No video
NMR Made Easy! Part 5 - Finding Complex Splitting - Organic Chemistry
Рет қаралды 149,908
Күн бұрын5th Video in my NMR Series. I go over how you can identify or find that annoying thing we all have to learn, called Complex Splitting.
●Become a Patron + Free Tutoring Lottery! / orgomadeeasy
●Private Tutoring Information:
I offer in-person private tutoring in Boston and NYC, and if you live elsewhere on this awesome planet I offer online Skype tutoring that is accompanied with a whiteboard program. For more info check here: orgomadeeasy.or... and contact me via my "Orgo Made Easy" Facebook page or email: OrgoMadeEasy@Gmail.com
●NMR 1/6 Electronegativity and Shielding(NMRs) • NMR Made Easy! Part 1 ...
●NMR 2/6 Equivalent Hydrogens- • NMR Made Easy! Part 2A...
●NMR 2.5/6 Equivalent Hs Part II • NMR Made Easy! Part 2B...
●NMR 3/6 What NMRs Tell Us- • NMR Made Easy! Part 3 ...
●NMR 4/6 Molecules to NMR- • NMR Made Easy! Part 4 ...
●NMR 5/6 Complex Splitting- • NMR Made Easy! Part 5 ...
●NMR 6A/6 NMR to Molecules- • NMR Made Easy! Part 6A...
●NMR 6B/6 NMR to Molecules- • NMR Made Easy! Part 6B...
Make sure you share this with your friends if you found it helpful, and I would love it if you leave some comments to let me know if I'm on the right track ;).
Subscribe to get updated when I make new videos!
/ orgomadeeasy
Connect with me on Facebook/Instagram/Twitter!
Official Website-----------------------OrgoMadeEasy.org/
Facebook------------------------------- / orgomadeeasy
Instagram------------------------------- / frankmwong
Tweet Tweet--------------------------- / orgomadeeasy
Help Support Me Here-------------- / orgomadeeasy
@noahjordan5106 2 жыл бұрын
Just watched this 10 years later and he explained something I haven't been able to grasp in a week in 5 minutes.
@OrgoMadeEasy 2 жыл бұрын
🧩!
@NightGodess80 9 жыл бұрын
I asked my Prof how to do this/explain the complex splitting of H's five times and each time he made me more and more confused. This video explained it thoroughly and simply. Thank you!
@fatimat18 10 жыл бұрын
currently taking organic chem 2, i cant find your previous videos, this one made alot more sense than in class
@kimj633 6 жыл бұрын
thank you, this helped quite a bit. I was so lost on complex splitting before this video
@user-zw1tq8lq1l 9 ай бұрын
I have taken my lower division O chem and now im taking upper div Ochem and you just explained complex splitting way better then either of my professors or TA's ever could!
@OrgoMadeEasy 9 ай бұрын
💪🏼 2012 Frank would be so proud to know this 😊. Here’s a more updated practice problem if you wanna test yourself! 😉 kzfaq.info/get/bejne/lZ1liqudqdzGiIE.html Where are you taking OChem at?
@OrgoMadeEasy 11 жыл бұрын
Thanks for the feedback, I really appreciate it! Thanks for pointing the complex splitting with pi bonds, I completely forgot about it .. woops =X. Maybe I'll make another video to cover that. This video series might end up being 7 Videos actually haha. If you are still having trouble going from a NMR graph to a molecule(the part 6/6/ that I haven't made it) just give me a heads up and I'll try to do one soon. I'd really appreciate it if you could share my channel with your friends thanks! =]
@sam71623 10 жыл бұрын
Thanks for this. NMR is tedious and long winded but I think I finally understand complex splitting.
@RdioactiveTurnip 5 жыл бұрын
absolutely stellar video sir
@sarveshbawane4481 6 жыл бұрын
god bless you ,.... you saved my test dude that was short and easy to grasp , helped alot......lifesaver need of the hour
@stuckdale 11 жыл бұрын
I just watched all the videos and I want to thank you for making them. This last video was especially helpful because I was having trouble with complex splitting but this made it very clear. Cheers!
