The difference in energy between eclipsed and staggered ethane if 12 KJ/mol. Assuming there is no...
The difference in energy between eclipsed and staggered ethane if 12 KJ/mol. Assuming there is no angle strain, calculate the strain energy of planar cyclopentane (all carbons in the same plane).
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The difference in energy between eclipsed and staggered ethane
if 12 KJ/mol. Assuming there is no...
The terms that best describe the isomeric relationship between staggered and eclipsed ethane are： A：configurational, achiral,...
The terms that best describe the isomeric relationship between staggered and eclipsed ethane are： A：configurational, achiral, diastereomers. B：conformational, chiral, enantiomers. C：conformational, achiral, diastereomers. D：configurational, chiral, enantiomers. E：conformational, achiral, enantiomers.
REPORT SHEET FOR CONFORMATIONAL ANALYSIS OF ALKANES AND CYCLOALKANES Ethane caMMFF Calculated Energies (kcal/mole) from Property...
REPORT SHEET FOR CONFORMATIONAL ANALYSIS OF ALKANES AND CYCLOALKANES Ethane caMMFF Calculated Energies (kcal/mole) from Property box MMFF Energy AMI Energy (heat of 3-21GO Energy kJ/mole Compound Ethane staggered Ethane eclipsed: formation) (kJ/mole a.u Note: I a.u. (atomic unit)-I hartree 2625.5 kJ/mole For each calculation determine the energy barrier to rotation around the C-C bond in units of kJ/mole by subtracting the energy of eclipsed from the energy of staggered. (Hint: to obtain the 3-21G) value, subtract energies first, then...
H H eclipsed H-CH3 eclipsed CH3 - CH3 eclipsed CH3 - CH3 gauche 3.0 kJ/mol 4.0...
H H eclipsed H-CH3 eclipsed CH3 - CH3 eclipsed CH3 - CH3 gauche 3.0 kJ/mol 4.0 kJ/mol 6.0 kJ/mol 11 kJ/mol 3.8 kJ/mol Question 12 8.33 pts (3R.45) 3,4-dimethylhexane is optically active and rotates plane-polarized light to the left. is optically inactive because it is racemic. is optically active and rotates plane-polarized light to the right. O is optically active, but its direction of rotation of plane-polarized light can only be determined by experiment. is optically inactive because it is...
M eclipsed • CH3 - CH3 eclipsed • CH3 CH3 gauche 6.0 kJ/mol 11 kJ/mol 3.8...
M eclipsed • CH3 - CH3 eclipsed • CH3 CH3 gauche 6.0 kJ/mol 11 kJ/mol 3.8 kJ/mol D Question 7 8.33 pts What is the relationship between the two structures shown? diastereomers different conformations of the same molecule O identical different compounds with different molecular formulas enantiomers Next • Previous
Wethance ethane, and the other moleules ore Consiling bonding because they share electran Provide an example...
Wethance ethane, and the other moleules ore Consiling bonding because they share electran Provide an example of ionic bonding and provide an example of covalent bonding- [2 points] Teeyond. he example (Na) and el for the ionic bond and for the covalent band is. Steps 3.1 to 3.6 (CH) are methance Is the conformation of ethane staggered or eclipsed after the instructions in Step 3.17 Record the calculated energy of this configuration (include units)? 12 points] Is the conformation of...
2.16. Using a Newman projection, draw a staggered and eclipsed 2.17. For alkanes containing four or...
2.16. Using a Newman projection, draw a staggered and eclipsed 2.17. For alkanes containing four or more carbons, use the Newman projection to draw 2.18. Describe what contributes to the changes in the potential energy of an alkane as you on of an alkane. (Section 4.7) the gauche and anti conformations. (Section 4.8) rotate around a carbon-carbon bond. (Section 4.7 & 4.8) energy conformations. (Section 4.7 &4.8) carbon bond. (Section 4.7 & 4.8) 2.19. Use a sawhorse projection or Newman...
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...
Strain Energy Increments Strain Energy for Alkanes Interaction / Compound kJ/mol kcal/mol H: Heclipsing 4.0 1.0 H: CH3...
Strain Energy Increments Strain Energy for Alkanes Interaction / Compound kJ/mol kcal/mol H: Heclipsing 4.0 1.0 H: CH3 eclipsing 5.8 1.4 CH3 : CHз eclipsing 11.0 2.6 gauche butane 3.8 0.9 cyclopropane 27.5 115 cyclobutane 110 26.3 cyclopentane 26.0 6.2 cycloheptane 26.2 6.3 cyclooctane 40.5 9.7 Ln Axial Strain Energies for Monosubstituted Cyclohexanesa,b This table gives the sum of the values for the 1,3 diaxial interactions of the substituent with two hydrogen atoms. Substituent(solvent) К/mol kcal/mol -CНз 7,3 1,7 -CH-CHз...
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...
