Simple C-13 NMR query

  • Thread starter Miffymycat
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Main Question or Discussion Point

In 2-aminobutane, C3 resonates at lower field (ca 33ppm) compared to C1 (ca 23ppm). Is there a simple rationale for this? The extra inductive effect from C4 should increase electron density around C3 and so shift it upfield compared to C2? Any thoughts/answers greatly appreciated.
 

Answers and Replies

  • #2
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Steric effect between amine group and C4?
 

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