Organic Chemistry Some Basic Principles and Techniques - Result Question 24
####28. An organic compound $X$ (molecular formula $C_6 H_7 O_2 N$ ) has six carbon atoms in a ring system, two double bonds and a nitro group as substituent, $X$ is
[1990]
(a) Homocyclic but not aromatic
(b) Aromatic but not homocyclic
(c) Homocyclic and aromatic
(d) Heterocyclic and aromatic
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Solution:
- (a)
Hence it is homocyclic (as the ring system is made of one type of atoms, i.e. carbon) but not aromatic. As it does not follow $(4 n+2) \pi$ electron rule of aromaticity.
