Basic Introduction to NMR Spectroscopy

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This organic chemistry video tutorial provides a basic introduction to NMR spectroscopy. It explains the basic principles of a working nmr spectrometer. It discusses the alpha and beta spin states and how to calculate the operating frequency needed given thee strength of the applied magnetic field. NMR spectroscopy works with nuclei with odd number of protons or neutrons. These nuclei have a property called spin which can absorb radio frequency radiation when the appropriate magnetic field is applied to it.
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@TheOrganicChemistryTutor 6 ай бұрын

Organic Chemistry PDF Worksheets: www.video-tutor.net/orgo-chem.html Full-Length Exams and Worksheets: www.patreon.com/MathScienceTutor/collections

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Update?

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@biorgoanylchem 2 жыл бұрын

@@89TNash When I took calc 4 class, the prof was polish guy with a very thick polish accent. From the day1 90% of class started complaining about prof that they can’t understand anything. In the end those 90% ended up with an avg D, majority failing, while the rest got A. Thing is, for those 10% it was a breeze because they focused on learning. So in the end who cares if he’s earning 150k, you’re paying a lot more, so why not enjoy the process and focus on learning and not on teaching style, are you afraid its going to toughen you up? You learn to accept adversity, whether it be in teaching style or anything, you’ll have a much easier time, adapt easily, and also enjoy the process. But I can understand your pain bro, just suck it up and focus on the bigger picture, i mean it is your money at the end of the day 🤷‍♂️

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@theronlauren411 2 жыл бұрын

I have been confused about this topic for days. Your explanation and diagrams are so great that I finally understand NMR. Thank you

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@jessicadominguez3561 4 жыл бұрын

I thought I'd never understand this- you made it SO simple. Thank youuuuuuuuuuu!!!!!!!!!!!

@sarahholland5980 3 жыл бұрын

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@litchfirmian7562 3 жыл бұрын

I swear to god this gentleman knows everything on Earth.

@PunmasterSTP Жыл бұрын

Basic introduction? More like “Beautiful instruction!” 👍

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@shobanaj4659 3 жыл бұрын

Basics of NMR explained in a clear and concise manner

@novelsolomon2871 5 жыл бұрын

omg i needed this, i didnt even watch the video yet

@nameisenigma 3 жыл бұрын

hey man, you're a cool guy, thanks for learning me this and making this easy

@rahman1314 9 ай бұрын

Dude, you deserve my professor’s salary.

@nikhilm4418 5 жыл бұрын

Great explanation! Thanks!

@alketalule6106 2 жыл бұрын

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A year later and we are still in the pandemic XD

@sotonyestanley8965 2 ай бұрын

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@gravimagswnforce9123 2 жыл бұрын

very interesting and very well explained! thanks

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Amazing tutor 🙏

@ibrahimnoah4740 7 ай бұрын

One ov the greatest tutorial explanation ever🎉

@shamlove788 4 жыл бұрын

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Wow. If only you had uploaded this video like 8 hours ago...

@queenofhell92 Ай бұрын

Great introduction thx so much ❤

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@mohammadhossein641 5 жыл бұрын

could you do a video about realxations(like spin-lattice relxation)?

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@wafabelhadjali2144 5 жыл бұрын

thank you a lot but please can you make a video on transpositions ( organic chemistry )

@NickTheHunter 2 жыл бұрын

Greate explanation! Thank you very much! Is there a formula for calculating gamma as well?

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Too good Explanation.

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unique explanation ,

@Nour.alamoura 8 ай бұрын

Thank you alot

@cobaltutopia 5 жыл бұрын

Do you think you could do more videos on NMR spectroscopy - videos on the magnetogyric ratio, vector model, fourier transform NMR and so on?

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Thank yu

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We need teachers like you

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@maartenkuiper4618 6 ай бұрын

Great video! Thank you for that. Question: are there nuclei that flip to B-spinstate when subjected to a magnetic field, without the need for RF energy?

@Anushkajain443 Жыл бұрын

Nice video

@MuhammadAhmad-cp1np Жыл бұрын

Thanks to u for three things: Black background Calm voice & Wise pauses in videos.

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But who is this guy that knows almost every subject of science?

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I hear the words “in this video” and I already know everything’s going to be okay

@yaseenkardar5257 4 жыл бұрын

Note: The nucleus only possesses overall ‘spin’ if only the NUCLEON number is odd. If both the proton number and neutron number are odd, the nucleon number will be even and the nucleus cannot be used for NMR. Great video nonetheless. Thanks.

@harleystachel7225 4 жыл бұрын

Sorry but this is not right. If both proton and neutron number is odd, the nucleus may posses a whole integer spin eg 14N or 2H

@randomyoutubeguy959 3 жыл бұрын

@@harleystachel7225 true, 1 unpaired proton and 1 unpaired neutron do not cancel out eachother because they are parallel, but they will add up and their net spin will be 1. Even tho they have a non zero net spin, they cant be use for nmr bc for nmr they only focus on the use of halfspin nucleus or (i=1/2).

@II-th7bn 2 жыл бұрын

Fan of yours

@user-xi1kl8jv3s Жыл бұрын

Hello everyone! I have a problem with interpretation of nmr spectrum. I think I use coupling constant incorrectly. How indicate organic structure coresponding by using nmr spectrum?

