Draw the lowest and highest energy rotamers (rotational conformers) of the molecule given below as Newman Projections along the carbon-carbon bond marked in red (carbon 1 is in the front). Include all H atoms in your Newman Projections. CI .CH3 r 1
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- 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 strainA Newman projection of a disubstituted cyclohexane is shown below. etermine which of the following 2D representations matches the Newman projection. H Br H2 CH3 H H2 Br II Br Br CH3 ICH3 Brl. Br II Br CH3 IV H3C Br Br Br A) I B) II C) II D) IV. Draw the two most stable Newman projections of 3-methylpentane by viewing along the C2-C3 bond.
- In the box below give the Newman projection of the most stable conformer of the molecule shown below looking at the C2-C3 bond (in red). Place C2 in front. On the side list the energy strains that exist in that conformation. 3 CH3Which is the correct newman projection for the following molecule (as drawn below assuming no rotation) when looking down the bond indicated by the arrow? 0 0 Me Me Et Me Me Et Me Me II….. H H H HWhat is the most stable Newman projection of 2-methylbutane (isopentant)
- Rank the following Newman projections in order of increasing energy, from most stable to least stable.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 tale1) Draw an energy diagram for the rotation about the bond depicted in red in the molecule shown below. Draw Newman projections for each local maximum or local minimum energy. Explain your reasoning behind the relative energies depicted in your diagram. to OH