TITLE:
Synthesis and Molecular Structures of Two Novel π-Conjugation Extended Dithia[3.3]metacyclophanes
AUTHORS:
Tetsuji Moriguchi, Daisuke Yakeya, Venkataprasad Jalli, Akihiko Tsuge, Kenji Yoza
KEYWORDS:
Cyclophane, X-Ray Analysis, Suzuki Coupling, π-Conjugation
JOURNAL NAME:
Crystal Structure Theory and Applications,
Vol.6 No.1,
February
17,
2017
ABSTRACT: 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.