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A compound displays a prominent peak at 3400 cm-1 in its IR spectrum. The mass spectrum has a molecular ion with m/z of 74. The base peak at m/z = 45. Draw a structure that best fits this data.

A compound displays a prominent peak at 3400 cm-1 in its IR spectrum. The mass spectrum has a molecular ion with m/z of 74. The base peak at m/z = 45. Draw a structure that best fits this data.

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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### Compound Analysis: IR and Mass Spectrometry A compound displays a prominent peak at 3400 cm<sup>-1</sup> in its IR spectrum. The mass spectrum of the compound shows a molecular ion with m/z (mass-to-charge ratio) of 74. Additionally, there is a base peak at m/z = 45. Based on this data, draw a structure that best fits these characteristics. #### Infrared (IR) Spectrum: - **Prominent Peak at 3400 cm<sup>-1</sup>:** This typically indicates the presence of an O-H or N-H bond, which is characteristic of alcohols, phenols, or amines. #### Mass Spectrum: - **Molecular Ion Peak at m/z = 74:** Indicates the molecular weight of the compound. - **Base Peak at m/z = 45:** The most intense peak, possibly from a stable fragment of the compound. **[Dotted Box]**: "Select to Draw" – This is an interactive area to draw a proposed structure that aligns with the data provided. #### Considerations for Structure: - **O-H or N-H group**: Suggested by the IR peak. - **Molecular Formula Possibilities:** You may explore molecular formulas that match a molecular weight of 74. Possible candidates might include simple alcohols, amines, or other small molecules. - **Fragment Stability:** The base peak at 45 likely corresponds to a stable ionic fragment or a specific part of the molecule. To proceed, draw a chemical structure that aligns with these interpretations to help determine the likely identity of the compound.
Transcribed Image Text:### Compound Analysis: IR and Mass Spectrometry A compound displays a prominent peak at 3400 cm<sup>-1</sup> in its IR spectrum. The mass spectrum of the compound shows a molecular ion with m/z (mass-to-charge ratio) of 74. Additionally, there is a base peak at m/z = 45. Based on this data, draw a structure that best fits these characteristics. #### Infrared (IR) Spectrum: - **Prominent Peak at 3400 cm<sup>-1</sup>:** This typically indicates the presence of an O-H or N-H bond, which is characteristic of alcohols, phenols, or amines. #### Mass Spectrum: - **Molecular Ion Peak at m/z = 74:** Indicates the molecular weight of the compound. - **Base Peak at m/z = 45:** The most intense peak, possibly from a stable fragment of the compound. **[Dotted Box]**: "Select to Draw" – This is an interactive area to draw a proposed structure that aligns with the data provided. #### Considerations for Structure: - **O-H or N-H group**: Suggested by the IR peak. - **Molecular Formula Possibilities:** You may explore molecular formulas that match a molecular weight of 74. Possible candidates might include simple alcohols, amines, or other small molecules. - **Fragment Stability:** The base peak at 45 likely corresponds to a stable ionic fragment or a specific part of the molecule. To proceed, draw a chemical structure that aligns with these interpretations to help determine the likely identity of the compound.
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