What would be the enantiomers and diastereoisomers of C6H12?

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Answer 1 · 2016-05-06T00:05:42

There are nine stereoisomers of $"C"_6"H"_12$ .

An alkene would have the formula $"C"_6"H"_14$ , so the isomers must be alkenes or cycloalkanes.

Here are the possibilities.

( $R$ )- and ( $S$ )-3-Methylpent-1-ene

3MeP1

These are a pair of enantiomers.

( $1R, 2S$ )-, ( $1R, 2R$ )-, and ( $1S, 2S$ )-1,2-Dimethylcyclobutane

Me2C4

( $1R, 2S$ )-1,2-Dimethylcyclobutane is a meso compound, because it has an internal plane of symmetry.

( $1R, 2R$ )-, and ( $1S, 2S$ )-1,2-Dimethylcyclobutane are a pair of enantiomers.

Each is a diastereomer of the meso compound.

The four stereoisomers of 1-ethyl-2-methylcyclopropane

1Et2Me

$"A"$ and $"B"$ are a pair of enantiomers, as are $"C"$ and $"D"$ .

The diastereomeric pairs are $"A and C, A and D, B and C, B and D"$ .