Cyclodecane, conformations table

Studies of cyclodecane derivatives by X-ray crystallographic methods have demonstrated that the boat-chair-boat conformation is adopted in the solid state. (Notice that boat is used here in a different sense than for cyclohexane.) As was indicated in Table 3.7 (p. 146), cyclodecane is significantly more strained than cyclohexane. Examination of the boat-chair-boat conformation reveals that the source of most of this strain is the close van der Waals contacts between two sets of three hydrogens on either side of the molecule. 

Some years ago, when PEF400 was new, it was applied to cyclodecane. Five conformations were selected. Three of them have been found in crystal structures Nos. 1, 2 and 4 in Table 10-3 No. 3... 

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