希夫碱N,N′-双水杨醛缩连氮的合成与晶体结构研究

Synthesis and Crystal Structure of Salicylaldehyde Azine

由水杨醛与水合肼反应生成希夫碱N ,N′ 双水杨醛缩连氮 ,并用溶液法生长其单晶。X 射线单晶结构分析表明 ,此晶体属于单斜晶系 ,P2 ( 1) /n空间群 ,晶胞参数为 :a =8.4 97( 4 ) ,b =6 .2 90 ( 3) ,c =11.789( 5 ) ,β=10 7.874 ( 7)° ,V =5 99.6 ( 4 ) 3 ,Z =2 ,Dc =1.331g·cm-3 ,F ( 0 0 0 ) =2 5 2 ,结构偏离因子R =0 .0 4 6 9,wR2 =0 .110 8。晶体中一个分子羟基上的氧原子与另一个分子中 -CH =N -上的氢原子之间形成分子间氢键 (O┄H -C)。

Salicylaldehyde azine was synthesized by the reaction of salicylaldehyde with hydrazine hydrate and its crystal structure was determined by single-crystal X-ray diffraction method. The crystal belongs to the monoclinic system, space group P2(1)/n, with cell parameters: a=8.497(4) ,b=6.290(3) ,c=11.789(5) ,β=107.874(7)°,V=599.6(4)  3,Z=2,Dc=1.331g·cm -3 ,F(000)=252,the final R is 0.0469 for 1223 observed reflections, wR 2=0.1108. The intermolecular hydrogen bonds (O┄H-C) were formed between the oxygen atom of the hydroxyl from one molecule and the hydrogen atom of -CH = N- from another.