Hi there @theorganicchemistrytutor, I'm sure you get this very often however I would like to congratulate you on your devotion to helping people like myself fundamentally understand algebra and chemistry. You cover a wide range of things I'm interested in and I am very thankful for your free lessons. You are one of the great channels out there that allow people to harness the power of self teaching, for free.
You are a legend to chemistry students around! I really don't know what I'd do without your videos that help immensely. My professor decides to teach this half ass and expect us to know it 100% for the exam.
im starting to undertand this after a week lmao thank you. I was feeling so lost and i cant even make a meeting with my professor cause i have severe social anxieaty :( so you literally just saved me
Seriously, I attented a whole semester of lectures about nmr spectroscopy (held by a physicist, considered the best of his field) and I did not understand a single thing. After watching this video I am pretty sure I will get through the exam.
Thank you so much for this video. The topics are explained in such a concise and clear way. Watching your videos has helped me appreciate the beauty of chemistry, I'm planning on rocking a JG hoodie when I ace my Orgo class!
There are no words to express how thankful I am for your devotion and hard work that have helped us (students) to understand difficult concepts from just watching your lessons. Gold bless your soul.
You’ve helped me a great deal in General Chem 1/2 and Organic Chem 1/2. I was wondering if you can cover Med. Chem? I’m going to Pharmacy School soon thanks too you. So i know i’ll need some help lol.
This so funny to me cause you should learn Med.Chem at Pharmacy School but instead you have to come here for some real help. All the best in Pharmacy School
We need teachers like him in our universities 🙏💕 those PhD holder professors can't teach like this , and only insult students by saying that , you guyz are not hardworking , you guyz are not paying attention , you guyz are just passing your time in university, you have no interest in studies ..bla bla bla 😑 but the reason they can't teach properly , they even make simple things so much difficult with their extraordinary explanation that either we get confused or we just give up by thinking that we are not intelligent .. and when we ask questions they start scolding Infront of everyone and make fun of us ...😤 We are not duffer students , we need right teachers who teach us without make us feel dumb !!!❤️🌟✨
You should open a college. College today ranked by how much research they have, how successful students graduate there are, but they really has problem on how good they teaching.
hi your explanation is amazingly easy to understand and the enormous amount of examples u furnish to understand the concept with a detailed mechanistic approach is invaluable
Well i'm about 5 months late but maybe this will help someone else... The carbon that has the score of 4 but is neighboring a tertiary carbon will end up having a higher "score". The other carbon with a score of 4 has a neighboring secondary carbon giving it a lower score than the other one. think of the neighboring carbon(s) as a tie breaker in these situations.
Can you do some problems that combine IR, H NMR, and C NMR? e.g. formula C5H8Cl2 what is the structure? IR (cm-1): 2950 1H NMR (δ): 1.4 (4H, triplet), 1.2 (4H, triplet) 13C NMR (ppm): 62 (singlet), 26 (triplet), 23 (triplet) i want to cry :( :(
Very helpful and made the concepts very clear and easy to understand. I would like to note, however, that the integration (peak height) of the C13 peaks is the result of the number of protons on the carbon not the number of equivalent carbons.
How can we see 13C peaks in a molecule containing large number of carbons? Even though only 1.1% of 13C exist The larger the molecule less likely all Carbon are 13C
Christ, this was so obvious I feel dumb! Killin' myself to figure out NMR and how to properly analyse the spectra, but I feel confident now, hopefully the exam will go fine! You've definitely helped me, you're a great tutor. Keep up the good work!
Can someone explain the 13C of 2,2,4trimethyl-1,3pentandiol.cuz this system wont work for that.and there are similar ch3 groups having different peaks.
I flunked my chem classes because my teacher didn't know how to teach. I did find a couple of tutors that got me to understand and went on to get a great job and helped others thru rough times in Math & chem.
wow you are one of the most intelectually deticated personels in relation of chemistry I've heard and seen of in a long time, your work and effot is amazing keep it up.
Thank you so much sir your explanation makes complex problems to lowest level and to be truth even lower primary students (grade 3) can understand it, what a great gifted from our God lord,, thanks my brother God bless you,, keep up the good work
Very helpful video! Thank you so much. I have a question. Do we get another peak If the adjacent nitrogen protonates for a certain percentage of the molecule (e.g. 10mol% of CH3-CH2-CH2-CH2-NH2 is protonated and form CH3-CH2-CH2-CH2-NH3+; do we see two separate peaks for the adjacent C of the N for these two molecules).
