Given this Diels Alder experimental procedure. Make IR assignments for the given IR Spectrum. **Experiment: Diels-Alder (D-A)****Title:** Diels-Alder Reaction (Otto and Kurt). Cycloaddition of Maleic Anhydride with Anthracene**Reference:** Hill, R. K.; Barbaro, J. *Experiments in Organic Chemistry* (2000, 2nd Ed) pp E7-1-3.**Purpose:** Synthesize 9,10-dihydro-9,10-ethanoanthracene-11,12-dicarboxylic anhydride---### Reaction Scheme:1. **Reactants:** - Anthracene - Maleic Anhydride2. The reaction occurs with "reflux".3. **Product:** - The resultant structure is 9,10-dihydro-9,10-ethanoanthracene-11,12-dicarboxylic anhydride.### Reagent Table:| Reagent (Source) | Mwt | mp °C | bp °C | (Fp) | mmol | Mass (%) | Density | Volume ||------------------------|---------|--------|-------|-------|------|----------|---------|--------|| **anthracene** (Acros) | 178.23 | 216-8 | - | (121) | 10.1 | 1.84 g (98%) | - | - || **maleic anhydride** (Acros) | 98.06 | 54-56 | 200 | (103) | 10.1 | 1.00 g (99%) | - | - || **toluene (anhyd.)** (Pharmaco) | - | 111 | - | - | - | - | 0.87 | 43 mL || **cycloadduct** | 276.29 | 261-2 | - | - | 10.1 | 2.79 g | - | - |**Date Revised:** 03/09/2010ssh#### Diagram Explanation:The schematic shows a Diels-Alder reaction between anthracene and maleic anhydride, indicating the reflux process used to form the cycloadduct. The structural formulae of the ### IR Spectrum of Maleic Anhydride**Description:**The graph displayed represents the infrared (IR) spectrum of maleic anhydride. It provides a visual representation of transmittance (%) versus wavenumber (cm⁻¹).**Axes:**- **Y-Axis:** Transmittance (%) ranging from 0% to 100%.- **X-Axis:** Wavenumber (cm⁻¹) spanning from 4000 cm⁻¹ to 600 cm⁻¹.**Key Features:**- The spectrum shows several distinct peaks at specific wavenumbers, indicating the presence of various functional groups within the molecule.- A major absorption peak is notable around the 1800 cm⁻¹ region, characteristic of C=O stretching vibrations found in anhydrides.- Other notable peaks appear below 1500 cm⁻¹, which may correspond to bending vibrations and other molecular interactions.**Chemical Structure:**Accompanying the spectrum is a structural diagram of maleic anhydride, emphasizing its cyclic anhydride form.This type of IR spectrum is useful in identifying and confirming the presence of maleic anhydride in a sample by analyzing its specific vibrational modes and structural fingerprint.

Infrared spectroscopy is one of the convenient technique to visualize the functional groups present…

Answered: IR spectrum of maleic anhydride 100 80…

IR spectrum of maleic anhydride 100 80 - 60 40 20 - 4000 3600 3200 2800 2400 2000 1800 1600 1400 1200 1000 800 600 Wavenumber (cm-1) Transmittance (%)

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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