conformers of cyclopentane (chair forms)

Question 1

planar conformation of cyclopentane has little angle strain, but considerable torsional strain due to

Answer 1

eclipsing C-H bonds

Question 2

The envelope and half-chair conformers involve less

Answer 2

torsional strain and are of similar energy

Question 3

Equilibration between envelope and half-chair conformers is

Answer 3

rapid

Question 4

To achieve bond angles of 109.5º and minimize torsional
strain, cyclohexane adopts a_____ conformation

Answer 4

chair

Question 5

In the chair conformation, all adjacent C–H bonds are

Answer 5

staggard

Question 6

To draw a chair, start with

Answer 6

two parallel lines slanted to the right or left

Question 7

The boat conformer is a

Answer 7

high-energy
structure containing eclipsing C–H bonds

Question 8

The skew-boat relieves

Answer 8

some of the
torsional strain in the boat
* Both are considerably high

Question 9

The hydrogen in cyclohexane chairs are

Answer 9

substituents) in a cyclohexane chair
can be divided into two groups