Question
Explain why the following system are not aromatic?
Explain why the following system are not aromatic?
✓
Answer
Cyclo-octatetraene is not planar but is tub shaped. It is, therefore, a non-planar system having 8 n-electrons.
Therefore, the molecule is not aromatic since it does not contain a planar cyclic cloud having (4n + 2) n-electrons.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Hydrocarbon A (molecular formula is $\mathrm{C}_5 \mathrm{H}_8$ ) gave a white precipitate with ammoniacal silver nitrate. Oxidation of A with hot alkaline $\mathrm{KMnO}_4$ gave 2-methyl propanoic acid. What is the structural formula of A ?
→What is dipole moment? Explain with example.
At $298 \mathrm{~K} . \mathrm{K}_{\mathrm{p}}$ for the reaction $\text{N}_2\text{O}_4(\text{g})\rightleftharpoons2\text{NO}_2(\text{g})\ \text{is}\ 0.98.$ Predict whether the reaction is spontaneous or not.
→Liquid ammonia bottle is cooled before opening the seal. Why?
Write the reaction for the preparation of butane by (i) Wurtz reaction (ii) Kolbe's reaction.
Calculate the average atomic mass of hydrogen using the following data:
→|
Isotope
|
% Natural abundance
|
Molar mass
|
| ${ }^1 \mathrm{H}$ |
99.985
|
1
|
| ${ }^2 \mathrm{H}$ |
0.015
|
2
|
Like CO, why its analog of SiO is not stable?
In each of the following pairs of salts, which one is more stable?
1. Ferrous and ferric salts
2. Cuprous and cupric salts
1. Ferrous and ferric salts
2. Cuprous and cupric salts
- Name the most metallic element in second period and most non-metallic element.
- Name the element with (a) largest atomic radius, (b) smallest atomic radius in third period.
- Name the element having general electronic configuration $n s^2 n p^4$ in fourth period.
What is the hybrid state of each carbon in the following molecules?
→- $\text{CH}_2=\text{C}=\text{CH}_2$
- $\text{CH}_3\text{CH}=\text{CH}_2$
- $\text{CH}_3\text{CHO}$
- $\text{CH}_3\text{CH}_2\text{OH}$
- $\text{CH}_3\text{COOH}$