2. Rank the indicated protons in increasing order of chemical shift. Fill in the boxes with the correspondants lett...
است PROBLEM 16.14 Rank protons A-C in order of increasing chemical shift. لا : The second useful trend is as follows:
2. (0) Rank the indicated protons in order of DECREASING acidity. Give reason for your choice. H2 (ii) Rank the following anions in order of INCREASING basicity. Explain your choice.
Rank the indicated carbon atoms in order of increasing chemical shift. Ca Cb C Br
Rank the indicated protons below in order of increasing ppm on a 'H-NMR. нь Н. она, Нь, Н. НЬ, На. Но ОН, Нь. На она. Н., Нь онь, Но, На
Rank the labeled protons in order of increasing acidity. 3 being most acidic. Briefly explain why. Rank the labeled protons in order of increasing acidity ( + 1, 2, 3, where 3 = most acidic) Briefly explain why.
Explain briefly this observation of chemical shift for these aliphatic protons indicated with an arrow. -0.5 ppm H2C
Explain briefly this observation of chemical shift for these aliphatic protons indicated with an arrow. -0.5 ppm H2C
For each set of compounds shown below, rank them in order of the 'H NMR chemical shift of their ortho hydrogen atoms, labeling the structures "1" (highest) through "3" (lowest). 12 pts each 6pts) a) 1. NH2 b) Ha c) NH2 CN NO2 2. Would you expect the 'H NMR chemical shift of the ortho hydrogen atoms of the phenoxide anion to be higher or lower than those of phenol? Explain briefly. [2 pts он vs For each set of...
10c.) Indicate the chemical shift in ppm's of each of the protons and carbons indicated in the appropriate diagram below. These values should be experimental values from the NMR you obtained. The C NMR is provided for you. If you did not form the desired product, indicate this and predict what the ppm values should be. proton NMR results carbon NMR results 10d.) What splitting pattern would you expect to see for protons A and B in 'H NMR?
Classify the indicated protons in order of chemical displacement, where #1 is the smallest chemical displacement, and #5 is the highest chemical displacement Classez les protons indiqués par ordre croissant de déplacement chimique où le numéro 1 représente le déplacement chimique le plus petit et le numéro 5 le déplacement chimique le plus élevé: N. HN' He на нь Há H. 15 Ha He < Hd He < нь