thank you so much. i have an exam in 5 days and have no time to read all the books etc. you really helped me! thank you and happy new year from Bulgaria! ^^
Taking OCHEM 2 right now. Btw, your videos on NMR saved me on my OCHEM I final exam. There was an IR/ H-NMR + rxn reagents problem worth 20 pts. and the prof told me that I was the only student to get it 100% correct! Thanks a million+!
Organic chemistry II. It's been a couple years since I took O chem I, plus my last professor didn't emphasize spectroscopy. This was the perfect refresher.
the whole chemistry teacher of my city who say we are organic specialist were not able to explain the spliting of peaks i love you for making it possible
Hats off, I had a different background and now working on synthesis of natural products on a PhD project. I cant explain how I was surviving for analyzing NMR spectrum. It is a great effort done by Leah Fisch.
Leah I am grateful. You have the right ability to teach and convey your understandings in a simple way. Believe me this is not easy to convey your knowledge. Thanks once again. Two thumbs up !
Thank you so much! Your first video made it so easy that I knew the structure within first 15 seconds after knowing the formula you gave. Didn't even need to watch the rest of the video!
In my experience, NMR and other spectroscopy methods are the most difficult to learn from an organic chemistry textbook. Thank you for teaching NMR & its examples in a straightforward/simple fashion.
wow! that was so helpful, currently I am studying NMR in physical chemistry course. I felt that this lesson was hard and un-understandable. But, when I watched your videos I found it to be so simple and I have to say: "It is a piece of a cake." Thanks for your comprehensive explanation.
Probably the best NMR tutorial on TH-cam. Thank you very much. Q. There are different numbers of hydrogen neighbours in left compared to right of the molecule and I did not understand why both show triplet. Please help!
+Alireza Kashani They both show a triplet because the triplet represents the 2 hydrogens on the CH2 that is between them, which they are both connected to. Those 2 hydrogens are the neighbours, so 2n+1 = 3 peaks, for both the left and right of the molecule. :)
Thank you! When looking at splitting patterns, you have to evaluate each group and its neighbors on its own. In the case of CH2, you look at the right neighbor, then ignore the right neighbor and look at the left neighbor. This is because once they are separate further out they have no impact on each other. Consider: If I have a neighbor on my right and left, they are each my neighbors and I am their neighbor, but they do not neighbor each other
Thankyou Leah! Tomorrow is my freaking organic chemistry exam. Final year Bsc. I failed in org chem only. So this is reexam. But I think I'll pass after your help :)
i have never wasted my time to leave a comment;but i will so ungrateful not to say thanks.If i find all your videos,i will stop going to class.Thanks so much
It’s not just about even/odd but also about how many there are total. At the undergraduate level (this video) students are taught to look for H peaks in H-NMR
I love how you labeled the graph "boring" and exciting". Very helpful. Thank you!
You're so welcome!
She's the goat fr fr. Helped me so much in my OCHEM class. thank you so much leah!
You're so welcome!! Glad to hear it. :)
I’m really mad at myself for finding this channel a week before finals, but I’m so glad I did. Thank you so much.
Better late than never? How did it turn out?
Its amazing how u made those incredibly hard concepts so much easier in this video. Thank you for sharing the knowledge :)
So happy to help!
Wow, speechless ... i feel like i can actually pass this course now, ty.
right she explained it in easy way more those who have PHD
WOOHOO!!
That's my goal, to make it make sense!
thank you so much. i have an exam in 5 days and have no time to read all the books etc. you really helped me! thank you and happy new year from Bulgaria! ^^
You're very welcome, glad I could help!
Taking OCHEM 2 right now. Btw, your videos on NMR saved me on my OCHEM I final exam. There was an IR/ H-NMR + rxn reagents problem worth 20 pts. and the prof told me that I was the only student to get it 100% correct! Thanks a million+!
***** It started last week. So, just review and intro to mass spec. In lab, we're starting on methyl benzoate by Fischer esterification.
That's awesome!!!
thank you so much; Your videos explained the whole 1H-NMR topic better than 6 hours with my prof and 200 of his pdf slides
You're welcome! Glad it helped!
My teachers slides were awful as well
You are better than any organic chem professor I have ever had!!
Awww thanks!
I have learned more in the past 20 minutes from you than I have learned the entire semester. Thank you!!
You're so very welcome!
This was immensely helpful. This is the first thing I have found that helped me to really understand spectroscopy. Thanks!
Organic chemistry II. It's been a couple years since I took O chem I, plus my last professor didn't emphasize spectroscopy. This was the perfect refresher.
You're welcome, so happy to help!
the whole chemistry teacher of my city who say we are organic specialist were not able to explain the spliting of peaks i love you for making it possible
You're so welcome, happy to clear it up
Hats off, I had a different background and now working on synthesis of natural products on a PhD project. I cant explain how I was surviving for analyzing NMR spectrum. It is a great effort done by Leah Fisch.
You're so very welcome, happy to share and help!
