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• 作者：Christophe M. L. Vande Velde ; Li-Juan Chen ; Jan K. Baeke ; Maarten Moens ; Pieter Dieltiens ; Herman J. Geise ; Matthias Zeller ; Allen D. Hunter ; and Frank Blockhuys
• 刊名：Crystal Growth & Design
• 出版年：2004
• 出版时间：July 2004
• 年：2004
• 卷：4
• 期：4
• 页码：823 - 830
• 全文大小：166K
• 年卷期：v.4,no.4(July 2004)
• ISSN：1528-7505

文摘

The crystal structures of E,E-1,4-bis[2-(2,4,6-trimethoxyphenyl)ethenyl]-2,5-dimethoxybenzene (1),E,E-1,4-bis[2-(2,4,6-trimethoxyphenyl)ethenyl]-2,5-diisopropoxybenzene (2), E,E-1,4-bis[2-(2,4,6-trimethoxyphenyl)ethenyl]-2,5-dihexoxybenzene (3), and E,E-1,4-bis[2-(2,4,6-trimethoxyphenyl)ethenyl]-2,5-bis(2-phenylethoxy)benzene(4) are reported. A weak intramolecular hydrogen bond between protons on the olefinic link and the ortho-methoxygroups on the adjacent benzene rings is commented on. In general, however, the crystal packing for these structuresis primarily determined by weak -OCH₃- interactions. Their numbers change with the structure and length ofthe side chains and with the accommodation of the extended chains in the lattice. A discussion on the effects ofthese interactions on the possibility of lattice formation explains why these four compounds crystallize and severalsimilar ones with different alkoxy side chains do not.