Get exam-ready with my 12 OChem practice exams available only on Chemmunity: chemmunity.info/dave Join Chemmunity today to get access to 200+ instructional videos, practice problems, and more exams!
@@18-danijohnfinny64 Yes, an electron-donating group (EDG) can indeed have an inverse effect on a proton's chemical shift in nuclear magnetic resonance (NMR) spectroscopy, compared to an electron-withdrawing group (EWG).
I'm sitting at the University of Washington library and am watching Prof Dave. I look around and see three more computers doing the same. Thank you for saving our lives.
The cycle continues. I also am sat at UW watching Prof Dave. For real, thank you so much. Maybe someday our Ochem professors will learn to teach Ochem.
Swear to god I've had 5 lectures of this and i think this is the most complicated shit. Watch your video and I'm not confused at all. Super easy. Heaven sent.
My professor uploaded 120 minutes of lectures about NMR, yet you managed to explain it much better and in a more clear way in just 14 minutes. Thank you Professor Dave 🥺
That's because these folks are always like "Now, lets explain this with quantum mechaincs" and start shooting some formulas and differentials around the subject and you're losing half of the point because you don't remember them xD It's like they're guiding you through some forrest, talking about the great view and flowers and trees around, meanwhile you're standing there, watching all this stuff and wondering, if you're standing on a path
I was losing train of thought on this, but all of a sudden this clicked in my head, like a virtual lightbulb going off in my head. After years of being lost in confusion by teachers over complicating this; your simple but EFFECTIVE method made me finally get my head around NMR. Thank you!!
I love how I can put off studying for an exam all the way until the weekend before the test date then just watch some Prof. Dave and get over 90% on the exam. Thanks Prof. Dave :)
Finally I understand the chemical shift and I'm from Germany, so the fact that I understand your English explanation better than my German professor speaks for itself haha
omgggg I'm gonna cry. I was literally struggling with this and you just saved me with your crystal clear explanations that my lecturer wasn't able to provide. Thank you so much and I hope you can continue making these kinds of awesome videos and keep helping out students.
Dave, you're doing important work! I was going to say you probably don't know how much you've helped undergrads get through their courses, but I reckon you probably do know! You're like my "professor-on-call"! Much appreciation 🙏
I'm a Japanese student learning chemistry in university. This video is very good for not only learning chemistry, but also listening practice of English.
I'm a highschool student from Germany who's currently trying to prepare a presentation on nmr spectroscopy. After desperately not undarsting anything properly and searching for videos in German which aren't an hour long I gave up and searched for English videos. Then I found your video and you just saved my whole presentation! Thank you!!!
In the horse-and-buggy days of NMR, I was the NMR operator/maitainer (because of my electronics training. I had a very poor understanding of biochem). We had a Jeol C-60 unit, a Japanese import having hybrid vacuum-tube and solid-state electronics. It used an electric field magnet with a "superstabilizer" to minimize fluctuations in the field strength. The magnet was cooled with refrigerated deionized QDW. It could perform both frequency and field-sweep spectra. The purpose was to aid our biochem department in analyzing the structure of DNA with an eye toward cancer research. Lyons-Kettering Research Center at the University of Alabama at Birmingham in the late 60's/early 70s. I left because I was a "fish out of water": The only employee there without at least a Master's.
Professor Dave has just explained 50 pages of my textbook of spectroscopy in less than 10 minutes in the most understandable way. Thank you for your teaching. I was completely lost on NMR spectroscopy.
i know you get these comments a lot, but your explanations are extremely clear compared to the lectures i sat through. you always contextualize it in a way i can understand by keeping it simple without removing all the important information. it really helps me get the basic idea of what's going on so i can better understand the nitty-gritty details my professor tries to tell me. you're an amazing teacher, and your impact on chemistry students is astounding
I am Presently watching the video of Prof . From Abubakar Tafawa Balewa University. Nice work sir. I have used this video resource to teach my 200 level students, in Organic Spectroscopy. It's nice and concise Sir .
Other than mixing up the terms downfield and upfield a couple times, this video was very helpful at understanding H NMR and how certain pieces of a molecule will produce certain signals. Good video!
HOLY CRAP!!! Ive been sitting here for HOURS trying to figure out what I was doing wrong, reading and re-reading and you just solved my problem at the 11:19 marker. I had that "lightbulb" moment. This was awesome, thank you!!
