TY  - JOUR
A1  - Hünig, Siegfried
A1  - Wehner, Ingeborg
T1  - Two Step Redox Systems LII: 2,2'-Bipyridylboronium Salts
N2  - Dications 1 derived from 2,2-bipyridine are found to exist as fully reversible two step redox systems with persistent radical ions (SEM) of high thermodynamic stability, if the bridge X forces the two pyridine rings into co planar positions. The well known derivative 1a (Diquat R) is now complemented by the boronium ions 1c and 1e -1g., as shown by voltammetry and the uv spectra of the corresponding radicals.
Y1  - 1989
UR  - https://opus.bibliothek.uni-wuerzburg.de/frontdoor/index/index/docId/3602
UR  - https://nbn-resolving.org/urn:nbn:de:bvb:20-opus-44853
ER  -