8. Arrange these conformations in order of internalenergy. List the highest energy conformation first.CHH CH₁CH₁H,C CHHHH,C.H-HHHHHHHHHCH₁H₁CHH123(A) 1>2>3>4(C) 4>2>3>1(B) 4>3>2>1(D) 2>3>1>4

A conformation of a molecule is said to contain high internal energy if the conformation does not…

Answered: 8. Arrange these conformations in order…

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter3: Organic Compounds: Alkanes And Their Stereochemistry

Section3.SE: Something Extra

Problem 47AP: Draw the most stable conformation of 1,4-dichlorobutane, using wedges and dashes to represent bonds...

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Following is a chair conformation of cyclohexane with the carbon atoms numbered 1 through 6. (a) Draw hydrogen atoms that are above the plane of the ring on carbons 1 and 2 and below the plane of the ring on carbon 4. (b) Which of these hydrogens are equatorial? Which are axial? (c) Draw the alternative chair conformation. Which hydrogens are equatorial? Which are axial? Which are above the plane of the ring? Which are below it?
Consider the molecule 1-bromo-2-methylbutane. C3 and C4 should be drawn as Et as in theexample. This group is called an ethyl group and can be considered a sphere about twice the sizeof a methyl group. Draw the following Newman projections sighting down the C1C2 bond... a. The lowest potential energy conformation. b. The highest potential energy staggered conformation.
Fill in the blanks: cis-1,3-Dimethylcyclohexane has two different chair conformations: one withboth methyl groups in __________ positions and one with both methyl groups in ____________ positions.
The diaxial conformation of cis-1, 3-dimethylcyclohexane is approximately 23 kJ/mol (5.4 kcal/mol) less stable than the diequatorial conformation. Draw the two possible chair conformations, and suggest a reason for the large energy difference.
Identify the most stable chair conformation of the most stable isomer of 1,4-diethylcyclohexane. II II IV | || II IV
1E.) Which of the following two conformers is lower in energy? Both conformers are of equal enery O A Conformer A is lower in energy. B Conformer B is lower in energy. It cannot be determined
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
وCH H3C ۵- کلرو-۲- ایزوپروپیل سیکلو هگزانون 2 3.
4.(a). Draw the structures of (i) cis-1,4-Dibromocyclohexane and (ii) trans-1,4- Dibromocyclohexane. 4(b). Draw the most stable conformers of (i) cis-1,4-Dibromocyclohexane and (ii) trans-1,4-Dibromocyclohexane. 4(c)Which is more stable? (i) cis-1,4-Dibromocyclohexane or (ii) trans-1,4- Dibromolcyclohexane. Explain the reason for your choice.
(a) Classify each of the following pairs of structures as constitutional isomers, conformational isomers, configurational isomers or identical. Br and Br Br NH, CH, HO но H,C. ii. and CH, CH, Vi. and он Ph CH, он CH, Ph iv. and
5. (a) Identify the relationship of the two compounds below. (b) Write the most stable chair conformation for each. Br CH₂ and A. identical B. constitutional isomers C. stereoisomers D. unrelated Br CH₂
Which conformer(s) below represents highest energy staggered conformation of 2- methylbutane? H H CH3 CH3 I 1 || H ||| CH3 I and II CH3 Ø H₂C H II H CH3 H H CH3 H III CH3 CH3

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8. Arrange these conformations in order of internal energy. List the highest energy conformation first. CH H CH₁ CH₁ H,C CH H H H,C. H -H H HH H H HH H CH₁ H₁C H H 1 2 3 (A) 1>2>3>4 (C) 4>2>3>1 (B) 4>3>2>1 (D) 2>3>1>4