1
answer
0
watching
3,983
views
11 Nov 2019
(a) For the eclipsed conformation of the generic molecule CH3-CX2-CHY2 provided in the sawhorse representation below, draw the corresponding Newman projection obtained by looking down the C-C bond as denoted by the arrow: 2 Dihedral (or torsion) angles are defined by four contiguously bonded atoms, such as the single hydrogen and three carbon atoms numbered in the molecule above. value of this H3C-C-C-H dihedral angle for the eclipsed conformation. angle is approximately 60° ('gauche'). Draw such a 'gauche' conformation of the (b) Using your Newman projection from part (a) to assist you, estimate the approximate (c) Consider a conformation of the molecule above where the H3C-C-C-H dihedral CH3-CX2-CHY2 molecule in both the sawhorse representation and the Newman projection. (d) Consider the conformation of the molecule above where the H3C-C-C-H dihedral angle is 180° ('anti'). Draw such an 'anti' conformation of the CH3-CX2-CHY2 molecule in both sawhorse representation and Newman projection. Draw the structures of (Z)-1,2-diisopropylethene, (E)-1,2-diisopropylethene and 1,1-diisopropvlethene. methyl group is in an equatorial position. methyl group is axially displaced (a) Draw the structure of the chair conformation of methylcyclohexane in which the (b) Draw the structure of the chair conformation of methylcyclohexane in which the (c) Identify the two H-CH3 1,3-diaxial steric interactions.
(a) For the eclipsed conformation of the generic molecule CH3-CX2-CHY2 provided in the sawhorse representation below, draw the corresponding Newman projection obtained by looking down the C-C bond as denoted by the arrow: 2 Dihedral (or torsion) angles are defined by four contiguously bonded atoms, such as the single hydrogen and three carbon atoms numbered in the molecule above. value of this H3C-C-C-H dihedral angle for the eclipsed conformation. angle is approximately 60° ('gauche'). Draw such a 'gauche' conformation of the (b) Using your Newman projection from part (a) to assist you, estimate the approximate (c) Consider a conformation of the molecule above where the H3C-C-C-H dihedral CH3-CX2-CHY2 molecule in both the sawhorse representation and the Newman projection. (d) Consider the conformation of the molecule above where the H3C-C-C-H dihedral angle is 180° ('anti'). Draw such an 'anti' conformation of the CH3-CX2-CHY2 molecule in both sawhorse representation and Newman projection. Draw the structures of (Z)-1,2-diisopropylethene, (E)-1,2-diisopropylethene and 1,1-diisopropvlethene. methyl group is in an equatorial position. methyl group is axially displaced (a) Draw the structure of the chair conformation of methylcyclohexane in which the (b) Draw the structure of the chair conformation of methylcyclohexane in which the (c) Identify the two H-CH3 1,3-diaxial steric interactions.
Liked by lolswag1211
Beverley SmithLv2
23 Jun 2019