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Which of the structures are UV active and expected to absorb radiation between 200 and 400 nm? A ☐C E B D F

Which of the structures are UV active and expected to absorb radiation between 200 and 400 nm? A ☐C E B D F

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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### Understanding UV Activity in Organic Structures #### Question 9 of 30: **Which of the structures are UV active and expected to absorb radiation between 200 and 400 nm?** ##### Options: - **A** - Structure: Cyclohexene - Characteristics: Contains a single carbon-carbon double bond within a six-membered ring. - **B** - Structure: Cyclohexene with an additional isolated double bond - Characteristics: Six-membered ring structure with two distinct double bonds. - **C** - Structure: Benzene - Characteristics: Aromatic ring with alternating single and double bonds, creating a conjugated system. - **D** - Structure: Cyclohexene with a side chain double bond - Characteristics: Addition of a double bond in a side chain attached to the six-membered ring. - **E** - Structure: Cyclohexadiene - Characteristics: Six-membered ring with two double bonds in a conjugated system. - **F** - Structure: Cyclohexene with a side chain double bond - Characteristics: Similar to D but with a different placement of the side chain containing the double bond. **Explanation of Graphical Structures:** 1. **A (Cyclohexene):** This structure has one double bond. It is not highly conjugated, thus it may not be very UV active. 2. **B:** Features two double bonds, but they are not in conjugation which lessens UV absorption around the range of 200-400 nm. 3. **C (Benzene):** Exhibits a fully conjugated six-membered ring, making it highly UV active within the specified range. 4. **D:** Contains an additional double bond attached to the cyclohexene ring, might show some UV activity. 5. **E (Cyclohexadiene):** This structure has conjugated double bonds, likely making it UV active. 6. **F:** This structure is similar to D; the non-conjugated addition reduces its likelihood of significant UV absorption within the range. **Conclusion:** Of the given structures, **Benzene (C)** and **Cyclohexadiene (E)** are highly likely to be UV active and absorb radiation between 200 and 400 nm due to their conjugated double bonds systems. Structures with isolated double bonds (
Transcribed Image Text:### Understanding UV Activity in Organic Structures #### Question 9 of 30: **Which of the structures are UV active and expected to absorb radiation between 200 and 400 nm?** ##### Options: - **A** - Structure: Cyclohexene - Characteristics: Contains a single carbon-carbon double bond within a six-membered ring. - **B** - Structure: Cyclohexene with an additional isolated double bond - Characteristics: Six-membered ring structure with two distinct double bonds. - **C** - Structure: Benzene - Characteristics: Aromatic ring with alternating single and double bonds, creating a conjugated system. - **D** - Structure: Cyclohexene with a side chain double bond - Characteristics: Addition of a double bond in a side chain attached to the six-membered ring. - **E** - Structure: Cyclohexadiene - Characteristics: Six-membered ring with two double bonds in a conjugated system. - **F** - Structure: Cyclohexene with a side chain double bond - Characteristics: Similar to D but with a different placement of the side chain containing the double bond. **Explanation of Graphical Structures:** 1. **A (Cyclohexene):** This structure has one double bond. It is not highly conjugated, thus it may not be very UV active. 2. **B:** Features two double bonds, but they are not in conjugation which lessens UV absorption around the range of 200-400 nm. 3. **C (Benzene):** Exhibits a fully conjugated six-membered ring, making it highly UV active within the specified range. 4. **D:** Contains an additional double bond attached to the cyclohexene ring, might show some UV activity. 5. **E (Cyclohexadiene):** This structure has conjugated double bonds, likely making it UV active. 6. **F:** This structure is similar to D; the non-conjugated addition reduces its likelihood of significant UV absorption within the range. **Conclusion:** Of the given structures, **Benzene (C)** and **Cyclohexadiene (E)** are highly likely to be UV active and absorb radiation between 200 and 400 nm due to their conjugated double bonds systems. Structures with isolated double bonds (
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