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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.
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Vorwort (Das Kind (1991) 10)
(1991)
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Vorwort (Das Kind (1992) 11)
(1992)
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Vorwort (Das Kind (1993) 14)
(1993)
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Vorwort (Das Kind (1993) 13)
(1993)
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Vorwort (Das Kind (1991) 9)
(1991)
No abstract available