For the following Newman Projection, determine whether it is in the lowest energy conformation as drawn. Then, fill in the Newman Projection for the lowest energy conformation. You may use the table of A-values provided in the instructions to determine the correct answer. 2. [Select] OH 3. [Select] 4. [Select] 5. Select] 5 Is this the lowest energy conformation? [Select] For each number on the partially filled Newman Projection above, select the group that would make the lowest energy conformation. 1. [Select] CH3

For the following Newman Projection, determine whether it is in the lowest energy conformation as drawn. Then, fill in the Newman Projection for the lowest energy conformation. You may use the table of A-values provided in the instructions to determine the correct answer. 2. [Select] OH 3. [Select] 4. [Select] 5. Select] 5 Is this the lowest energy conformation? [Select] For each number on the partially filled Newman Projection above, select the group that would make the lowest energy conformation. 1. [Select] CH3

Organic Chemistry: A Guided Inquiry

2nd Edition

ISBN:9780618974122

Author:Andrei Straumanis

Publisher:Andrei Straumanis

Chapter6: Alkanes & Alkenes

Section: Chapter Questions

Problem 10CTQ: Consider the Newman projection below. a. Draw a full Lewis structure of this molecule with...

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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.
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 Newman projection below. a. Draw a full Lewis structure of this molecule with R1=Me,R2=Et , and R3=iPr . b. Given the sizes of these R groups (R3R2R1) , does the Newman projection above show thelowest potential energy conformation of this bond? If not, draw a Newman projectionshowing the lowest P.E. conformation (sighting down this same bond). c. To draw a Newman projection in the lowest P.E. conformation, the following rule of thumbusually applies: Place the largest group on the front carbon anti to the largest group on theback carbon. Is your answer to the previous question consistent with this rule of thumb?
For the following Newman Projection, determine whether it is in the lowest energy conformation as drawn. Then, fill in the Newman Projection for the lowest energy conformation. You may use the table of A-values provided in the instructions to determine the correct answer. 2. H 3. CH3 (Me) Is this the lowest energy conformation? No For each number on the partially filled Newman Projection above, select the group that would make the lowest energy conformation. 1. CH2CH3 (Et) 4. H 5. CH(CH3)2 (i-prop) 5. 47 2 CH3 .3
For the following conformer, draw a Newman projection looking down the 1,2 (red) bond.
For the the structure shown below, Part A) Draw the Newman projections and 3-D sawhorse structures corresponding to the lowest and highest energy conformations for rotation around the C2-C3 bond. Draw the Newman projections looking FROM THE C2 CARBON TO THE C3 CARBON (i.e. with the C2 carbon in the "front"). Part B) Determine the energy difference between the lowest and highest conformations, and be sure to clearly show each energy contribution that you are including in your calculation. 2,3-dimethylpentane ECLIPSING Interactions AB Energy kcal/mol H/H 1.0 H / Me 1.4 H/Et 1.5 H/i-Pr 1.6 H/t-Bu 3.0 Me / Me 2.6 Me / Et 2.7 Me/i-Pr 3.0 GAUCHE A. Interactions Me / Me Me / Et Me / i-Pr Me / t-Bu Et / Et Et / -Pr Et/t-Bu i-Pr/i-Pr B Energy kcal/mol 0.9 0.95 1.1 2.7 1.1 1.6 3.0 2.0
For the given cyclohexane, please draw both chair conformations. Clearly indicate which one is more stable. Then, looking along the indicated bond, draw the Newman projection of the more stable chair conformation . I tried doing this but I don't understand this question. Please help.
Draw the Newman projections for one staggered and one eclipsed conformation of the molecule below, viewed down the indicated bond in the direction of the arrow. Cl_H Br
For the the structure shown below, Part A) Draw the Newman projections and 3-D sawhorse structures corresponding to the lowest and highest energy conformations for rotation around the C2-C3 bond. Draw the Newman projections looking FROM THE C2 CARBON TO THE C3 CARBON (i.e. with the C2 carbon in the "front"). Part B) Determine the energy difference between the lowest and highest conformations, and be sure to clearly show each energy contribution that you are including in your calculation. Lowest Energy Conformation 3-D sawhorse Newman ECLIPSING Interactions AB H/H H/Me H / Et H/i-Pr Energy kcal/mol 1.0 1.4 1.5 1.6 H/ t-Bu 3.0 Me / Me 2.6 Me / Et 2.7 Mei-Pr 3.0 GAUCHE A. Interactions Me / Me Me / Et Me / i-Pr Me / t-Bu Et / Et Et/i-Pr Et / t-Bu i-Pr/i-Pr 3-D sawhorse Energy kcal/mol Newman 0.9 0.95 1.1 2.7 1.1 1.6 Highest Energy Conformation 3.0 2.0
Compare the following conformers of butan-2-ol. Match each conformer to their corresponding relative energy. Recall, the more stable the conformer the lower the energy. 1. ОН CH3 CH3 H 2nd Highest Energy 2. HỌH CH3 2nd Lowest Energy H3C OH Highest Energy 3. H3C. CH3 Lowest Energy OH H. CH3 4. >
a. Redraw the following cycloalkane in the chair configuration (you need to find which one of the two is the most stable). Then draw the Newman projection of your chair.
Complete the question on paper and snap a photo and upload it as your submission in jpg or pdf format. CI IO H OH a. Generate a Newman projection of the molecule shown above. The red arrow indicated the direction from which your eyes are looking at the molecule. b. Also draw a Newman projection of a conformation that is less stable than the one that you have draw in a. There may be more than one correct option to generate a less stable Newman projection - you need only generate one. You can rotate around the C-C single bond to go between eclipsed and/or staggered conformations. c. Describe why the conformation in b. is less stable than a (name the interactions that make the conformation less stable). Point out where on your structure those interactions are (circling is fine).