lect_11 - LECTURE 11 BIZARRE EFFECTS THAT DESTROY THE N+1...

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Unformatted text preview: LECTURE 11 BIZARRE EFFECTS THAT DESTROY THE N+1 RULE REVIEWING A 2 X 2 & AAXX Pg 126 AAXX or mag non-equi Never 1 st order spectra! Magnetic Non-Equivalence Magnetic Non-Equivalence H-1 F F 3-H Cl H-4 2-H Cl 2 H 2 H gem to gem to F = F = enantiotopic or homotopic enantiotopic or homotopic 2 H 2 H gem to gem to Cl = Cl = enantiotopic or homotopic enantiotopic or homotopic H(1,3) H(1,3) & & H(2,4) H(2,4) each chem equiv A A 2 M M 2 X X 2 spin system? spin system? J J H1 H1- H2 H2 J J H1 H1- H4 H4 AA AA MM MM XX spin system!! XX spin system!! H(1,3) H(1,3) & & H(2,4) H(2,4) each mag non-equiv C 9 H 10 O 2 No OH P123 MAG EQUIV VS. MAG NON-EQUIV MAG NON-EQUIV (1) CHEM EQUIV (2) TWO SETS OF Hs w/NON-EQ Js MANY SIGNALS!! C 2 H 2 F 2 , ortho-dichloro-BZ MAG EQUIV VS. MAG NON-EQUIV CHEM EQUIV HOMOTOPIC ONE SIGNAL MAG EQUIV (1) CHEM EQUIV (2) EQ Js ONE SIGNAL SINGLETS CH 2 Br 2 , para-BZ MAG NON-EQUIV (1) CHEM EQUIV (2) TWO SETS OF Hs w/NON-EQ Js MANY SIGNALS!!...
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This note was uploaded on 08/06/2008 for the course CHEM 124 taught by Professor Amagata during the Winter '08 term at UCSB.

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lect_11 - LECTURE 11 BIZARRE EFFECTS THAT DESTROY THE N+1...

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