7
SF6  has Oh symmetry
16  0.0   0.0   0.0
9   1.5   0.0   0.0
9  -1.5   0.0   0.0
9   0.0   1.5   0.0
9   0.0  -1.5   0.0
9   0.0   0.0   1.5
9   0.0   0.0  -1.5
