Which one of the following molecules does NOT have a plane of symmetry?

Question

Vimal Swarnkar · Accepted Answer

(b) 3,4-Dichlorohexane (zigzag, both Cl wedged). (b) 3,4-dichlorohexane as drawn is (3S,4S) — a chiral (dl) form, so it has no plane of symmetry. (a) is the meso form, (c) trans-1,3-dichlorocyclobutane and (d) the trimethylcyclopropane have a mirror plane → (b).

Answer

(a) 3,4-Dichlorohexane (sawhorse form)

Answer

(c) 1,3-Dichlorocyclobutane (one Cl wedge, one dash)

Answer

(d) 1,2,3-Trimethylcyclopropane (one Me dash, two wedged)

Geo-Scientist Prelims 2020 Chemistry Q89: Which one of the following molecules does NOT have a plane of…

QuestionStereochemistry / symmetry elements