X-ray structure investigation of 1-acetoxy-1-cyano-2-naphthylethylene and 1,1-dicyano-2-naphthylethylene

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• 作者：V. N. Nesterov (1)
  L. N. Kuleshova (1)
  M. Yu. Antipin (1)
• 刊名：Crystallography Reports
• 出版时间：November 2001
• 出版年：2001
• 期刊代码：pc953_1063-7745
• 类别：ph
• 卷：46
• 期：6
• 页码：959-962
• 数据来源：sp

摘要

The crystal structures of 1-acetoxy-1-cyano-2-naphthylethylene (I) and 1,1-dicyano-2-naphthylethylene (II) are determined by X-ray structure analysis. Crystals I are monoclinic; at 25掳 C, the unit cell parameters are as follows: a = 17.308(6) Å, b = 4.507(1) Å, c = 17.845(5) Å, β = 107.90(2)掳, V = 1324.7(7) Å3, d _calcd = 1.260 g/cm3, Z = 4, and space group P2₁/n. Crystals II are monoclinic; at 25掳C, the unit cell parameters are a = 3.827(1) Å, b = 15.784(4) Å, c = 17.226(2) Å, β = 91.22(2)掳, V = 1040.3(4) Å3, d _calcd = 1.304 g/cm3, Z = 4, and space group P2₁/n. It is revealed that, in crystal structures of I and II, the molecular stacks characteristic of compounds of this series are formed through stacking contacts along the direction of the smallest lattice parameter.