Crystal Structures of 1,4-Bis[(dimethoxyphenyl)ethynyl]benzenes

Bibliographic Information

Other Title
  • 1,4-ビス[(ジメトキシフェニル)エチニル]ベンゼンの結晶構造

Description

The synthetic research of ethynylated aromatic compounds has attracted considerable attention because of interests in their molecular structures, optical properties, and molecular electronics. Among these ethynylated aromatic compounds, 1,4-bis(phenylethynyl)benzene derivatives have been extensively studied. These compounds have stiff, linear molecular structures and are used as building blocks in the applications such as liquid-crystalline materials and electron-conducting molecular wires. According to the X-ray crystallographic analyses of 1,4-bis(phenylethynyl)benzene, the molecules crystallize in two crystal forms with the P-1and Pbcn space groups. In both crystals, the molecules are linear and planar. In P-1, the molecules are aggregated by the face-to-edge interactions based on CH-pi contacts. In Pbcn, the molecules form pi-dimers that are aggregated by the face-to-face interactions based on pi-pi contacts and the face-to-edge interactions based on CH-pi contacts. We studied the molecular and crystal structure of 1,4-bis[(2,6-dimethoxyphenyl)ethynyl]benzene, which is a 1,4-bis(phenylethynyl)benzene derivative substituted by four methoxy groups at the terminal benzene rings. The methoxy groups fixed a pi-stacking geometry between the terminal benzene rings resulting in the formation of the zigzag molecular network. The introduction of methoxy groups provided a supramolecular architecture of 1,4-bis(phenylethynyl)benzene.

Journal

Details 詳細情報について

  • CRID
    1390282680533070336
  • NII Article ID
    130004645365
  • DOI
    10.11494/kisoyuki.2008.0.246.0
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

Report a problem

Back to top