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Updated: Jun 1, 2026

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
Published on: October 24, 2017
5-Bromo-2-hy-droxy-benzaldehyde thio-semicarbazone
Abstract:
The mol-ecule of the title compound, C(8)H(8)BrN(3)OS, is close to being planar, with maximum deviations of -0.127 (3) and 0.135 (5) Å for the N atoms of the -NH- and NH(2)- groups, respectively. Intra-molecular N-H⋯N and O-H⋯N hydrogen bonds to the same acceptor N atom generate S(5) and S(6) ring motifs. In the crystal structure, mol-ecules are connected into [010] chains by pairs of N-H⋯S hydrogen bonds with R(2) (2)(8) graph-set motifs. The crystal used for data collection was found to be an inversion twin.
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