00:01
Problem 9 .17 asks us to explain the reasons for why we do not have a cyclopentine molecule.
00:10
Now, first off, let's think about a triple bond.
00:15
Triple bond is composed of two pi bonds and one sigma bond.
00:28
This makes for a very rigid bond between the two carbons and also shortens the bond between these carbons.
00:38
So the bond is very tight.
00:41
And as you may know, cyclopentane in its normal position looks more like a boat.
00:49
It's kind of bent, something like this.
00:54
And this helps it to avoid steric strain between the hydrogens and carbons and also eliminates some torque.
01:03
The most comfortable angle for a cyclo compound is bonds of 100%...