ELECTRON SPIN RESONANCE SPECTROCOPY.ppt

31 pages
20 views

Please download to get full document.

View again

of 31
All materials on our website are shared by users. If you have any questions about copyright issues, please report us to resolve them. We are always happy to assist you.
Share
Description
brief discussion of principle, instrumentation and applications
Tags
Transcript
    Presented by Namitha K N I  st  year M PharmDepartment  of Pharmaceutical Chemistry  ELECTRON SPINRESONANCESPECTROCOPY  Contents  Introduction  Theory of ESR  Instrumentation and Working  ESR Spectrum  Hyperfine splitting  Determination of G value  Application  ecron pn esonanceSpectroscopy    It is a branch of absorption spectroscopy in which radiation having frequency in microwave region is absorbed by paramagnetic substance to inducetransition between magnetic energy level of electronwith unpaired spins.  Magnetic energy splitting is done by applying a staticmagnetic field.  Absorption spectroscopy, operate at microwavefrequency 10 4 – 10 6 MHz (~1.0 J mol-1)  ã ESR Phenomenon is shown by:   1.  Atoms having odd number of electrons. 2. Ions having partly filled inner electron shells 3. Other molecules that carry angular momentum of electronic srcin. 4. Free radicals having unpaired electrons. 5. Molecules with paired electrons and zeromagnetic field.
Related Search
We Need Your Support
Thank you for visiting our website and your interest in our free products and services. We are nonprofit website to share and download documents. To the running of this website, we need your help to support us.

Thanks to everyone for your continued support.

No, Thanks