Organic Chemistry PDF Worksheets: www.video-tutor.net/orgo-chem.html Full-Length Exams and Worksheets: www.patreon.com/MathScienceTutor/collections

Might as well be giving you my tuition money… doing a better job then my teacher. Thanks for this!

@saadmmcsoud1596

5 жыл бұрын

same here

@alkhan5445

2 жыл бұрын

Than

@Mariiiam

2 жыл бұрын

Patreon it is then

at 5:38 - a simplified version of the n+1 rule was applied to get a quintet (5) for signal B. Even though most spectrums will show a signal that appears to be a quintet for this type of situation - it does not give the most accurate description of what is happening. The quintet signal is really an overlap of other signals. Proton A (3H) splits proton B into a quartet and Proton C splits proton B into a doublet giving us either a doublet of quartets (2 x 4) or a quartet of doublets (4 x 2) which gives us a total of 8 signals. Some spectrums won't show 8 signals but may show 5 due to an overlap of signals. Nevertheless, the simplified N+1 rule can still be used to help you get the right answer in some situations but it does not reflect what is truly happening in the molecule. A similar situation applies when protons B and D split the signal corresponding to protons C.

Super helpful on H-NMR, the night before the EXAM... I appreciate videos likes these.

@karinj5677

5 жыл бұрын

hope ur exam went well :)

Our teacher is literally giving us nmr (proton and carbon), mass spec, and ir and telling us to come up with a structure

@allieb3477

4 жыл бұрын

Same here. I´m afraid lol

@rishisolanki783

3 жыл бұрын

It's fun trust me😂

@Hehexddddd

3 жыл бұрын

Just google the molecular formula and add the functional group u obtained from ur ir then google should be smart enough to do ur work for u

@amacgregor92

3 жыл бұрын

@@Hehexddddd This won't help on the ACS

@ishaankulkarni849

3 жыл бұрын

Same here mate...just that the mass spec is missing..we have the molecular formula instead..

5 years after this video and you're still saving lives. My professor explained the doublet, triplet, etc as, "You look like like your neighbor on NMR. So does a Russian and an Italian look the same? No. But when they are neighbors on the NMR they look like each other." No idea what the hell he was talking about. Thank you for the simple explanation.

@Schoolerino-pj8pu

5 ай бұрын

that's kinda racist ngl

The fact that your voice is also so soothing makes this 10x better. Thank you.

What I love from u is that, despite oof how much I dont like this topic, you make me enjoy it. Thanks man!

"spin spin splittin" love how you say that, haha thanks for your help.. This channel gets me through life

As an O chem tutor there is nothing nicer than your videos to refresh my memory on the material I purposely forgot.

Bro, I was following you and understanding your lecture. Thank you.

You really are the chemistry god LOL. Thank you so much for creating these videos. I've been watching them since Gen chm I and now im in Orgo II. Sooooo helpful.

This helped me understand spin splitting way more than my class did. Thank you

Who else is feeling 100x better?

aced my spec test could not have done it without your help thanks so much again and again and again!!!!!!

Just wanted to say thank you for posting such great videos. Because of your reviews (and some work on this end internalizing your lessons), I did really well on the ochem portion of the DAT. And, now that I have to take ochem II, this video is about to save me the embarrassment of having forgotten literally everything I knew about NMR. Ha! So, yeah, thank you for taking the time to do such a great job. It's having a real, measurable impact on my life.

@TheOrganicChemistryTutor

7 жыл бұрын

Hi Nicole, I'm glad those videos prove very helpful to you. Thanks for posting this comment. I really appreciate it.

@mukundaneanthony1036

2 жыл бұрын

Hi Nicole

i had been learning this for weeks and didn't understand it until right before my spec exam, only missed 1! thank you !!!

Your lectures are always useful... thanks for being such a wonderful source of knowledge

Great method of teaching.a river of knowlege about chemistry.

Splitting patterns which you explained was really good;understood the exact concept and also after solving some problems..

