# Why are the bond angles of "SF"_4 less than predicted by VSEPR theory for a trigonal bipyramidal geometry?

The $\text{F"-"S"-"F}$ bond angle for the axial fluorines decreases by $\boldsymbol{{6.9}^{\circ}}$, and the $\text{F"-"S"-"F}$ bond angle for the equatorial fluorines decreases by $\boldsymbol{{18.4}^{\circ}}$ from the ideal bond angles.
There is also only one lone pair, so no counteracting lone pair decreases the influence of the other (unlike in water, which has an $\text{H"-"O"-"H}$ bond angle only ${5}^{\circ}$ smaller).