Draw the resonance structures for the following compounds.
Question:

Draw the resonance structures for the following compounds. Show the electron shift using curved-arrow notation.

(a) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{OH}$

(b) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}$

(c) $\mathrm{CH}_{3} \mathrm{CH}=\mathrm{CH}-\mathrm{CHO}$

(d) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHO}$

Solution:

(a) The structure of $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{OH}$ is:

The resonating structures of phenol are represented as:

(b) The structure of $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NO}_{2}$ is:

The resonating structures of nitro benzene are represented as:

(c) $\mathrm{CH}_{3} \mathrm{CH}=\mathrm{CH}-\mathrm{CHO}$

The resonating structures of the given compound are represented as:

(d) The structure of $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CHO}$ is:

The resonating structures of benzaldehyde are represented as:

(e) $\mathrm{C}_{6} \mathrm{H}_{5} \mathrm{CH}_{2} \oplus$

The resonating structures of the given compound are:

(f) $\mathrm{CH}_{3} \mathrm{CH}=\mathrm{CH} \mathrm{CH}_{2} \oplus$

The resonating structures of the given compound are: