Taming Neutral Silylidenebismuthanes (SiBi) with a Low-Coordinate Bismuth Atom
Annapurna Saxena, Shenglai Yao, Jan Dirk Epping, Matthias Driess · 2026
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Description
Annapurna Saxena and colleagues report the first stable silicon-bismuth double bond compounds in 2026. Double bonds involving bismuth are exceedingly rare because the overlap between large atoms is weak. Two complexes were made by salt exchange from a silicon chloride and potassium bismuth reagents, in yields of 55 percent and 60 percent.
An expected single-bond form could not be observed, since a silyl group slid from bismuth to silicon and created the double bond directly. Adding a tungsten carbonyl unit flipped the shape around the bond and weakened the pi interaction. Computer models backed the bonding picture. The work opens a new corner of heavy main-group chemistry for study.
Catalog record
| CREATOR | Annapurna Saxena, Shenglai Yao, Jan Dirk Epping, Matthias Driess |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 16608 |
| LICENSE | https://creativecommons.org/licenses/by/4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |