CHAPTER 8: Conformations of acyclic and cyclic molecules

Enhanced diagrams for many of the structures / schemes / figures are given below:
 

Figure 8.1: Energy Profile for Rotation about the Carbon-Carbon Bond of Ethane.

 
8.1
8.2

Conformations of Propane

 
8.3
8.4

Figure 8.2: Energy Profile for Rotation about the Central Carbon-Carbon Bond of Butane.

 

Conformations of Pentane

 
8.9
8.10

Figure 8.3: A Graph of Strain against Ring Size for Cycloalkanes of Formula (CH2)n, n= 3-16

Structures 8.11-8.15

 
8.11
8.12
8.13
8.14
8.15 (one enantiomer)
8.15 (other enantiomer)

Structure 8.16

 
8.16

Structures 8.17 and 8.18

 
8.17
8.18

Structures 8.19 and 8.20

 
8.19
8.20



Figure 8.5: How to Draw the Chair Conformation of Cyclohexane.

Figure 8.6: The Two Chair Conformations of Methylcyclohexane 8.23.

 

Structure 8.24

 

Structures 8.25-8.31

 
8.25
8.26
8.27
8.28
8.29
8.30
8.31


 
8.32
8.33

Structures 8.34-8.36

 
8.34
8.35
8.36

Structures 8.38 and 8.39

 
8.38
8.39a
8.39b

Structures 8.42a,b

 
8.42a
8.42b

Structures 8.44-8.46

 
8.44
8.45
8.46
 

Structures 8.47-8.51

 
8.47
8.48
8.49a
8.51
                                                                                                                               

Structure 8.52

 
8.52

Figure 8.10: The a-Helix Conformation of a Protein.

 

Structures 8.54-8.56

 
8.54
8.55
8.56

Figure 8.13: The Double Helix Conformation of DNA.

 

Figure 8.14: X-Ray Analysis of Compound 8.62.

 
8.62

Structure 8.63

 
8.63a
8.63b
8.63c
8.63d

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