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Updated: Jun 5, 2026

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
Published on: October 24, 2017
1-Methyl-1H-2,1-benzothia-zin-4(3H)-one 2,2-dioxide
Abstract:
In the crystal structure of the title compound, C(9)H(9)NO(3)S, there is distorted tetra-hedral geometry around the S atom. The sulfonyl group is almost normal to the benzene ring, while the carbonyl O atom and methyl C atom are on opposite sides of this ring. The heterocyclic ring adopts a half-boat conformation with the S atom out of the plane. The mol-ecules are dimerized by hydrogen bonding involving the benzene ring and the sulfonyl group. These dimers are linked to each other in the same way. There is an intra-molecular hydrogen bond between a methyl C-H group and a sulfonyl O atom, and a π-π inter-action between the aromatic rings of two dimers at a centroid-to-centroid distance of 3.6373 (13) Å.
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