NUCLEAR MAGNETIC RESONANCE

Nuclear magnetic resonance (NMR) is a spectroscopic method that is even more important to the organic chemist than infrared spectroscopy. Many nuclei may be studied by NMR techniques, but hydrogen and carbon are most commonly available. Whereas infrared (IR) spectroscopy reveals the types of functional groups present in a molecule, NMR gives information about the number of magnetically distinct atoms of the type being studied. When hydrogen nuclei (protons) are studied, for instance, one can determine the number of each of the distinct types of hydrogen nuclei as well as obtain information regarding the nature of the immediate environment of each type. Similar information can be determined for the carbon nuclei. The combination of IR and NMR data is often sufficient to determine completely the structure of an unknown molecule.

Competitive exams like CSIR-UGC-NET in Chemistry and GATE in Chemistry there is a huge section for nmr studies of molecule.It is one of the main topics for students preparing for CSIR-UGC-NET in Chemistry or taking GATE Coaching in Chemistry.

The nmr data is very important for structure elucidation of unknown compounds.It has a wide use in research work and problems regarding nmr studies requires immense logical aptitude.

Growing competition demands a lot of hardwork and practice.These exams are conducted in order to gain admissions in many reputed colleges in india.The competition in the field of ‘Chemistry and Chemical Sciences’ is very huge and it requires every minor details of the subject. 

NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY PART ONE:

BASIC CONCE NUCLEAR MAGNETIC RESONANCE 

1.    Nuclear Spin States
2.     Nuclear Magnetic Moments
3.     Absorption of Energy
4.    The Mechanism of Absorption (Resonance)
5.    Population Densities of Nuclear Spin States
6.    The Chemical Shift and Shielding

A.    PART TWO: 

CARBON-13 SPECTRA, INCLUDING HETERONUCLEAR COUPLING WITH OTHER NUCLEI 

1.    The Carbon-13 Nucleus
2.    Carbon-13 Chemical Shifts
3.     Calculation of 13C Chemical Shifts
4.     Proton-Coupled 13C Spectra—Spin–Spin Splitting of Carbon-13 Signals 

B.    PART THREE:

 SPIN–SPIN COUPLING

1. Coupling Constants
2. One-Bond Couplings
3. Two-Bond Couplings
4. Three-Bond Couplings
5. Long-Range Couplings

Eligibility criteria for CSIR-UGC-NET in Chemistry
1.M.Sc. or Equivalent degree with at least 55% marks for General & OBC (50% for SC/ST candidates, Physically and Visually handicapped candidates) Candidate enrolled for M.Sc. or having completed 10+2+3 years of the above qualifying examination are also eligible to apply in the above subject under the Result Awaited (RA) category on the condition that they complete the qualifying degree with requisite percentage of marks within the validity period of two years to avail the fellowship from the effective date of award
B.Sc. (Hons) or equivalent degree holders or students enrolled in integrated MS-Ph.D program with at least 55% marks for General & OBC candidates; 50% for SC/ST candidates, Physically and Visually handicapped candidates are also eligible to apply.

Eligibility criteria for GATE in Chemistry

1.    The candidate must have a Bachelor Degree i.e. B.Tech/ B.E./B.Pharm/ B.Arch from a recognized University

2.     Either Bachelor Degree in Science / BSc. Research from recognized University.

3.    The applicants having Master’s Degree in from any stream Mathematics/ Science/ computer or equivalent or Statistics or Five year B.S. / M.S. Progam or M.Tech or M.E. after BSc. Can also apply.

4.  The applicants appearing in the final year of qualifying exam can also apply for exam provided they have to submit the certificate from the Principal of University or College.

5. The candidates, who have passed the qualifying examination, have to submit their certificate or degree certificate or provisional certificate.