题目
题目

CHE 008B A01 SS1 2025 Lecture 4 - Assigning Aromaticity

多重下拉选择题

Assign each of the following compounds as: aromatic, non-aromatic, or anti-aromatic.     Compound A = aromatic Compound B = non-aromatic Compound C = non-aromatic Compound D = [ Select ] aromatic non-aromatic anti-aromatic Compound E = [ Select ] aromatic non-aromatic anti-aromatic Compound F = aromatic Compound G = non-aromatic Compound H = aromatic Compound I = aromatic  

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思路分析
To approach this problem, I will evaluate each labeled compound in turn and justify the given classifications based on aromaticity criteria: Hückel's rule (4n+2 π electrons for aromaticity, 4n π electrons for anti-aromaticity in a planar cyclic conjugated system), and non-aromatic for systems that are not fully conjugated or not cyclic/planar. Option by option reasoning begins with the compounds as listed in the prompt. Compound A = aromatic. Here, the ring system must be fully conjugated and planar with a 4n+2 π electron count. The provided label aligns with a classic aromatic pattern, reinforcing the designation. Compound B = non-aromatic. This......Login to view full explanation

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类似问题

Open Odyssey, click on the Labs (complete list) button at the top of the screen.  Choose Resonance of Benzene (F24).  Follow all of the directions (including those in the Questions section).  Answer the questions below for Hypothetical Benzene I & II (models from Energy calculations with constrained alternating double and single bonds). The high electron density surface indicates the presence of double bonds. The single bond length is 153 pm (picometers). The double bond length is 133 pm. The energy of the models is negative and greater than 600,000 kJ/mol.   Answer the questions below for Hypothetical Benzene (models from Equilibrium calculation with unconstrained carbon-carbon bonds). The C-C bonds have lengths of 138 pm and bond orders of 1.5 . Compared to Hypothetical Benzene I & II, the energy of this model is more negative indicating it is more stable .

Consider the following heterocycles (I - III)Which adhere to the rules of aromaticity?

Consider the following heterocycles (I - III)Which adhere to the rules of aromaticity?

Consider the following heterocycles (I - III)Which adhere to the rules of aromaticity?

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