Takes you 11:30 minutes to explain the basics of NMR in a way that I understood compare to 3 hours in class. Your explanations are always so clear. THANK YOU!
I have just started a biochem graduate program and I'm learning about NMR. I have been off school since 2007, working with biology for the most part. Your channel is a life saver for me. Thanks a million times...
Thanks Leah, I'm finally understanding this topic. You are definitely an asset to education which I believe is a way to overcome poverty and injustice throughout this world. Teach on!
Thank you for explaining this. Orgo I was pretty easy, but now I’m starting Orgo II and NMR seems completely out of left field. This explains it much clearer!!!
The explanation of analyzing the NMR spectrum is simply great. I feel difficult to solve the NMR spectrum but now I understand the secretes of the NMR spectrum. Thank you friend....
I didn't realize that n stands for "neighbor"! But knowing this will help me remember what n stands for, because the word "neighbor" starts with an n! The hat trick was pretty clever too.
Hey Leah, :) . Am a student. And i am trying to learn the analytical techniques,a part out of my curiosity, but mostly for my survival in my chem lab. Hey, by the way i appreciate the time you spent for replying. Thanks again :)
I'm a high school student who's mark rides on my ability to analyse this. Thank you so much for explaining it so well. I'm going to go get that A now. XD
I have learnt more about NMR in 11minutes than I have in an entire semester of lectures... Your explanations are excellent and clear, my lecturer doubts i will pass my exam since shes better at picking on my mistakes than actually helping, however this has given me determination and more confidence to prove her wrong. Thank you :)
I am wondering about the example at 7:37. As if the CH2 is also bonded with other carbon chain (R-CH2CH3 in video), why should it be still triplet but not more when it should be also split by the neighbor H from R?
for the purpose of this example we assume that there is nothing else going on. This allows us to focus on simply understanding how these groups impact each other. the R or 'rest of the molecule' can be anything. This means it can or can't have hydrogen. We'll have to account for the splitting accordingly when presented with R specifics.
Ha, no I'm in O chem 1 if you can believe it! In our syllabus, we skip from chapter 5 (radicals , carbanions / cations), to chapter 12 and 13 ( IR, EM, NMR spec).
It was an interesting experience for me, 10 years ago when I was pursuing my MSc in Biotechnology. However, I have now shifted my career to education and I am currently doing my PhD in Education. I have moved from the field of Science to Social Science, but it's amazing how quickly time passes by!
at 3:21 the top two yellow protons are not equivalent. there is a chiral carbon at the connection to the methyl. thats why the 2 yellow protons are diastereotype protons. one is above and one below the ring. they are not equivalent. There are six types of different protons in this molecule.
@@Leah4sci your right... though i am still quite sure not all yellow protons are eauivalent. 2 face the methyl side of the ring while two are at the H side.
They 2 pairs of diastereotope protons. Substitution will lead to a diastereomer, as then the front c becomes chiral.Dont get me wrong, your video is great, but this first example is definately wrong. You could just get simulated spectrum from Chemdraw to check im right. Still love your content. Important to get more people to love chemistry. :D
It depends on the integral of the signal which is usually given or, if you evaluate a measured spectrum yourself (e.g. with the program MestreNova) the integrals of the signals can be ascertained manually.
Leah, at around the five-minute mark when discussing calculating the number of neighbors based on the number of peaks you see, you said at one point that subtracting one from the number of peaks equals the number of types of neighbors to the hydrogen of interest in the molecule. Did you misspeak? I just want to be sure I understood you correctly
Thanks for the recommendation. I post free videos as I have time and am always looking for suggestions. For more help with this topic in the meantime, contact me through my website: leah4sci.com/contact
You are adorable. Its been a long time since any chemistry video which is zero boring but exciting with cool HAT tricks. Gonna check your other videos too. Anyway thanks Leah :)
Takes you 11:30 minutes to explain the basics of NMR in a way that I understood compare to 3 hours in class. Your explanations are always so clear. THANK YOU!
same here
same here😊
same here
Right!!! She explained something in 11 minutes that my professor spend 4 separate lecture on.... and I understand it better from Leah
You're very welcome! I'm so happy to clear things up for you!
you're great since it was uploaded in 2013 me as a student can still benefit from your work. Thank you.
Glad I could help!
Wish people like you were getting my tuition money haha..
lol, happy to help!
