核磁共振ppt课件内容预览:Chapter 13
pptElectromagnetic Radiation
Wavelength
Molecular Spectroscopy
We study three types of molecular spectroscopy
A pictorial view of UVVis
UVVis radiation is measured in nm
(wavelength)
IR Spectroscopy
IR radiation is measured in cm-1
This is actually a frequency.Remember that frequency and wavelength are inversely proportional.
NMR Spectroscopy
NMR uses radiowaves, measured in MHz
Nuclear Spin States
Any atomic nucleus that has an odd mass, an odd atomic number, or both has a spin and a resulting nuclear magnetic moment.
The allowed nuclear spin states are determined by the spin quantum number, I , of the nucleus.
核磁共振A nucleus with spin quantum number Ihas 2I+ 1spinstates. If I= 12, there aretwo allowed spin states
课件关键字:核磁共振,磁共振,核磁,共振。
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