AM_S3O9 Formula: S O3 Name: S3O9 Unit cell: 5.191 10.82 12.384 90.0 90.0 90.0 , V=695.57 Space group: P21NB (33)

McDonald W S , Cruickshank D W J , Acta Crystallographica , 22 (1967) p.48-51, A refinement of the structure of S3O9