Author(s)

Tetsuji Moriguchi^1*, Daisuke Yakeya¹, Venkataprasad Jalli¹, Akihiko Tsuge¹, Kenji Yoza²

¹Department of Applied Chemistry, Faculty of Engineering, Kyushu Institute of Technology, Kitakyushu, Japan.
²Bruker AXS, Yokohama, Japan.

Two novel dithia[3.3]metacyclophanes substituted with ethynyl groups were synthesized as small-sized metacyclophanes from the corresponding brominated dithia-metacyclophanes via C-C bond formation reaction. These compounds were characterized by using ¹H NMR, mass spectrometry and elemental analyses. The exact structures were determined by using X-ray diffraction analyses. X-ray diffraction analysis results revealed that these compounds have anti conformations because of existence of intermolecular π-π interaction and some short contacts in the crystal. The long wavelength fluorescence was observed for one of the compound having a pyrene moiety in solid state because of the existence of the intermolecular π-π interaction between two pyrene units.

Cyclophane, X-Ray Analysis, Suzuki Coupling, π-Conjugation

Moriguchi, T. , Yakeya, D. , Jalli, V. , Tsuge, A. and Yoza, K. (2017) Synthesis and Molecular Structures of Two Novel π-Conjugation Extended Dithia[3.3]metacyclophanes. Crystal Structure Theory and Applications, 6, 1-10. doi: 10.4236/csta.2017.61001.