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- W2101898051 abstract "A discussion is given of the formation of complexes of the reaction of 1,4-di-t-butyl-1,4-diaza-1,3-butadiene t-Bu-NCHCHN-t-Bu (t-Bu-DAB) or of t-Bu-NCH-2-C5H4N (t-Bu-Pyca) with Et2Zn or Et3Al. It is shown that after the initial formation of four-coordinate complexes Et2Zn(t-Bu-DAB)_and Et2Zn(t-Bu-Pyca) with chelated diimine groups and of Et3Al(t-Bu-DAB) and Et3Al(t-Bu-Pyca) with monodentate bonded diimine groups a variety of reactions may occur. These reactions involve ethyl transfer to either the C- or the N-atoms of the ligand NCCN skeleton, and the formation of persistent organo-zinc and -aluminium radical complexes was also observed. The latter radical complexes have been studied by ESR spectroscopy. In the case of zinc the radical complex [EtZn(t-Bu-DAB).] is in equilibrium with a dinuclear complex in which the two t-Bu-DAB ligands are coupled via a CC bond. The mechanistic aspects of the reaction are briefly discussed." @default.
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- W2101898051 date "1983-07-01" @default.
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- W2101898051 title "Stable 1,4-diaza-1,3-butadiene(α-diimine)-zinc and -aluminium radicals formed in single electron transfer reactions: their consequences for organic syntheses" @default.
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- W2101898051 doi "https://doi.org/10.1016/0022-328x(83)85039-6" @default.
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