Strain Energy Increments Strain Energy for Alkanes Interaction/Compound kJ/mol kcal/ 4.0 H: Heclipsing 1.0 H: CH3...
Strain Energy Increments Strain Energy for Alkanes Interaction/Compound kJ/mol kcal/ 4.0 H: Heclipsing 1.0 H: CH3 eclipsing 5.8 1.4 CH3 : CH3 eclipsing 11.0 2.6 gauche butane 3.8 0.9 cyclopropane 115 27.5 cyclobutane 110 26.3 cyclopentane 26.0 6.2 6.3 cycloheptane 26.2 cyclooctane 40.5 9.7 Axial Strain Energies for Monosubstituted Cyclohexanesab This table gives the sum of the values for the 1,3 diaxial interactions of the substituent with two hydrogen atoms. kJ/mol kcal/mol Substituent(solvent) -CH3 1.7 7.3 CH2CH3 7.5 1.8 -CH(CH3)2...
REPORT SHEET FOR CONFORMATIONAL ANALYSIS OF ALKANES AND CYCLOALKANES Ethane caMMFF Calculated Energies (kcal/mole) from Property box MMFF Energy AMI Energy (heat of 3-21GO Energy kJ/mole Compound Ethane staggered Ethane eclipsed: formation) (kJ/mole a.u Note: I a.u. (atomic unit)-I hartree 2625.5 kJ/mole For each calculation determine the energy barrier to rotation around the C-C bond in units of kJ/mole by subtracting the energy of eclipsed from the energy of staggered. (Hint: to obtain the 3-21G) value, subtract energies first, then...
H H eclipsed H-CH3 eclipsed CH3 - CH3 eclipsed CH3 - CH3 gauche 3.0 kJ/mol 4.0 kJ/mol 6.0 kJ/mol 11 kJ/mol 3.8 kJ/mol Question 12 8.33 pts (3R.45) 3,4-dimethylhexane is optically active and rotates plane-polarized light to the left. is optically inactive because it is racemic. is optically active and rotates plane-polarized light to the right. O is optically active, but its direction of rotation of plane-polarized light can only be determined by experiment. is optically inactive because it is...
M eclipsed • CH3 - CH3 eclipsed • CH3 CH3 gauche 6.0 kJ/mol 11 kJ/mol 3.8 kJ/mol D Question 7 8.33 pts What is the relationship between the two structures shown? diastereomers different conformations of the same molecule O identical different compounds with different molecular formulas enantiomers Next • Previous
Wethance ethane, and the other moleules ore Consiling bonding because they share electran Provide an example of ionic bonding and provide an example of covalent bonding- [2 points] Teeyond. he example (Na) and el for the ionic bond and for the covalent band is. Steps 3.1 to 3.6 (CH) are methance Is the conformation of ethane staggered or eclipsed after the instructions in Step 3.17 Record the calculated energy of this configuration (include units)? 12 points] Is the conformation of...
2.16. Using a Newman projection, draw a staggered and eclipsed 2.17. For alkanes containing four or more carbons, use the Newman projection to draw 2.18. Describe what contributes to the changes in the potential energy of an alkane as you on of an alkane. (Section 4.7) the gauche and anti conformations. (Section 4.8) rotate around a carbon-carbon bond. (Section 4.7 & 4.8) energy conformations. (Section 4.7 &4.8) carbon bond. (Section 4.7 & 4.8) 2.19. Use a sawhorse projection or Newman...
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...
Strain Energy Increments Strain Energy for Alkanes Interaction / Compound kJ/mol kcal/mol H: Heclipsing 4.0 1.0 H: CH3 eclipsing 5.8 1.4 CH3 : CHз eclipsing 11.0 2.6 gauche butane 3.8 0.9 cyclopropane 27.5 115 cyclobutane 110 26.3 cyclopentane 26.0 6.2 cycloheptane 26.2 6.3 cyclooctane 40.5 9.7 Ln Axial Strain Energies for Monosubstituted Cyclohexanesa,b This table gives the sum of the values for the 1,3 diaxial interactions of the substituent with two hydrogen atoms. Substituent(solvent) К/mol kcal/mol -CНз 7,3 1,7 -CH-CHз...
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...
Strain Energy Increments Strain Energy for Alkanes Interaction/Compound kJ/mol kcal/ 4.0 H: Heclipsing 1.0 H: CH3 eclipsing 5.8 1.4 CH3 : CH3 eclipsing 11.0 2.6 gauche butane 3.8 0.9 cyclopropane 115 27.5 cyclobutane 110 26.3 cyclopentane 26.0 6.2 6.3 cycloheptane 26.2 cyclooctane 40.5 9.7 Axial Strain Energies for Monosubstituted Cyclohexanesab This table gives the sum of the values for the 1,3 diaxial interactions of the substituent with two hydrogen atoms. kJ/mol kcal/mol Substituent(solvent) -CH3 1.7 7.3 CH2CH3 7.5 1.8 -CH(CH3)2...
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