Thanks Prof. Dave. Nobody could ever understand this and everyone’s struggling with this subject in my class, the lecturer also refuses to answer questions so thanks a million.
Man you know how to explain things ! My organic chemistry prof was a very bright mind but he couldn’t be bothered really explaining something to us newbies without it flying over our heads.
I have been studying this for about a month and no matter how hard I tried I could not understand NMR but this video helps me understand instantly. Thank you!!!!
seriously this video really helps me to understand the NMR technique in less than an hour. I wish my lecturer explain the concept like this. thanks so much, professor Dave!
I would add to earlier comments that it's also useful to watch videos like these when you already have studied well for exam, to brush up one's knowledge in a more lively way and also to deepen one's earlier knowledge. I learned now first time to understand why different hydrogens in certain functional groups have such peaks they have. God bless you and many thanks.
I am watching your video from the Missouri S&T chemistry dept. Tomorrow is my mid sem exam on analytical chemistry. Your video has boosted my sense on NMR. Thank you Prof.
U r really helping me a lot sir. Seriously why people give those dislikes in ur videos??? Those are so many dislikes in such a good helpful video. Why??? I really don't understand this!!
Actually my prof explained it very well so for me there was no need to come here, but without Professor Dave explaining organic chemistry to me, it wouldn't be the same. So that's why I'm :D
Your videos have helped me in so many ways! I am in the middle of my teaching degree and became lost in Physics class. Your videos have certainly pulled me through and also provided some exceptional tips on how how to teach clearly! Thank you Professor Dave!
This is the one topic I cant get comfortable with in o. chem. As others said, you broke it down very nicely. Great intro before I delve in more. Thank you for this.
Cool thing to note about the splitting is that it follows Pascal’s triangle, so if it is split into 4 the relative heights of the peaks will be 1 3 3 1, split into 5 the heights will be 1 4 6 4 1, etc
spent days trying to teach myself this and this helped me so much. in my class my teacher dosent even give us the spectrum already labeled... we have to label it ourselves and match it up to the specific ppm.. talk about hard
this helped me understand better analyzation via nmr, i recommend also watching the organic chemistry tutor's video on shielding and deshielding if this video is still hard to understand.
Now only I understood the lesson. Thank you so much professor!!! YOU ARE A LIFE SAVER! my exams on Monday and I was SO NERVOUS coz I keep getting it wrong in every paper. I'm going to try to do the questions with this knowledge now. I'll be back! Thank youuuu
Get exam-ready with my 12 OChem practice exams available only on Chemmunity: chemmunity.info/dave
Join Chemmunity today to get access to 200+ instructional videos, practice problems, and more exams!
Will an electron donating group have an inverse effect on the proton and the chemical shift???@ProfessorDaveExplains
@@18-danijohnfinny64
Yes, an electron-donating group (EDG) can indeed have an inverse effect on a proton's chemical shift in nuclear magnetic resonance (NMR) spectroscopy, compared to an electron-withdrawing group (EWG).
I'm sitting at the University of Washington library and am watching Prof Dave. I look around and see three more computers doing the same. Thank you for saving our lives.
fuck the huskies nerd go cougs
Here I am a year later sitting at the University of Washington library watching Prof Dave explain the same exact concept. The history repeats itself.
@@vkot2292 Chem 238 is killing all of us I guess
Doing the same in the UMass Amherst library right now.
The cycle continues. I also am sat at UW watching Prof Dave. For real, thank you so much. Maybe someday our Ochem professors will learn to teach Ochem.
7 years later and this vid is still saving our asses
8 years down the line and this comment continues to be true.
This 14 minute video was more helpful in me learning about 1H NMR then 5 lectures taught by my prof at uni.
bless up prof dave!!
damn prof. hittin up the ladies ;)
dude I didn't even read your comment before posting but SAME! 5 1 hr lectures and I'm confused as shit. 14 min video and I understand it perfectly.
that what i called proffe...
Saaaaaame
Y’all had 5 lectures just on this? We had one half lecture on it like 2 days ago and my mT is today. 😬
Swear to god I've had 5 lectures of this and i think this is the most complicated shit. Watch your video and I'm not confused at all. Super easy. Heaven sent.
Professor Dave without you i'd be a potato in Organic Chem. Thank you sir
im still a potato....but im a potato that is passing
Hello! I’m a smarter potato.. still a potato, but can pass a test with professor Dave.
