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Synthesis and Characterization of Two Different 1,3-Dithiole-2-thiones as the Precursors of TTF Donor Molecule
Synthesis and Characterization of Two Different 1,3-Dithiole-2-thiones as the Precursors of TTF Donor Molecule
Journal of the Korean Chemical Society. 2000. Dec, 44(6): 513-517
  • Published : December 00, 2000
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Kim, Young-Youn
Lee, Ha-Jin
Namgoong, Sung Keon
Hong, Jong-Ki
Noh, Dong-Youn

Abstract
As a precursor of tetrathiafulvalene (TTF) derivative, 5,6-dimethyl-1,3-dithiolo[4,5-b][1,4]dithiin-2-thione (compound 3) was synthesized by the unusual Lawesson's reaction. Depending upon the substituents such as dimethyl and diphenyl groups, two different products containing 1,4-dithiin and thiophene moieties, respectively, were obtained and characterized by $^{13}C$ NMR and high-resolution electron impact (HREI) mass spectroscopy. The formation of 3 was further characterized by X-ray structure analysis. Crystallographic data for 3: triclinic, space group P1, a=4.145(2)$\AA$, b=10.600(2)$\AA$, c=12.279(2)$\AA$, $\alpha$=71.440(10)$^{\circ}$, $\beta$=84.30(2)$^{\circ}$, $\gamma$=87.31(2)$^{\circ}$, Z=2 and R(wR$_2$)=0.0559(0.1416). The formation mechanism of two products was suggested and compared each other.