I have just started a biochem graduate program and I'm learning about NMR. I have been off school since 2007, working with biology for the most part. Your channel is a life saver for me. Thanks a million times...
It's a Master in Biochemistry, and one of my first classes is Organic Spectroscopy.
@@veronicabenites3177 hows it going
You're very welcome, so happy I could help!
I learn more in 15 minutes of your videos than I do in 2 semesters worth of lectures... I’d rather pay you over my tuition 😂
:D you're funny! but thank you Leslie! All the best! :)
Thank you, thank you, thank you! I have a midterm this week that I didn't feel prepared for at all, until i started watching your videos. awesome.
You're very welcome!
Thanks Leah, I'm finally understanding this topic. You are definitely an asset to education which I believe is a way to overcome poverty and injustice throughout this world. Teach on!
Amen! Thank you!
I can't believe how simply you just made this for me. Thank you.
You're very welcome!
Ive been watching the same Khan academy for a few days and its hard to understand it sometimes. Thank you for this video. It really helped
So glad this helped you. Thank you for visiting leah4sci and You're welcome! :)
absolutely singlehandedly saving my orgo grade rn.
Happy to help!
I can’t believe you summed this up so well in 11 minutes while others took 3 hours and weren’t able to teach it correctly
So happy to help you understand!
Thank you for explaining this. Orgo I was pretty easy, but now I’m starting Orgo II and NMR seems completely out of left field. This explains it much clearer!!!
So happy to help you understand!
This is probably the easiest NMR tutorial I've ever seen. Thank you.
You're so very welcome!
If Leah Fisch was my lecturer I would never ever miss a Spectroscopy class.
Lovely video.
Happy to share and help!
so who's cramming for finals rn am i right
yo sameeeeeeeeee bless up fam
llDietryingll 🤗
Bless you. :)
you are right lol
2019 Here We Go
dammmmmmmmmmmmmm!!!Thank you Leah Fisch. I will nail that exam.Yes!!!
You're very welcome!
Oh my god this is magic. I was thought I was going to lose my A in Ochem all because of these damn NMR readings.
Fact. Those readings are too confusing.
So happy to help!
Thank you so much Leah! I have my exam tomorrow and this video helped a lot. :)
You're very welcome!
I swear I've watched this video over 20 times my last years of college, NMR never seems to go away
Thank you for following :)
The explanation of analyzing the NMR spectrum is simply great. I feel difficult to solve the NMR spectrum but now I understand the secretes of the NMR spectrum. Thank you friend....
You're very welcome, happy to clear it up for you!
Thanks Leah! Started with NMR this year still getting used to it. This is a great summary!
You're so very welcome!
you are a very talented lecturer Leah Fisch. Thanks for this channel, it will be useful to me in the future.Now i get all of it.
You're very welcome! Thanks for your kind words!
Bump this vid; it's the best applicable explanation for those of us in a typical second semester organic.
thanks!
Thanks Leah! It's helping me prepare for a medical entrance exam
You're so welcome, happy to help!
Amazing, amazing, AMAZING video! You make it so easy to understand! Absolutely the best video on NMR!! Thank you!!!!!
You're very welcome, thanks for your kind words!
God bless you for uploading this series.
You're very welcome!
your way of describing the concepts is very nice. i'd like to watch your other lectures too.
Glad you liked it!
This is GREAT! Good overview without the technical detail! 😊
So glad that it explained things clearly for you!
I didn't realize that n stands for "neighbor"! But knowing this will help me remember what n stands for, because the word "neighbor" starts with an n!
The hat trick was pretty clever too.
So glad this helped you!
Really helped summarize the basics of understanding MMR Spectroscopy. Thanks!
You're so welcome, happy to share!
I'm from Brazil, and you helped me, thanks Leah Fisch ! :)
You're welcome, glad I could help!
i like your set up, very good. the colors made it very easy to understand. great great video.
Glad you liked it!
You are so great in teaching . I really admire the lecture
Happy to help!
You are amazing
You saved 3 houres om me
Thank you
Glad I could help!
Wow. This is the best help I could’ve received
Glad I was able to help!
OH MY GOD THANK YOU LEAH! :') i was depressed cuz of NMR but now i get it
You're very welcome!!!
YOU ARE AMAZING. Thank you so much for making this video!! It helped SO much!
