The prepn. and ESR of radical complexes (I; MRn = BePh, MgPh, ZnPh, -BEt3, GaMe2, InMe2, SiMe3) are described. While the SiOMe3 deriv. could be obtained via 1-electron oxidn. of the corresponding 4,4'-(1H,1'H)-bipyridinylidene, the other complexes were prepd. by the reaction of 4,4'-bipyridine with K and the organometal MRn+1 or the halide XMRn in THF. Use of organocadmium or -thallium compds. in such a procedure leads to deposition of the metals. The Grignard reagents MgPh2 and BrMgPh reduce 4,4'-bipyridine in an electron transfer process to yield an unsym. complex. The new organometallic 4,4'-bipyridinium (violene) radical complexes can be incorporated into a series of related radicals which exhibits the sensitivity of the unpaired electron distribution towards metal coordination. [on SciFinder(R)]
%0 Journal Article
%1 Kaim.1983b
%A Kaim, Wolfgang.
%D 1983
%J Journal of Organometallic Chemistry
%K ESR bipyridine complex;metallaviolene organometallic redn
%N 2
%P 157--169
%R 10.1016/S0022-328X(00)98503-6
%T Metallaviolenes. An ESR study
%V 241
%X The prepn. and ESR of radical complexes (I; MRn = BePh, MgPh, ZnPh, -BEt3, GaMe2, InMe2, SiMe3) are described. While the SiOMe3 deriv. could be obtained via 1-electron oxidn. of the corresponding 4,4'-(1H,1'H)-bipyridinylidene, the other complexes were prepd. by the reaction of 4,4'-bipyridine with K and the organometal MRn+1 or the halide XMRn in THF. Use of organocadmium or -thallium compds. in such a procedure leads to deposition of the metals. The Grignard reagents MgPh2 and BrMgPh reduce 4,4'-bipyridine in an electron transfer process to yield an unsym. complex. The new organometallic 4,4'-bipyridinium (violene) radical complexes can be incorporated into a series of related radicals which exhibits the sensitivity of the unpaired electron distribution towards metal coordination. [on SciFinder(R)]
@article{Kaim.1983b,
abstract = {The prepn. and ESR of radical complexes (I; MRn = BePh, MgPh, ZnPh, -BEt3, GaMe2, InMe2, SiMe3) are described. While the SiOMe3 deriv. could be obtained via 1-electron oxidn. of the corresponding 4,4'-(1H,1'H)-bipyridinylidene, the other complexes were prepd. by the reaction of 4,4'-bipyridine with K and the organometal MRn+1 or the halide XMRn in THF. Use of organocadmium or -thallium compds. in such a procedure leads to deposition of the metals. The Grignard reagents MgPh2 and BrMgPh reduce 4,4'-bipyridine in an electron transfer process to yield an unsym. complex. The new organometallic 4,4'-bipyridinium (violene) radical complexes can be incorporated into a series of related radicals which exhibits the sensitivity of the unpaired electron distribution towards metal coordination. [on SciFinder(R)]},
added-at = {2022-06-15T11:26:56.000+0200},
author = {Kaim, Wolfgang.},
biburl = {https://puma.ub.uni-stuttgart.de/bibtex/24f47af88234ffbed15934503b60f4342/huebleriac},
doi = {10.1016/S0022-328X(00)98503-6},
interhash = {af2425c8f50bfeca0bb0d0538997513f},
intrahash = {4f47af88234ffbed15934503b60f4342},
journal = {Journal of Organometallic Chemistry},
keywords = {ESR bipyridine complex;metallaviolene organometallic redn},
number = 2,
pages = {157--169},
timestamp = {2022-06-15T09:26:56.000+0200},
title = {Metallaviolenes. An ESR study},
volume = 241,
year = 1983
}