I can google whatever i need and one of your videos will always pop up... THANK YOU!

you are a lifesaver. I go to lecture and it is all just a blur by the time I walk out & reread my notes. the text is useless. we have guided prctice on campus but we dont get through much in each session. in other words, I don't know what I would do without you!!

OChem midterm in 5min and what do I watch? Thank god for this guy.

Thanks for your teaching ❤️ i use your episode lots of the time and I solve my problems several times 🌹🌹🌹

Woooow 👏👏👏 you make it easier to understand organic chemistry. Thank you very much 😊

please make more videos on finding structure by looking at an H NMR spectrum with signals

at 13:48 why would it only be 2 signals and not 3? if you draw the line of symmetry aren't there 2 more groups unaccounted for?

You are extremely proficient at explaining concepts !

Thanks Mr, you people your really helping us a lot, like i can learn things even when iam still in the holiday

be blessed Mr i was following you are lesson actually i got new concept

Thanks so Much for the clarity. please make more videos. Grade saver!!!

Your video helped me a lot, thank you!

All respects dude , thanks alot for your help U are really making it easy to understand not like my teacher in class 🙄😑

I'm seeing this video after 5years of release... Thanks cause its very helpful

Thank you for this, you have saved my ass multiple times I have a question about the second multiple choice practice problem. I believe option "D" should have just 4 signals and not 5. 20:00, B and C should appear simultaneously. As soon as you can get back. Thank you!

So helpful thank you!!!

In the first question the ch2 has non equivalent hydrogen atoms next to it attached to ch3 and ch in different chemical environments so wouldn't complex spin spin coupling or signal splitting pattern occur so would the n+1 rule hold or can we just ignore it

Very useful video, thank you so much!

Love you Organic Chemistry Tutor!

Sir,you did'nt tell about chiral centre...there should be 5 signals in 1st example. is'nt .?

How is E 15:04 different than the Ds. The hydtogens are both attached to a carbon whose adjacent carbons are both secondary.

@emeka3033

3 жыл бұрын

Yes, I need clarification with this question as well

@5:17 Aren't the two protons on the CH2 different since they are diastereotopic?

Why 5:32 hydrogens B are not doubled of quartet ?

Wouldn't the Hydrogens on the CH2 next to the chiral carbon in the first example produce two different signals? Or am I mistaken? That was a chiral carbon bonded to the bromine, correct?

@austintuttle5723

6 жыл бұрын

Heather Begley ... Yep. Those hydrogen's are diastereotopic. He made a mistake

@drgrunental3865

6 жыл бұрын

Why is that?

@ladyinred396

5 жыл бұрын

You are right

@LadyShaydex

5 жыл бұрын

Why would the two hydrogens on the CH2 produce 2 different signals? They're in the exact same spot with the exact same effect. They are both 2 carbons away from bromine. So they should produce 1 signal

@raanoooshh9296

4 жыл бұрын

They're in the same chemical environment. They are attached to the same carbon atom so they would only show as one signal.

Shouldn't the protons on the B Carbon at 4:05 be a tad bit further downfield (say 1.2-1.3) due to being closer to a partially positive CH? Just like the CH3 is on the D Carbon.

do you a review video on NMR in HD?

Also, at about 5:45, why are you not complex splitting the B and C hydrogens? You're doing the n+1 rule, even though the environments (the adjacent beta-hydrogens on each side of them) aren't equivalent? Why??

I would really love to meet you some day. Thank you so much!!

You save my life. Thank you very much ❤

this was excellent, thank you so much

This man knows everything

@17:36 why isn't the C=O a signal? Wouldn't that make the compound have 4 signals? (You only marked 3)

I don't understand how the example at 15:00 has symmetry at where he put a dotted line. Can anyone help me out? I think he place a D and the E in the wrong place.

