Which of the following is not an aromatic com | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) To determine if a compound is aromatic,it must follow $H$ückel's rule ($4n+2$ $\pi$ electrons,where $n=0, 1, 2, ...$),be planar,and have a cyclic

Vedclass · Accepted Answer

Vedclass · Answer

(A) To determine if a compound is aromatic,it must follow $H$ückel's rule ($4n+2$ $\pi$ electrons,where $n=0, 1, 2, ...$),be planar,and have a cyclic conjugated system.$A$: Cyclopentadienyl cation has $4$ $\pi$ electrons ($n=1$ for antiaromatic,$4n$ rule). It is antiaromatic.$B$: Cycloheptatrienyl cation has $6$ $\pi$ electrons $(n=1)$,which is aromatic.$C$: Phenanthrene is a polycyclic aromatic hydrocarbon with $14$ $\pi$ electrons $(n=3)$,which is aromatic.$D$: Cyclopentadienyl anion has $6$ $\pi$ electrons $(n=1)$,which is aromatic.Therefore,the compound that is not aromatic is the cyclopentadienyl cation.

Which of the following is not an aromatic compound?

Similar Questions

The final product of the following reaction is ................
$C_6H_6 + 3Cl_2 \xrightarrow{\text{Sunlight}} ?$

The function of $AlCl_3$ in Friedel-Crafts reaction is

What will be the product $A$ in the reaction given below?

Which isomer of xylene can give three different monochloroderivatives?

The reaction is given as:
Naphthalene + Oxalyl chloride $\xrightarrow{AlCl_3} [X]$ $\xrightarrow{Na-Hg, HCl \text{ (excess)}} [Y]$
Product $Y$ is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module