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- Title
The First Planar, Not Twisted, Distannene − A Structural Alkene Analog. Synthesis, Isolation and X‐ray Crystallography Characterization.
- Authors
Bashkurov, Roman; Fridman, Natalia; Bravo‐Zhivotovskii, Dmitry; Apeloig, Yitzhak
- Abstract
The tetrasilyl‐substituted distannene, (tBu2HSi)2Sn=Sn(SiHtBu2)26, was synthesized by mild thermolysis (70 °C in hexane) of tris(di‐tert‐butyl‐hydridosilyl)stannane 4. The X‐ray crystallography structure of 6 reveals the following unusual structural properties: a planar geometry around both Sn atoms (Σ∡Sn=359.87°), a non‐twisted Sn=Sn double bond, and the shortest Sn=Sn double bond of 2.599 Å among all acyclic distannenes. Thus, compound 6 is the first reported distannene having a structure closely analogous to a classic alkene. Reactions of 6 with CCl4 or with 2,3‐dimethylbuta‐1,3‐diene to produce 1,2‐dichlorodistannane 9 and the [2+4] cycloadduct 10, respectively, are characteristic for a Sn=Sn double bond.
- Subjects
X-ray crystallography; ALKENES; DOUBLE bonds; GROUP 14 elements
- Publication
Chemistry - A European Journal, 2023, Vol 29, Issue 69, p1
- ISSN
0947-6539
- Publication type
Article
- DOI
10.1002/chem.202302678