
Concept explainers
(a)
To determine: What does the length of C-N bond in peptide linkage indicate about its strength and its bond order.
Introduction:
Peptide bond is defined as the type of
(a)

Explanation of Solution
Explanation:
Length of the body is defined as the distance present between two atoms that are bonded together by covalent bond. Order of the bond is defined as the number of chemical bonds that are found in between paired atoms. So, if a chemical bond has a higher bond order, then bonds between atoms are shorter and stronger. Bond length indicates bond order. The length of
Conclusion:
Bond length depends on bond order and bond length. In C-N, it indicates that it lies between single and double bond and its strength is intermediate.
(b)
To determine: The observations of Pauling and Corey that tell about the ease of rotation about
Introduction:
Peptide bond is defined as the type of chemical bond which is formed between carboxyl group of one amino acid and amino group of another amino acid. It is a type of dehydration synthesis reaction which involves removal of water molecule.
(b)

Explanation of Solution
Explanation:
Pauling and Corey accomplished that the peptide C-N bond cannot rotate freely as they have partial double bond characters. The rotation occurs between
Conclusion:
No free rotation in C-N bond is observed.
Want to see more full solutions like this?
Chapter 4 Solutions
EBK LEHNINGER PRINCIPLES OF BIOCHEMISTR
- (c) (4pts) Mechanism: heat (E1) CH3OH + 1.5pts each _E1 _ (1pt) Br CH3OH (d) (4pts) Mechanism: SN1 (1pt) (e) (3pts) 1111 I H 10 Ill!! H LDA THF (solvent) Mechanism: E2 (1pt) NC (f) Bri!!!!! CH3 NaCN (3pts) acetone Mechanism: SN2 (1pt) (SN1) -OCH3 OCH3 1.5pts each 2pts for either product 1pt if incorrect stereochemistry H Br (g) “,、 (3pts) H CH3OH +21 Mechanism: SN2 (1pt) H CH3 2pts 1pt if incorrect stereochemistry H 2pts 1pt if incorrect stereochemistryarrow_forwardA mixture of butyl acrylate and 4'-chloropropiophenone has been taken for proton NMR analysis. Based on this proton NMR, determine the relative percentage of each compound in the mixturearrow_forwardQ5: Label each chiral carbon in the following molecules as R or S. Make sure the stereocenter to which each of your R/S assignments belong is perfectly clear to the grader. (8pts) R OCH 3 CI H S 2pts for each R/S HO R H !!! I OH CI HN CI R Harrow_forward
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY





