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1. For following IR spectra: A. Identify the functional groups and bond types present in the molecule. B. Label peaks in the IR spectra below 2-METHYL-2-BUTENE LOD 50 D. 4000 3000 2000 1500 1000 50 NAVENUMBERI

1. For following IR spectra: A. Identify the functional groups and bond types present in the molecule. B. Label peaks in the IR spectra below 2-METHYL-2-BUTENE LOD 50 D. 4000 3000 2000 1500 1000 50 NAVENUMBERI

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
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**Task: Analysis of IR Spectra for 2-Methyl-2-Butene** 1. **For the following IR spectra:** A. Identify the functional groups and bond types present in the molecule. B. Label peaks in the IR spectra below. ### IR Spectrum Analysis #### Graph Description - **Title:** The IR spectrum is labeled for "2-Methyl-2-Butene." - **Chemical Formula:** The formula given is C₅H₁₀. - **Y-Axis:** Transmittance (%) - **X-Axis:** Wavenumber (cm⁻¹), ranging from 4000 to 400 cm⁻¹. #### Key Peaks to Analyze 1. **Around 3000 cm⁻¹:** - **Peak(s) type:** Indicates the presence of C-H bonds. Specifically, peaks just below 3000 cm⁻¹ often correspond to sp³ C-H stretches, while those above 3000 cm⁻¹ are characteristic for sp² C-H stretches (indicative of alkenes). 2. **Around 1650 cm⁻¹:** - **Peak(s) type:** This peak is typical for C=C bond stretching, which is expected in an alkene like 2-Methyl-2-Butene. 3. **From 1400 to 1000 cm⁻¹:** - **Peak(s) type:** Various peaks in this region suggest C-C stretching and bending, as well as skeletal vibrations in hydrocarbons like alkenes. 4. **Below 1000 cm⁻¹:** - **Peak(s) type:** This region may include C-H bending vibrations and possible skeletal C–C vibrations within the alkene structure. ### Conclusion The IR spectrum for 2-Methyl-2-Butene displays characteristic peaks for an alkene, including C=C stretching and sp² C-H stretching. Such analyses are crucial for confirming the presence of specific functional groups within organic compounds.
Transcribed Image Text:**Task: Analysis of IR Spectra for 2-Methyl-2-Butene** 1. **For the following IR spectra:** A. Identify the functional groups and bond types present in the molecule. B. Label peaks in the IR spectra below. ### IR Spectrum Analysis #### Graph Description - **Title:** The IR spectrum is labeled for "2-Methyl-2-Butene." - **Chemical Formula:** The formula given is C₅H₁₀. - **Y-Axis:** Transmittance (%) - **X-Axis:** Wavenumber (cm⁻¹), ranging from 4000 to 400 cm⁻¹. #### Key Peaks to Analyze 1. **Around 3000 cm⁻¹:** - **Peak(s) type:** Indicates the presence of C-H bonds. Specifically, peaks just below 3000 cm⁻¹ often correspond to sp³ C-H stretches, while those above 3000 cm⁻¹ are characteristic for sp² C-H stretches (indicative of alkenes). 2. **Around 1650 cm⁻¹:** - **Peak(s) type:** This peak is typical for C=C bond stretching, which is expected in an alkene like 2-Methyl-2-Butene. 3. **From 1400 to 1000 cm⁻¹:** - **Peak(s) type:** Various peaks in this region suggest C-C stretching and bending, as well as skeletal vibrations in hydrocarbons like alkenes. 4. **Below 1000 cm⁻¹:** - **Peak(s) type:** This region may include C-H bending vibrations and possible skeletal C–C vibrations within the alkene structure. ### Conclusion The IR spectrum for 2-Methyl-2-Butene displays characteristic peaks for an alkene, including C=C stretching and sp² C-H stretching. Such analyses are crucial for confirming the presence of specific functional groups within organic compounds.
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