4 abc will come. @Viraam_Rao @Chirag_Hegde
Yes and d also. Maybe it's also wrongly given
Yes geometrical also possible. Didn't see that option.
Ohh yes. All of them are possible.
In 7, shouldn't the nearer O make N3 more acidic?? I effect is distance dependent
Once N3 is protonated, there can be hydrogen bonding between oxygen and the added H. This factor probably makes 3 more favourable for protonation than 4, making 3 more basic.
@seshu_ram @Chirag_Hegde @Supreeta_Sen
What do you guys think about this?
Yes given answer is wrong I think. 4>3. In addition +I effect is acting on the adjacent N (which is close to N4) so electrons are present on N2 already therefore I don’t think electrons will move from N4 at all. On the other hand due to higher EN N3 electrons might move towards Oxygen due to -I.
I’m not sure about this. Would need the opinion of others,
@Viraam_Rao if the answer is right, yours is the only probable explanation.
Should consult some teacher here.
Yeah. However, seems somewhat like a secondary factor in comparison to inductive to me. Most of us would compare inductive first rather than H bond generally.
Someone should either check for the answer of the same question in another book or ask a prof.
I guess @Viraam_Rao bro is right with the H-bonding explanation. Nothing else could possibly explain it, if the answer is correct.
I guess I effect is not considered due to the distance.
I effect is considered until the 3rd atom from the I group, right?Then it should work for N3
@Shreyas_Kumar yes but it's effect get weak with increase in the number.
Also, my teacher had told that best way for basicity is checking stability of C. Base.
Why is it wrong?
On moving 1 atom from N3 and N4 we get the same grp(i.e same I effect)
On moving 2 atoms , we get an sp2 C and and N. anytime the -I of N is more then -I of sp2 C
Hence N3 wud be more basic than N4 imo.
Bro I don’t think so, yes it will weaken undoubtedly. But it cannot be ignored entirely. However I find some correctness in @Viraam_Rao ‘s reasoning.
Yep, you are right. Totally overlooked -I eff from N.
There should be no case of H-bonding after protonation on N3, nitrogen is less EN. than O, which will hinder H-bonding because the partial positive charge generated will not be sufficient to form stable H bond, right?
And the carbonyl group has more -I than N, right?
Inductive effect comparison is done using DNP.
Distance > No. Of Group > Power.
First check distance, then no. Of group and then Power.
That's what our teacher told.
Please try other questions also