The recently reported paramagnetic compds. (dbdab)2M (dbdab = 1,4-di-tert-butyl-1,4-diazabutadiene, M = Ga, Al), both contain trivalent metal bound to one singly and one doubly reduced dbdab ligand; the larger metal hyperfine coupling in the EPR spectrum of the gallium complex is not due to a gallium(II) oxidn. state, it is simply a result of the quite large isotropic hyperfine coupling consts. of 69Ga and 71Ga as demonstrated previously for the related radicals (bpy-)MIIIMe2 (bpy = 2,2'-bipyridine). on SciFinder(R)
%0 Journal Article
%1 Kaim.1991b
%A Kaim, Wolfgang
%A Matheis, Walter.
%D 1991
%J Journal of the Chemical Society, Chemical Communications
%K ESR complex complex;gallium complex;hyperfine complex;valence coupling ditertbutyldiazabutadiene ditertibutyldiazabutadiene gallium valence
%N 8
%P 597--598
%R 10.1039/c39910000597
%T Bis(1,4-di-tert-butyl-1,4-diazabutadiene)gallium is not a gallium(II) compound
%X The recently reported paramagnetic compds. (dbdab)2M (dbdab = 1,4-di-tert-butyl-1,4-diazabutadiene, M = Ga, Al), both contain trivalent metal bound to one singly and one doubly reduced dbdab ligand; the larger metal hyperfine coupling in the EPR spectrum of the gallium complex is not due to a gallium(II) oxidn. state, it is simply a result of the quite large isotropic hyperfine coupling consts. of 69Ga and 71Ga as demonstrated previously for the related radicals (bpy-)MIIIMe2 (bpy = 2,2'-bipyridine). on SciFinder(R)
@article{Kaim.1991b,
abstract = {The recently reported paramagnetic compds. (dbdab)2M (dbdab = 1,4-di-tert-butyl-1,4-diazabutadiene, M = Ga, Al), both contain trivalent metal bound to one singly and one doubly reduced dbdab ligand; the larger metal hyperfine coupling in the EPR spectrum of the gallium complex is not due to a gallium(II) oxidn. state, it is simply a result of the quite large isotropic hyperfine coupling consts. of 69Ga and 71Ga as demonstrated previously for the related radicals (bpy-)MIIIMe2 (bpy = 2,2'-bipyridine). [on SciFinder(R)]},
added-at = {2019-07-15T13:41:23.000+0200},
author = {Kaim, Wolfgang and Matheis, Walter.},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/218b5e7b60cf805cbd46675bd7a9b7549/b_schwederski},
doi = {10.1039/c39910000597},
interhash = {8784d8ed3e3b2f90e48de0312884c887},
intrahash = {18b5e7b60cf805cbd46675bd7a9b7549},
issn = {0022-4936},
journal = {Journal of the Chemical Society, Chemical Communications},
keywords = {ESR complex complex;gallium complex;hyperfine complex;valence coupling ditertbutyldiazabutadiene ditertibutyldiazabutadiene gallium valence},
number = 8,
pages = {597--598},
timestamp = {2019-07-15T11:42:10.000+0200},
title = {Bis(1,4-di-tert-butyl-1,4-diazabutadiene)gallium is not a gallium(II) compound},
year = 1991
}