Chair Formations and Cyclohexane Conformational Analysis

exam 2, chem 233, WVU fall '26

You can draw wedges and dashes on a chair

false

In a ring flip, only [ ] and [ ] change

equatorial and axial orientation

In a ring flip, [ ] and [ ] stay the same

up and down orientation

A value: definition

relative energy of a substituent

A value: halides

.15 - .4

A value: OH

.87

A value: CH₃

1.7

A value: isopropyl

2.15

A value: tertbutyl

>4

Tertbutyl groups [ ] and will only be [ ]

lock rings, equatorial

Groups with larger A values prefer __ positions

equatorial

Ring to chair: step 1

number skeletal structure in a set way (ex. clockwise)

Ring to chair: step 2

draw chair, pick C1, label in the same direction

Skeletal: wedge up

chair: line up

Skeletal: dash down

chair: line down

Trans conformation: definition

isomer with identical groups on the same side of the molecule

Cis conformation: definition

isomer with identical groups on opposite sides of the molecule

Isomers: definition

things with the same parts

Conformers: definition

things with the same parts and connectivity but different rotations and relative energies

If you can name two molecules the same, they’re identical

true