Answer :
The meso isomer of 3,4-dibromohexane has the stereochemical configuration A) 3R, 4S or 3S, 4R.
This compound exhibits an internal plane of symmetry that characterizes meso compounds. Options 3S, 4S, and 3R, 4R are not meso configurations.
The meso isomer of 3,4-dibromohexane has the stereochemical configuration 3R, 4S. A meso compound is characterized by having multiple chiral centers but is achiral due to an internal plane of symmetry.
In the case of 3,4-dibromohexane, the configurations 3R, 4S and 3S, 4R would result in such a plane of symmetry making one of these pairs the correct configuration for the meso isomer.
To summarize, out of the given options, the correct stereo configurations for the meso isomer are:
- 3R, 4S
- 3S, 4R
Note that the options 3S, 4S and 3R, 4R are not meso because they do not share this internal symmetry feature.
Final answer:
The meso isomer of 3,4-dibromohexane has the 3R, 4S stereochemical configuration due to the molecule's symmetry.
Explanation:
The meso isomer of a molecule like 3,4-dibromohexane features symmetry, meaning it has identical (mirror-image) halves across an axis. In stereochemical terms, this translates to one bromine (Br) atom being in the R configuration while the other is in the S configuration or vice versa. Therefore, the correct stereochemical configuration for the meso isomer of 3,4-dibromohexane is A) 3R, 4S.
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