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在甲醇中通过 N-氧化吡啶 -2 -甲醛与苯肼反应得 Schiff碱 N-氧化吡啶 -2 -甲醛缩苯肼 ,并用单晶 X射线衍射测定其结构 .Schiff碱分子式为 C1 2 H1 3N3O2 ,相对分子质量 2 3 1 .2 5 .晶体属正交晶系 ,Pbca空间群 ,晶胞参数 :a=1 .1 1 3 2 7(1 6) nm,b=0 .81 40 6(1 2 ) nm,c=2 .5 782 (4 ) nm,V=2 .3 3 5 (6) nm3,Z=8,Dc=1 .3 1 5 g·cm- 3,μ=0 .0 92 mm- 1 ,F(0 0 0 ) =976,结构偏离因子 R1 =0 .0 3 89,w R2 =0 .1 0 3 5 ,最佳吻合因子 S=0 .661 .化合物分子通过氢键 (O(1 )… O(1 W) 0 .2 71 9nm,O(1 )… O(1 Wa) 0 .2 75 1 nm)形成一维链状结构 .
The structure of Schiff base N - pyridine - 2 - carboxaldehyde phenylhydrazine was synthesized by the reaction of N - pyridine - 2 - carbaldehyde and phenylhydrazine in methanol, and its structure was determined by single crystal X - ray diffraction.The molecular formula of Schiff base is C1 2 H1 3N3O2, Relative molecular mass 2 3 1 .2 5. The crystal is orthorhombic, Pbca space group, unit cell parameters: a = 1 1 3 2 7 (1 6) nm, b = 0 .81 40 6 (1 2 ) nm, c = 2.5782 (4) nm, V = 2.335 (6) nm3, Z = 8, Dc = 1.31 5 g · cm- 3, μ = 0.092 mm - 1, F (0 0 0) = 976, the structural deviation factor R1 = 0 .0 3 89, w R2 = 0 .1 0 3 5, the best anastomosis factor S = 0.661. (1) ... O (1 W) 0 .2 71 9 nm, O (1) ... O (1 Wa) 0 .2 75 1 nm) forms a one-dimensional chain structure.