Only typed solution Question 2. The cycloheptatrienyl cation was first prepared more than a century ago by reactionof Br with cycloheptatriene. Draw the molecular orbital diagrams for the cycloheptatrienylcation. Indicate if this compound is aromatic, non-aromatic or anti-aromatic using this energydiagram. Justify your answer.HHBrBr2Θ

A thorough explanation is given below.Explanation:1. Molecular Orbital Diagram (MO):The…

Answered: Question 2. The cycloheptatrienyl…

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter18: Aromaticity

Section: Chapter Questions

Problem 26CTQ

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Draw the energy diagram for cyclooctatetraene dianion , C8H8 (2-) , molecular orbitals. The polygon rule is helpful. Label each MO as bonding , antibonding, or nonbonding, and add the nonbonding line. Identify the LOMO, HOMO, LUMO and HUMO orbitals. Is this dianion aromatic , non aromatic or anti aromatic? Thank you!
Add electrons to your energy diagram to show the configuration of the cyclopropenylcation and the cyclopropenyl anion. Which is aromatic and which is antiaromatic?
3) In the mid-1930s, the German theoretical chemist Erich Hückel developed a rule that dealt with the aromaticity of various compounds, which became known as the Hückel Rule. Which (parts) of the compounds listed below are aromatic? Justify your answer based on Hückel's rule. You can treat the rings separately or together as you wish.
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.
1 i. What is Resonance Theory? Sate five conclusions that can be drawn from the theory. ii. State the two main experiments that were used to establish the extra stability of the benzene molecule. iii. What are the factors that confer Aromaticity to an organic molecule? iv. State the effects of substituents on a benzene derivative towards further aromatic substitution. V. Based on the above suggest the various types of substituents that can be attached to Benzene.
Five-membered aromatic heterocycles with one heteroatom undergo electrophilic substitutions preferentially at the α-position (C-2 and C-5) rather than at the β-position (C-3 and C-4). Explain?
Rank the following groups in order of decreasing priority. −F, −NH2, −CH3, −OH
Which of the following statements is FALSE? Select one: a. Aromatics are compound that are conjugated. b. The Cs and Hs in an aromatic compound are equivalent. c. The pi electrons are delocalized around an aromatic ring. d. None of the statements is false.
Answer the following questions for the non-aromatic compound. 1. is every compound cyclic? yes or no 2. is every compound conjugated? yes or no 3. is every atom with a p-orbital connected to atoms on both sides that have a p-orbital? yes or no 4. based on the orbital drawings, are all p-orbitals in the same plane? yes or no
Biphenyl has the following structure.(a) Is biphenyl a (fused) polynuclear aromatic hydrocarbon?(b) How many pi electrons are there in the two aromatic rings of biphenyl? How does this number compare with that for naphthalene?(c) The heat of hydrogenation for biphenyl is about 418 kJ>mol (100 kcal>mol). Calculate theresonance energy of biphenyl.(d) Compare the resonance energy of biphenyl with that of naphthalene and with that of two benzene rings. Explain thedifference in the resonance energies of naphthalene and biphenyl.
Which of the following criteria satisfies non-aromaticity? Choose whichever is applicable. (can be more than one answer) A. Continuous conjugation B. Noncontinuous conjugation C. Pi electrons are equal to 4n+2 D. Pi electrons are equal to 4n E. Planar geometry
Aside from the multiple ring systems shown in the table, search for 1 multiple ring aromatic compound and list down its properties, sources, and uses or applications.

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