Question

How can I draw alkynes?

Answer 1

You indicate the triple bond by three parallel lines between the two atoms, and the bond angle between the atoms attached to them should be 180 °.

Explanation:

Remember that he location of the triple bond is indicated by the number of the first carbon atom of the triple bond.

If the triple bond is at atom `n`, the bonds to atoms `n-1`, `n`, `n+1` and `n+2` must all be in a straight line,

For example, the structure of hex-3-yne is

Note that atoms 2, 3, 4, and 5 are in a straight line.

Atoms 2 and 5 are `sp^3` hybridized , so the bonds to them are at angles.

EXAMPLE:

Draw the structure of non-4-yne.

Solution:

Draw atoms 3, 4, 5, and 6 in a straight line, with a triple bond between atoms and 4.

Add atoms 1, 2 and 7, 8, 9 as zig-zag lines to the skeleton structure.

And you have the structure of non-4-yne.