Which of the following compounds are aromatic according to Huckel’s

1.	Which of the following compounds are aromatic according to Huckel’s rule?
Answer» A = Has 8π electrons, does not follow Huckel rule. Orbitals of one carbon atom are not in conjugation. It is not aromatic. B = Has 6π delocalised electrons. Hence, is aromatic. C = Has 6π electrons in conjugation but not in the ring. Non aromatic. D = 10π electrons in planar rings, aromatic. E = Out of 8π electrons it has delocalised 6π electrons in one six membered planar ring, which follows Huckel’s rule due to which it will be aromatic. F = 14 π electrons are in conjugation and are present in a ring. Huckel’s rule is being followed. Compound will be aromatic if ring is planar.

Which of the following compounds are aromatic according to Huckel’s rule?

Answer»

A = Has 8π electrons, does not follow Huckel rule. Orbitals of one carbon atom are not in conjugation. It is not aromatic.

B = Has 6π delocalised electrons. Hence, is aromatic.

C = Has 6π electrons in conjugation but not in the ring. Non aromatic.

D = 10π electrons in planar rings, aromatic.

E = Out of 8π electrons it has delocalised 6π electrons in one six membered planar ring, which follows Huckel’s rule due to which it will be aromatic.

F = 14 π electrons are in conjugation and are present in a ring. Huckel’s rule is being followed. Compound will be aromatic if ring is planar.

Discussion

No Comment Found

Related InterviewSolutions

Which salt of carboxylic acid will be required to prepare ethane by sodalime decarboxylation? Give equation for the reaction.
In order to get propane gas, which of the following should be subjected to sodalime decarboxylation?A. Sodium butyrateB. Sodium propionateC. Mixtures of sodium acetate and sodiumethanoateD. Sodium formate
A sample of petrol is a mixture of `30% n-` heptane and `70%` iso`-` octane . The sample has octane numberA. 70B. 30C. 15D. 35
Which of the following will have zero dipole moment ?A. `1,1-`DichloretheneB. `cis-1,2`DichloroetheneC. `trans -1,2-`DichloroetheneD. All have equal dipole moment
Which one is incorrect name ?A. PropyneB. But-2-yneC. Pent-3-yneD. But-1-yne
Acetylene is liberated by the electrolysis or an aqueous solution of:A. sodium acetateB. sodium succinateC. Sodium benzoateD. sodium fumarate.
Predict wrong option for stabilityA. `2,3-`Dimetylbut`-2-`ene`gt2-`Methylpent`-2-`eneB. trans`-`Hex`-3-`ene`gtcis-`Hex`-3-`eneC. cis`-`Hex`-3-`ene`gt` Hex `-1-`eneD. trans`-`Hex `-2-`ene`gt2-`Methylpent`-2-`ene
Which of the following is not an isomer of 3-methylbut-1-yne ?A. Pent-1-yneB. Buta-1,3-dieneC. Pent-2-yneD. Penta-1,3-diene
The electrophile, `E^(+)` attacks the benzene ring to generate the intermediate `sigma`-complex. Which `sigma`-complex is of lowest energy?A. B. C. D.
Friedel-Crafts alkylation is expected to proceed through carbocationic intermediate. What would be the alkylation products when Benzene reacts with cyclopropyl chloride under the presence of anhydrous `AlCl_(3)`?A. B. C. D.