viologens

https://doi.org/10.1351/goldbook.V06624
1,1-Di(hydrocarbyl)-4,4'-bipyridinium salts.
V06624.png
Source:
PAC, 1995, 67, 1307. (Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)) on page 1374 [Terms] [Paper]