Half Chair Boat
This video discusses the relative stability of the chair conformations of cyclohexane such as the chair conformation, twist boat conformation, boat conformation, and the half chair conformation.. Drawing boat and chair conformations requires identifying the c-c bonds and the bonded substituents. the chair view is the more stable cyclohexane and the boat view is less stable, but both require 3-d representations of bent bonding patterns.. Molecular dynamics animation (unshaded graphics with color coded axial and equatorial hydrogens) showing the interconversion of the two cyclohexane chair conformations via intervening half-chair.
There are actually, there are other conformations of cyclohexane, so the boat conformation can actually twist a little bit to give you twist boat. there's also half chair, but we're not really too concerned with those other conformations and actually we're gonna focus on the chair conformation in future videos because cyclohexane spends most of. Because of the hydroxyl groups and oxygen atoms, there are 38 distinct conformations (2 chairs, 6 boats, 6 skew-boats, 12 half-chairs, and 12 envelopes). from wikipedia : obviously, in less-substituted cyclohexane, there are fewer unique shapes, but it helps to see the different ring-puckering or pseudo-rotation shapes.. E) half-chair < twist < boat < chair chair < twist < boat < half-chair the energy difference between the axial and equatorial conformers of methylcyclohexane is:.
