Deformation Electron-Density Distributions of Tetraazathiapentalenes with Hypervalent S-N Bonds |
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| Authors: | Fujiko Iwasaki Seui Kakuma Satoshi Yoshida Shin Murata Masanori Yasui |
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| Institution: | Department of Applied Physics and Chemistry , The University of Electro-Communications , Chofu-shi, Tokyo, 182, Japan |
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| Abstract: | Abstract The deformation electron-density distributions of 6a-thia-1,3,4,6-tetraazapentalene derivatives (I, II) and bis(phenylthio)dibenzothiophene (III) were investigated by the X-ray diffraction method. For I and II, a structure around the hypervalent S-N bonds is a trigonal bipyramid with equatorial sp2 hybrid of S-C bond and lone-pair electrons and apical polarized S-N bonds. In 111 lone-pair electron densities are observed perpendicular to the thiophene ring and the C-S-C sulfide planes. |
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