Aww thanks, and you're very welcome!
Hey Leah, :) . Am a student. And i am trying to learn the analytical techniques,a part out of my curiosity, but mostly for my survival in my chem lab. Hey, by the way i appreciate the time you spent for replying. Thanks again :)
You're very welcome!
Thanks you gave me hope for not failing tomorrow's test. :) I am in organic chem 2 at TTU
Happy to help!!
lol, you are really good at making explanations i've spent 2 hours in a lecture and like2 hours trying to figure out and i didnt get it. now i geddit!
Awesome, happy to help!
This helped out so much for NMR analysis. Thank you
Pre med. Orgo is part of core classes
You're very welcome!
Final exam tommorow, HAd organic chem fininshed in 18 days. this video really help meto get an idea. One of the question will be base on this concept
Happy to help!
You're the best! Everything was so clear and precise! Thank you :)
You're very welcome!
I'm a high school student who's mark rides on my ability to analyse this. Thank you so much for explaining it so well. I'm going to go get that A now. XD
you're very welcome!
You're amazing !
and your channel will be useful as a pharmacy student :)
Subscribed !
did u do it?
@@Windows-st3ti I'm now an R&D team leader in pharmaceutical factory :)
@@basharhamoudeh1563 im glad to hear it hopefully i can be like you in 6 years as well
@@Windows-st3ti if I did it you can do it.
You're very welcome, thanks for subscribing!
Good work Leah. This is "more exciting."
Thank you, hope you found the mnemonic helpful
wow your videos really cleared my doubts about HNMR thnk you
I'm glad I could help!
Just found this video and thank you
Life saver!!
Glad it helped!
Thank you, I dont have a chemistry background. But this helped me, I have to study more on it for my research
You're welcome, happy to help!
Thanks Leah!! Ill hopefully get a good grade this sem because of you
You're very welcome, happy to help!
Thats a great explainination for 1h NMR - very exciting 12ppm 😀
I'm glad you think so! Thanks for watching.
My lecturer couldn't make me understand this in past two weeks in total of 6 hour classes, you explained it in two videos lol
Glad I could help!
concise and coherent, extremely helpful!
thank you Madam! :D
Happy to help!
Thank you so much ma'am. Your videos really helps a lot.. Please keep sharing your knowledge with us
You're very welcome
Congratration for a very good presentation, I wish you all the best
Thank you very much!
U helped me a lot.....thanx btw!!!
Happy to help!
You rock my world Leah.
Glad I can help!
Thank you! You helped me understand what 2 semesters of analytics could NOT do. You are a saver!
Oh wow, you're very welcome
These videos are clear and cool
Glad you enjoy them!
Brilliant explanation! Thanks so much! You really helped me for my exams!
You're very welcome!
Wow this is just a banger of a video !
Glad you like it!
Subcribed! Hey thank you so much, you are brilliantly clear and thorough, thumbs up!
You're very welcome and thanks for subscribing!
I have learnt more about NMR in 11minutes than I have in an entire semester of lectures... Your explanations are excellent and clear, my lecturer doubts i will pass my exam since shes better at picking on my mistakes than actually helping, however this has given me determination and more confidence to prove her wrong. Thank you :)
Did u pass we must know
Happy to help clear things up for you!
Funny how the way you speak was a big reason why I kept on watching! It's just a matter of taste! Thanks for the video!
You're very welcome!
I would give two thumbs up, if I could! Thank you a lot!
You're so welcome!
Really thankful for yr video,it makes me understand more
Happy to help!
I heart you
:)
9:44 did you mean to say deshield the hydrogens causing them to shift left?
Yes, thank you for pointing that out. Electronegative groups pull electron density towards themselves and deshield the surrounding protons.
good to start from here!
happy to help!
You just made everything make sense!!! Thank you!
Yay! you're so welcome
You really are my hero! I'm desperately cramming for my Ochem II final 😬...
When is your final? You can find all of my resources here: leah4sci.com.syllabus
this is really helpful, thanks!
You're very welcome!
I am wondering about the example at 7:37. As if the CH2 is also bonded with other carbon chain (R-CH2CH3 in video), why should it be still triplet but not more when it should be also split by the neighbor H from R?
for the purpose of this example we assume that there is nothing else going on. This allows us to focus on simply understanding how these groups impact each other. the R or 'rest of the molecule' can be anything. This means it can or can't have hydrogen. We'll have to account for the splitting accordingly when presented with R specifics.
