Transcription of Electron Spin Resonance Spectroscopy
{{id}} {{{paragraph}}}
Example: stock market
Electron Spin Resonance Spectroscopy
Chapter 4 Electron Spin Electron SpinsUnpaired electrons possess a spinms= 12and, if bound, an orbital angular momentum. The observationof Electron spins is possible in an external magnetic field in experiments very similar to those described fornuclear magnetic Resonance energy of an Electron with spinmscan be expressed as function of the magnetogyric ratio = 10 24JT 1and the g-factor of the Electron (close to 2, but depending on the Electron angular momentum),or as function of the Bohr magneton as shown in equation Please note that the Bohr magnetron is aboutthree orders of magnitude larger than the nuclear magnetron, therefore the energy splitting of Electron spinstates in an external magnetic field is much larger than that that of state energyB0 Magnetic fieldmselectron spin projection Electron magnetogyric ratio bBohr magnetongeelectron g-value = e2me b=e~2meEms= ge ~B0msEms=ge BB0ms( )Stable organic compounds usually have a closed electronic shell, no unpaired electrons and therefore noobservable Electron spin.
4.4. BIOINORGANIC CHEMISTRY 5 Metal ion Catalytic function Mg2+ (Ca2+) Easy hydrolyses, phosphate transfer, (light capture, chlorophyll) Zn2+ …
Loading..
Tags:
Information
Domain:
Source:
Link to this page:
Please notify us if you found a problem with this document: