Question

16. Draw the Newman projection (viewing down the C3-C4 bond) for the two staggered conformations of hexane that have different energies. Indicate the conformation with the lowest energy. (5 pts) 17. Consider the molecule below. (10 pts) CZ Bry Br CI a) Is this molecule chiral? Provide an explanation. b) Draw both chair configurations for this molecule, and circle the more stable conformation (if applicable).

Answer 1

O structure of hexone. the main chain of hexane is the horizontal zig-zag line of carbon alom The group of Ca are HiH and CH₂ The group on g are 4.4 and C4 C4 -CH- The en groups on C-2 on the front carbom atom but the group on the bottom, the two H-atoms go on the other bonds The group go on the balk carbon. the bulky (14 24-CH₂ group goes on the top and too H-atoms go on the other bonds. He hC-CH₂ LH he ne che 14h cho HY и The most stable contermed the lowest stable conformer

17) a Is this molecule not chiral. because it is planes but center of symmetry present. Super imposable most stable because (a) and a group equatorial position less stable, becaurse a, and a group present in axial position

Energy Stability Thus the lowest onergy cont esgy conformes is ch.ch - 242 cha because it has bulky methyl and propyl group art i to each other.