8. Newman projections. a. Fill in the missing substituents in the boxes provided when looking down the 2 to 3 carbon of the skeletal structure given below (write methyl as Me and ethyl as Et). Make sure to keep the conformation as it is shown in the skeletal structure (i.e., do not rotate it). Note: Ph = phenyl substituent (Ph = C6H5). Note that a Ph substituent induces more steric interactions than a Me substituent. co )III II Ph 2 3 b. Fill in the missing substituents in the boxes provided in the energy diagram below (write methyl as Me and ethyl as Et). Circle the associated strain energy that leads Highest energy conformation Highest energy conformation Strain Angle or Steric Et Et Energy Et Et Et Et eclipsed anti or gauche eclipsed ant or gauche eclipsed anti or gauche eclipsed 0 60 120 240 300" 360 180 Dihedral angle Page 8/18