Silver(I) Complex of a Crown Thioether Retaining the Transoid S–C–C–S Ligand Conformation
作者:Rolf Gleiter、Harald Röckel、Bernhard Nuber
DOI:10.1002/cber.19961290517
日期:1996.5
The crown thioether 3 with the novel diisopropylidene building block was synthesized by an S′N cyclization reaction of 2,7-dichloro-2,7-dimethylocta-3,5-diyne (1) with 3-thia-pentane-1,5-dithiol (2). Ligand 3 shows all the sulfur centers in exodentate positions. Reaction of 3 with Ag1 triflate and triphenylphosphane yielded the tetrahedral complex 4, which shows unique spectroscopic data in solution
硫醚冠3与新颖二异构建块是由一个S'合成ñ 2,7-二氯-2,7-二甲基辛-3,5-二炔(环化反应1)与3-硫杂戊烷-1,5-二-二硫醇(2)。配体3显示所有硫中心都在齿状位置。3与三氟甲磺酸Ag 1和三苯基膦反应生成四面体络合物4,这在溶液中显示出独特的光谱数据。结晶提供了两种不同的晶体形式(4a和4b)。两者都是在固态中稳定的不同构象异构体。4a具有顺式SCCS链的硫醚配体的冠状结构。据我们所知4b是第一个带有冠状硫醚的银(1)配合物,在金属配合物中保留了反式SCCS构象。