Polymorphism and design of noncentrosymmetric crystals of 4-hydroxybenzaldehyde-4-nitrophenylhydrazone and N鈥?(2-phenyl-1H-indole-3-aldehyde)-4-nitrophenylhydrazone
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- 作者：L. N. Kuleshova (1) lukul@xrlab.ineos.ac.ru
M. Yu. Antipin (1)
V. N. Khrustalev (1)
D. V. Gusev (1)
G. V. Grintselev-Knyazev (1)
E. S. Bobrikova (1) - 刊名：Crystallography Reports
- 出版时间：July 2003
- 出版年：2003
- 期刊代码：pc953_1063-7745
- 类别：ph
- 卷：48
- 期：4
- 页码：594-601
- 数据来源：sp
摘要
The products of crystallization of 4-hydroxybenzaldehyde-4-nitrophenylhydrazone (I) and N′-(2-phenyl-1H-indole-3-aldehyde)-4-nitrophenylhydrazone (II) from different solvents are studied by X-ray diffraction with the aim of examining the polymorphism of hydrazone derivatives. The structural features of the crystals prepared are analyzed. It is shown that, in the case when molecules of organic compounds with a high molecular hyperpolarizability are capable of forming stable acentric supramolecular associates in the crystal, knowledge of their polymorphism offers strong possibilities for designing the noncentrosymmetric crystal structure necessary for a manifestation of the nonlinear optical activity.