@alejandropinedarojas48

5 жыл бұрын

The pi electrons of the aromatic ring aren't localized as he draws it.

awesome video, just wondering... 5:30 because the a and c protons are not equivalent shouldn't the N+1 rule be applied individually to each proton to find the signals for b? that would give a doublet of a quartet right?

@kingkaigus3222

6 жыл бұрын

Carlos Del Carmen thats what i thought. I thought the rule was if a hydrogen has two adjecent atoms with hydrogens of different signals. Then the rule is (n+1)(m+1)

@drgrunental3865

6 жыл бұрын

@@kingkaigus3222 what's m?

@nessyandtot

5 жыл бұрын

no, they are too far apart. They have to be within 3 bonds of each other to split...within 4 bonds if there is a double or triple as one of the bonds

thnx a lot sir ..it help me a lot in Mphil

Please can you make a video on heterotopic, enantiotopic, diastereotopic, and homotopic hydrogens? It’s in the curriculum now.

You should make one on Carbon nmr

What if you don't know the chemical formula? What if all you have is the molar mass, IR and C and H NMR data?

@johnathancerda8976

4 жыл бұрын

Rule of 13

best video for this point so thank you💘

Better Understanding👌

why translation is not found in this video

Thanks a lot sir. You are great

Thank you so much for this

Much more love, much more respect bro.

pls make more videos o n this topic

Nice bro . keep it up

You are an angel, a lifesaver!!

Thank you so much 🌸🌸

Please make videos for C-NMR and Mass spectrometry. I am welling to pay for both videos. All I care about is to pass these two complicated topics

Thank you !!

Why @ 15:00 is E it’s own signal? Does it not have an identical chemical environmental to D with two adjacent H’s?

@raanoooshh9296

5 жыл бұрын

I did not understand that one either. It's adjacent to secondary carbons as well ...

@raanoooshh9296

5 жыл бұрын

I think I just figured that one out lol. It's more distant from the oxygen, you could compare it to the example before and see why that one had carbons with the same environment.

@LadyShaydex

5 жыл бұрын

Yes but it's a carbon further away from oxygen than D. You can't just look at the close neighboring atoms, you have to look at the whole molecule.

Saved my life❤️

My Great teacher...

thank you!

Thank you sm❤

Love your videos! Quick question, my prof specifically said never to add neighboring hydrogens (for e.g. In the first problem when you added 1H + 3H for a CH2 carbon), and that it wouldn't turn into a quintet but into a doublet of quartets, so where you just simplifying the problem for this video purposes? Does that still stand for the same thing? And is it wrong?

@TokiBird

6 жыл бұрын

I saw what you just said in another video and got confused as well

@alejandropinedarojas48

5 жыл бұрын

That's only when the magnetic ambience of the hydrogens differs, the n+1 rules fails in these cases.

so where can i mail you my degree?

Why doesn't the carbonyl carbon get a signal at 9:00?

@ernestogonzalez428

5 жыл бұрын

Paige Campbell Only carbons that have hydrogens directly bonded to them will get signals

You da REAL MVP

Bro you saved my life

thanks, you are the best

thank you sair my posay gonna pass O chem

thanks its a great v

I understood more in a 30 min video than i did in a whole month of class

Your amazing more video please ☺️

it was very helpful for me thanks a lot

Thank u mark wahlberg

Thank you 🙏🇧🇷

In the first example (4.25), A and D carbons are primer. Why one of them is 0.9 other one is 1.0??? Thank you for your videos.

@EEBADITYAPANDEY

3 жыл бұрын

the one which has 1.0 is more nearer to the electronegative atom so more deshielding (for 1.0 one) and so more magnetic field(or resonant frequency) is required.I hope that solves your doubt.

your the best

No captions?

why don't I ever see alcohol examples?

you saved my degree!

God bless you

What about OH and NH🤔🤔

you are a god amongst men

uR #Work is qreat

@amadiebuka8006

5 жыл бұрын

are we allowed to post videos too???

no captions? :(

i need subtittles please 😊

That was the video that saved my ass