@ipod366 8 жыл бұрын
I have to subscribe now. You helped me so much for my Orgo 1 final and now Orgo seems so much simpler. My textbook over complicates this whole spectroscopy chapter. Thanks so much! :)
@OrgoMadeEasy 8 жыл бұрын
+Kyle Smith No prob Kyle!! Thanks for subscribing! :D You should def. check out this vid. and find out about some other awesome resources for Orgo and learn the perks for being a subscriber of my channel! :] kzfaq.info/get/bejne/Z7ebetuCqK-Vlac.html
@boihboih217 9 жыл бұрын
You should become an orgo professor :D Thank you verrryyyyyy much! SUBSCRIBED
@dayahsamad 8 жыл бұрын
i slept during the whole lecture in my class. glad that i found your videos. you clearly explain everything! thank you (btw i'm sitting for my final exam tomorrow for organic chem)
@andreameigs1261 8 ай бұрын
2:11 I never understood that until I built a model and looked at it from the top and saw how the molecule was symmetrical. If anyone is still having issues understanding these environments, please build a model just as you see it drawn and stand it up on a table. Place the model so that one end is toward you and the other end is away from you, look down at it, and you'll see the symmetry.
@pennysmith9791 10 жыл бұрын
Thank you so much. I am teaching myself this and without your help it made absolutely no sense. I finally am less scared of these questions.
@OrgoMadeEasy 10 жыл бұрын
Hooray for less fear! :] No problemo, keep up the hard work and I'm sure it'll pay off Penny!
@OrgoMadeEasy 11 жыл бұрын
Thanks for watching/feedback!! (Big Shout Back from NYC/Boston) haha. Now if only my cooking skills were outstanding too.
@littlewildfox123 5 жыл бұрын
Yo, my mind has been blown. Watched Khan Academy and didn't get it, came here and I'm like I GET IT NOW. You the man
@OrgoMadeEasy 2 жыл бұрын
Looking for an extra practice problem that’s even harder? 😊 Here’s what 2019 Frank made for y’all : kzfaq.info/get/bejne/lZ1liqudqdzGiIE.html
@OrgoMadeEasy 11 жыл бұрын
Jessica! Hi haha. Your welcome :]. Thank you for letting me know that their useful actually, it's always more encouraging when I hear back from people like you, so once again thanks ;). haha unfortunately I'm sure your lecturers would destroy me in a knowledge contest though :X. And of course you can ask me questions! Just post them on my Facebook page so this way if anyone else has similar questions they can benefit as well. Thanks for the support!!
@Ishraqwantstochill 8 жыл бұрын
Thank you for uploading these videos! Great way to review for sure
@OrgoMadeEasy 11 жыл бұрын
No problem! =] I remember when I first learned NMRs and how confusing they were so I just wanted to give you guys a lil help to speed the learning process lol
@gakfas 11 жыл бұрын
Thank you Frank Wong! You've brought your ancestors great honor!
@ThePrarthuShank 10 жыл бұрын
Saying "1 bond 2 bonds 3 bonds" over and over again must make your mouth hurt!! But great job on these videos, NMR finally makes sense to me. thanks, and keep being awesome!
@MusakFerrous 7 ай бұрын
Bruh thank you so much I was so fuckn lost in the sauce with the nomenclature of this. Why not just say C split by a doublet and triplet. I get it it's long but man my professor did a horrid job explaining this. What a goat.
@OrgoMadeEasy 7 ай бұрын
Haha you’re welcome! I would recommend this other vid I made with my buddy - Dr Jason Dinsmore / TheOchemWhisperer! kzfaq.info/get/bejne/lZ1liqudqdzGiIE.htmlsi=78GDdLFcAGStVQuF
@SeaneeDeee 10 жыл бұрын
This really helped me with my coursework on organometallic complexes. Thank you very much!
