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Structures of Two Highly Reactive Intermediates upon LiAlH 4 Reduction in the Solid State and in Solution: [(Me 3 Si) 2 NAlH 3 Li · 2Et 2 O] 2 and [(Me 3 Si) 2 N] 2 AlH 2 Li · 2Et 2 O
Author(s) -
Heine Andreas,
Stalke Dietmar
Publication year - 1992
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.199208541
Subject(s) - chemistry , hydride , ring (chemistry) , crystallography , atom (system on chip) , reduction (mathematics) , solid state , state (computer science) , coupling (piping) , materials science , hydrogen , geometry , organic chemistry , mathematics , algorithm , computer science , embedded system , metallurgy
A central kite‐shaped AlH 2 Li ring in which the Li atom bridges the two hydride ligands bound to the Al atom is found in an intermediate of the reaction of HN(SiMe 3 ) 2 with LiAlH 4 . The bond angles show that compound 1 is relatively strained. Nevertheless, 1 does not dissociate in solution; in the 7 Li NMR spectrum at low temperature a 1 J Li, H coupling is observed.