Crystal Structure, Conformation and Vibrational Analysis of a Mannich Base: 2-[(phenylamino) methyl]-isoindole-1,3-dione
作者:S. Franklin、D. Tamilvendan、G. Venkatesa Prabhu、T. Balasubramanian
DOI:10.1007/s10870-011-0055-1
日期:2011.8
The crystal structure of 2-[(phenylamino) methyl]-isoindole-1,3-dione, C15H12N2O2, crystallizes in the triclinic space group Pī with cell parameters of a = 7.1176 (2) Å, b = 8.5533 (3) Å, c = 10.9163 (4) Å, α = 95.937 (2)°, β = 102.975 (2)°, γ = 108.474 (2)°, V = 603.18 (4) Å3 and Z = 2. This indole derivative is a Mannich base in which a methyl group bridges the molecules of phthalimide and aniline molecules. The dihedral angle between the phthalimide and aniline is 75.47 (3)°. The molecules of the title compound forms a centrosymmetric hydrogen-bonded dimer through a pair of N–H···O hydrogen bonds. C–H···π and an extensive π···π interactions, in addition, stabilize the molecular structure. The compound presented here is V-shaped, the angle at the methyl bridge [N–C–N] being 115.04 (12)°. Present study reports the conformation and hydrogen bonding interactions which play an important role in biological functions. Vibration analysis complement the structure analysed. The crystal structure of 2-[(phenylamino) methyl]-isoindole-1,3-dione is a Mannich base compound in which a phenylamine and phthalimide molecules are bridged by a methyl group.
2-[(苯基氨基)甲基]-异吲哚-1,3-二酮(C15H12N2O2)的水晶结构以三斜晶系Pī为空间群,晶胞参数为a=7.1176(2)Å、b=8.5533(3)Å、c=10.9163(4)Å、α=95.937(2)°、β=102.975(2)°、γ=108.474(2)°、V=603.18(4)Å3和Z=2。这种吲哚衍生物是一种曼尼希碱,其中甲基桥连了邻苯二甲酰亚胺分子和苯胺分子。邻苯二甲酰亚胺和苯胺之间的二面角为75.47(3)°。标题化合物的分子通过一对N-H·O氢键形成中心对称的氢键二聚体。此外,C-H·π和广泛的π·π相互作用稳定了分子结构。此处介绍的化合物呈V形,甲基桥[N-C-N]处的角度为115.04(12)°。本研究报告了构象和氢键相互作用,它们在生物功能中起着重要作用。振动