The low temperature $(-98^{\circ}\mathrm{C})$ $^{19}\mathrm{F}$ NMR spectrum of $\mathrm{SF}_{4}$, shows doublet of triplets with the point group symmetry.
(a)$\mathrm{C}_{3v}$
(b)$\mathrm{C}_{4v}$
(c)$\mathrm{T}_{d}$
(d)$\mathrm{C}_{2v}$
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
At −98 °C SF₄ is a frozen see-saw (C₂v): two axial and two equatorial F, each pair a triplet — the observed pair of triplets.