Leah I am grateful. You have the right ability to teach and convey your understandings in a simple way. Believe me this is not easy to convey your knowledge. Thanks once again. Two thumbs up !
You're welcome, so happy to help! And thanks so much for your kind words.
Best NMR video on youtube. Short and concise! Thank you!
***** i am studying for the MCAT right now and this helped a lot!
I may drop by just for some short review. Thank you for offering this!
You're so welcome!
Thank you so much! Your first video made it so easy that I knew the structure within first 15 seconds after knowing the formula you gave. Didn't even need to watch the rest of the video!
Fantastic!
When you have exams in a few hours and need a TL;DR for nmr. Thank you.
how'd you do?
you're welcome!
This is one of the most simplest tutorials I've seen on NMR. Thanks! Really could understand with this!!
Yay, so happy to break it down for you so that it's understandable
I learned everything about NMR in these 2 videos. Thank you so much for keeping it to the point. Great explanation.
You're welcome, so happy to help!
Great explanation! This video helped me to understand the analysis of nmr spectroscopy :)
Happy to help!
In my experience, NMR and other spectroscopy methods are the most difficult to learn from an organic chemistry textbook. Thank you for teaching NMR & its examples in a straightforward/simple fashion.
You're so welcome, I'm happy to help!
Thanks Leah, you are a good person. If only there was more people like u in this world.
Your videos really helped me get through this.
Aww thanks so much!
Simply magical, thank you for this amazing and easy to understand tutorial!
Aww, you're so welcome!
Thank you so much my class is covering this tomorrow so I wanted to get a head start. You really are a saint hopefully class will be a breeze tomorrow
Glad I could help! Keep ahead of the curve with this: leah4sci.com/prestudy
You are an angel for chemistry students...!!!
Awww so happy to help!
YOU ARE A SAINT
Thank you!
Wow! It took you 7 minutes for me to understand what took me 2 hours in lecture! New subscriber for sure!
Glad I could help
I love watching your videos ! They help me understand so much better because my professor does NOT teach anything . Thanks !
You're welcome, so happy to help!
Thank you is not enough to show my gratitude for your video. Greetings from Cali!
You are very welcome!
Saved my life, have to do this for my Organic Chem lab... Thank you!
Glad I could help! You're welcome :)
You posted this long ago so you'll not read this but you're a godsend. You put the textbook authors to shame. I just love your work.
Awwww, thanks so much for your kind words!
wow! that was so helpful, currently I am studying NMR in physical chemistry course. I felt that this lesson was hard and un-understandable. But, when I watched your videos I found it to be so simple and I have to say: "It is a piece of a cake." Thanks for your comprehensive explanation.
Oh wow, that's fantastic! I'm so happy to have helped clear your doubts
You make me cry, I get it now TToTT The "Boring" and "exciting" thing is soo helpful!!
Glad the video helped you understand the topic better! You are very much welcome!
I have a midterm in two hours and this SAVED me! Thank you!
You're welcome, so happy to help!
explanation of that example is very good ...thanx from the bottom of my HEART
You're so very welcome, happy to help!
So You Just Added Electronegativity into NMR Spectroscopy and made it a whole lot more exciting. I Thank You.
You're so welcome!
I've been studying for days, and never understood NMR until now. Thank you!
You're welcome, so happy to help!
Thank you for your o chem videos! I feel so much more confident about the upcoming exam!
Awesome, so happy I could help!
And it was simple after all! I can't thank you enough, Leah!!!
I'm glad I could help!
You are literally saving me today!! Regards from Brazil!
You're very much welcome! :)
You made this topic so easy to understand! Thanks so much!
You're very welcome!
A grate explanation , I will never forget as concept is clear , don't have to memorise. I wish you could be my lecturer.
Thanks heaps for you help.
You're so very welcome!
Now i can proceed with my NMR test . Thank you Leah
You are so welcome!
Probably the best NMR tutorial on TH-cam. Thank you very much.
Q. There are different numbers of hydrogen neighbours in left compared to right of the molecule and I did not understand why both show triplet. Please help!
+Alireza Kashani They both show a triplet because the triplet represents the 2 hydrogens on the CH2 that is between them, which they are both connected to. Those 2 hydrogens are the neighbours, so 2n+1 = 3 peaks, for both the left and right of the molecule. :)
Alireza Kashani
Only adjacent carbon is taken
Thank you! When looking at splitting patterns, you have to evaluate each group and its neighbors on its own. In the case of CH2, you look at the right neighbor, then ignore the right neighbor and look at the left neighbor. This is because once they are separate further out they have no impact on each other.
Consider: If I have a neighbor on my right and left, they are each my neighbors and I am their neighbor, but they do not neighbor each other
Very useful video! Boring/exciting region is funny enough to help me remembering the concept.
Awesome, happy to help it click!
You explained this much better than the book! Thanks for helping.
You're welcome, so happy to help!
Thank you so much for this video! I'm in Organic Chemistry II currently and the prof is not so helpful. This video made everything so clear!
you're welcome, so happy I could help!
I've been at this for hours GOD BLESS YOU
Glad I could help!
