Anisotropic effect in 1H NMR

Magnetic anisotropy means a "non-uniform magnetic field". Electrons in π-systems (aromatics, alkenes, alkynes, carbonyls etc.) under the influence of external magnetic field induce a magnetic field which is anisotropic in nature ie at some places it is parallel to the external magnetic field and at other places it is opposite to the external magnetic field. As a result, the nearby protons will experience 3 fields: the applied field, the shielding field of the valence electrons and the field due to the π-system. Depending on the position of the proton in this third field, it can be either shielded or deshielded.

[@zanaibirshad5381]

Best lecture

[@ChemWis]

Thanks for watching

[@enlighteningchemistry9057]

Sir , today for the first time I watch Ur channel & this video ...Ur really explained in soo simple version ... thanks

[@ChemWis]

Thanks and welcome

[@manjuraj7741]

Thank you sir for the crystal clear explanation 🙏 .

[@faisaljaah7316]

Why ring current moving anti clockwise they also can clockwise so all shielded change into deshielded???

[@rania9534]

I think that is because, by Lenz's Law, induced magnetic field opposes the change in the external magnetic field. So in the loop, as external B increases, the induced current will be anticlockwise.

[@arpitasharma1059]

omg found it so useful , thank u sir for such a nice explanation.

[@Anjani.97]

Very nice explanation sir

[@ChemWis]

Thanks and welcome

[@chemistryspecialjamcsirnet2660]

Very good explanation

[@deepadeepa-jt1hx]

Tq fr ur valuable video and nice explanation sir ...

[@ChemWis]

Keep watching

[@deeanstefan9856]

Thank you very much , this is very kind of you !

[@ChemWis]

You are welcome!

[@shrishwagh5831]

Good

[@anjanaav9393]

Very helpful sir...Thank you sir

[@j.hephzibahpriyadarshiniix5199]

Thank you very much sir.it is very useful to me

[@ChemWis]

Welcome!

[@Pritikumari-xy5nb]

easy to understand 👍

[@-Saikiran-vk5mj]

Helpful !!!

[@aradhyadevsaraf4304]

😀 nice sir

[@ChemWis]

Thanks and welcome

[@orgo4384]

So helpful👍👍👍

[@ChemWis]

Glad it was helpful!

[@meeraantony7317]

Thank you sir

[@dilipvasava1798]

Sir, How do get negative value in 1HNMR? The range in 0-12ppm

[@mkhcdri]

Much helpful

[@ChemWis]

Thank you!

[@saiteja6742]

Pls do more sir

[@prabhatseems]

❤

[@rajasekhar6552]

Tq sir could u pls explain abt chemically and magnitically equivalent and non equivalent and naming of it

[@ChemWis]

Sure

[@ChemWis]

Hello Raja,
I have uploaded video on chemically equivalent and magnetically equivalent nuclei in NMR. Below is the link for the same:
ruclips.net/video/Pe4qQUWgqaw/видео.html