**Title: Analyzing Spectroscopic Data for Structural Proposals****Introduction:**This educational page aims to guide students through the process of proposing a molecular structure based on various spectroscopic data, including Infrared (IR) Spectroscopy, Proton Nuclear Magnetic Resonance (¹H NMR) Spectroscopy, Carbon-13 Nuclear Magnetic Resonance (¹³C NMR) Spectroscopy, and Mass Spectrometry (MS). The following graphs are provided as part of the analysis.**Spectroscopic Data:**1. **Infrared (IR) Spectrum:** - **Description:** The IR spectrum showcases the absorption of infrared light by the sample as a function of wavenumber (cm⁻¹). - **Significant Peaks:** There are notable peaks present, each corresponding to different functional groups within the compound. Peaks around ~3000 cm⁻¹ suggest C-H stretching. Peaks below 1500 cm⁻¹ are usually indicative of fingerprint regions – unique to the specific compound. 2. **¹H NMR Spectrum:** - **Description:** This spectrum provides information about the hydrogen atoms present in the molecule, displayed as chemical shifts (δ) in parts per million (ppm). - **Notable Chemical Shifts:** - 7.192 ppm with 2H doublet (d) - 7.156 ppm with 2H doublet (d) - 4.837 ppm with 1H quartet (q) - 4.907 ppm with 1H quartet (q) - 2.322 ppm with 3H singlet (s) - 2.143 ppm with 1H singlet (s) - 1.475 ppm with 3H doublet (d) - 1.402 ppm with 3H singlet (s)3. **¹³C NMR Spectrum:** - **Description:** The ¹³C NMR spectrum provides insights into the different carbon environments within the molecule, displayed as chemical shifts (δ) in ppm. - **Notable Chemical Shifts:** The spectrum shows carbon signals ranging from 0 to 200 ppm. These shifts help elucidate the structure by revealing the presence and types of carbon atoms (e.g., carbonyl, aliphatic, aromatic).4. **Mass Spectrum (MS):** - **Description:** The mass spectrum indicates the mass

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ropose a structure that is consistent with the following spectra. Av 1206 7.192 7285 20 01-062 80 160 140 120 100 " com 80 2H (d) 60 40 2006 ما7.15. 2H (d) HAPARK ON 20 4.837 4.909 4.765 (21/12) 5 7.063 6 0 ppm Relative intensity 100- 80- 60- 20- 0- -4.692 10-14-3325 23 2.322 3H (s) 50 2.143 1H (s) 75 m/z 1.475 1.402 3H (d) 100 M+= 136 125

ropose a structure that is consistent with the following spectra. Av 1206 7.192 7285 20 01-062 80 160 140 120 100 " com 80 2H (d) 60 40 2006 ما7.15. 2H (d) HAPARK ON 20 4.837 4.909 4.765 (21/12) 5 7.063 6 0 ppm Relative intensity 100- 80- 60- 20- 0- -4.692 10-14-3325 23 2.322 3H (s) 50 2.143 1H (s) 75 m/z 1.475 1.402 3H (d) 100 M+= 136 125

Living By Chemistry: First Edition Textbook

1st Edition

ISBN:9781559539418

Author:Angelica Stacy

Publisher:Angelica Stacy

ChapterU2: Smells: Molecular Structure And Properties

Section: Chapter Questions

Problem 3RE

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