SCHEDULED MAINTENANCE
Diquaternary salts of trans-1,2-di-(4-pyridyl)ethylene are reduced in aqueous solution by a one-electron transfer to give highly coloured radical cations which are more reactive than those derived from herbicidal bipyridylium salts. The salts of trans-1,2-di-(4-pyridyl)ethylene are, for practical purposes, inactive as herbicides.
J. E. Dickeson and L. A. Summers, J. Chem. Soc. C, 1969, 1643 DOI: 10.1039/J39690001643
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