@@taliabrooks1275 lol 😂, me too
@@shellyb5014 hey we are all potatoes. As long as we are all potatoes passing together
kkkkkk funy but u r right
My professor uploaded 120 minutes of lectures about NMR, yet you managed to explain it much better and in a more clear way in just 14 minutes. Thank you Professor Dave 🥺
How'd your tests go?
that's just how it works. you could be a scientific genius but that's not necessarily going to make you any good at teaching
That's because these folks are always like "Now, lets explain this with quantum mechaincs" and start shooting some formulas and differentials around the subject and you're losing half of the point because you don't remember them xD
It's like they're guiding you through some forrest, talking about the great view and flowers and trees around, meanwhile you're standing there, watching all this stuff and wondering, if you're standing on a path
I was losing train of thought on this, but all of a sudden this clicked in my head, like a virtual lightbulb going off in my head. After years of being lost in confusion by teachers over complicating this; your simple but EFFECTIVE method made me finally get my head around NMR. Thank you!!
That's awesome to hear! By the way, how did your tests end up going?
I love how I can put off studying for an exam all the way until the weekend before the test date then just watch some Prof. Dave and get over 90% on the exam. Thanks Prof. Dave :)
professor dave, helping students slack off since 2015!
@@ProfessorDaveExplains❤ luv ya
Finally I understand the chemical shift and I'm from Germany, so the fact that I understand your English explanation better than my German professor speaks for itself haha
I understand what it’s like to struggle with “chemical shift”
Same here and i'm from Germany
omgggg I'm gonna cry. I was literally struggling with this and you just saved me with your crystal clear explanations that my lecturer wasn't able to provide.
Thank you so much and I hope you can continue making these kinds of awesome videos and keep helping out students.
Dave, you're doing important work! I was going to say you probably don't know how much you've helped undergrads get through their courses, but I reckon you probably do know! You're like my "professor-on-call"! Much appreciation 🙏
happy to help, thanks for the support!
I'm a Japanese student learning chemistry in university.
This video is very good for not only learning chemistry, but also listening practice of English.
I wish more teachers taught like Professor Dave. He made more sense in 15 minutes than hours of lecture. Thank you professor Dave!
I'm a highschool student from Germany who's currently trying to prepare a presentation on nmr spectroscopy. After desperately not undarsting anything properly and searching for videos in German which aren't an hour long I gave up and searched for English videos. Then I found your video and you just saved my whole presentation! Thank you!!!
In the horse-and-buggy days of NMR, I was the NMR operator/maitainer (because of my electronics training. I had a very poor understanding of biochem). We had a Jeol C-60 unit, a Japanese import having hybrid vacuum-tube and solid-state electronics.
It used an electric field magnet with a "superstabilizer" to minimize fluctuations in the field strength. The magnet was cooled with refrigerated deionized QDW. It could perform both frequency and field-sweep spectra. The purpose was to aid our biochem department in analyzing the structure of DNA with an eye toward cancer research.
Lyons-Kettering Research Center at the University of Alabama at Birmingham in the late 60's/early 70s.
I left because I was a "fish out of water": The only employee there without at least a Master's.
Professor Dave has just explained 50 pages of my textbook of spectroscopy in less than 10 minutes in the most understandable way. Thank you for your teaching. I was completely lost on NMR spectroscopy.
Professor Dave - Saving my ass since gen chem.
and for years to come!
Professor Dave Explains,excellent
i know you get these comments a lot, but your explanations are extremely clear compared to the lectures i sat through. you always contextualize it in a way i can understand by keeping it simple without removing all the important information. it really helps me get the basic idea of what's going on so i can better understand the nitty-gritty details my professor tries to tell me. you're an amazing teacher, and your impact on chemistry students is astounding
I am Presently watching the video of Prof . From Abubakar Tafawa Balewa University. Nice work sir. I have used this video resource to teach my 200 level students, in Organic Spectroscopy. It's nice and concise Sir .
Other than mixing up the terms downfield and upfield a couple times, this video was very helpful at understanding H NMR and how certain pieces of a molecule will produce certain signals. Good video!
went to the comments to make sure I wasn't going insane! thank you
HOLY CRAP!!! Ive been sitting here for HOURS trying to figure out what I was doing wrong, reading and re-reading and you just solved my problem at the 11:19 marker. I had that "lightbulb" moment. This was awesome, thank you!!