First of all, thank you for the perfect explanation, simple and clean. But i want to make a question: why does ketones have more cs than , for example, carboxylic acid? I mean : does not the electronegativity of Oxygen "take off" the electrons from the Carbon atom, reducing his screen for the external magnetic field, causing an increase of chemical shift ? I do not understand that. Thank you an keep it up !
I know too late for you, may be other needs this; it is secondary caron not tertiary... the role is how many carbon atom attached to that carbon, if only one it is primary, if 2 carbon the secondary and so on .... nitrogen has the same principle, how many carbons attached to that nitrogen atom... sorry for the delay
i am a chemistry student from Marburg university Germany. i really 100 percent appreciate the effort u use to bring such an understanding video. i may have wasted money in buying books but u are indeed a great Tutor. thanks
Even though the signal height is proportional to the number of identical H atoms in 1H NMR, in C13 NMR it doesn't work like that. because it affects so many factors that determine the number of identical C atoms present. So the height of a signal is not proportional to the number of identical C atoms in 13C NMR. So are these examples correct? please answer me....
Hi, for your example of 2-chlorobutane you labeled your carbon attached to the chlorine (b) as tertiary when in fact it is secondary. Halogens derivatives do not count to carbon hierarchy. The scoring system then does not work for the primary carbons of that molecule and the proximity to the chlorine now dominates the chemical shift values. In the ether example you made the same mistake with labeling a quaternary carbon when it is actually tertiary.
Wow, this video is incredibly informative and detailed. The explanation of carbon-13 NMR spectroscopy is clear and concise, covering everything from the basics of broadband decoupled C-NMR to DEPT C-13 NMR spectroscopy. The examples provided, such as 2-butanol and 2-methylbutane, really help to illustrate how to assign chemical shifts to different carbons given the C-13 NMR spectrum. I especially appreciated the discussion on how to propose a structure given the molecule and using factors such as IHD and the number of signals present in the spectrum. The video also does a great job of explaining the different chemical shifts of functional groups, including alkyl groups, halogens, amines, alkenes, alkynes, ethers, alcohols, benzene rings, aldehydes, ketones, esters, and carboxylic acids. The score system for ranking the chemical shifts of sp3 carbon atoms is also very useful. Overall, this video is a must-watch for anyone studying organic chemistry
Hey I just had to write a comment since you kind of saved my ass in quarantine with ALL of your spectroscopy videos I watched after having a breakdown over my so called "MSc.-Level-scipts"... Thank you so so so much.
Hello, I'm a college student and I'm studying Pharmaceutical Chemistry. I have been taught this 13C-nmr. I also have some homework related to it, but it's different from yours. Can you instruct me how to do it? Plus, can I have your email to discuss about this problems? Thanks!
Hi there. I am a pharmacy student at İnönü University in Turkey. I have a Pharmaceutical Chemistry Lab quiz tomorrow and I'll be able to do something about it thanks to you.
I just finished the 1hr and half lecture or tutorial, thank you so much!!!! The video is so amazing, I really appreciate your sharing! and I am so obsessing about your voice :D
very useful : ) one confusion: when you talking about the triple bond group example, I think the carbon with triple bond should be 3° not secondary carbon. Please check~ I learn all chemical analysis stuff by your video.
Organic Chemistry PDF Worksheets: www.video-tutor.net/orgo-chem.html
Full-Length Exams and Worksheets: www.patreon.com/MathScienceTutor/collections
Hi there @theorganicchemistrytutor, I'm sure you get this very often however I would like to congratulate you on your devotion to helping people like myself fundamentally understand algebra and chemistry. You cover a wide range of things I'm interested in and I am very thankful for your free lessons. You are one of the great channels out there that allow people to harness the power of self teaching, for free.
aww
You are a legend to chemistry students around! I really don't know what I'd do without your videos that help immensely. My professor decides to teach this half ass and expect us to know it 100% for the exam.
im starting to undertand this after a week lmao thank you. I was feeling so lost and i cant even make a meeting with my professor cause i have severe social anxieaty :( so you literally just saved me
Dude, you are better than khan academy and the handsome beard dude at teaching organic chem. Well for me atleast, keep it up bro
the handsome beard dude.. Do u mean professor Dave?
