198023-08-4

Upstream product

• 198023-03-9 5-[2,4,6-tris[bis(trimethylsilyl)methyl]phenyl]-5-[2,6-bis(2-isopropylphenyl)phenyl]-1,2,3,4,5-tetraselenastannolane 
• 210576-57-1 (2,4,6-tris[Bis(trimethylsilyl)methyl]phenyl)(2,2''-diisopropyl-m-terpheny-2'-yl)stannylene 

Relevant academic research and scientific papers

Stable stannaneselone and diselena-stannirane: Novel organotin compounds derived from an extremely hindered tetraselenastannolane

The first kinetically stabilized stannaneselone, Tbt(Ditp)Sn=Se (Tbt = 2,4,6-tris[bis(trimethylsilyl)methyl]phenyl; Ditp = 2,2″-diisopropyl-m-terphenyl-2′-yl), with a tin-selenium double bond and a stable diselenastannirane, Tbt(Ditp)SnSe2 were synthesized by deselenation of the corresponding tetraselenastannolane, Tbt(Ditp)SnSe4 with 3 equiv. and 2 equiv. triphenylphosphine, respectively. The X-ray structural analysis of the stannaneselone revealed that it has a trigonal planar structure with the Sn-Se bond length of 2.375(3) ?, which is approximately 9% shorter than that of the corresponding single bond and the shortest among Sn-Se bond lengths so far reported. The molecular structure of diselenastannirane determined by X-ray analysis shows that it has an unusually long Se-Se bond (2.524 ?), about 0.2 ? longer than a typical Se-Se single bond.