UCI Chem 131B Molecular Structure & Statistical Mechanics (Winter 2013)
Lec 19. Molecular Structure & Statistical Mechanics -- Spin Rotations T1 & T2.
View the complete course: ../courses/chem_131b_molecular_structure_and_elementary_statistical_mechanics.html
Instructor: Rachel Martin, Ph.D.
License: Creative Commons BY-NC-SA
Terms of Use: ../info.
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Description: Principles of quantum mechanics with application to the elements of atomic structure and energy levels, diatomic molecular spectroscopy and structure determination, and chemical bonding in simple molecules.
Recorded on February 25, 2013.
Index of Topics:
03:49 - Inversion Recovery (T1)
04:59 - Relaxation Along the Z-Axis
05:50 - Moving Tube
05:58 - Relaxation Along the Z-Axis (revisited)
07:02 - Moving Tube (revisited)
08:24 - Moving Tube, Slide 2
09:20 - Spin-Spin Relaxation (T2)
12:29 - Spin Echo (T2)
14:04 - H NMR Spectroscopy: Spin-Spin Splitting
16:40 - Rules for Splitting Patterns
20:23 - Splitting is Generally Not Observed Between Protons Separated by More Than Three σ Bonds
21:18 - The n+1 Rule (For "Simple" Compounds)
23:49 - J-Coupling: Product Basis
26:20 - J-Coupling: Hamiltonian
29:09 - J-Coupling: Product Basis, Slide 2
32:13 - J-Coupling: Equivalent Spins
34:21 - H NMR-- Spin-Spin Splitting: An Example
34:31 - J-Coupling: Equivalent Spins (revisited)
35:11 - H NMR-- Spin-Spin Splitting: An Example (revisited)
36:26 - Standard Coupling Values (J, in Hz)
37:21 - Sample Spectrum
38:28 - More Complex Splitting Patterns: Nitrobenzene
39:14 - The Difference Between a Quartet and a Doublet of Doublets
39:56 - Another Example of Doublets of Doublets
40:17 - A Closer Look at the Splitting Pattern
40:42 - NMR Spectrum Example
42:24 - General 2D Pulse Sequence
44:53 - ^(13)C-^(15)N Correlation of Arginine
45:56 - H-N HSQC
Required attribution: Martin, Rachel. Molecular Structure & Statistical Mechanics 131B (UCI OpenCourseWare: University of California, Irvine), ../courses/chem_131b_molecular_structure_and_elementary_statistical_mechanics.html. [Access date]. License: Creative Commons Attribution-ShareAlike 3.0 United States License.
