Crystal structure of N’-(3-bromo-2-hydroxybenzylidene)-4-methylbenzohydrazide methanol solvate, C16H17BrN2O3

Abstract

C 16 H 17 BrN 2 O 3 ,t riclinic, P1 (no. 2), a =7 .338(2) Å, b =9 .210(2) Å,c =1 2.718(2) Å,a =9 7.981(2)°, Source of materialThetitle compound was synthesized by the reaction of 3-bromo-2-hydroxybenzaldehyde (1 mmol, 0.20 g) with 4-methylbenzohydrazide (1 mmol, 0.15 g) in absolute methanol (30 ml)a t ambient condition. Colourless needle-shaped single crystals were obtained by slow evaporation of the solution at room temperature afterseveral days. Experimental detailsTheamide Hatomwas locatedinadifferencemap andwas refined isotropically, with N-H =0.90(1) Å. Theremaining Hatomswere positioned geometrically and allowed to ride on their parent atoms, with C-H =0.93 Åfor aromatic and CH and 0.96 Å for CH 3 atoms, and with O-H =0.82 Å. The U iso values were constrained to be 1.5U eq of the carrier atom for methyl and hydroxyl Hatoms and 1.2U eq for the remaining Hatoms. Arotating group model was used for the methyl groups.