@@captainoaoaoa6908 Ooooh he knows alot about the science stuffff~~~
Eliott rintoul is also up there for chemistry
@@Exhalted1 if you're an a level student especially
@@sparky844 professor dave explains
Seriously, I attented a whole semester of lectures about nmr spectroscopy (held by a physicist, considered the best of his field) and I did not understand a single thing. After watching this video I am pretty sure I will get through the exam.
Thank you so much for this video. The topics are explained in such a concise and clear way. Watching your videos has helped me appreciate the beauty of chemistry, I'm planning on rocking a JG hoodie when I ace my Orgo class!
I can not thank you enough for everything you've taught me God bless you
There are no words to express how thankful I am for your devotion and hard work that have helped us (students) to understand difficult concepts from just watching your lessons. Gold bless your soul.
Respected Sir
You explained everything so systematically..... Wonderful job.... Thank you so much. 🙏🙏🙏
You’ve helped me a great deal in General Chem 1/2 and Organic Chem 1/2. I was wondering if you can cover Med. Chem?
I’m going to Pharmacy School soon thanks too you. So i know i’ll need some help lol.
I'm a Pharm.D student and I'm using his videos!
This so funny to me cause you should learn Med.Chem at Pharmacy School but instead you have to come here for some real help. All the best in Pharmacy School
We need teachers like him in our universities 🙏💕 those PhD holder professors can't teach like this , and only insult students by saying that , you guyz are not hardworking , you guyz are not paying attention , you guyz are just passing your time in university, you have no interest in studies ..bla bla bla 😑 but the reason they can't teach properly , they even make simple things so much difficult with their extraordinary explanation that either we get confused or we just give up by thinking that we are not intelligent .. and when we ask questions they start scolding Infront of everyone and make fun of us ...😤 We are not duffer students , we need right teachers who teach us without make us feel dumb !!!❤️🌟✨
Thank you for providing comedic relief by choosing to place a peak at 69 when you could have easily moved it.
When someone actually explains this stuff, it's not that bad. Thanks man!
you saved me. Had to understand nmr in 2 days to not fail my laboratory module...
Dude, my spectroscopy teacher’s salary should go to your wallet, thank you!
😂😂😂😂
You should open a college. College today ranked by how much research they have, how successful students graduate there are, but they really has problem on how good they teaching.
You are #1 in NMR, bro!
For example, #6, wasn't the carbon b a tertiary carbon with a score value of 3 due to 3 primaries around?
i am wondering the same
I am astonished to have the vedio. I love it.
This is so very thorough
hi your explanation is amazingly easy to understand and the enormous amount of examples u furnish to understand the concept with a detailed mechanistic approach is invaluable
It is more than helpful. Thank you
Why do I even show up to class
same
you are literally the best! thank you so much!
So how do you explain why at 10:48min why does a secondary carbon has a higher chemical shift than tertiary carbon if they both have a score of 4?
Well i'm about 5 months late but maybe this will help someone else... The carbon that has the score of 4 but is neighboring a tertiary carbon will end up having a higher "score". The other carbon with a score of 4 has a neighboring secondary carbon giving it a lower score than the other one. think of the neighboring carbon(s) as a tie breaker in these situations.
@@scottwatson6901 " but maybe this will help someone else" I was that someone, thank you king!
I love your videos. I hope you can make a living off of this because you deserve it!
Can you do some problems that combine IR, H NMR, and C NMR? e.g.
formula C5H8Cl2 what is the structure?
IR (cm-1): 2950
1H NMR (δ): 1.4 (4H, triplet), 1.2 (4H, triplet)
13C NMR (ppm): 62 (singlet), 26 (triplet), 23 (triplet)
i want to cry :( :(
All your videos are fantastic, thanks for your help. Can you make a review video for the ACS Organic Chemistry I and II exam?
Very helpful and made the concepts very clear and easy to understand. I would like to note, however, that the integration (peak height) of the C13 peaks is the result of the number of protons on the carbon not the number of equivalent carbons.
dude who are you ?? god?? what is your name
you are so stupid that you need god to make you understand the material
@@whatever9506 chill ahaha he was complimenting him
Nah , i'm stoopid thats why im watching this video
i STRUGGLED with this in ochem 1 and within an hour you've helped me understand it in ochem 2!! thank you!!!!
