NMR spectroscopy in easy way - Part 5 | Magnetic anisotropy and chemical shift

What is diamagnetic anisotropy? It is the non-uniformity of magnetic field due to pi electrons which may either produce shielding or deshielding effect on surrounding portions. In case of alkenes and aromatic compounds, it shows deshielding effect whereas protons attached to alkyne carbon are shielded resulting in decrease in the chemical shift.
Part-1: Principles of NMR spectroscopy : • NMR spectroscopy in ea...
Part -2 : How NMR works : • NMR spectroscopy in ea...
Part-3 : NMR spectral interpretation and rules: • NMR spectroscopy in ea...
Part-4 : NMR spectral table: • NMR spectroscopy in ea...
Part-5 : Magnetic anisotropy: • NMR spectroscopy in ea...
Part-6: Solvents in NMR : • NMR spectroscopy in ea...
Part-7: 1H vs 13C NMR : • NMR spectroscopy in ea...
Part-8: Number of NMR signals: • NMR spectroscopy in ea...
Part-9: Magnetic equivalence: • NMR spectroscopy in ea...
Part-10: NMR signals in cyclic compounds: • NMR spectroscopy in ea...

[@pritamdas527]

So simple to understand! Thanks a lot!

[@sathyagenga5747]

Fantastic explanation.. 👍🙏

[@lorenzodebiasirobles3048]

Nice video!
Saludos desde Argentina!

[@arunaacharya3849]

Awesome!

[@mspradeep3807]

You are legend sir🎈

[@vps1705]

Excellent teaching

[@sebastiankrau8652]

Really good explanation, thanks a lot!

[@egpat]

You are welcome!

[@manjunathhanchinal8064]

Thank you sir 😊

[@ganeshbavche7976]

Great presentation and Great explanation, incredible 💯

[@egpat]

Glad you liked it! Thanks for watching.

[@zakiab3328]

Excellent explanation of deshielding phenomenon 💓

[@egpat]

Glad you liked it. Thanks for watching

[@DipaMitra98BD]

Great Lecture ❤
Thanks a lot🎉

[@egpat]

Most welcome!

[@gunapriya72]

Sir, U saved me

[@cosmiccornerr]

Thanks sir

[@piyushsen7502]

Tnx

[@bondz1e30]

please which one is the part 4 with rules II to V the continuation from part 3

[@rksinh18]

👌👌🙏

[@fasihnaveed4676]

Whats the reason behind arranging alkyne verticaly but other compound benzene and alkane horizontal.?

[@Nana-hz2tr]

He said it was because it was linear and sp hybridized

[@aksatyajeetmajhi7898]

You may arrange in both directions but vertical arrangement of alkene matches with the experimental results. That's why it's arranged. You might argue !! But we developed theories according to experimental results. So simply accept it and move forward.

[@nareshkumar.v6207]

What about alkanes

[@aksatyajeetmajhi7898]

Hello sir, Thanks for the explantaion. But can you please tell, why the magnetic field inside the ring is downward? According to which law or principle you are determining the direction of induced magnetic filed?

[@zakiab3328]

Same question here

[@ashwinikelkar3587]

might be because the pi electrons are delocalised cylindrically over the aromatic ring.

[@aksatyajeetmajhi7898]

@@ashwinikelkar3587 Yeah you are right! you are telling the reason for generation of magnetic field. But cylindrical electron density doesn't answer the direction of magnetic field. If you think this is responsible for the downward direction of magnetic field, why induced magnetic field not in upward direction?

[@mansoorahmad9579]

Right hand thumb rule

[@M_SWMKWR4927]

Sir May i know why alkene is not linear?

[@okindovictor586]

Alkene can't be linear because of bond angle 120

[@manasladdha4601]

The reason for the orientation of alkenes and alkynes is not clear.

[@jeniatanni6259]

Can you provide pdf

[@slguitarists3570]

Indian pronunciation is troublesome

[@mahneh7121]

chemists are terrible at physics