NMR Spectroscopy (Part 2) | NMR Spectra | Chemical Shift || Dr. Nagendra Singh | PENS#94

NMR Spectroscopy (Part 2) | NMR Spectra | Chemical Shift || Dr. Nagendra Singh | PENS#94
#nmrspectroscopy #nmrspectra #chemicalshift
NMR spectroscopy is the use of NMR phenomena to study the physical, chemical, and biological properties of matter. Chemists use it to determine molecular identity and structure. Medical practitioners employ magnetic resonance imaging (MRI), a multidimensional NMR imaging technique, for diagnostic purposes.
The Lectures are given Dr. Nagendra Singh aiming to spread basic understanding and awareness of biological molecules and reactions. Dr. Nagendra Singh finished his Doctoral and Post Doctoral studies from "All India Institute of Medical Sciences" (AIIMS) New Delhi. Dr. Singh has a vast experience of research and Teaching in the fields of Structure & Molecular Biology and Biochemistry, which also include Biomolecules, Proteomics, Protein Engineering and Drug Design.
Dr. Nagendra Singh currently works at the School of Biotechnology, Gautam Buddha University, Greater Noida, INDIA (www.gbu.ac.in/FacultyProfiles/.... He does research in Molecular Biology, Structural Biology and Biotechnology. His current research interest include 'Structural and functional characterization of proteins involved in RNA metabolism from human and microbial origin. Dr Singh has published over 70 research articles in intentional Journals of good repute. He has over 20 awards and honors on his name. Few of the awards include "National Academy of Sciences of India (NASI, Allahabad) young scientist award", UGC-NET, CSIR-JRF, GATE, Best Research Awards etc. Dr. Singh has participated and presented research work at over 50 national and International conferences world wide.

[@avinash_choudhary_]

Why are we adding paramagnetic compound to the sample before running a NMR experiment? (20/IBT/005)

[@Shashank_23]

Why in case of alkynes field produced by moving electon opposes the applied magnetic field? (20/IBT/019)

[@Satakshi_]

If we have a compound with mobile pi electron and if you are adding paramagnetic electrons to It so what will happen.
1.will the effective magnetic field increase
2. decrease
(20-IBT-060)

[@KumaripranjalIBT]

Why is the intermolecular hydrogen bonding in hexafluroacetylacetone is not disrupted after adding ccl4? (20/IBT/054)

[@harshitasingh2723]

Sir, at 14:21, it is mentioned that the more the electronegative atom, the more will be its ppm(delta value), whereas on the same page it's mentioned that NMR withdrawal causes NMR signal to appear at high frequency. I find it quite contrasting and confusing as well sir. (20/IBT/009)

[@proteinengineering007]

More electronegative atom causes more deshielding hence the peak will appear more downfield. a higher value of PPM means a downfield peak.

[@tanushridixit199]

Explain Diamagnetic anisotropy.
20- IBT-052

[@LovepreetKaur-hz5nv]

Why is the range at which most NMR absorptions occur is narrow? 20IBT046

[@caim18]

How can I calculate cross-linking density of a vulcanized rubber using NMR spectroscopy?
20/IBT/071

[@tanudev1910]

What do we use as controls (Positive and Negative) for the observation of attained peaks??t?(20/IBT/068)

[@ayushisingh6109]

Spin-spin coupling in NMR comes out only if nuclei are coupled by covalent bonds( by means of paired electrons) it is not a result of simple proximity such as binding, adsorption etc. Why?

[@proteinengineering007]

thats because covalent distances are shorter than just proximity

[@parthsharma5993]

How can it deduce the structural difference in case of Isomers??? (20/IBT/041)

[@proteinengineering007]

wait for NMR part 3

[@_RinkiSingh]

What is shielding in NMR?(20/IBT/065)

[@LovepreetKaur-hz5nv]

The local magnetic fields can either oppose or augment the magnetic field.
if the field created by the electron oppose the external field, nuclei experience an effective field which is smaller than the external field and it is said to be Shielding.
It is of two types Upfield and Downfield .

[@_IBT_AnnanyaSharma]

How will we magnify the splitness?
20_IBT_38

[@Ananyaaaa24]

If To a compound containing different types of electronegative atoms at once, we add paramagnetic electrons will the chemical shift increase?

[@tanudev1910]

Yes! Since paramagnetic electrons are excited state contributions, there must be an increase in chemical shift (20-IBT-068)

[@LovepreetKaur-hz5nv]

what makes NMR so useful for structure determination in organic chemistry? 20ibt046

[@IBTShrutiVerma]

Why is NMR used in medicine?

[@caim18]

NMR spectroscopy is the use of NMR phenomena to study the physical, chemical, and biological properties of matter.
Chemists use it to determine molecular identity and structure. Medical practitioners employ magnetic resonance imaging (MRI), a multidimensional NMR imaging technique, for diagnostic purposes
20/IBT/071