00:02
This is the answer to chapter 17, problem number 37 from the smith organic chemistry textbook.
00:09
And this problem asks us about purine, which is a heterocycle that occurs commonly in the structure of dna.
00:19
It's a main component of two of the four base pairs.
00:23
And so we're asked several things about purine.
00:27
So first we're asked, how is each n - atom hybridized? and so, oops.
00:36
And so all the nitrogen atoms here are going to be sp2 hybridized.
00:47
So all the nitrogens are sp2 hybridized.
00:51
So then in part b, we're asked, in what type of orbital does each lone pair on a nitrogen atom reside? and let's see.
01:12
Okay, so for this one, this one, and this one, the loan pairs, so i'll say the arrowed ones, the loan pair is in an sp2 hybridized orbital.
01:40
For the non -arroed nitrogen.
01:46
So for the one that doesn't have an arrow, the lone pair is going to be in a p orbital.
01:56
So lone pair in a p orbital...