For 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.

For 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.

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter6: Alkanes & Alkenes

Section: Chapter Questions

Problem 4E: Consider the molecule 1-bromo-2-methylbutane. C3 and C4 should be drawn as Et as in theexample. This...

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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 derivative of cyclohexane A and its representation in chair conformation B: 7 3 H3C $1 Ń 4 9 1 2 Complete Structure B: 3 4 5 6 7 8 9 HO 10 AT Choose... H OH electron lone pair CH3 CH2OH Choose... Choose... Choose... Choose... F Choose... OH ◆ + ♦ ◆ H 10 B 6 5
Please explain me this question.
a) i) Draw the Newman projections for the conformations of ethane (staggered and eclipsed) Which is higher in energy? Which is more stable? Next to each conformer, draw the equivalent ‘sideways’ view, using wedged bonds
, draw its and then in the 2. For (1R, 2S, 4R)-4-tert-buyl-1-ethyl-2-methylcyclohexane: draw its correct skeletal structure most stable conformer first showing the Hydrogens that are directly attached to the ring last stusture omit the hydrogens that are directly connected to the ring and draw the correct positions of the three alkyl groups in skeletal representation. Draw all bonds with the same length! 5. draw the correct skeletal structure here showing stereochemistry on this chair draw the most stable conformer including the H's directly attached to the ring on this chair draw only the alkyl groups, all bonds same lenght
See attached question.
In each case below, identify the higest and lowest energy conformations. In cases where two or three conformations are degenerate, choose only one as your anwser. Use Me, H, and Et when drawing the structures.
For 1,2-dichloroethane: ( Q.) Which eclipsed conformation(s) has (have) the lowest energy? Which has (have) the highest energy?
Consider the structural/conformational isomers of isopropyldimethylcyclohexane shown below. Match each isomer to the statement that best describes its properties. VHas the least steric repulsion / steric strain. EVHas the most torsional and steric strain overall Me iPr, VHas a syn-pentane interaction between two (or more) non-hydrogen substituents Me VIs the lowest energy boat conformation shown В. H. Ме iPr Me C. Me iPr `Me H D. iPr Me Me E. Me Me H- iPr
a. b. For the following two pairs of molecules, (1) Draw out the chair conformation for each molecule, flip the ring if it is possible. (2) Compare both molecules to circle out which one is more stable. (3) Identify their relationship as: constitutional isomer, conformational isomer, stereoisomer or identical. (4) Find all the chiral center on each molecule and label them. Br.. Ax < and and H. H H Br H H
corresponding to the systelmalilC Thumu projection that illustrates the highest energy conformation of n-propane along any C-C bond axis of the same. Again, place your answer in the space provided. Molecular formula Highest energy conformation of n-propane of n-propane OVER >
a. b. For the following two pairs of molecules, (1) Draw out the chair conformation for each molecule, flip the ring if it is possible. (2) Compare both molecules to circle out which one is more stable. (3) Identify their relationship as: constitutional isomer, conformational isomer, stereoisomer or identical. (4) Find all the chiral center on each molecule and label them. Br and ZX- and VS. H H H Br H H ∞