00:01
Hi, mesocompounds are those molecules that has chiral centers, but it is a achyral overall due to the internal symmetry.
00:10
Chiral centers are those carbon atoms that are bonded to four different types of substituents.
00:17
Now, the first option is trans 1 -4 dimethyl cyclohexane.
00:25
To check whether it is a mesocompound or not, we need to draw its structure.
00:29
It has two chiral centers, this carbon and this carbon, but it contains a plane of symmetry.
00:37
If a line is passed through it, this part and this part is very symmetrical.
00:41
Therefore, it has an internal symmetry due to which it is an optically inactive.
00:46
Thus, we can say that it is a mesocompound.
00:49
The b part is cis 1 -3 dimethyl cyclohexane.
00:54
So again we will draw a cyclohexane ring.
00:57
So this is one methyl group, this is carbon 1, 2, 3.
01:03
And this is another.
01:05
When a line is passed through this point, symmetry is there and there are two karel carbon atoms...