Multiple deprotonation of primary aromatic diamines by LiAlH4.
Change log
Authors
Less, Robert J
Allen, Lucy K
Steiner, Alexander
Wright, Dominic S
Abstract
Reaction of LiAlH4 with 1,2-phenylenediamine (1H4) in THF results in formation of the metallocyclic amido-/imido complex [{Al(1H2)}2{Al(1H)2}2][Li(THF)2]4 (3), while in the presence of various Lewis base ligands 1,8-diaminonaphthalene (2H4) gives the amido-('ate') complexes Al(2H2)2Li(LL') [L = THF, L' = PMDETA (N,N,N',N',N''-pentamethyldiethylenetriamine) (4); L = L' = TMEDA (N,N,N',N'-tetramethylethylenediamine) (5)]. The latter complexes provide evidence of intermediates in the proposed reaction pathway for formation of the cyclic framework of the tetraanion {Al(1H2)}2{Al(1H)2}2 of 3.
Description
Keywords
0303 Macromolecular and Materials Chemistry
Journal Title
Dalton Trans
Conference Name
Journal ISSN
1477-9226
1477-9234
1477-9234
Volume Title
44
Publisher
Royal Society of Chemistry (RSC)
Publisher DOI
Sponsorship
We thank the EU (ERC Advanced Investigator Grant for
D.S.W.), the EU (R.J.L. and L.K.A.). We also thank Dr. J. E.
Davies for collecting X-ray data on 3, 4 and 5.