91Ó°ÊÓ

Stereochemistry determines the relative spatial arrangements of all the atoms in a chemical compound.

The relative spatial arrangements of atoms are represented by the wedge, dashed wedge, and plain lines structure of a molecule.

The bonds in the plane of the molecule are represented by a straight line.

The bonds above and below the plane of the molecule are represented by a solid and a dashed wedge, respectively

Hence, the reaction proceeds by the S_N1 mechanism. The products of the reaction are the enantiomers of hexan-3-ol.

Products of (a)b.localid="1648282800922" ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{CHDCI}$favors only S_N2 mechanism. Hence, the reaction proceeds via S_N2 the mechanism. The products of the reaction are shown below:

Products of (b)