Lecture 3: Coupling Constants Chem 117 - GitHub Pages

Chem 117E. KwanLecture 3: Coupling ConstantsJanuary 31, ConstantsScope of LectureEugene E. Kwanenergy diagramsfor J couplingthe chemicalshiftHelpful References chemical Fermicontactmodelfirst- vs. second-order spectraHoye's methodwhat aretypicalcouplings?problemsolving1. Nuclear Magnetic Resonance Lambert, ; Mazzola, Prentice-Hall, 2004. (Chapter 3)2. The ABCs of FT-NMR Roberts, University Science Books, 2000. (Chapter 10)3. Spectrometric Identification of Organic Compounds (7th ed.) Silverstein, ; Webster, ; Kiemle, Wiley, 2005. (useful charts in the appendices of chapters 2-4)4. Organic Structural Spectroscopy Lambert, ; Shurvell, ; Lightner, ; Cooks, Prentice-Hall, Organic Structure Analysis Crews, P.

E. Kwan Lecture 3: Coupling Constants Chem 117 Here is the observed spectrum at 90 MHz in CDCl 3 (Lambert and Mazzola, pg 101): Uh oh: there are some 10 lines visible! Note that this odd appearance will not be improved by going to a higher magnetic field strength.

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