Draw three-dimensional representations of the following compounds. Which have asymmetric carbon atoms? Which have no asymmetric carbons but are chiral anyway? Use your models for parts (a) through (d) and any others that seem unclear.
(a) 1,3-dichloropropadiene (b) 1-chlorobuta-1,2-diene
(c) 1-chloro-3-methylbuta-1,2-diene (d) 1-chlorobuta-1,3-diene
There is no asymmetric C atoms in this given molecule but it has chiral C atom.
Three dimensional picture of 1,3-dichloropropadiene is given below,
In this 3D structure it has been found that, there is no plane of symmetry because all the molecules are present in different planes.
There is no asymmetric C atoms but the molecule is chiral.
It is a planar molecule , thus there is no asymmetric C atom.