Synthesis, Characterization and Crystal Structures of 3-Hydroxy-N′-[methyl(2-pyridyl)methylene]-2-naphthohydrazide monohydrate and 3-Hydroxy-N′-(3,5-dibromo-2-hydroxybenzylidene)-2-naphthohydrazide dimethylformamide solvate
作者:Guo-Ping Cheng、Ling-Wei Xue、Wei-Chun Yang
DOI:10.1007/s10870-012-0297-6
日期:2012.7
Two hydrazone compounds, 3-hydroxy-N′-[methyl(2-pyridyl)methylene]-2-naphthohydrazide monohydrate (1), and 3-hydroxy-N′-(3,5-dibromo-2-hydroxybenzylidene)-2-naphthohydrazide dimethylformamide solvate (2), have been prepared and characterized by elemental analysis, IR spectra, 1HNMR spectra, and X-ray single crystal structural determination. Compound (1) crystallizes in the monoclinic space group C2/c with unit cell dimensions a = 11.072(2) Å, b = 12.017(2) Å, c = 23.753(3) Å, β = 95.710(2)°, V = 3144.7(9) Ǻ3, Z = 8, R 1 = 0.0780, and wR 2 = 0.1465. Compound (2) crystallizes in the triclinic space group P-1 with unit cell dimensions a = 7.601(2) Å, b = 16.522(4) Å, c = 17.048(3) Å, α = 92.516(11)°, β = 96.726(12)°, γ = 94.117(12)°, V = 2117.8(8) Ǻ3, Z = 4, R 1 = 0.0490, and wR 2 = 0.1012. The hydrazone molecules in the compounds adopt trans configurations about the C=N double bonds. The crystal structures of the compounds are stabilized by intermolecular hydrogen bonds and π···π stacking interactions. Two hydrazone compounds, 3-hydroxy-N′-[methyl(2-pyridyl)methylene]-2-naphthohydrazide monohydrate and 3-hydroxy-N′-(3,5-dibromo-2-hydroxybenzylidene)-2-naphthohydrazide dimethylformamide solvate, are presented.
制备了两种腙类化合物:3-羟基-N′-[甲基(2-吡啶基)亚甲基]-2-萘甲酰肼一水合物(1)和 3-羟基-N′-(3,5-二溴-2-羟基亚苄基)-2-萘甲酰肼二甲基甲酰胺溶液(2)、并通过元素分析、红外光谱、1HNMR 光谱和 X 射线单晶结构测定进行了表征。化合物 (1) 在单斜空间群 C2/c 中结晶,单胞尺寸 a = 11.072(2) Å, b = 12.017(2) Å, c = 23.753(3) 埃,β = 95.710(2)°,V = 3144.7(9) Ǻ3,Z = 8,R 1 = 0.0780,wR 2 = 0.1465。化合物 (2) 在三菱空间群 P-1 中结晶,单胞尺寸 a = 7.601(2) Å, b = 16.522(4) Å, c = 17.048(3) Å, α = 92.516(11)°,β = 96.726(12)°,γ = 94.117(12)°,V = 2117.8(8) Ǻ3,Z = 4,R 1 = 0.0490,wR 2 = 0.1012。化合物中的腙分子在 C=N 双键上采用反式构型。这些化合物的晶体结构通过分子间氢键和π---π堆叠相互作用而得到稳定。介绍了两种腙化合物,即 3-羟基-N′-[甲基(2-吡啶基)亚甲基]-2-萘甲酰肼一水合物和 3-羟基-N′-(3,5-二溴-2-羟基亚苄基)-2-萘甲酰肼二甲基甲酰胺溶液。