Preparation, structure and properties of novel 1,3-dithiol-2-ylidene derivatives containing bis(ethynylpyridine) units |
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| Authors: | Tsutomu KumagaiMasaaki Tomura Jun-ichi NishidaYoshiro Yamashita |
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| Institution: | a Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan
b Institute for Molecular Science, Myodaiji, Okazaki 444-8585, Japan |
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| Abstract: | 1,3-Dithiol-2-ylidene derivatives containing bis(ethynylpyridine) units were synthesized using a Pd-catalyzed reaction of the corresponding dibromide. X-Ray crystal analysis revealed unique crystal structures depending on the aromatic groups. The absorption spectra and redox properties indicated intramolecular charge-transfer interactions between the 1,3-dithiole unit and the pyridyl parts. |
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| Keywords: | 1 3-dithioles pyridines ethynylethenes Sonogashira coupling π-conjugated system X-ray crystal structures |
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