How do you account for the difference in energies between the two staggered conformations of 1,2-dichloroethane? How about for the two eclipsed conformations? Draw all four conformations and, on your drawing, indicate sources of strain – torsional, steric (gauche), steric eclipsed.
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How do you account for the difference in energies between the two staggered conformations of 1,2-dichloroethane? How about for the two eclipsed conformations? Draw all four conformations and, on your drawing, indicate sources of strain – torsional, steric (gauche), steric eclipsed.
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- Consider 1-bromo-2-methylpropane and draw the following. (a) The staggered conformation(s) of lowest energy (b) The staggered conformation(s) of highest energyExplain briefly and clearly the following concepts, taking as reference the molecule of n-butane and the corresponding drawings or illustrations. See pages 149-152 of the book Organic Chemistry, sixth edition (J. G. Smith). 4. What is steric hindrance in a conformation? Then draw a picture to illustrate the concept? 5. What is the torsional stress of a conformation? Then draw a picture to illustrate the concept? 6. Describe 1,3-diaxial interaction and illustrate with a specific example.Draw Newman projections for the anti, eclipsed, gauche and fully eclipsed conformations of Butane. Indicate their relative stabilities and the reasons for your ranking-need to discuss the stresses involved in each case. Using suitable specific conformers of specific structures as examples, explain the difference between (a) angle strain (b) torsional strain and (c) steric strain. Need to draw the confomers and structures 4) Draw the most stable conformers using chair structures of the following: (c) cis-1,2-Dibromocyclohexane (d) trans-1,2-Dibromocyclohexane (e) cis-Decalin (f) trans-Decalin . Draw the most stable conformers of trans-1-Bromo-4-methylcyclohexane and cis-1-Bromo-4-methylcyclohexane. Which is more stable? Explain the reason for your answer. Need to include a discussion of 1,3-Diaxial interaction
- Perform a conformational analysis of 1-bromo-2-chloroethane, BrCH2CH2Cl. Pay attention to the relative energies of the various conformations, but do not concern yourself with the actual energy values.Draw the most stable conformation of the molecule while taking into account the approximate values of the energies of the following skew interactions:Draw the Newmann projections of this molecule along the circled bond of this molecule, from the point of view of the eye. You should include and label the syn-periplanar, gauche, anticlinal and anti-periplanar conformations, and whether the conformation is staggered or eclipsed. List these four conformations from most stable to least stable?
- Among the figure, (a) what is the most stable conformation of n-pentane? (b) gauche conformation of butane and (c) least stable conformation of butaneFor the 1,2-dichlorocyclohexane stereoisomers, which conformation of the trans stereoisomer has the lower energy, the diaxial or the diequatorial conformer? Which isomer and conformation of the three you built has the lowest energy? E of all the isomers of 1,2-dichlorocyclohexane. Explain the differences in energy, i.e., identify the sources of strain in the conformations you built. Show the sources of strain in a drawing.Citing down the C3-C4 bond, and using the drawings below, complete the Newman projections for all staggered and eclipsed conformations of hexane. Which staggered conformation has the lowest energy? Which eclipsed conformation has the highest energy?
- Show the Newman projections for the staggered and eclipsed conformations of ethane ?I don't understand why the first one and second one are cis and trans respectively. Wouldn't the first one be trans-1,2-dimethylcyclobutane because the torsional strain wouldn't allow the carbons to be in the same conformation. Meaning one of the carbons would be up and then the next would be down and so on. Since both methyl groups are equatorial and the first and second carbons are arranged up and down, wouldn't it be trans. Same logic for the second molecule. Carbon 1, which is attached to the methyl is down, carbon 3 which is attached to the methyl should be down also because of torsional strain, and since both methyl are in axial (or equatorial?), it would be cis. Or is it based off of the way the carbons are positioned in the picture?Consider the substituted cyclohexane shown in the ball-and-stick model. (See attached) Draw the second possible conformation in the chair form, and classifyit as more stable or less stable than the conformation shown in thethree-dimensional model ?