Thank you, thank you, thank you, thank you, thank you, thank you!
Ha, no I'm in O chem 1 if you can believe it! In our syllabus, we skip from chapter 5 (radicals , carbanions / cations), to chapter 12 and 13 ( IR, EM, NMR spec).
Sam Houston State University. Huntsville, TX.
I just got through with the quiz over this material, my proff looked over my material and gave me 'the nod'. I give you the credit! Thanks so much!
You are welcome, welcome, welcome, welcome! :)
Very helpful indeed, I'm extremely appreciated.
You're very welcome!
It was an interesting experience for me, 10 years ago when I was pursuing my MSc in Biotechnology. However, I have now shifted my career to education and I am currently doing my PhD in Education. I have moved from the field of Science to Social Science, but it's amazing how quickly time passes by!
at 3:21 the top two yellow protons are not equivalent. there is a chiral carbon at the connection to the methyl. thats why the 2 yellow protons are diastereotype protons. one is above and one below the ring. they are not equivalent. There are six types of different protons in this molecule.
There is not a single chiral carbon on this molecule
@@Leah4sci your right... though i am still quite sure not all yellow protons are eauivalent. 2 face the methyl side of the ring while two are at the H side.
They 2 pairs of diastereotope protons. Substitution will lead to a diastereomer, as then the front c becomes chiral.Dont get me wrong, your video is great, but this first example is definately wrong. You could just get simulated spectrum from Chemdraw to check im right.
Still love your content. Important to get more people to love chemistry. :D
Your work is amazing!!! Thanks a lot!!!
You're so very welcome!
i hope youre my professor.
Thanks, but I'm going to stick to teaching online :)
at 6:55, do you have to be told how many hydrogens are represented by this or is there a way to figure it out?
It depends on the integral of the signal which is usually given or, if you evaluate a measured spectrum yourself (e.g. with the program MestreNova) the integrals of the signals can be ascertained manually.
you are a lifesaver. Thank you!
You are so welcome!
This video useful for me,thank you.
You're very welcome!
YOU ARE BRILLIANT
THANK YOU SO MUCH
You're very welcome!
Leah, at around the five-minute mark when discussing calculating the number of neighbors based on the number of peaks you see, you said at one point that subtracting one from the number of peaks equals the number of types of neighbors to the hydrogen of interest in the molecule. Did you misspeak? I just want to be sure I understood you correctly
peaks = n + 1 so you subtract 1 for the total # of neighbors.
Very well explained.
Glad you liked it!
thank you mam. NMR become easy for me .
I'm glad I was able to help!
I feel more convident with these videos.
Awesome!
Hey you're really good. I would appreciate you to upload more videos.
Can you please upload a video on NQR spectroscopy?
Thanks for the recommendation. I post free videos as I have time and am always looking for suggestions. For more help with this topic in the meantime, contact me through my website: leah4sci.com/contact
@@Leah4sci sure will do
Girl, you are cool! Spot on information!
yay, glad you like it!
Your videos are amazing :O Thank you so much for your help.
orgo 1 :) I've been using your videos to prepare for interviews
You're very welcome, so happy to help!
You're a life saver!
Thank you
You are adorable. Its been a long time since any chemistry video which is zero boring but exciting with cool HAT tricks. Gonna check your other videos too. Anyway thanks Leah :)
Happy to share!!!
Thank you very much that's more than exellant represintation
You're so welcome!
Thank you soooo much! You explain it clearly in the simple way, it's easy to understand :)
You're so welcome, happy to help!
Thank you
U r amazing
U make it like a piece of cake
Thanx alot
You're very welcome!
@@Leah4sci wow! it took u 9 years to reply 😂🤍
grt work..... gr8 help...ty vry much. .like ur videos..vry much...fantastic
Glad you're finding these helpful
Thank you so much!! :) It was very well explained!
You're very welcome!
You are a really awesome teacher! Thank you so much for your videos.
Thanks for your kind words! You are very welcome
Super helpful. However, my instructor would fail you if she heard you call it a machine instead of an instrument 😂😂
ooof! I'm glad I don't have your insructor!
Wow great.... Need your help bfr my exam......
Happy to help!
Very Good
Thank you