@DanFrederiksen 5 жыл бұрын

Also you write a 11T field. That's very high for an MRI but is that a practical level for a momentary electromagnet in just spectroscopy? or is that just an arbitrary value for the calculation.

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Ah, our wizard explains the Black Magic. Please accept my thumbs up in gratitude.

@riefkyichsan4816 2 жыл бұрын

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@user-jp8te3mq5g Жыл бұрын

Where did you get that gamma? Its constant or what?

@tarehjernetarehjerne4082 3 жыл бұрын

In 8 minutes you explained what the teacher couldn't in half a year

@poojasabu3293 3 жыл бұрын

Why does some of the nuclei move in a direction opposite to that of the applied magnetic field?

@win_cole 3 жыл бұрын

Just a wild guess, but I think they only do when the radio-frequency hits them. Atoms in general can only absorb discrete packets of energy, so the nuclei can only flip entirely or not at all (and not, say, half way). If they flip, they have higher energy than the unflipped ones, and want to go back to the lower level of energy (where they are aligned with the external B) and by doing so they release the same radio-frequency they had absorbed. The NMR apparatus registers this last radio-frequency, which is different for every element

@williamstaffieri9023 Жыл бұрын

So at 8:54 you got gamma, but I am confused on where you are getting it from

@josephsabu9739 4 жыл бұрын

How can a proton in the nucleus spin? Doesn't protons and neutrons are held together in the nucleus...?How could a proton see spin about is axis?

@saki7952 5 жыл бұрын

Will you create video on probability dice problem?

@kokugoe6023 5 жыл бұрын

go watch bozeman...he has few vids on it

@ZamurdAtif 2 ай бұрын

why the 2 pie can someone tell?

@michaelx9079 3 жыл бұрын

I ran an NMR spectrometer 20 years ago...... main thing about it is the constant fear it might leak it's liquids that should be gases......I still don't quite get what they do.......but it's powerful magic that kills mechanical watches

@xiaoshen194 4 жыл бұрын

Can deuterium show spectroscopy? I mean it has just 1 proton and 1 neutron, so mass is 2 but there is only 1 proton!!

@randomyoutubeguy959 3 жыл бұрын

it might, but i think in case of NMR, they only focus on half-spin (I=1/2) nucleus, so I dont think it will show any signal.

@shahrbanoosadeghi6422 2 жыл бұрын

👏👏

@nishantsaikia5985 4 жыл бұрын

Wow. Most Indian videos confused me. Urs is a good one Can anyone answer me why does proton acquire with or against the magnetic field direction? I mean what is the reason for attaining alpha or beta?

@mallorieblair 3 жыл бұрын

I think it's because they're at different energy levels- one is weak enough to have the spin flipped by magnetic field and the other is not.

@mallorieblair 3 жыл бұрын

Also the local magnetic field

@ernstboyd8745 Жыл бұрын

saying that the mass number being odd is a little misleading. the number of protons and the number of neutrons may both be odd then the mass number will be even

@albeon_draken 2 жыл бұрын

I hate this so much. I was doing *so well* in my Organic Chem class this semester...until this NMR mess came along. Now my A is probably gone. Still going to need to figure it out over the summer. I have to take the second level of ochem next semester and I'm sure it won't be kind enough to never remind me this exists.

@graggip 3 жыл бұрын

You have it wrong about the magnetic property of the nucleus, is not because of the motion. The nucleus is not moving has the electrons do. Is given precisely by the property of the spin itself, up and down cancelled each other. Odd numbers give magnetic moment.

@manncobots2521 3 жыл бұрын

Liked the video without even watching it lmao

@28ebdh3udnav 4 жыл бұрын

Drunk people think they are smart like this yet are actually like Homer....

@maspoetry1 2 жыл бұрын

h+ producing B has nothing to do afaik

@davesims7917 4 жыл бұрын

How do we know these proteins have an odd number of protons or neutrons?

@raghua9318 4 жыл бұрын

Are you asking how many protons / neutrons in a given nucleus?

@davesims7917 4 жыл бұрын

Raghu A I think that’s what I was asking, haha Now that it’s four months old I’m not really sure but that seems to make sense.

@officialkirkferentz916 3 жыл бұрын

Sir I owe you my degree

@saikrishnabiswas8627 3 жыл бұрын

ghonchi monchi

@BankruptGreek 5 жыл бұрын

7:53 just because you asked, no I wasn't wondering what gamma stands for because you absolutely butchered it, it's written γ or like a fish pointing down (without the tail line)

@tiegan7158 3 жыл бұрын

I thought he did it wrong but his gamma looks better imo

@BankruptGreek 3 жыл бұрын

@@tiegan7158 it's unrecognisable, even something like this "γ" is wrong (depends on your device's font). The common way has an opening at the bottom, like this but rotated anticlockwise "∝". or in some styles even if there isn't an opening you can still tell the person did a loop at the bottom and not a y or v corner

@DanFrederiksen 5 жыл бұрын

Good video although I'd recommend prepared images. Writing in real time is unnecessary. Like hand writing a book while someone is reading it. Chalkboard teaching is not efficient. And making a point out of what mega means, may be unnecessary at this level :) The frequency of 500MHz, does that limit resolution? I'm thinking in terms of MRI and such. 500MHz is very large waves or is there a way around that? I suppose you select the location by gradient and the 500MHz is just the carrier, not resolution limiter? Meaning you must scan voxel by voxel, ruling out a global mode instant scan.