Riyadh Sayed, Hughes David L, Said Musa A
Chemistry Department, Taibah University, PO Box 30002, Code 14177, Al-Madinah Al-Munawarah, Kingdom of Saudi Arabia.
School of Chemistry, University of East Anglia, Norwich NR4 7TJ, UK.
Acta Crystallogr E Crystallogr Commun. 2017 Aug 1;73(Pt 9):1271-1274. doi: 10.1107/S2056989017010830. eCollection 2017 Sep 1.
The title compound, [(1-{4-[2-(2,4-di-hydroxy-phen-yl)diazen-1-yl]phen-yl}ethyl-idene)amino]-thio-urea, 1,1,2,2-tetra-chloro-ethane monosolvate, CHNOS·CHCl, was prepared from 4-(4-acetyl-phenyl-diazendi-yl)resorcinol and thio-semicarbazide and recrystallized from mixed solvents of tetra-chloro-ethane and -hexane. H NMR and X-ray diffraction data are in support of the thione tautomeric form. The X-ray analysis shows the mol-ecule crystallizes as a zwitterion, with proton transfer from the nominal phenol to the azide group; the N-N bond length is 1.291 (5) Å, and an intra-molecular N-H⋯O hydrogen bond is formed. In the crystal, N-H⋯O, N-H⋯N and O-H⋯S hydrogen bonds connect the mol-ecules into a three-dimensional network. The tetra-chloro-ethane solvent mol-ecules are linked to this network through weak C-H⋯O linkages.
标题化合物，[(1-{4-[2-(2,4-二羟基苯基)重氮-1-基]苯基}亚乙基)氨基]硫脲，1,1,2,2-四氯乙烷单溶剂合物，CHNOS·CHCl，由4-(4-乙酰基苯基重氮二基)间苯二酚和硫代氨基脲制备，并从四氯乙烷和己烷的混合溶剂中重结晶。氢核磁共振谱和X射线衍射数据支持硫酮互变异构形式。X射线分析表明该分子以两性离子形式结晶，质子从标称的酚转移到叠氮基团；N-N键长为1.291 (5) Å，并形成了分子内N-H⋯O氢键。在晶体中，N-H⋯O、N-H⋯N和O-H⋯S氢键将分子连接成三维网络。四氯乙烷溶剂分子通过弱C-H⋯O键与该网络相连。
