Draw a Newman projection of the synclinal (or gauche) conformation of 1-iodo-2- nitroethane (ICH2CH2NO2)

5. Assume that the types of strain in the rotation about the C1-C2 bond in 1,2-dibromopropane have the following values. •Torsional strain = 20 kJ/mol •Steric strain between two Br substituents gauche = 13 kJ/mol •Steric strain between two Br substituents eclipsed = 16 kJ/mol •Steric strain between Br and CH3 substituents gauche = 8 kJ/mol •Steric strain between Br and CH3 substituents eclipsed (a) Perform a conformational analysis about the C1-C2 bond, analogous to the diagram in Figures 4-4 and 4-7 (Karty). Draw a full rotational energy profile (add E values in kJ/mol on y-axis) drawing each eclipsed and staggered conformation as Newmann projections i.e. 60° rotations for complete rotation about the C1-C2 bond. = 10 kJ/mol. E (kJ/mol) 0° 360 °

Subject- chemistry

Draw the Newman projection of the cyclohexane looking along the C1- C2 and C5 – C4 bonds and methylcyclohexane looking along the C1– C2 and C5 – C4 bonds.