How can we see 13C peaks in a molecule
containing large number of carbons? Even though only 1.1% of 13C exist
The larger the molecule less likely all Carbon are 13C
Pls explain the N+1 splitting pattern for long condensed organic compound and for double, tripple bond
Christ, this was so obvious I feel dumb! Killin' myself to figure out NMR and how to properly analyse the spectra, but I feel confident now, hopefully the exam will go fine! You've definitely helped me, you're a great tutor. Keep up the good work!
are you can do a videos about IR & UV spectroscopy please please 😭
im confused. how come around 1:22:00 when he talks about H NMR he's not using the adjacent carbon's hydrogens to determine the split pattern?
You're a legend. Thankyou for being the reason im passing this class!
Great vid. One thing, it's pronounced "c-uh-pled" not "c-oo-pled"
why am i here i am still in high school
Thank you so much
I can't express words to say you thanks.
Very very good way of teaching
OMGGGGG!! Are you taking Orgo 2 now, anyways thank you sooo muchh! I love you...respect for you
"height plays an important role"
thank god that benzene ring is not over 5'10...
Why does 13C have such a wider range as compared to 1H NMR?
Can someone explain the 13C of 2,2,4trimethyl-1,3pentandiol.cuz this system wont work for that.and there are similar ch3 groups having different peaks.
I flunked my chem classes because my teacher didn't know how to teach. I did find a couple of tutors that got me to understand and went on to get a great job and helped others thru rough times in Math & chem.
thankyou for the hard work
wow you are one of the most intelectually deticated personels in relation of chemistry I've heard and seen of in a long time, your work and effot is amazing keep it up.
Great job...thank you.
It's very good video 👍
Thank you so much sir your explanation makes complex problems to lowest level and to be truth even lower primary students (grade 3) can understand it, what a great gifted from our God lord,, thanks my brother God bless you,, keep up the good work
Very helpful video! Thank you so much. I have a question. Do we get another peak If the adjacent nitrogen protonates for a certain percentage of the molecule (e.g. 10mol% of CH3-CH2-CH2-CH2-NH2 is protonated and form CH3-CH2-CH2-CH2-NH3+; do we see two separate peaks for the adjacent C of the N for these two molecules).
Thank you so much, I went through all the spectroscopy videos and I think I get it now.
Better than my prof ngl
You may have saved my grades :-)
There could be a 100 carbons in the room and 99 don't believe in you...
First of all, thank you for the perfect explanation, simple and clean. But i want to make a question: why does ketones have more cs than , for example, carboxylic acid? I mean : does not the electronegativity of Oxygen "take off" the electrons from the Carbon atom, reducing his screen for the external magnetic field, causing an increase of chemical shift ? I do not understand that. Thank you an keep it up !
Bc carboxylic acids have resonance
Any help please...what's the number of carbons does cyclohezone has on 13 cnmr
very helpful
I just love it..... Thank you so much for your heard work behind this masterpiece....
God bless you
at 42.04min why is b a quaternary carbon when it is attached to 3 c and 1 o atoms???????????!!
yeah thats definitely a mistake.
Yeah he‘s definitely wrong there
I JUST WANT TO SAY "THANK YOU!!!!!"
25:00 Why do you call the second carbon in 2-chlorobutane as tertiary, while later naming the first carbon in 1-chlorobutane as primary?
as far as I can tell, he is wrong.
I know too late for you, may be other needs this; it is secondary caron not tertiary...
the role is how many carbon atom attached to that carbon, if only one it is primary, if 2 carbon the secondary and so on .... nitrogen has the same principle, how many carbons attached to that nitrogen atom...
sorry for the delay
Thanks for the clear explanation!! It helps alot!!
i am a chemistry student from Marburg university Germany. i really 100 percent appreciate the effort u use to bring such an understanding video. i may have wasted money in buying books but u are indeed a great Tutor. thanks
Por qué no esta en español, ta muito legal o video mais não consigo entender muitas coisas
Thank you!!! :)
The answer for the ex 10: can be CH3-CO-CH(OH)-CH3 at 1:20:54 ??
