X-ray crystal structure of N'-[(1E)-1-(2,4-dihydroxyphenyl)-ethylidene]pyridine-4-carbohydrazide

Schiff’s base of isonicotinyl hydrazide with 2’,4’-dihydroxy acetophenone (INH-RA) has been designed and synthesized as a part of library enumeration targeting the NS2B-NS3 protease of Dengue virus. Slow evaporation from methanol results in the formation of monoclinic crystals C2/c space group with eight molecules in the unit cell (a=20.0165(3) Å, b=7.7594(10) Å, c=19.4809(3) Å, α=90 °, β=111.368(1) °, γ=90 ° and Z=8).Three dimensional X-ray crystallographic structure of the compound has been determined and refined using SHELXS-97 and SHELXL-2014, respectively to a final R-value of 4.64%