13. Draw Frost circle (polygon-in-a-circle) diagrams for TI molecular orbital energy levels of the cyclopropenyl cation and anion. Label the respective orbitals as bonding or anti-bonding In both cases provide a rationale indicating whether the compound is aromatic, anti aromatic, or non-aromatic. You do not need to draw out orbital representations, just relative energy levels and occupying electrons. H H

13. Draw Frost circle (polygon-in-a-circle) diagrams for TI molecular orbital energy levels of the cyclopropenyl cation and anion. Label the respective orbitals as bonding or anti-bonding In both cases provide a rationale indicating whether the compound is aromatic, anti aromatic, or non-aromatic. You do not need to draw out orbital representations, just relative energy levels and occupying electrons. H H

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter21: Benzene And The Concept Of Aromaticity

Section: Chapter Questions

Problem 21.16P: Which of the molecules and ions given in Problem 21.15 are aromatic according to the Hckel criteria?...

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Similar questions

Following the instructions for drawing the energy levels of the molecular orbitals for the compounds shown in Figure 8.17, draw the energy levels of the molecular orbitals for the cycloheptatrienyl cation, the cycloheptatrienylanion, and the cyclopropenyl cation. For each compound, show the distribution of the p electrons. Which of the compounds are aromatic?
Following the instructions for drawing the energy levels of the molecular orbitals for the compounds shown in Figure 8.17, draw the energy levels of the molecular orbitals for the cycloheptatrienyl cation, the cycloheptatrienyl anion, and the cyclopropenyl cation. For each compound, show the distribution of the p electrons. Which of the compounds are aromatic?
Define Protons on Benzene Rings ?
Draw a molecular orbital diagram for the pi system of tetrazole (including the piacemen oi iis pi electrons) and provide an analysis of its aromaticity using Hückel's rule denoting whether tetrazole is in fact aromatic, antiaromatic, or nonaromatic. H N° Tetrazole b. Provide a picture of the Highest occupied Molecular Orbital (HOMO) and the Lowest Unnocupied Molecular Orbital (LUMO) of tetrazole depicting the phases of thep orbitals, the bonding, antibonding, and non-bonding interactions.
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26. Which of the following are consistent with the requirements for aromaticity? I. A system with delocalized л electrons in a ring. II. 4n л electrons in the ring. III. All the ring atoms must be carbons. IV. (4n+2) π electrons in the ring. A. I and II AR B. I and IV C. D. I, II, and III I, III, and IV
1/ Show how the participating p orbitals interact to form the highest energy pi molecular orbital of benzene. 2/ Use the polygon rule to draw the MO energy diagram of the cyclononatetraenyl anion. Assuming planarity, would this ion be aromatic or antiaromatic?
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Which of the molecules and ions given in Problem 21.15 are aromatic according to the Hckel criteria? Which, if planar, would be antiaromatic? 21.15 State the number of 2p orbital electrons in each molecule or ion.
5. Which of the following molecules is aromatic or anti-aromatic? Support your claim with an MO diagram and checking the molecule against the rules of aromaticity. CH
Select the most accurate statement about the following compound. The compound is aromatic because there are 4n+2 pi electrons. O The compound is aromatic because it is completely conjugated throughout the entire ring. O The compound is non-aromatic (not aromatic) because it is not planar. O The compound is anti-aromatic because there are 4n pi electrons.