which strains are present or not present?
Homework Answers
1.torsional strain is occur when there is change in torsional angle takes place so if we rotate c-c sigma bond than repulsion caused by the electrons of H and CH3 group when they pass by each other result torsional strain. Hence torsional strain is present
2. Angle strain is not present here because it is symmetric molecule and the ideal angle is 109°28' is maintained.
3. H is not as bulky as can produce a appropriate strain with methyl group so here no steric strain
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which strains are present or not present?
Specify the types of strain that destabilize the conformer...
Explain please Specify the types of strain that destabilize the conformer shown below. Hint: All bonds...
Explain please
Specify the types of strain that destabilize the conformer shown below. Hint: All bonds not explicitly shown are in the staggered conformation. 1. Torsional strain 2. Angle (ring) strain 3. Steric (van der Waals) strain CH3 Previous
[Review Topics (References Specify the types of strain that destabilize the conformer shown below. Hint: All...
[Review Topics (References Specify the types of strain that destabilize the conformer shown below. Hint: All bonds not explicitly shown are in the staggered conformation 1. Torsional strain 2. Angle (ring) strain 3. Steric (van der Waals) strain HC
Specify the types of strain that destabilize the conformer shown below. Hint: All bonds not explicitly...
Specify the types of strain that destabilize the conformer shown below. Hint: All bonds not explicitly shown are in the staggered conformation. 1. Torsional strain 2. Angle (ring) strain 3. Steric (van der Waals) strain CH3 H H H. H CH3 Calculate strain energy for the conformer pictured below, using strain energy increments from the table. Strain Energy for Alkanes Interaction / Compound kJ/mol kcal/mol 4.0 1.0 H: H eclipsing H: CH3 eclipsing CH3 : CH3 eclipsing 5.8 1.4 11.0...
How can I tell if there is Bond Angle strain, Steric Strain, or Torsional strain just...
How can I tell if there is Bond Angle
strain, Steric Strain, or Torsional strain just by looking at the
conformations?
(2 points) 7. List all of the types of strain in the following (2 points) 8. List all of the types of strain in the following conformation. Do not rotate any bonds. Use BAS, TS and/or SS. conformation. Do not rotate any bonds. Use BAS, TS and/or SS. If If no strain is present, write "NO Strain" no strain...
Identify and count the interactions that destabilize the following conformation, and compute its strain energy using...
Identify and count the interactions that destabilize the following conformation, and compute its strain energy using the values provided in the table. (Be sure to specify units and to enter zero for interactions not present.) HCH3 Hafa C CH Strain Energy Increments H Interaction Strain (kJ/mol) H eclipsing 4.0 H CH3 eclipsing 6.0 CH3 CH3 eclipsing 11.0 CH3 – CH3 gauche 3.8 H-H eclipsing C H -CH: eclipsing C CH3-CH3 eclipsing C CH3-CH3 gauche Total strain energy is kJ/mol
14. What types of strain are found in trans--1,3-dimethylcyclohexane? CH3 7 SCH a. Angle strain b....
14. What types of strain are found in trans--1,3-dimethylcyclohexane? CH3 7 SCH a. Angle strain b. Torsional strain c. Steric strain d. More than 1 of the above 15. Which of the following compounds is meso? OH | H | C | 16. Which of the following Fischer projects is for an achiral molecule?! OH | OH OH OH Hㅐ 애 H HH HO|—H HO|H H —OH HOẠ |_H 바애 애 HI-OH HI-OH HOH HOLH HO HO HO ㅎF 호...
Please help to answer this, so I can understand this, Thanks !! 5.) (12 points) For...
Please help to answer this, so I can understand this, Thanks
!!
5.) (12 points) For 2,3-dimethylpentane, (CH3)2CH-CH(CH)2 (a) sighting along the indicated bond, draw all possible staggered conformers using Newman projections, identify the strains, ergy of each conformer, and rank the conformers according to stability (b) draw the least stable eclipsed conformer, show the strains, and give the total strain energy. (See Reference Section at end of test for strain-energy values.) (4 points) Cyclopropane has a total strain energy...
6. Build the cyclobutane ring and study the angle strain and torsional strain. Draw the structures to explain thes...
6. Build the cyclobutane ring and study the angle strain and torsional strain. Draw the structures to explain these factors. 7. The conformation of cyclobutane is slightly folded. Folding gives partial relief from the eclipsing of bonds, as shown in the Newman projection. Compare this actual structure with the hypothetical planar structure. Draw the relevant structures. 8. trans-1,2-Dimethylcyclobutane is more stable than cis-1,2-dimethylcyclobutane, but cis-1,3- dimethylcyclobutane is more stable than trans-1,3-dimethylcyclobutane. Use the molecular models to find the reasons for...
Page C 1) What functional group is NOT present in the structure below? a. alkyne b....
