摘要
合成了水杨醛-3,4,5-三甲氧基苯甲酰腙(1)、5-溴-水杨醛-3,4,5-三甲氧基苯甲酰腙(2)和4-氯苯甲醛-3,4,5-三甲氧基苯甲酰腙(3),通过FT-IR、1HNMR等进行了结构表征。用X射线单晶衍射测定了3个化合物的晶体结构。结果表明化合物1和2都属于斜方晶系,P2(1)/c空间群,化合物3属于三斜晶系,P-1空间群,晶体通过分子间氢键作用形成一维的无限链状结构。它们的晶体学参数分别为:1.a=1.5348(12)nm,b=1.3330(11)nm,c=0.8299(7)nm,α=90.00°,β=99.854(16)°,γ=90.00°,V=1.6730(2)nm3,Z=4,Dc=1.312g/cm3,F(000)=696,R=0.1016,wR=0.1936;2.a=1.14157(19)nm,b=1.6279(3)nm,c=0.9738(16)nm,α=90.00°,β=100.210(16)°,γ=90.00°,V=1.7144(4)nm3,Z=4,Dc=1.586g/cm3,F(000)=832,R=0.0669,wR=0.0969;3.a=0.5119(2)nm,b=0.8210(4)nm,c=2.0276(9)nm,α=101.055(7)°,β=92.362(7)°,γ=101.459(7)°,V=0.8169(7)nm3,Z=2,Dc=1.418g/cm3,F(000)=364,R=0.0516,wR=0.1276。
Three titled compounds namely ( E ) -N′- ( 2 -hydroxybenzylidene) -3,4,5-trimethoxybenzohydrazide ( 1 ), (E) -N′- ( 5- bromo-2-hydroxybenzylidene) -3,4,5-trimethoxybenzohydrazide (2) and (E) -N′-(4-cholobenzylidene) -3,4,5- trimethoxybenzo- hydrazide (3) have been synthesized, and characterized by IR and ^1H NMR. Their crystalline and molecular structures have been determined by single crystal X-ray diffraction. Both compounds 1 and 2 belong to monoclinic system, space group P2( 1 )/c, with a = 1. 534 8 (12) nm, b = 1. 333 0 ( 11 ) nm, c = 0.829 9 (7) nm, α = 90.00 °,β = 99. 854 (16) °, γ = 90.00 °, V = 1. 673 0 (2)nm^3, Z=4, Dc=1.312g/cm^3, F(000) =696, R=0.1016, wR=0.1936, for compound 1; a=1.14157(19)nm, b= 1.6279(3)nm, c=0.9738(16)nm, α=90.00°, β=100.210(16)°, γ=90.00°, V=1.7144(4)nm^3, Z=4, Dc = 1. 586 g/cm^3 , F(000) = 832, R = 0.066 9, wR = 0.096 9 for compound 2. Compound 3 belongs to trielinie system, space group P-1, with a =0.511 9(2)nm, b =0. 821 0(4) nm, c = 2.027 6(9) nm, α = 101. 055 (7)°, β =92. 362(7)°, γ= 101. 459 (7) °, V = 0.816 9 (7) nm^3, Z = 2, Dc = 1.418 g/cm^3, F(000) = 364, R = 0.051 6, wR = 0. 127 6. In the crystals there exist several intermoleeular hydrogen bonds, through which one-dimensional infinite-chain structures were formed.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2009年第1期23-28,共6页
Chemistry and Industry of Forest Products
基金
国家自然科学基金(30571466)
江苏省自然科学基金(2006011)
关键词
水杨醛-3
4
5-三甲氧基苯甲酰腙
5-溴-水杨醛-3
4
5-三甲氧基苯甲酰腙
4-氯苯甲醛-3
4
5-三甲氧基苯甲酰腙
晶体结构
(E) -N′- ( 2-hydroxybenzylidene ) -3,4,5-trimethoxybenzohydrazide
(E) -N′- ( 5-bromo-2-hydroxy-benzylidene ) -3, 4,5-trimethoxybenzohydrazide
(E) -N′- (4 -cholobenzylidene) -3,4,5-trimethoxybenzohydrazide
crystalline structure