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An AlAl One‐Electron π Bond
Author(s) -
Pluta Christian,
Pörschke KlausR.,
Krüger Carl,
Hildenbrand Knut
Publication year - 1993
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199303881
Subject(s) - bond , lithium (medication) , electron , ion , crystallography , chemistry , bond length , salt (chemistry) , materials science , physics , crystal structure , economics , organic chemistry , nuclear physics , finance , medicine , endocrinology
Not a reductive rupture, but a strengthening of the AlAl bond is the result of the reduction of the dialane 1 with lithium. The salt isolated after addition of TMEDA contains the radical anion of 1 , in which, as results of an X‐ray structural analysis show, the AlC bonds are distinctly longer (+0.06 Å) and the AlAl bond considerably shorter (−0.13 Å) than in 1 itself. These findings are in accord with results of MO calculations, which indicate a stabilization of the AlAl bond by the additional electron.