1. Powerpoint Templates Page 1 Powerpoint Templates Electronic Spectroscopy NMR

2. Powerpoint Templates Page 2 Isotope Natural % Abundance Spin (I) Magnetic Moment (μ)* Magnetogyric Ratio (γ) † 1H1H99.98441/22.792726.753 2H2H0.015610.85744,107 11 B81.173/22.68808,5847 13 C1.1081/20.70226,728 15 N0.371/2-0.2832-2,713 17 O0.0375/2-1.8930-3,628 19 F100.01/22.627325,179 29 Si4.7001/2-0.5555-5,319 31 P100.01/21.130510,840 * μ in units of nuclear magnetons = 5.0507810 -27 JT -1 † γ in units of 10 7 rad T -1 sec -1 μ = γ I

3. Powerpoint Templates Page 3 Nuclear Spins in B 0 E = - μ.B 0 ΔE = γB 0 h/2π

4. Powerpoint Templates Page 4 Values for H atom Applied field strength of 7.05T – 1 H is approximately 0.120 J/mol, which corresponds to a frequency of 300 MHz – 13 C is approximately 0.030 J/mol, which corresponds to a frequency of 75MHz

5. Powerpoint Templates Page 5 ω = γB 0 Larmour frequency

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7. Powerpoint Templates Page 7 For 2.35 T (= 100 MHz) and 300 K one gets for 1H a population difference N(α) - N(β) of ca. 8.10 -6

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9. Powerpoint Templates Page 9 Spin Lattice Relaxation

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13. Powerpoint Templates Page 13 Chemical shift

14. Powerpoint Templates Page 14 Chemical shift (δ): Chemical shift (δ): The shift in ppm of an NMR signal from the signal of TMS

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21. Powerpoint Templates Page 21 Direct Coupling 1 J

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23. Powerpoint Templates Page 23 Geminal Coupling 2 J diastereotopic

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25. Powerpoint Templates Page 25 Vicinal Coupling 3 J Atoms three bonds apart, the coupling is called vicinal coupling