Organoaluminum radical complexes of nitrogen heterocycles. I. Pyridine derivatives
W. Kaim. Journal of Organometallic Chemistry, 215 (3):
325--335(1981)
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)
%0 Journal Article
%1 Kaim.1981g
%A Kaim, Wolfgang.
%D 1981
%J Journal of Organometallic Chemistry
%K alkali alkylaluminum;ESR aluminum bipyridine cation;pyridine meta pyridine radical reaction redn
%N 3
%P 325--335
%T Organoaluminum radical complexes of nitrogen heterocycles. I. Pyridine derivatives
%V 215
%X 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)
@article{Kaim.1981g,
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)]},
added-at = {2019-07-15T13:41:23.000+0200},
author = {Kaim, Wolfgang.},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/26a97cb26713944946982ff4537507155/b_schwederski},
interhash = {2052b48ce0f7f9cc755a1478b8aeeb79},
intrahash = {6a97cb26713944946982ff4537507155},
journal = {Journal of Organometallic Chemistry},
keywords = {alkali alkylaluminum;ESR aluminum bipyridine cation;pyridine meta pyridine radical reaction redn},
number = 3,
pages = {325--335},
timestamp = {2019-07-15T11:42:10.000+0200},
title = {Organoaluminum radical complexes of nitrogen heterocycles. I. Pyridine derivatives},
volume = 215,
year = 1981
}