@sukiquartz8483 6 жыл бұрын
Thank you soo much Frank, I think I finally understand NMR now!! :DD I'm binge watching all your videos XDD THEY ARE THE DEFINITION OF AMAZING! :D You Sir are Great! :DD
@jesssummersxoxo 11 жыл бұрын
Haha knowledge doesn't mean anything if it's not being shared out and passed on to people AND you did that incredibly well!!! ^______^ (cause I seriously learned almost zero from my lecturers hahaha) Thanks for replying the comment! It really made my day and I just liked your page! I'll be sure to seek for your help should I have any doubts on orgo! Have a great day, Frank! :)
@jasonh2150 3 жыл бұрын
great video, very helpful
@OrgoMadeEasy 11 жыл бұрын
Wow you sure know how to inspire me haha, thank you very much for the feedback. I'm glad I could help make Orgo a little more enjoyable ;)
@OrgoMadeEasy 11 жыл бұрын
Hey! I'm sorry for not responding sooner, I didn't get any email notifications about your comment like I usually do. (Grrrr *Shakes fist* KZfaq!!) But anyway when I said lower I mean't the splitting pattern was lower since it's a doublet rather than a triplet. So we get a doublet of triplets rather than triplet of doublets. Although you might want to check with you Prof. which order you guys should have it. If he answers, can you tell me what he says as well?
@cocacoladogwalk 9 жыл бұрын
A little confused. You mentioned that for Hb the molecule is somewhat symmetrical so we only look at one Ha group, so doublet of quartets (doublet from Hc), but then why was the case for Hc treated as a triplet of quintets and not a triplet of triplets?
@jimmy570 11 жыл бұрын
Your explanations are outstanding! Big shout out from SLU
@taoranli8476 2 жыл бұрын
thank you so much for the video! this video is really helpful!
@jesssummersxoxo 11 жыл бұрын
Hi Frank! I was revising for NMR and stumble upon your videos and before I knew it I watched all 6 parts! ^___^ I'm so looking forward to watch your other videos as I am actually studying the same thing (mechanisms and all @.@) and my notes put me to sleep. SO THANK YOU FOR MAKING THESE VIDEOS! For one thing they keep me awake and at the same time, I learned a lot! You teach way better than my lecturers. Haha. Can I ask you if I have any questions about topics though? :) Anyways keep it up!!
@BenBI0 8 жыл бұрын
Thanks for the help; this really pieced together my spectroscopy lectures!
@courtneyp2657 9 жыл бұрын
I'm a bit confused on how you knew which hydrogen to do first (knowing its doublet of a triplet instead of triplet of a doublet)
@dayahsamad 8 жыл бұрын
he said to do the lower/smaller first. duplet is smaller than triplet.
@youtubechannel5429 5 жыл бұрын
It depends on the coupling constant, J. You start with the greater J. Standard values of J are out there
@OrgoMadeEasy 11 жыл бұрын
Awesome! I'm glad I could help haha. Thanks for the feedback! I actually went through Orgo I and II without ever learning Complex Splitting so I wanted to help everyone else so they wouldn't have to go through what I did haha. Please help me spread the word of my channel to other Orgo students if you can! Thanks! =]
@jodi-anna.richards914 8 жыл бұрын
Hi Frank, I love your videos. Keep up the good work.
@OrgoMadeEasy 8 жыл бұрын
+Jodi-Ann Richards Yes sir!! Btw since you're taking Orgo make sure you know about these other solid resources for Orgo/the perks for being a subscriber to my channel! kzfaq.info/get/bejne/Z7ebetuCqK-Vlac.html
@cognitivedissonance7422 7 жыл бұрын
Finally, a coherent explanation! Would it be incorrect to say the number of peaks of any hydrogen B in complex splitting is simply (n+1) of group A times (n+1) of group C? I do understand the need to further describe the peak shape, but just as a rough check?
@OrgoMadeEasy 11 жыл бұрын
Ah darn haha, you caught me :X. Good thing the 4+month ago version of me corrected myself phew :D
@soukainaibourk3298 8 жыл бұрын
thank you so much for this video :) i'm just confused on peaks of Hb ! as you said we will have two dq for each two Hb :/ should not be just have one (dq) for all Hb ? ? they are not equivalent ?
