Relaxation of ring strain by introduction of a double bond

✍ Scribed by Yuji Naruse; Jing Ma; Satoshi Inagaki

• Book ID: 104231338
• Publisher: Elsevier Science
• Year: 2001
• Tongue: French
• Weight: 147 KB
• Volume: 42
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(01)01281-3

✦ Synopsis

Ring strains are relaxed by the cyclic orbital interaction between a p-bond and the s-bonds on the saturated atoms in the rings. An effective relaxation by the p-s* interaction occurs in the three-, four-, and five-membered silicon rings. Cyclotrisilene 2b, cyclotetrasilene 4b, and cyclopentasilene 6b have lower strains than those of the parent saturated analogs. However, the stabilization is less significant for the hydrocarbons.