Abstract Dihydrosilanes tethered with two thioether moieties,[2-(RSCH 2) C 6 H 4] 2 SiH 2 (1a: R= t-Bu; 1b: R= i-Pr; 1c: R= Ph), were synthesized. Dihydrosilane 1b did not react with methanol, benzaldehyde, and carboxylic acids; this result may suggest very weak activation of the Si [BOND] H bonds in 1b. The corresponding dibromosilanes 4 and diiodosilanes 5 were synthesized by dihalogenation of 1 using N-bromosuccinimide and I 2, respectively, ...