00:03
This is the answer to chapter 15, problem number 44, from the smith organic chemistry textbook.
00:11
And this problem is asking us to look at three molecules that each have a free radical in them, and to draw the possible resonance structures for each molecule.
00:26
And so remember to do that, we're just going to move the double bond and then move the radical.
00:34
And so for a, there's really only one resonance structure.
00:39
So the double bond can move.
00:42
And then the carbon that would then be bereft of an electron has the free radical.
00:50
And so that's what i've drawn here.
00:52
Again, and the blue arrows are showing electron movement.
00:56
And then so for b, as you can see, there are two possible resonant structures in addition to the starting structure.
01:06
And so i've drawn them...