You be saving lives dude. He the only reason I passed O-Chem with B.
I’m about to get my masters degree in chemistry, and I still go back to your videos to get some repetition on spectroscopic techniques 🤭
that's me right now! fixing the content that I already know (or am supposed to) and practicing my Organic Chemistry English
Prof Dave is singlehandedly carrying the university level education! Thanks to you, I passed 3 exams, 1 more soon
Are you telling me that I spent 3 weeks trying to understand my professor and you made it in 14 min?! Thank you!
Got confused by the upfield and downfield but then you fixed it.. Great video thank you professor
It's a bit depressing to know I learned more from this short video than I did from the professor I paid 1000's to teach me 😖
Great video! Thank you!
You have an astonishing gift of breaking a complex subject into easily understandable smaller chunks!
Thanks Prof. Dave. Nobody could ever understand this and everyone’s struggling with this subject in my class, the lecturer also refuses to answer questions so thanks a million.
Am I the only person who gets so happy when I search an OChem topic and find a Professor Dave option, never lets me down
facts^^^^^
Man you know how to explain things ! My organic chemistry prof was a very bright mind but he couldn’t be bothered really explaining something to us newbies without it flying over our heads.
Perfect timing for my Organic Chemistry course; thanks Dave!
Dave, I would simply be lost without you.
9:10, there's a little mix up between upfield and downfield. Otherwise, great explanation and clear examples.
Long life Professor Dave. Tons of love.
I have been studying this for about a month and no matter how hard I tried I could not understand NMR but this video helps me understand instantly. Thank you!!!!
seriously this video really helps me to understand the NMR technique in less than an hour. I wish my lecturer explain the concept like this. thanks so much, professor Dave!
You're the best Prof!
I got DAT (Dental Admission Test) coming up in January and your videos are helping TONS :D
good luck!!!
did bruh get into dental school
Do dentists have to know about this for X-Ray purposes or just for Organic Chemistry purposes
@@justustownsend4150 hey brother, 2 years later response but I got into dental school last year
Sal G Congrats man!
Jesus is back to save me
at 12:20 the 2H atoms are relatively downfield cause it is closer to the O atom
the way you demonstrated.................just awesome. hats off, sir..............................
it's crazy how helpful this guy's videos are
I would add to earlier comments that it's also useful to watch videos like these when you already have studied well for exam, to brush up one's knowledge in a more lively way and also to deepen one's earlier knowledge. I learned now first time to understand why different hydrogens in certain functional groups have such peaks they have. God bless you and many thanks.
YOU ARE A LEGEND LIKE MY GOD HOW DO U TEACH SO WELL. MY UNI SPENT LIKE 6 HOURS EXPLAINING NMR AND NOTHING MADE SENSE MY GOD.
This is GREAT for learning during quarantine! THANK YOU GOOD SIR!
I am watching your video from the Missouri S&T chemistry dept. Tomorrow is my mid sem exam on analytical chemistry. Your video has boosted my sense on NMR. Thank you Prof.
U r really helping me a lot sir. Seriously why people give those dislikes in ur videos??? Those are so many dislikes in such a good helpful video. Why??? I really don't understand this!!
they are just mean stupid heads! tell all your friends to subscribe and that will make it all better :)
I will love to do that bro.
Those are just jealous chemistry teachers who can't teach as good as Prof Dave XD
i agree with you
I've been watching your videos since high school and now I'm watching them while in college, thank you for all you do!!
You do not know how many videos I tried to explain NMR. Yours made it click, thank you!!!
I'm so glad I found Dave's videos back in high school, now I'm at second year at uni and still find them to be so helpful
You've explain me NMR Spectroscopy better than anyone! Even though, I'm English is not my first language, it's pure pleasure to learn with you :)
Zuzanna Pawlukowicz ... hey by the way you are damm cute 😅😅
Literally the goat... like why can't a university charging 80 racks teach as good as him?
Actually my prof explained it very well so for me there was no need to come here, but without Professor Dave explaining organic chemistry to me, it wouldn't be the same. So that's why I'm :D
Your videos have helped me in so many ways! I am in the middle of my teaching degree and became lost in Physics class. Your videos have certainly pulled me through and also provided some exceptional tips on how how to teach clearly! Thank you Professor Dave!