Thanks so much! Living in Germany and having an exam on Friday!
You're welcome! Hope the exam went well!
THANK YOU, got chem today. I feel better abt it now.
You're very much welcome! :)
Thank you for making this! You made this so easy to understand! I was iffy in lecture, but this made more sense thank you!
Yay, happy to help clear it up for you!
God this video is from 11 years old still helping people like me thank you you are the best .
The science hasn't changed, glad you found it helpful
Finally, I understand NMR spec. Thank you so much!
You're welcome, so happy to help you understand!
this video saved HOURS of my life!
Awesome!
I have to say thank you. This is amazingly explained. This helps me a lot!!:)
You're welcome! Glad to help :)
Thanx a lot!!!! Got a clear conception now!!! Love from Bangladesh...
Happy to help clear things up for you!
Great job, Leah! Thank you for making these videos!
You are so welcome!
Thankyou Leah! Tomorrow is my freaking organic chemistry exam. Final year Bsc. I failed in org chem only. So this is reexam. But I think I'll pass after your help :)
I got B grade. straight from F
I got B grade. straight from F
I got B grade. Straight from F to B. Thank you 😘
I got B grade. Straight from F to B. Thank you
That's awesome!!!!
You are AMAZING! Your videos are so helpful. Seriously, thank you so much.
Aww, you're so welcome!
OMG YOU ARE LEGIT MY SAVIOR!!! :) KEEP MAKING MORE ORGO VIDEOS!
Awww thanks! And don't worry, I'll keep adding to the channel!
this is wonderful, thank you for taking the time to make this!
You're welcome, so happy to share!
This was quick and simple, thank you!
You're welcome!
Thanks, i actually get this now, omfg.
Awesome!
thank you for your explicit explanation. Really appreciate it! :)
You're welcome, so happy to share!
Thanks a lot.... It was so helpful for me...Expecting more wonderful classes from you....
You're welcome, so happy to help!
You're such a baddie Leah. Tysm this helped a lot.
Wow, you're so welcome!
I was so lost until I found this video! Thanks
You're welcome!
Thanks a lot :) You saved my report.
You're very welcome, happy to help!
i thought studying nmr spectra is complex thing...but your videos made it so easy for me...
yay, so glad to hear that!
At least I understood it better now. Thank youuuuuuu. 😍😍😍😍😍
Happy to help!
Short, sweet, and very informative! A++
thanks!
Very very well done. Just what I needed, thanks!
You're welcome, so happy to help!
more than i learned all semester!
Woohoo!!
it is very useful to under stand NMR
Good luck
ASEEL
Happy to help!
this is the best video ever wish I would have watched earlier
Better late than never?
THANK YOU SO MUCH!!!
You're very much welcome. :)
wayyy better than the tutorials in my university!
Glad you liked it!
Very helpful! You saved my evening! Thank you
You're welcome, so happy to help!
Better than my 70 year old grandma professor!!! THANK YOU!
But your explanation is pretty clear and straightforward, are you a professor?
You're welcome, so happy to help!
THANK-YOU!! You turned my tears into ticks!!!
Yay for no more tears!
Thank you so much!! You made it to so simple and fun
Yay, so glad to make it fun!
forgot i had O chem lab in 2 hours.. watching all your vids and seems to be helping ahha
lol, happy to help!
Very well done. Thank you for this explanation!
You're very welcome!
Thank you so much ...i thought this section was gona be difficult but u made it so easy :)
You're welcome, so happy to make it easy for you!
Yay thanks ! May Leah's power be with me in the exam ! O:)
You're welcome, so happy to help!
HANDSDOWN UR THE BEST!!!
Aww thanks!
Thank you so much Leah, you are the best
You're welcome! Glad to help! :)
thanks. helped a lot for my final exams
You're welcome, so happy to help!
Thanks so much. You've made my life easier :P Brilliant work.
you're welcome!
great thanks to you im just figure out one of my probs to analyzing nmr peaks
You're welcome, so happy to help!
thank you so much! your explanation is really clear!
You're very welcome, happy to clear things up for you!
your videos are amazing ! god bless you
I'm glad you like them!
You're amazing! Thank you soo much.
Thanks for your kind words!
i have never wasted my time to leave a comment;but i will so ungrateful not to say thanks.If i find all your videos,i will stop going to class.Thanks so much
Wow, thanks so much for your comment, I appreciate it!
great video, just a quick question: wouldnt the chlorune also show up as a peak as it almost definetly also has an odd number of nuclei?
It’s not just about even/odd but also about how many there are total. At the undergraduate level (this video) students are taught to look for H peaks in H-NMR
I really like your explanation
Glad you liked it!
U saved my 1st smester 😍
oh wow! Glad to have helped! :)
fantastic explanation. thank you!
you're very welcome!
Thank you! You made it so clear!
You're welcome!
thank you, you are amazing :)
Lets hope with your explanation and help i can ace my A levels, get a good degree and finally.... MARRY you
2 out of three ain't bad lol- already happily married :)