**Question:** Which structure do you expect to have the longest λ_max?**Structures:**1. **Structure 1:** A cyclopentene ring with a conjugated diene system, where one alkene is exocyclic.2. **Structure 2:** A cyclopentane ring with a single alkene group attached.3. **Structure 3:** A cyclopentene ring featuring a conjugated dienic system.4. **Structure 4:** A cyclopentadiene ring with a fully conjugated dienic system.**Analysis:** The structures depict different levels of conjugation. λ_max refers to the wavelength at which maximum absorbance occurs in a compound's UV-Vis spectrum, usually correlating with the degree of conjugation. More conjugated systems typically have higher λ_max values due to lower energy transitions.- Structure 1 has a partially conjugated system with one exocyclic double bond.- Structure 2 has no conjugation.- Structure 3 has internal conjugation within the ring.- Structure 4 is fully conjugated.**Conclusion:** Structure 4 is expected to have the longest λ_max due to its fully conjugated diene system, which allows for extended electron delocalization and lower energy transitions.

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Which structure do you expect to have the longest Amax? 4 1

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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We are given 4 different molecules to select the one with the longest $λ_{m a x}$

Longer the conjugated system present in a molecule, larger is the wavelength it will absorb.

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