Thank you proff ,
I hated NMR as a unit but you have made it easier for me.
May you live for over 100 years to help more generations .
that's an old dave
Learnt more from Professor Dave than three years of A level/GCSE chemistry
100%.
I would say exactly the same, and I also did GCSE & A-Level Chemistry
seriously, thank you. You made this topic easier to understand and less intimidating
Thanks from germany for that explanation. Couldnt understand it in german lol.
After hours of trying to understand nmr using chatgpt this video is a blessing.
"down field = DESHIELDED" upfield is opposite
Thanks for agreeing
OMG!!!!!!!! this was the BEST explanation. Hats off...
God bless you, Professor Dave.
At first I did not understand the explanation completely but once you did the problems it made TOTAL SENSE THANK YOU SO MUCH
I've been watching lots of videos, but your reverse way of looking at it helped a lot :)
Sir, I'm having an exam in bioanalytics tomorrow and - please don't let me jinx it - you are probably saving my butt. Thank you so much!
This is my fav prof Dave content. Keepin it classy.
this 14-minute video alone taught me more about NMR than my "professor" did in 2 hours.
Professor Dave's explanations are God's gift to all of mankind.
Dave, your lessons are as fantastic as your hair
YOU ARE THE BEST!!!! I'm a student from the U.K Studying A level chem!
with you i donot agree
maybe next time
blanakompe
professor dave! thank you so much! i have a major exam tmro and you saved my life!
Halfway through the video and my brain got bigger. Thanks Dr. Dan!
I can't believe i understand the ideas behind the spectrum better after this 15minute video than the last 4hours of lectures in uni...
A 10-15 lecture video of you is weigh better than a week worth of most school professor's lecture.Thanks a lot prof Dave & keep it up !!
I deeply appreciate your contribution and passion towards scientific education. Thank you.
Need to realize that you are my lecturer now , somehow , you help me a lot in chemistry. Thank you Profesor Dave
7yrs later, and still a lifesaver
Great video! recommending it to my colleagues. Thank you.
Professor Dave I scored full in my test because of you.....
Perfect timing for my Chemistry test, thank you Dave!
Man you're saving lives, thanks....
This is the one topic I cant get comfortable with in o. chem. As others said, you broke it down very nicely. Great intro before I delve in more. Thank you for this.
Cool thing to note about the splitting is that it follows Pascal’s triangle, so if it is split into 4 the relative heights of the peaks will be 1 3 3 1, split into 5 the heights will be 1 4 6 4 1, etc
beautiful
GOD BLESS PROF DAVE
You helped me answer my prelab question about whether p-xylene or a cyclohexane would have more peaks on the NMR spectroscopy! Thank you Dave
I didn't know Dave Grohl taught chemistry
After reading my chemestry book. No idea... after your video I feel like the organic chemestry king :D Thank you
Linus_ same goes to me. Hahaha
spent days trying to teach myself this and this helped me so much. in my class my teacher dosent even give us the spectrum already labeled... we have to label it ourselves and match it up to the specific ppm.. talk about hard
im in my 3rd semester in my bachelor of science in chemistry and never understood the nmr spectroscopy but finally i get it cause of you
I finally have an idea of the basics on NMR. Thanks for this.
My professor took two hours explaining this and I understood it better in these 15mins. Now I won’t fail my test, thanks! 😂
This video is the best! Thank you so much Professor Dave. You have been saving my life since gen chem days
This was a better explanation compared to reading about it. Thank you!
Professor Jesus thank you so much this video explained to me in 14 minutes that an hr lecture couldn't god bless
You're super fantastic. Literally wonderful. Without your videos my life would get difficult. Thank you sooooooooooooooooooooooooooooooooooo much
this helped me understand better analyzation via nmr, i recommend also watching the organic chemistry tutor's video on shielding and deshielding if this video is still hard to understand.
oh my god, i thought i would never ever understand the concept of nmr and the spectrum Thanks to you, im so confident in this topic now
Great intro to NMR! Watching this to prepare for my lecture. Thank you Professor Dave! 🙏
Now only I understood the lesson. Thank you so much professor!!! YOU ARE A LIFE SAVER! my exams on Monday and I was SO NERVOUS coz I keep getting it wrong in every paper. I'm going to try to do the questions with this knowledge now. I'll be back! Thank youuuu