SYNTHESIS AND CRYSTAL STRUCTURE OF A SCHIFF BASE: 2-CHLORO-4-NITRO-N-(5-BROMOSALICYLIDENE) ANILINE (C_(13)H_8BrClN_2O_3)

<正> The title compound 2-chloro-4-nitro-N-(5-bromosalicylidene) aniline is preparedby condensation of 5-bromosalicylidehyde and 2-chloro-4-nitro-aniline. C_(13)H_8BrClN_2O_3, M_r=355.58, monoclinic space group P 2_1/n, a=7.4927 (7), b=16.389(5), c=11.013(5), β=98.2(6)°, V=1338.4, Z=4, D_c=1.764g.cm~(-3), MoK_a(λ=0.71073),μ=34. 569cm~(-1), F.(000)=704, room temperature,final R=0. 053, R_w=0. 057 for 1453 reflections with I≥3σ(I). A total of 2948 in-

SYNTHESIS AND CRYSTAL STRUCTURE OF A SCHIFF BASE: 2-CHLORO-4-NITRO-N-(5-BROMOSALICYLIDENE) ANILINE (C_(13)H_8BrClN_2O_3)