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MF: IR 3H Frequency 13C Chemical Shift 2H 1H DU: PPM Functional Group 6H Type of Bonding Environment tegration Multiplicity Interpretation

MF: IR 3H Frequency 13C Chemical Shift 2H 1H DU: PPM Functional Group 6H Type of Bonding Environment tegration Multiplicity Interpretation

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...
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Can someone please explain the chemical shift and type of bonding 

**Combined Spectral Problems: IR, ¹³C & ¹H NMR** *All spectra are either from SDBS (Japan National Institute of Advanced Industrial Science and Technology) or simulated.* - **Task:** Propose structures for the following problems. Use the tables on the following pages to show your work. --- **Compound C:** \( \text{C}_6\text{H}_{12}\text{O}_2 \) **Infrared (IR) Spectrum:** The IR spectrum shows multiple peaks indicating the presence of various functional groups. Key absorption bands should be analyzed, typically around: - 1700 cm⁻¹ for carbonyl groups (C=O). - 3200-3600 cm⁻¹ indicating O-H stretches, typical for alcohol or acid groups. **¹³C NMR Spectrum:** The ¹³C NMR spectrum displays several peaks across a range from 0 to 200 ppm, indicating different carbon environments. Key regions include: - ∼200 ppm for carbonyl carbon (C=O). - Peaks between 10-80 ppm may correspond to alkyl chains or alcohol carbons. **¹H NMR Spectrum:** (Not displayed in the image but typically analyzed for detailing proton environments.) Students are required to analyze the spectra to predict the structure of \( \text{C}_6\text{H}_{12}\text{O}_2 \) by correlating the functional groups with potential molecular structures. Use known chemical shift tables and IR frequencies to justify your proposed structure.
Transcribed Image Text:**Combined Spectral Problems: IR, ¹³C & ¹H NMR** *All spectra are either from SDBS (Japan National Institute of Advanced Industrial Science and Technology) or simulated.* - **Task:** Propose structures for the following problems. Use the tables on the following pages to show your work. --- **Compound C:** \( \text{C}_6\text{H}_{12}\text{O}_2 \) **Infrared (IR) Spectrum:** The IR spectrum shows multiple peaks indicating the presence of various functional groups. Key absorption bands should be analyzed, typically around: - 1700 cm⁻¹ for carbonyl groups (C=O). - 3200-3600 cm⁻¹ indicating O-H stretches, typical for alcohol or acid groups. **¹³C NMR Spectrum:** The ¹³C NMR spectrum displays several peaks across a range from 0 to 200 ppm, indicating different carbon environments. Key regions include: - ∼200 ppm for carbonyl carbon (C=O). - Peaks between 10-80 ppm may correspond to alkyl chains or alcohol carbons. **¹H NMR Spectrum:** (Not displayed in the image but typically analyzed for detailing proton environments.) Students are required to analyze the spectra to predict the structure of \( \text{C}_6\text{H}_{12}\text{O}_2 \) by correlating the functional groups with potential molecular structures. Use known chemical shift tables and IR frequencies to justify your proposed structure.
The image contains a proton NMR spectrum and various tables for analyzing chemical compounds. Below is the transcription and description: ### NMR Spectrum Description: - **X-Axis (PPM):** Ranges from 0 to 4 - **Peaks:** - At ~0.9 PPM: A peak labeled "6H" - At ~1.5 PPM: A small peak labeled "1H" - At ~2.2 PPM: A peak labeled "2H" - At ~3.8 PPM: A peak labeled "3H" ### Tables for Analysis: 1. **MF (Molecular Formula):** A blank space provided for writing the molecular formula. 2. **DU (Degree of Unsaturation):** A blank space provided for calculating the degree of unsaturation. 3. **IR Table:** - Columns: Frequency, Functional Group - Three blank rows for input. 4. **13C NMR Table:** - Columns: Chemical Shift, Type of Bonding Environment - Three blank rows for input. 5. **1H NMR Analysis Table:** - Columns: Chemical Shift, Integration, Multiplicity, Interpretation - Two rows for input, one partially visible. This setup is likely intended for a chemical analysis exercise where students can record and interpret various spectroscopic data related to organic compounds.
Transcribed Image Text:The image contains a proton NMR spectrum and various tables for analyzing chemical compounds. Below is the transcription and description: ### NMR Spectrum Description: - **X-Axis (PPM):** Ranges from 0 to 4 - **Peaks:** - At ~0.9 PPM: A peak labeled "6H" - At ~1.5 PPM: A small peak labeled "1H" - At ~2.2 PPM: A peak labeled "2H" - At ~3.8 PPM: A peak labeled "3H" ### Tables for Analysis: 1. **MF (Molecular Formula):** A blank space provided for writing the molecular formula. 2. **DU (Degree of Unsaturation):** A blank space provided for calculating the degree of unsaturation. 3. **IR Table:** - Columns: Frequency, Functional Group - Three blank rows for input. 4. **13C NMR Table:** - Columns: Chemical Shift, Type of Bonding Environment - Three blank rows for input. 5. **1H NMR Analysis Table:** - Columns: Chemical Shift, Integration, Multiplicity, Interpretation - Two rows for input, one partially visible. This setup is likely intended for a chemical analysis exercise where students can record and interpret various spectroscopic data related to organic compounds.
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