Lecture 7. Introduction to NMR Spectroscopy: Concepts and Theory, Part 1.

This video is part of a 28-lecture graduate-level course titled "Organic Spectroscopy" taught at UC Irvine by Professor James S. Nowick. The course covers infrared (IR) spectroscopy, mass spectrometry, and nuclear magnetic resonance (NMR) spectroscopy, the latter of which is the main focus. Topics covered in the NMR spectroscopy part of the course include chemical shifts, spin-spin coupling, dynamic effects in NMR spectroscopy, and 2D NMR spectroscopy (COSY, HMQC, HMBC, TOCSY, NOESY, ROESY).



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[chenyuezhao]

Although it's the graduate course, it's still crystal clear about the basic concepts of NMR ! Very helpful!

[dulcedeavellana]

I've been always told that the theory of NMR is very difficult; it was really clear and simple the way professor Nowick explained. Thanks a lot!!

[abdeltawabali]

Thank you so much and could you please, where can i get this serious of lessons collectively?

[salimkamil]

Dear Sir: Thank you very much. I'm asking about two things:
1- How to calculate spin quantum number ( I) to 1/2 or 3/2 or....
2- Why should neutron affect the NMR ? I mean H has one proton but it's charged and it affect and affected by magnetic filed, while D has one proton and one neutron but we can see it by NMR, why? while the difference is Neutron ( which is not charged)???

[ijastk]

Consider lower energy state A(110 A)
and higher energy state A*(100 A)(higher energy level already have 1 hv).
We have to give 210 hv (RF),
110 A + 110 hv => 110 A*
100 A* +100 hv => 100 A + 2OO hv (de-excitation with emission of hv )
total absorption 10 hv

[thaaerkhalil]

Thanks, it is perfect explain. what are good references(book) for this topic?

[nazninakhter]

Sir, Thanks... . I always pray for you.

[salimkamil]

I'm again wondering how do we calculate that ( I)? whee did come from ? what is its rule

[chin-soonphan]

When I using JEOL delta software to do proton integration, I found that -COOMe (methyl acetate), this ester methyl or methoxy is not around 3, but 2, why? The other methyls of this molecule is around 3. I thinking was it because one hydrogen loss?

[judithajima]

i enjoyed watching this and at same time learnt a lot. Thank you for this video

[chin-soonphan]

For example, a solution have total 210 molecules. 100 molecules are spin down (high energy) and 110 molecules are spin up (low energy). So when resonance, 110 spin up absorb energy to flip and become 110 spin down? Or only 10 spin up as excess population will absorb energy to flip and become 10 spin down?

[ChrisParsons]

Great lecture, very useful!  Thanks for sharing.

[billyjean]

in NMR its always the excess I believe

[sunrisetoo]

Who knows the textbook used in this course? Thanks.

[djopa]

chemistry videos, the only usefull videos at this channel

[ihshort]

why nucleus spin? please answer  this question!