NMR Spectroscopy (Part 1) | Basic Principle | H1 NMR | Dr. Nagendra Singh | PENS#93
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- เผยแพร่เมื่อ 3 ต.ค. 2022
- NMR Spectroscopy (Part 1) | Basic Principle | H1 NMR | Dr. Nagendra Singh | PENS#93
#nmrspectroscopy #nmr #nmrspectra
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.
What is the relationship between nuclear angular momentum and a orbital quantum number . And state the relationship between nuclear angular momentum and magnetic moment?(20/IBT/054)
What is the reason behind less usage of C13 and N15 spectra in NMR spectroscopy ? ( 20/IBT/060)
How does the larmor frequency depends upon the external magnetic field?
(20/IBT/019)
What is the objective of Fourier transformation?
How Fourier Transform converts the time based signal into the frequency based signal i.e.(NMR spectrum)? (20/IBT/050)
Explain Larmor frequency and also describe it's relationship with strength of the magnetic field. (20/IBT/014)
Why use Benchtop NMR Spectrometers?
20/IBT/071
Why Nuclei which have odd no. Of protons spin or act as magnet? (20/IBT/042)
why nulcie with odd number are use.?
ANSWER All nuclei with an odd number of protons (1H, 2H, 14N, 19F, 31P ...) or nuclei with an odd number of neutrons (i.e. 13C) show the magnetic properties required for NMR. Only nuclei with even number of both protons and neutrons (12C and 16O) do not have the required magnetic properties. 20ibt046
Thank you for the easy explanation sir.🌼
i m glad..thank you @19.IBT.039 Saiyada Iqra Kamil
What's the reason behind placing an external field in NMR?? 20/IBT/029
how does dimagnetic shielding affect the energy absorbed by the proton to attain resonance? (20/IBT/003)
Why proton spectrum is fast to acquire compared to nuclei ???
Why radio waves are specifically used in NMR? Why not any other electromagnetic radiation is used? (20/IBT/011)
Nuclei absorb in that range of EMR
What are the transition and non transition metals in NMR Spectroscopy? 20IBT046
What is larmor frequency?
20/IBT/052
sir what if the spin state of a nucleus is already in beta state as u have said in the lecture, will it still release energy to give signals or not, if not how will it be detected
How is the multiplicity of an NMR signal determined and what information does it provide about the molecule or sample being studied?
(20/IBT/048)
The multiplicity of an NMR signal refers to the number of peaks present in the NMR spectrum for a particular chemical shift. It provides information about the number of different environments for a particular nucleus in the molecule or sample being studied.
For example, in a 1H NMR spectrum, a singlet peak indicates that there is only one type of environment for the hydrogen atoms in the molecule, while a doublet indicates that there are two different environments for the hydrogen atoms. A triplet indicates three different environments, and so on.
The multiplicity of an NMR signal can provide valuable information about the structure of the molecule or sample being studied, as it can give insight into the number of different types of bonds present, and can be used to help determine the connectivity of atoms in the molecule.(20/IBT/072)
How come the beta energy state is a higher energy state than the alpha energy state? (20-IBT-062)
simply because beta state is against the applied magnetic field.
Why we use only nuclei with odd number of atoms ?
All nuclei with an odd number of protons (1H, 2H, 14N, 19F, 31P ...) or nuclei with an odd number of neutrons (i.e. 13C) show the magnetic properties required for NMR. Only nuclei with even number of both protons and neutrons (12C and 16O) do not have the required magnetic properties.
@@LovepreetKaur-hz5nv oksksks 👍🏻
What is upfield and downfield shifting??
20-IBT-063
Downfield means higher energy - left side of the spectrum (higher ppm)
Upfield means lower energy - right side of the spectrum (lower ppm)
20/IBT/071
What is the reason behind less usage of C13 and N15 spectra in NMR spectroscopy ? ANSWER- C13 and N15 are not naturally found therefore they are used less.
What is the objective of Fourier transformation? ANSWER- it mathematically converts signals from energy shift to deduce a nmr spectrum.
What is upfield and downfield shifting? What are the factors influencing upfield and downfield shifting? (20/IBT/059)
There are many transition for a nucleus spin...how we select one or choose one for NMR.?? (20-IBT-064)