Crystal Structure of N'-(2-hydroxy-3-methoxy benzylidene)-4-nitro benzenesulfonylhydrazide and 1,2-bis(2-hydroxy-3-methoxy-benzylidenehydrazine) as a co-crystalline compound

The reaction of 2-hydroxy-3-methoxybenzaldehyde with 4-nitrosulfonylhydrazide under refluxing led to co-crystalline compound contains N'-(2-hydroxy-3-methoxy benzylidene)-4-nitro benzenesulfonylhydrazide (a sulfonamide-Schiff base compound) and 1,2-bis (2-hydroxy-3-methoxy-benzylidenehydrazine) (I). A medium strong hydrogen bonds in 1 links the oxygen atoms of one molecule of 1,2-bis(2-hydroxy-3-methoxy-benzylidenehydrazine) to the NH group of the N'-(2-hydroxy-3-methoxy benzylidene)-4-nitrobenzenesulfonylhydrazide and is responsible for establishing of co-crystals. Compound 1 was characterized by NMR and IR spectroscopy, elemental analysis and single crystal X-ray diffraction method. Crystallographic data for 1 was collected at 95 K. The synthesized compound has been crystallized in monoclinic system with P21/n space group and a = 6.6771(2) Å, b = 19.2072(6) Å, c = 17.3980(1) Å, β = 95.56(3)º cell parameters. The final R value is 0.037 for 07 independent reflections.