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a) Based on the approach/notation/data presented in lecture what is the appropriate chemical shift increment for group B that must be used in the process for predicting the chemical shift of proton Ha? Group B HA но. b) Using the approach/notation/data presented in lecture what is the predicted chemical shift of protons Hc in ppm? Please provide just the numerical value, expressed with one decimal place, along with an asterisk if appropriate. Do not include units. CI CI Hc HC c) Rank compounds D, E and F from most stable to least stable (most stable first). compound D compound E compound F

a) Based on the approach/notation/data presented in lecture what is the appropriate chemical shift increment for group B that must be used in the process for predicting the chemical shift of proton Ha? Group B HA но. b) Using the approach/notation/data presented in lecture what is the predicted chemical shift of protons Hc in ppm? Please provide just the numerical value, expressed with one decimal place, along with an asterisk if appropriate. Do not include units. CI CI Hc HC c) Rank compounds D, E and F from most stable to least stable (most stable first). compound D compound E compound F

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Please provide me with the answer to question 1 (all thrree parts). The values from the provided chemical table shift increments need to be used for the problem, thanks.

 

 

a) Based on the approach/notation/data presented in lecture what is the appropriate chemical shift increment for group B that must be used in the process for predicting the chemical shift of proton Ha? Group B HA но. b) Using the approach/notation/data presented in lecture what is the predicted chemical shift of protons Hc in ppm? Please provide just the numerical value, expressed with one decimal place, along with an asterisk if appropriate. Do not include units. CI CI Hc HC c) Rank compounds D, E and F from most stable to least stable (most stable first). compound D compound E compound F
Transcribed Image Text:a) Based on the approach/notation/data presented in lecture what is the appropriate chemical shift increment for group B that must be used in the process for predicting the chemical shift of proton Ha? Group B HA но. b) Using the approach/notation/data presented in lecture what is the predicted chemical shift of protons Hc in ppm? Please provide just the numerical value, expressed with one decimal place, along with an asterisk if appropriate. Do not include units. CI CI Hc HC c) Rank compounds D, E and F from most stable to least stable (most stable first). compound D compound E compound F
Table of chemical shift increments Connecting Atom/Group Additional Atom(s) Present Increment (ppm) Type of Proton nô (ppm) Just hydrogen and/or sp³ carbon 0.0 2.4 R- sp° carbon At least one that is not a hydrogen or sp³ carbon 0.0* н Just hydrogen and/or sp carbon 0.9 5.0 to 5.5 Alkene At least one that is not a hydrogen or sp³ carbon 0.9* R. Just hydrogen and/or sp° carbon 0.9 Alkyne ROH Highly variable At least one that is not a hydrogen or sp³ carbon 0.9* RNH2 1 to 4 Just hydrogen and/or sp³ carbon 1.2 Sulfur At least one that is not a hydrogen or sp³ carbon Just hydrogen and/or sp³ carbon At least one that is not a hydrogen or sp carbon Just hydrogen and/or sp³ carbon At least one that is not a hydrogen or sp³ carbon Just hydrogen and/or sp³ carbon At least one that is not a hydrogen or sp carbon 1.2* н 1.4 7 to 8 1.4* 1.2 Nitrogen 9 to 10 1.2* R- 1.2 10 to 12 1.2* R-E-OH Он 2.4 Just hydrogen and/or sp3 carbon 2.4 At least one that is not a hydrogen or sp3 carbon 2.4* Just hydrogen and/or sp³ carbon At least one that is not a hydrogen or sp³ carbon Just hydrogen and/or sp° carbon At least one that is not a hydrogen or sp³ carbon 3.0 3.0* 2.8 2.8* 1.2 Just hydrogen and/or sp carbon 1.2 At least one that is not a hydrogen or sp carbon 1.2* C=N (aka the CN group) 1.2 Chlorine 2.1 Bromine 1.8 lodine 1.3
Transcribed Image Text:Table of chemical shift increments Connecting Atom/Group Additional Atom(s) Present Increment (ppm) Type of Proton nô (ppm) Just hydrogen and/or sp³ carbon 0.0 2.4 R- sp° carbon At least one that is not a hydrogen or sp³ carbon 0.0* н Just hydrogen and/or sp carbon 0.9 5.0 to 5.5 Alkene At least one that is not a hydrogen or sp³ carbon 0.9* R. Just hydrogen and/or sp° carbon 0.9 Alkyne ROH Highly variable At least one that is not a hydrogen or sp³ carbon 0.9* RNH2 1 to 4 Just hydrogen and/or sp³ carbon 1.2 Sulfur At least one that is not a hydrogen or sp³ carbon Just hydrogen and/or sp³ carbon At least one that is not a hydrogen or sp carbon Just hydrogen and/or sp³ carbon At least one that is not a hydrogen or sp³ carbon Just hydrogen and/or sp³ carbon At least one that is not a hydrogen or sp carbon 1.2* н 1.4 7 to 8 1.4* 1.2 Nitrogen 9 to 10 1.2* R- 1.2 10 to 12 1.2* R-E-OH Он 2.4 Just hydrogen and/or sp3 carbon 2.4 At least one that is not a hydrogen or sp3 carbon 2.4* Just hydrogen and/or sp³ carbon At least one that is not a hydrogen or sp³ carbon Just hydrogen and/or sp° carbon At least one that is not a hydrogen or sp³ carbon 3.0 3.0* 2.8 2.8* 1.2 Just hydrogen and/or sp carbon 1.2 At least one that is not a hydrogen or sp carbon 1.2* C=N (aka the CN group) 1.2 Chlorine 2.1 Bromine 1.8 lodine 1.3
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