Die Reduktion von Azulen mit Natrium zum Kontaktionen-Tripel [Dinatrium-(1,1′,6,6′-Tetrahydro-6,6′-bi(azulen)-1,1′-diid)–bis (diglyme)]∞
✍ Scribed by Hans Bock; Claudia Arad; Christian Näther; Ilka Göbel
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- German
- Weight
- 464 KB
- Volume
- 79
- Category
- Article
- ISSN
- 0018-019X
No coin nor oath required. For personal study only.
✦ Synopsis
The Sodium Reduction of Azulene to the Contact‐Ion Triple [Disodium‐(1,1′,6,6′‐Tetrahydro‐6,6′‐bi(azulene)‐1,1′‐diide)–bis(diglyme)]~∞~
Colorless air‐sensitive single crystals can be grown from a diglyme solution after the reduction of azulene by a Na‐metal mirror. Structure determination at 150 K reveals a dimer dianion, in which the seven‐membered rings are connected in 6,6′‐positions and doubly diglyme‐solvated Na^+^ counter cations η^5^‐coordinate to the five‐membered rings. Based on preceding cyclovoltammetric measurements in aprotic azulene solutions as well as on extensive MNDO enthalpy of formation calculations, a proposal is forwarded how possibly the contact ion triple is formed along a microscopic pathway.