol functional group through the broad O-H stretch and other characteristic vibrations. This powerful technique allows chemists to confirm the molecular structure and functional groups present in the compound. ### Interactive Content For further practice and understanding, you can edit the structure or explore other IR spectra examples by clicking on the "Edit Drawing" button provided.
**Analysis of Chemical Structure Using NMR Spectroscopy** **Introduction:** Understanding the structure of organic compounds is vital in chemistry. Nuclear Magnetic Resonance (NMR) spectroscopy provides detailed information about the molecular structure. In this example, we analyze a compound with the molecular formula \( C_{11}H_{14}O_2 \) using Proton NMR (\(^1H \text{NMR}\)) and Carbon NMR (\(^{13}C \text{NMR}\)). **Proton NMR (\(^1H \text{NMR}\)):** The Proton NMR spectrum displays peaks corresponding to the different hydrogen environments within the compound. Below is a detailed observation: - Chemical Shifts (δ) in ppm: - A peak at approximately 9 ppm (singlet) indicates an aldehyde proton. - Peaks at approximately 7-8 ppm represent aromatic protons, indicating the presence of a benzene ring. The integration values (numbers above peaks) suggest the relative number of hydrogen atoms in each environment. **Carbon NMR (\(^{13}C \text{NMR}\)):** The Carbon NMR spectrum shows peaks corresponding to the carbon environments in the compound. Detailed observations include: - Chemical Shifts (δ) in ppm: - A signal at around 172.6 ppm suggests a carbonyl carbon, likely from a carboxyl or ester group. - Signals at 130.4 and 126.5 ppm suggest sp2 hybridized carbons, indicating aromatic carbons. - The signal at 30.9 ppm and 34.7 ppm indicates aliphatic carbon environments. **Conclusion:** By analyzing the NMR spectra, conclusions can be drawn about the structure of the compound. The presence of aromatic, aldehyde, and potentially ester functionalities are indicated. Detailed interpretation can help in deducing the complete molecular structure. **Exercises:** 1. Utilize the provided NMR data to propose a possible structure for the given compound \( C_{11}H_{14}O_2 \). 2. Discuss how each peak in the proton and carbon NMR corresponds to the structure of the compound. These exercises will enhance your understanding of interpreting NMR spectra for structural analysis.
Transcribed Image Text:**Analysis of Chemical Structure Using NMR Spectroscopy** **Introduction:** Understanding the structure of organic compounds is vital in chemistry. Nuclear Magnetic Resonance (NMR) spectroscopy provides detailed information about the molecular structure. In this example, we analyze a compound with the molecular formula \( C_{11}H_{14}O_2 \) using Proton NMR (\(^1H \text{NMR}\)) and Carbon NMR (\(^{13}C \text{NMR}\)). **Proton NMR (\(^1H \text{NMR}\)):** The Proton NMR spectrum displays peaks corresponding to the different hydrogen environments within the compound. Below is a detailed observation: - Chemical Shifts (δ) in ppm: - A peak at approximately 9 ppm (singlet) indicates an aldehyde proton. - Peaks at approximately 7-8 ppm represent aromatic protons, indicating the presence of a benzene ring. The integration values (numbers above peaks) suggest the relative number of hydrogen atoms in each environment. **Carbon NMR (\(^{13}C \text{NMR}\)):** The Carbon NMR spectrum shows peaks corresponding to the carbon environments in the compound. Detailed observations include: - Chemical Shifts (δ) in ppm: - A signal at around 172.6 ppm suggests a carbonyl carbon, likely from a carboxyl or ester group. - Signals at 130.4 and 126.5 ppm suggest sp2 hybridized carbons, indicating aromatic carbons. - The signal at 30.9 ppm and 34.7 ppm indicates aliphatic carbon environments. **Conclusion:** By analyzing the NMR spectra, conclusions can be drawn about the structure of the compound. The presence of aromatic, aldehyde, and potentially ester functionalities are indicated. Detailed interpretation can help in deducing the complete molecular structure. **Exercises:** 1. Utilize the provided NMR data to propose a possible structure for the given compound \( C_{11}H_{14}O_2 \). 2. Discuss how each peak in the proton and carbon NMR corresponds to the structure of the compound. These exercises will enhance your understanding of interpreting NMR spectra for structural analysis.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 5 steps with 4 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
NMR Spectroscopy of Organic Molecules
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
SEE MORE TEXTBOOKS