6. Newman projections to Lewis structures From the following Newman projections, draw the corresponding Lewis structure in the same conformation. A) B) H. H H₂C N H CH3 OH CI Br CH3 H OH CH3
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- 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?Q1. Please answer the following questions with respect to this structure. но. a) What is the hybridization of all atoms in the molecule? b) There are two double bonds in the molecule. For each, indicate the correct stereochemistry, by circling E or Z.Consider rotation about the indicated bond in the molecule below. Which Newman Projection formula best represents the most stable conformer of the molecule with respect to rotation about the indicated bond? [As noted below: there is no steric strain between -H and -Et that have a gauche, staggered relationship] H CH3 Br-C-C-CH₂CH3 H. H Br CH₂CH₂ 1 CH3 H CH3CH₂ H Br H₂C || H H₂C H Br H ||| Select one: OA. I O B. II O C. III O D. All conformers have identical energies. CH₂CH3 H NOTE CH3CH₂ H no steric strain
- a) b) 4. Assign the absolute configuration of all molecules. Draw the most stable conformer in Newman projects with respect to bond C2-C3; for both a) and b). Draw Fisher projections for all molecules.. F H CI CI 2 2 2 3 CH3 3 3 CH3 CI H H configuration C2 configuration C3 tafa configuration C2 configuration C3 taleWhat Newman projection matches the given compound? CI H3C CH(CH3)2 CI CI H. (а) CH(CH3)2 (b) CH(CH3)2 H3C H. H3C H. CI H CI (с) H. CH3 (d) (H3C),HC H. H3C CH(CH3)2 H H......Draw the Newman pr0jecti0ns 0f the three p0ssible staggered c0nf0rmati0ns 0f2,3-dimethylbutane, viewed thr0ugh the C2—C3 b0nd. What are the relativeenergies of each c0nf0rmati0n?
- Which of the following is a Newman projection for the following compound as viewed down the indicated bond in the conformation shown? H. CH3 01 O II O III OIV Et CH3 1 Et H I CH3 13X Et CH3 -H || CH3 Et H CH3 Et Et ||| CH3 H H H CH3 Ø CH3 H CH3 IVConsider 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 5Which of the following is the correct Newman projection for the following compound as viewed down the indicat conformation shown? CO II O III O IV OV CH3 CH3 CH31 CH3 CI || Br Br H CH3 CH3 ||| Br CH3 CH3 IV CI Br CH3
- Least stable conformer of 2,3-dicholorbutane in Newman projection form.Which of the following conformation is the least stable conformation Newman projection)? CH3 CH3 CH3 CH3 CH;. H CH CH3 H. H H H H H. CH3 CH3 II III I A. I only В. П only C. III only D. both I and IIDraw the corresponding dash-wedge structure for each of the following Newman projections. (a) OCH,CH3 H. Br (b) H (c) H (d) HgC HyCH,CH3 H3C H H3C HYH CH,CH,CH3 CH3 (H3C),C CH3 H. H