Question

What is the formula of allyl isocyanide? How many sigma and pi bonds are present in it?

Answer 1

The formula of allyl isocyanide:

• The IUPAC name of allyl isocyanide is 3-Isocyano-1-propene.
• The formula of allyl isocynaide is ${\mathrm{C}}_4{\mathrm{H}}_5\mathrm{N}$.

The number of sigma ($\mathrm{\sigma }$) and pi ($\mathrm{\pi }$) bonds in allyl isocyanide:

• The structural formula of allyl isocyanide is given below.

${\mathrm{H}}_2\mathrm{C}=\mathrm{CH}-{\mathrm{CH}}_2-\mathrm{C}\equiv \mathrm{N}$

• From the structure of allyl isocyanide, it is clear that there are $5\mathrm{C}-\mathrm{H}\left(\mathrm{\sigma }\right),2\mathrm{C}-\mathrm{C}\left(\mathrm{\sigma }\right),1\mathrm{C}-\mathrm{N}\left(\mathrm{\sigma }\right),1\mathrm{N}-\mathrm{C}\left(\mathrm{\sigma }\right),1\mathrm{C}-\mathrm{C}\left(\mathrm{\pi }\right),2\mathrm{N}-\mathrm{C}\left(\mathrm{\pi }\right)\mathrm{bonds}$.

Therefore, there are $9\mathrm{\sigma }$ and $3\mathrm{\pi }$ bond is allyl isocyanide.