Hypervalent Sulfur-Functionalized Diphosphagermylene and Diphosphastannylene Compounds
收藏NIAID Data Ecosystem2026-03-09 收录
下载链接：
https://figshare.com/articles/dataset/Hypervalent_Sulfur_Functionalized_Diphosphagermylene_and_Diphosphastannylene_Compounds/2564590
下载链接
链接失效反馈官方服务：
资源简介：
The reaction between either GeCl2(1,4-dioxane)
or SnCl2 and 2 equiv of the lithium phosphide [{(Me3Si)2CH}P(C6H4-2-SMe)]Li(tmeda)
gives the
corresponding diphosphatetrylenes [{(Me3Si)2CH}P(C6H4-2-SMe)]2E [E = Ge (10), Sn (11)] in good yields. Both 10 and 11 crystallize as discrete monomers in which the
Ge and Sn atoms are coordinated by both P and S atoms. Although 10 and 11 crystallize as racemic mixtures of
the RR and SS diastereomers, variable-temperature
NMR experiments suggest that, in solution, these compounds are in
dynamic equilibrium with small amounts of the corresponding RS and SR diastereomers. DFT calculations
reveal that the lowest-energy minima for both 10 and 11 possess rac stereochemistry; two higher-energy
minima were located for each of 10 and 11, both of which have meso stereochemistry. The two
calculated meso diastereomers differ in the location
of the sulfur and phosphorus substituents within the pseudo-trigonal-bipyramidal
structures. Both 10 and 11 decompose on
exposure to light, generating the diphosphine {(Me3Si)2CH}(C6H4-2-SMe)P-P(C6H4-2-SMe){CH(SiMe3)2} (14) as the major product.
创建时间：
2016-02-22
