頁籤選單縮合
題名 | An Interesting Isomerization: Synthesis of Mesoionic 5-Arylamino-1,3,4-Thiadiazolium-2-Thiolates by Using ω-Bromo-ω-(1H-1,2,4-Triazol-1-yl)acetophenone as Catalyst= |
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作者 | 褚長虎; 惠新平; 許鵬飛; 張自義; 李之春; 廖仁安; Chu, Chang-hu; Hui, Xin-ping; Xu, Peng-fei; Zhang, Zi-yi; Li, Zhi-chun; Liao, Ren-an; |
期刊 | Journal of the Chinese Chemical Society |
出版日期 | 20000800 |
卷期 | 47:4B 民89.08 |
頁次 | 頁943-946 |
分類號 | 348.3 |
語文 | eng |
關鍵詞 | Isomerization; 1H-1,2,4-Triazole; 1,3,4-Thiadiazolium-2-thiolate; X-Ray photoelectron spectroscopy; |
英文摘要 | Mesoionic 5-arylamino-1,3,4-thiadiazolium-2-thiolates 7a-f were prepared by the isomerization of 5-arylamino-1,3,4-thiadiazol-2-thiones 5a-f by using ��-bromo-��-(1H-1,2,4-triazol-1-yl)acetophenone 6 as catalyst. All the structures of mesoionic synthesized were confirmed by elemental analyses, 1H NMR, IR and MS spectral data. We have also determined the x-ray photoelectron spectroscopy (XPS) of the mesoionic and their precursors. A comparison of XPS spectra between the mesoionic and their precursors showed that the charge separation in mesoionic is distinctly larger than in their precursors. |
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