Even though the signal height is proportional to the number of identical H atoms in 1H NMR, in C13 NMR it doesn't work like that. because it affects so many factors that determine the number of identical C atoms present. So the height of a signal is not proportional to the number of identical C atoms in 13C NMR. So are these examples correct? please answer me....
Thank you .thank you soo much for this...first time I understand to the best level..
Sir can you make video on 2 d nmr spectroscopy and please explain tocsy cosy hmbc hsqc spectra ? I will really appreciate it.
On voit tjrs un pic à 78 dans RMN c13 cela signifie quoi ? Et des fois se cache ??
Hi, for your example of 2-chlorobutane you labeled your carbon attached to the chlorine (b) as tertiary when in fact it is secondary. Halogens derivatives do not count to carbon hierarchy. The scoring system then does not work for the primary carbons of that molecule and the proximity to the chlorine now dominates the chemical shift values. In the ether example you made the same mistake with labeling a quaternary carbon when it is actually tertiary.
Wow, this video is incredibly informative and detailed. The explanation of carbon-13 NMR spectroscopy is clear and concise, covering everything from the basics of broadband decoupled C-NMR to DEPT C-13 NMR spectroscopy. The examples provided, such as 2-butanol and 2-methylbutane, really help to illustrate how to assign chemical shifts to different carbons given the C-13 NMR spectrum. I especially appreciated the discussion on how to propose a structure given the molecule and using factors such as IHD and the number of signals present in the spectrum. The video also does a great job of explaining the different chemical shifts of functional groups, including alkyl groups, halogens, amines, alkenes, alkynes, ethers, alcohols, benzene rings, aldehydes, ketones, esters, and carboxylic acids. The score system for ranking the chemical shifts of sp3 carbon atoms is also very useful. Overall, this video is a must-watch for anyone studying organic chemistry
The reason I love Ochem
Man U R amazing
Iam from iraq . I appreciate your explain ..thank you so much
3:36 Nice
33:53 Nice
RESPECT!!!! Thanks man! You nailed it as always
Sir , i have a humble request to u ,can u explain pavia book chapter 6 problem no. -15 plzz sir
u r ausome thank u😭💙
Lee Robert Hall Jessica Robinson David
Hey I just had to write a comment since you kind of saved my ass in quarantine with ALL of your spectroscopy videos I watched after having a breakdown over my so called "MSc.-Level-scipts"...
Thank you so so so much.
Where can i get more of such videos please?
@@nathanielukah5058 www.khanacademy.org/science/organic-chemistry/spectroscopy-jay
Hello, I'm a college student and I'm studying Pharmaceutical Chemistry. I have been taught this 13C-nmr. I also have some homework related to it, but it's different from yours. Can you instruct me how to do it? Plus, can I have your email to discuss about this problems? Thanks!
Thank you ! ❤❤❤❤
Hi there. I am a pharmacy student at İnönü University in Turkey. I have a Pharmaceutical Chemistry Lab quiz tomorrow and I'll be able to do something about it thanks to you.
@TheOrganicChemistryTutor At 29:25 Isnt carbon A a tertiary carbon, making the score of carbon B 4 which would give the higher chemical shift anyways?
I just finished the 1hr and half lecture or tutorial, thank you so much!!!! The video is so amazing, I really appreciate your sharing! and I am so obsessing about your voice :D
Many thanks for your edifying lectures on chemistry
EXCELLENT
Literally I go to class just for attendance and quiz sake
Very helpful and explanatory!
Thank you, all the way from the University of Peradeniya in Sri Lanka
my goat
Thank you so much sir for the detailed video .. stay blessed ✨
why alkyne have low 13C valu than alkene??
you really helped me,thank youu🥰🥰❤️
very useful : )
one confusion: when you talking about the triple bond group example, I think the carbon with triple bond should be 3° not secondary carbon. Please check~
I learn all chemical analysis stuff by your video.
A carbon with a triple bond cannot be bound to three R-groups and cannot therefore be a tertiary carbon, since a carbon atom cannot form five bonds.
I was wondering the same thing! Cb should have a score of 5 and Cc a score of 7.
42:23 carbon is tertiary not quaternary
I would like to thank you so so much
your videos makes me get an A in my Spectroscopy exams