3-Phenylsulfanyl-4-phenylsulfonyl-1,2,5-oxadiazole 2-oxide

In the title compound, C(14)H(10)N(2)O(4)S(2), the furoxan heterocyclic
ring and the two S atoms are almost co-planar, with a mean deviation of
0.036 angstrom. The bond lengths in the pentagonal ring show electron
delocalization and the furoxan N-O bond length is quite short [1.211
(3) angstrom]. The dihedral angles between the central ring and pendant
phenyl rings are 78.05 (14) and 84.28 (2)degrees.