In:
European Journal of Inorganic Chemistry, Wiley, Vol. 2013, No. 13 ( 2013-05), p. 2460-2466
Abstract:
Dialuminum formamidinate complexes [Me 2 Al(μ‐Form)(μ‐Me)AlMe 2 ] [Form (ArNCHNAr) = EtForm (Ar = 2,6‐Et 2 C 6 H 3 ) or DippForm (Ar = 2,6‐ i Pr 2 C 6 H 3 )] were obtained in good yields by treatment of formamidines (FormH) with trimethylaluminum in a 1:3 stoichiometry. The products contain both a bridging Form ligand and a bridging methyl group between the two aluminum centers. [M(Form)Me 2 ] (M = Al, Form = DippForm, EtForm; M = Ga, Form = DippForm) were prepared in high yields by the protonolysis reactions of MMe 3 (M = Al, Ga) with formamidines (FormH) in a 1:1 stoichiometry. [Al(DippForm)Me 2 ] was also synthesized by other methods including concentration of the tetrahydrofuran/ n ‐hexane solution of [Me 2 Al(μ‐DippForm)(μ‐Me)AlMe 2 ] to dryness and also by reaction of AlMe 3 with [Ga(DippForm)Me 2 ] in a 1:1 ratio. Partial dissociation of the dialuminum to monoaluminum complexes was detected in the 1 H NMR spectra of [Me 2 Al(μ‐Form)(μ‐Me)AlMe 2 ] complexes. All complexes exhibit a distorted tetrahedral stereochemistry of the Group 13 metal atoms.
Type of Medium:
Online Resource
ISSN:
1434-1948
,
1099-0682
DOI:
10.1002/ejic.v2013.13
DOI:
10.1002/ejic.201201515
Language:
English
Publisher:
Wiley
Publication Date:
2013
detail.hit.zdb_id:
1475009-0
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