@b_schwederski

Single electron transfer reaction of aluminum hydride with nitrogen-containing heterocycles. ESR characterization of the radical products

. Journal of the American Chemical Society 106 (6): 1712--1716 (1984)

Zusammenfassung

The single electron transfer of AlH3 and AlD3 in THF with pyrazine (I), quinoxaline (II), phenazine (III), 4,4'-bipyridine (IV), and 2,2'-bipyridine (bpy) were studied by ESR spectroscopy. Besides the conventional diamagnetic redn. products, persistent radical complexes formed as escape products that could be fully characterized by ESR. The paramagnetic species obtained from the bridging systems I-IV are binuclear radical anion complexes L(AlH3)2-· (L = I=IV), whereas the chelating bpy radical anion coordinates with one AlH2+ ion from the Al hydride dissocn. equil. A hyperconjugative model (pN/sAl-H) is used to relate the Al hydride coupling consts. with the coordination geometry in the radical formation. on SciFinder(R)

Links und Ressourcen

DOI:
10.1021/ja00318a026
BibTeX-Schlüssel:
Kaim.1984j
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