@21leehe 10 жыл бұрын
Frank, thank you so much! you make it so simple... :)
@OrgoMadeEasy 10 жыл бұрын
Your welcome! That's how things should be, nice and simple haha :]
@rbrahmbhatt1001 8 жыл бұрын
Hi I just wanted to verify we only get ONE SIGNAL per Chemical environment right? So for example there are 4 Hb's and 6 Ha's in the video right? So just considering only those two I would see just ONE Doublet of Quartet signal and just ONE triplet correct?
@earthbyocean 10 жыл бұрын
Great video, thanks! Would be helpful to see the peaks on a spectrum, considering the effects on chemical shifts due to the oxygens.
@youtubechannel5429 5 жыл бұрын
Great video! Although it’s not clear why Hydrogens D are necessarily dt and not td. I take it that the J constant for H’c is greater which is why it comes first making it a doublet of triplets..
@directionerhere932 Жыл бұрын
okay can any one explain for 4:53, why cant we call it triplet of doublet? BTW your videos are literal life saver!!!
@OrgoMadeEasy Жыл бұрын
So you absolutely can call it a Triplet of Doublets as well. I would check with your Prof for the answer to that Q 😆. Glad the videos are still helpful haha I’m always wondering if they’re holding up after all these years lol. Speaking of which I made a super fun one with Supportive Soccer ⚽️ Dad for complex splitting if you want my more updated take on the topic: NMR H Signals!? Complex Splitting Made Easy! (Pt 1) - Orgo Made Easy - Organic Chemistry kzfaq.info/get/bejne/lZ1liqudqdzGiIE.html
@directionerhere932 Жыл бұрын
@@OrgoMadeEasy thank you so much for replying and I will definitely check out the video!! And once again your videos are very helpful!! :)
@earthbyocean 10 жыл бұрын
Quick question: I'm confused as to the effect of the axis of symmetry. Why do the 6 Ha's produce one triplet, not two? Likewise, do the doublet of quartets produce one or two sets of dq peaks? Does the symmetry mean that the equivalent types of Hs, even though they are separated by, say, 6 bonds (for Ha) are combined into one peak? Cheers! Again, great video.
@OrgoMadeEasy 10 жыл бұрын
The 6 Ha's produce one triplet because they are all in the same enviornment technically and are just hydrogens that are being split by two other hydrogens (Hb). Giving you your triplet. The same applies to the doublet of quartet peak, it is simply 4 hydrogens in identical environments that are being split by two unequivalent groups of hydrogens within 3 bonds distance (1 group having 1 hydrogen, and the other group having 3 hydrgoens). And the answer to your last question is yes. The symmetry just helps us see that technically all the Ha hydrogens are equivalent and in the same environment. :]
@ShawnPumar 7 жыл бұрын
bro i got a midterm tmrw you saved my life
@Swirly1997 7 жыл бұрын
Well that clarifies a whole lot more!!!! Thank you!
@H4rry14 7 жыл бұрын
SO to check, you split by each H environment next to the selected one?
@scooby2031 2 жыл бұрын
Thanks for the help.
@mugiltharshnigobu3451 3 жыл бұрын
is there any ways to predict the structure of the compound based on the peaks which are complex multiplets in hnmr spectrum?
@evagonzalez3206 5 жыл бұрын
Yooo you really helped simplify this thanks!
@OrgoMadeEasy 11 жыл бұрын
Oh and if you have friends/classmates who just aren't getting NMRs make sure you tell them about my Channel as well :].
@shayguthrie7098 8 жыл бұрын
Hey, how would you put a doublet of doublets into your AWESOME TABLE? Would it be just the shift and then however many hydrogens and then 2 neighbors or do you do it a special way?
@0bs0Le3t 10 жыл бұрын
Great explanation... how do cis/trans affect splitting (if at all)?
@OrgoMadeEasy 10 жыл бұрын
Thanks! Alkenes themselves very often will cause complex splitting but it depends on each situation. If you get stuck just try to think of each hydrogens environment and if they are being split by 1 group of equivalent hydrogens (simple splitting) or multiple groups of equivalent hydrogens (complex splitting)
@vvvvv800 6 жыл бұрын
About the complex splitting .. we just do n +1 rule for each side H and thats it? No multiplying? Like u did in the video ..it was doublet for the left H and triplet for the other H so the end result is 5 peaks right? So i do that for all compex splitting right? And thank you so much .
