𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Radical Cations and Radical Anions of Three Bridgehead Azopolycycloalkanes: A fluid-solution ESR study

✍ Scribed by Georg Gescheidt; Axel Lamprecht; Christoph Rüchardt; Michael Schmittel

Publisher
John Wiley and Sons
Year
1992
Tongue
German
Weight
285 KB
Volume
75
Category
Article
ISSN
0018-019X

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

The radical mono‐ions of three azoalkanes in which the azo group is connected to the polycyclic alkane moieties at the bridgehead C‐atoms, i.e. 1,1′‐azonorbornane (1), 1,1′‐azotwistane (2), and 1,1′‐azobicyclo[3.2.1]octane (3), were studied in fluid solution by ESR spectroscopy. According to the ESR parameters and MO models, the radical cations of 1–3 should be considered as σ radicals, whereas the corresponding radical anions are π radicals. INDO calculations point to a a remarkable dependence of the ^14^N‐coupling constants on the geometry at the N‐atoms in the radical cations of aliphatic azo compounds.

📜 SIMILAR VOLUMES

Radical Cations and Radical Anions of Th
Radical Cations and Radical Anions of Three Bridgehead Azopolycycloalkanes: A Fluid-Solution ESR Study
✍ Georg Gescheidt; Axel Lamprecht; Christoph Rüchardt; Michael Schmittel 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 German ⚖ 282 KB

## Abstract The radical mono‐ions of three azoalkanes in which the azo group is connected to the polycyclic alkane moieties at the bridgehead C‐atoms, __i. e__. 1,1′‐azonorbornane (1), 1,1′‐azotwistane (2), and 1,1′‐azobi‐cyclo[3.2.1]octane (3), were studied in fluid solution by ESR spectroscopy. A

Radical Anions and Radical Trianions of
Radical Anions and Radical Trianions of a Phosphabenzene and Some Diphospha Derivatives of Biphenyl, p-Terphenyl and p,p′-Quaterphenyl: an ESR and ENDOR Study
✍ Fabian Gerson; Pascal Merstetter; Susanne Pfenninger; Gottfried Märkl 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 321 KB 👁 2 views

The radical anions and radical trianions of 2,4,6-triphenylphosphabenzene (1), 3,3º,5,5º-tetraphenyl-4k3,4ºk3diphosphabiphenyl-1,1º (2), 3,3/,5,5/-tetraphenyl-4k3,4/k3-diphosphaterphenyl-1,1º : 4º,1/ (3) and 3,3Ó,5,5Ótetraphenyl-4k3,4Ók3-diphosphaquaterphenyl-1,1º : 4º,4/ : 1/,1Ó (4) were studied by

25Mg ENDOR and TRIPLE resonance in liqui
25Mg ENDOR and TRIPLE resonance in liquid solution of the bacteriochlorophyll a cation and anion radicals
✍ F. Lendzian; K. Möbius; M. Plato; U.H. Smith; M.C. Thurnauer; W. Lubitz 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 528 KB

Solution \*sM-ENDOR and TRIPLE n~~~~+nce esperiments have been performed on the bacteriochlorophyll a (BChl a) zJ anion and cation radicals enriched in 25hIg. The 2shfg isotropic hyperfime coupling constants for BChl a\* and BChl ar have been determined. The vaIues are in good agreement with those o

Effect of concentration and magnetic fie
Effect of concentration and magnetic field of radical ion (Wurster's blue cation and benzoquinone anion) quenching of anthracene triplets in fluid solution
✍ Hiroyasu Tachikawa; Allen J. Bard 📂 Article 📅 1974 🏛 Elsevier Science 🌐 English ⚖ 563 KB

The effect of magnetic field on the delayed fluorescence (DF) of anthracene in methylene chloride solutions in the presence of the radical cation of N, N, N', N'-tetramethyl-p-phenylenediamine (TMPD) and the radical anion of p-benzoquinone (BQ) has been studied. The results show strong quenching of