1. Applied Spectroscopy autumn 2014 Lampmann,Pavia, Kriz and Vyvyan, Spectroscopy Homepage for course: milne.ruc.dk/kemikurser/analytNMR

2. Content NMR MS IR Plus review of traditional analysis methods

3. Elementary analysis

4. Double bond equivalents DBE= (2n C + 2 + n N –n H – n Hal )/2

5. What is NMR Nuclear Magnetic Resonance What can we solve What do we need –Powerfull magnet –Powerful Radio frequency transmitter –Sensitive Receiver –Fast computer

7. Follower

8. Usnic acid

9. Choline(CHo) Creatine(Cr)

10. Alkohol in the brain in time

11. General Scheme

12. NMR system

13. Superconducting NMR magnet 5 magnet coil 6. Liquid nitrogen 7. Liquid helium (4 K) 8.Vacuum 10. Dewar made of stainless steel

15. Beijing 2014Department of Science, Systems and Models Spins

16. Spin quantum numbers

20. Beijing 2014Department of Science, Systems and Models Resonance

21. Operating frequencies

23. Spin distribution B0B0

24. Excess nuclei out of a million

25. Boltzmann distribution Depends on the energy difference between two states For NMR the energy difference is very small The number of spin in the lower and higher energy levels are allmost the same Only few can be moved which means very poor sensitivity

26. Induced currents

27. The chemical shift =  B 0 (1-  )/2 

28. orillgninal NMR spectrum of alcohol

29. Simple NMR spectrum

30. Beijing 2014Department of Science, Systems and Models Methyl acetate 1H 13C

31. Referencing and chemical shifts TMS Beijing 2014Department of Science, Systems and Models

33. Solvent signals

34. Position of water signal

35. Free induction decay

37. Tables

39. Equivalence

40. Integrals

42. Chemical shift overview

45. Electronegativity

46. Effects of a single substitution

47. XH protons

48. Hydrogen bonding!!

49. Ring currents

52. Johnson-Bovey map

53. Anisotropic shielding of C=O groups 10 ppm shielded deshielded shielded

54. Shieldings caused by bonds

55. 90MHz

56. 360 MHz

65. 1 H NMR spectrum of ?