@cminhterry8263 8 жыл бұрын
Frank, thank you so much for such a detailed explanation, yet I wanna ask why in some cases septet of doublets are present instead of doublet of septets if we always start with lower number of hydrogen first? Like the one CH(CH3)2OH and triplet of doublets are different from doublet of triplets arent they? How can I classify two in a molecule?
@OrgoMadeEasy 11 жыл бұрын
Lol I did? Where? Thanks for the kind works =] I'm glad these videos helped! NMRs were my worst fear when I took Orgo I =X.
@Rosaleye 9 жыл бұрын
Thank You. The video was very helpful!
@DeepakSharma-iv6xm 8 жыл бұрын
HII . i have a question>> if in this structure we omitte the oxygen next to carbonyl then what will be the splitting pattern for those nine hydrogen
@johnyuxuanha 2 жыл бұрын
this was really helpful
@OrgoMadeEasy 2 жыл бұрын
Be sure to check out this video as well for extra practice! It’s a harder example with complex splitting 😀 kzfaq.info/get/bejne/lZ1liqudqdzGiIE.html
@aseman8167 Ай бұрын
Thanks, but you don't have j constant. how do you distinguish between dt or td ?
@OrgoMadeEasy Ай бұрын
@@aseman8167 that’s a good Q! At BU we never went into depth so we were just told it could be either 😂 🤷🏻♂️
@shemwoo8513 6 жыл бұрын
@4:33 can you elaborate more on why Hc is the "lower" one? Thank you.
@kekash7927 6 ай бұрын
why would Hc show triplets quintet? since the 4 Hb's are equivalent, wouldn't it just be triplets-triplets? So like 6 peaks in total?
@OrgoMadeEasy 6 ай бұрын
Yup so if you were Hc you would be neighbors with a family of 2 on one side and a family of 4 on the other side. Hence [2+1=3 (triplet)] of [4+1=5 (quintet)].
@OrgoMadeEasy 6 ай бұрын
You can check out this video for a similar practice problem: kzfaq.info/get/bejne/lZ1liqudqdzGiIE.html
@Coateh3 11 жыл бұрын
Very well done, helped out a lot studying! However, I noticed you don't mention long range coupling through pi bonds which would have been an added help especially in some harder examples. But again, thanks for the help! :)
@nirashrov1071 8 жыл бұрын
Thanks ! found your stuff truly helpful!!
@jinds2242 4 жыл бұрын
Amazing video, thanks so much!
@theworst3028 Жыл бұрын
Not sure if youll see this but how come when looking at Hc, you got TQ. I thought if you were looking at equal points like Hb is you would just consider one and then Hc would be TT. Great video otherwise
@OrgoMadeEasy Жыл бұрын
Good Q! So it’s because there are 4 Hbs all within 3 bonds distance to Hc. So you’d still do 4+1 and get quintet. And 2 Hds so 2+1 = t. And thus TQ or QT 🙂
@ccrackmyribs 9 жыл бұрын
YASSS THIS HELPED SO MUCH THANX YOU ROCK
@amityboy14mo Жыл бұрын
AMAZING!
@OrgoMadeEasy Жыл бұрын
Thank you! I’d definitely recommend checking out this sequel to this video (for an even trickier example!) kzfaq.info/get/bejne/lZ1liqudqdzGiIE.html
@amityboy14mo Жыл бұрын
@@OrgoMadeEasy Will definitely check it out. I'm doing 4th year chemistry and still struggle with NMR sometimes XD
@OrgoMadeEasy 11 жыл бұрын
*Whew* glad I am still able to do that even though I'm not a Pre-med anymore ;) haha. Thanks for the motivating comment!
