Preparation and Properties of 2,2-Bissilyl-1,3-dithia-2-silacyclopent-4-enes and Related Compounds
作者:Shinobu Tsutsui、Masae Takahashi、Kenkichi Sakamoto
DOI:10.1246/cl.2000.1376
日期:2000.12
Several 1,3-dithia-2-silacyclopent-4-ene (dithiasilole) derivatives were prepared by the reactions of cis-NaS–HC=CH–Sna with the corresponding dichlorosilanes. The compounds formed charge-transfer (CT) complexes with tetracyanoethylene in CH2Cl2. The UV–vis spectra of the CT complexes indicated that the ionization potential of 2,2-bis(trimethylsilyl)dithiasilole was smaller than that of 2,2-dimethyldithiasilole
通过顺式-NaS-HC=CH-Sna 与相应的二氯硅烷反应制备了几种 1,3-dithia-2-silacyclopent-4-ene(dithiasilole)衍生物。这些化合物在 CH2Cl2 中与四氰基乙烯形成电荷转移 (CT) 络合物。CT配合物的紫外-可见光谱表明2,2-双(三甲基甲硅烷基)二噻唑的电离电位小于2,2-二甲基二噻唑的电离电位。结果由导致更高 HOMO 能级的 σ(Si-R)-π 相互作用来解释。从头算 MO 计算支持实验结果。