Abstract
Pyridine as well as 4,4'-bipyridine react with AlR3 (R = Me, Et, Ph, Cl) and alkali metals in THF to form persistent blue radical cation complexes of the violene type, which have the coordinatively unsatd. AlR2 substituents solvated by THF mols. 2,2'-Bipyridine reacts with alkyl- or arylaluminum compds. and alkali metals to yield neutral radicals, whose chelate structure leads to a coordinatively satd. Al atom. Therefore, these radicals are persistent also in noncoordinating solvents. The ESR data of the organoaluminum radicals indicate a distinct spin redistribution on complexation which is accompanied by radical stabilization. on SciFinder(R)
Users
Please
log in to take part in the discussion (add own reviews or comments).