@mohammedhawwal3687 7 жыл бұрын
Maybe we should think about diasteriotopic proton. Not all geminal protons are splitting the same, HDs will show different singles
@norac573 9 жыл бұрын
THANK YOU FRANK
@SulemanKhan1 9 жыл бұрын
Thank you! Your videos are legit :)
@zarzu4 6 жыл бұрын
this helped a lot, thanks
@thirsty1629 2 жыл бұрын
Does your back hurt from carrying my whole chemistry for biologists module?
@OrgoMadeEasy 2 жыл бұрын
I WAS WONDERING how I got a herniated disc!! 🤔
@austinjjla 10 жыл бұрын
Thanksssssssssssssssssssssssssssss you saved me from this proton nmr
@yedluriprasanna517 8 жыл бұрын
thank you so much ,nice explanation, but sound is not good in some videos.
@OrgoMadeEasy 11 жыл бұрын
thanks! Comment's like yours inspire me to continue making them haha
@goswp002 10 жыл бұрын
Hi should Hb not be doublet of septet as Ha is one environment if not why?
@OrgoMadeEasy 10 жыл бұрын
Hi Partha, okay so it would be quartets because EACH Hb group of hydrogens only have the 3 hydrogen A neighbors to the left and 1 hydrogen C. So (1+1 = doublet, 3+1 quartet) doublet of quartets or quartet of doublets. Because the molecule is somewhat symmetrical we are grouping the 6 Hydrogens as Hb. If there were 6 hydrogen As on the top and on the bottom then it would be a doublet of septets. :] Hope that helps a little.
@hailp9058 4 жыл бұрын
You should put your social media links in your bio!
@arlsffa 9 жыл бұрын
Finally I got it :D Thank u !
@yoliecius5605 7 жыл бұрын
Amazing!
@ciangorman4245 8 жыл бұрын
I think you're confusing Hb and Hc. If you're saying that the Hbs are equivalent and then only taking one of the Ha I.e 3+1 =4 quartet, then surely the Hc should only be split by one Hb ie 2+1 = 3 triplet not 4+1=5 quintet. Otherwise nice video.
@OrgoMadeEasy 11 жыл бұрын
Haha such wise words! Thank you and hope you have a great one too! :]
@Linda-ds5wm 8 жыл бұрын
thank you!!!
@seminolman15 11 жыл бұрын
You can contend with the great Salman Khan himself. Thank you for this Frank
@intotheether3803 10 жыл бұрын
Wow. You. Are. Simply. Amazing. Frank!!!! :)
@OrgoMadeEasy 10 жыл бұрын
Thanks Susanna haha, your too kind ;). I really do appreciate the comment, it's very motivating. Wish you the best with your studies!
@israachemistry 7 жыл бұрын
nice explain :)
@carolenasr3235 Жыл бұрын
I literally still dont understand how to find the splitting of the protons.
@OrgoMadeEasy Жыл бұрын
I made a follow up video with an Orgo tutor friend - give this a try 😊 kzfaq.info/get/bejne/lZ1liqudqdzGiIE.html
@mirandax0417 10 жыл бұрын
For a minute I read " I now take penises" instead of pennies ... LOL I have been watching your videos for too long... Thanks so much you are amazing . Te Amo :)
@OrgoMadeEasy 10 жыл бұрын
Haha Miranda, I think you need to get some sleep. Jkjk, thanks for watching! :]
@OmarAhmed2016 11 жыл бұрын
You're a Beast!
@eseasoro7251 2 жыл бұрын
jeez this is complicated a little for me , hopefully over time i grasp
@xod4702 3 жыл бұрын
ugh what a K I N G 😍
@johngrey1074 6 жыл бұрын
Why did the pretty girl stop appearing in the video series?!
@miriamrodriguez3415 8 жыл бұрын
you had me until this video...It started to get really wordy and/or complicated around Hd and He...I don't know why I just could not get through this video and understand it. The first 5 videos were pretty awesome though
@debbiehariette6335 3 жыл бұрын
@19LiSSa95 11 жыл бұрын
Thanks for all these videos! Really helpful!!
Frank Wong
Рет қаралды 279 М.
The Organic Chemistry Tutor
Рет қаралды 686 М.