Spectroscopic Studies of the Structures of the Dimer of Diethylaluminum 2-Aminoethoxide (AlEt2OCH2CH2NH2)2 and Related Compounds

Publisher Website
Google Scholar
Abstract
The infrared and proton nuclear magnetic resonance spectra of the solutions of diethylaluminum 2-aminoethoxide (AlEt2OCH2CH2NH2)2 and related compounds were measured. The infrared frequencies and intensities of the NH2 stretching, scissors, and rocking vibration bands, and the NMR internal chemical shifts of the ethyl groups attached to the aluminum atom were compared with the corresponding data of suitable model compounds. It was concluded by taking the results of these experiments into consideration that (AlEt2OCH2CH2NH2)2 was represented by the structural formula I with two Al←NH2 coordination bonds. Similarly, most of the related compounds studied were reasonably represented by the formulas with two Al←NRR′ coordination bonds, while (AlEt2OCH2CH2N(C6H11)2)2 was assumed to be represented by formula III with two Al←O coordination bonds, exceptionally.