Page C 1) What functional group is NOT present in the structure below? a. alkyne b. alkene c. ether d. aldehyde e. amine 2) What is the correct IUPAC name for the molecule below? a. 3-tert-butyl-4-methylhexane b. 3-tert-butyl-4-methylpentane c. neononane d. 3.ethyl-2,2,4-trimethylpentane e. 1-ethyl-1-isopropyl-tert-butane 3) Which molecule will have the highest boiling point? tinio 4) How many different constitutional isomers may be formed upon monochlorination with Cly/light of the alkane shown below? 5) How many secondary hydrogen atoms are present...
3. What types of strain are present? CH3 b. CH CIA CH)CH? 4. For the compound...
3. What types of strain are present? CH3 b. CH CIA CH)CH? 4. For the compound below a. Label each OH as axial or equatorial b. Is it cis or trans c. Draw the second chair conformation o
Explain please
Specify the types of strain that destabilize the conformer shown below. Hint: All bonds not explicitly shown are in the staggered conformation. 1. Torsional strain 2. Angle (ring) strain 3. Steric (van der Waals) strain CH3 Previous
[Review Topics (References Specify the types of strain that destabilize the conformer shown below. Hint: All bonds not explicitly shown are in the staggered conformation 1. Torsional strain 2. Angle (ring) strain 3. Steric (van der Waals) strain HC
Specify the types of strain that destabilize the conformer shown below. Hint: All bonds not explicitly shown are in the staggered conformation. 1. Torsional strain 2. Angle (ring) strain 3. Steric (van der Waals) strain CH3 H H H. H CH3 Calculate strain energy for the conformer pictured below, using strain energy increments from the table. Strain Energy for Alkanes Interaction / Compound kJ/mol kcal/mol 4.0 1.0 H: H eclipsing H: CH3 eclipsing CH3 : CH3 eclipsing 5.8 1.4 11.0...
How can I tell if there is Bond Angle
strain, Steric Strain, or Torsional strain just by looking at the
conformations?
(2 points) 7. List all of the types of strain in the following (2 points) 8. List all of the types of strain in the following conformation. Do not rotate any bonds. Use BAS, TS and/or SS. conformation. Do not rotate any bonds. Use BAS, TS and/or SS. If If no strain is present, write "NO Strain" no strain...
Identify and count the interactions that destabilize the following conformation, and compute its strain energy using the values provided in the table. (Be sure to specify units and to enter zero for interactions not present.) HCH3 Hafa C CH Strain Energy Increments H Interaction Strain (kJ/mol) H eclipsing 4.0 H CH3 eclipsing 6.0 CH3 CH3 eclipsing 11.0 CH3 – CH3 gauche 3.8 H-H eclipsing C H -CH: eclipsing C CH3-CH3 eclipsing C CH3-CH3 gauche Total strain energy is kJ/mol
14. What types of strain are found in trans--1,3-dimethylcyclohexane? CH3 7 SCH a. Angle strain b. Torsional strain c. Steric strain d. More than 1 of the above 15. Which of the following compounds is meso? OH | H | C | 16. Which of the following Fischer projects is for an achiral molecule?! OH | OH OH OH Hㅐ 애 H HH HO|—H HO|H H —OH HOẠ |_H 바애 애 HI-OH HI-OH HOH HOLH HO HO HO ㅎF 호...
Please help to answer this, so I can understand this, Thanks
!!
5.) (12 points) For 2,3-dimethylpentane, (CH3)2CH-CH(CH)2 (a) sighting along the indicated bond, draw all possible staggered conformers using Newman projections, identify the strains, ergy of each conformer, and rank the conformers according to stability (b) draw the least stable eclipsed conformer, show the strains, and give the total strain energy. (See Reference Section at end of test for strain-energy values.) (4 points) Cyclopropane has a total strain energy...
6. Build the cyclobutane ring and study the angle strain and torsional strain. Draw the structures to explain these factors. 7. The conformation of cyclobutane is slightly folded. Folding gives partial relief from the eclipsing of bonds, as shown in the Newman projection. Compare this actual structure with the hypothetical planar structure. Draw the relevant structures. 8. trans-1,2-Dimethylcyclobutane is more stable than cis-1,2-dimethylcyclobutane, but cis-1,3- dimethylcyclobutane is more stable than trans-1,3-dimethylcyclobutane. Use the molecular models to find the reasons for...
Page C 1) What functional group is NOT present in the structure below? a. alkyne b. alkene c. ether d. aldehyde e. amine 2) What is the correct IUPAC name for the molecule below? a. 3-tert-butyl-4-methylhexane b. 3-tert-butyl-4-methylpentane c. neononane d. 3.ethyl-2,2,4-trimethylpentane e. 1-ethyl-1-isopropyl-tert-butane 3) Which molecule will have the highest boiling point? tinio 4) How many different constitutional isomers may be formed upon monochlorination with Cly/light of the alkane shown below? 5) How many secondary hydrogen atoms are present...
3. What types of strain are present? CH3 b. CH CIA CH)CH? 4. For the compound below a. Label each OH as axial or equatorial b. Is it cis or trans c. Draw the second chair conformation o
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