L7 - Weeks 5-8 (Revised Schedule) Week # Experiment 3 NMR...

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Weeks 5-8 (Revised Schedule) Week # Experiment 3 NMR Labs Experiments 4/5 #5 Sept 20 Reflux (if you have not already done it) NMR Prelab A due NMR Lab A - - - #6 Sept 27 Run Column Chromatography NMR Prelab B Work on NMR Lab B - - - #7 Oct 4 Finish Lab 3 Continued Work on NMR Labs A & B Start Exper 4 Prelab 4 due #8 Oct 11 Lab report 3 due NMR Labs A and B report due Continue Exper 4 Start Exper 5 Advice from the TAs Continue good lab hygiene and disposal ethic Lab reports Be careful citing literature from the web - A web link (url) is not a sufficient reference go to the original reference In most cases, your textbook is an adequate reference If you present something verbatim from another source, you need to place it in quotes and give a citation, otherwise it is plargiarism "the wrongful appropriation, close imitation, or purloining and publication, of another author's language, thoughts, ideas, or expressions, and the representation of them as one's own original work .“ [ Wikipedia ] “use or close imitation of the language and thoughts of another author and the representation of them as one's own original work” From 1995 Random House Compact Unabridged Dictionary : Nuclear Magnetic Resonance (NMR) Spectroscopy m Different nuclei can have different spin numbers: 12 C, 16 O; I = 0 1 H, 19 F, 13 C, 31 P; I = ½ for I = ½, spin states are a (+½) and b (-½) m = magnetic moment In the presence of a magnetic field, B 0 , the energies of the spin states are different (NMR not possible) (NMR possible) Spin - quantized angular momentum Spinning charge creates a magnetic field Not aligned Aligned Page 1
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