Synthesis and crystal structure of (E)-2-({2-[aza-niumylidene(methylsultanyl)methyl]hydrazinyl-idene}methl)benzene-1,4-diol hydrogen suitate

Oussama Nehar (1) , Samira Louhibi (1) , Thierry Roisnel (2)

1 Université Aboubekr Belkaid - University of Belkaïd Abou Bekr [Tlemcen]
2 ISCR - Institut des Sciences Chimiques de Rennes

The title mol-ecular salt, CHNOS·HSO, was obtained through the protonation of the azomethine N atom in a sulfuric acid medium. The crystal com-prises two entities, a thio-semicarbazide cation and a hydrogen sulfate anion. The cation is essentially planar and is further stabilized by a strong intra-molecular O-H⋯N hydrogen bond. In the crystal, a three-dimensional network is established through O-H⋯O and N-H⋯O hydrogen bonds. A weak intermolecular C-H⋯O hydrogen bond is also observed. The hydrogen sulfate anion exhibits disorder over two sets of sites and was modelled with refined occupancies of 0.501 (6) and 0.499 (6).

Keywords: thiosemicarbazone; crystal structure; hydrogen bonding; organic salt

Domains: Chemical Sciences

Oussama Nehar, Samira Louhibi, Thierry Roisnel. Synthesis and crystal structure of (E)-2-({2-[aza-niumylidene(methylsultanyl)methyl]hydrazinyl-idene}methl)benzene-1,4-diol hydrogen suitate. Acta crystallographica Section E : Crystallographic communications [2015-..], 2019, 75 (11), pp.1738-+. ⟨10.1107/S2056989019014233⟩. ⟨hal-02391899⟩