AM_SO3_1
Formula: S O3
Name: SO3
Unit cell: 5.13 10.82 12.4 90.0 90.0 90.0 , V=688.28
Space group: P21NB (33)

Pascard R , Pascard-Billy C , Acta Crystallographica , 18 (1965) p.830-834, Structure precise de l anhydride sulfurique