FunChem L13 Cycloalkanes

Torsional strain

The strain due to eclipsing of bonds on neighbouring atoms

Cyclokanes

Saturated hydrocarbons that have at least one ring of carbon atoms

Angle strain

The strain due to expansion or compression of bond angles

Steric strain

Strain due to repulsive interactions when atoms approach each other too closely

Cyclohexane puckered structure

Optimal bond angles and minimal torsional strain

Axial position

perpendicular to the ring

Equatorial position

In the rough plane of the ring

Ring flip of the chair conformation of cyclohexane

6 axial and 6 equatorial hydrogens in conformation
4 carbons in the same plane, one up and one down
They exchange position by a ring flip

Cis

Same side

Trans

Opposite

Chemical properties of alkanes

Extremely interactive
Main chemical reactions include oxidation and halogenation