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Issue 19, 2020
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Salt metathesis as an alternative approach to access aluminium(i) and gallium(i) β-diketiminates

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Abstract

Salt metathesis, i.e. the reaction of sodium β-diketiminate with (AlCp*)4 and GaCp*, respectively, is a valuable pathway to access the respective aluminium(I) and gallium(I) β-diketiminates I and II. The protocol gives better yields compared to the established procedures and avoids the use of strong reducing agents such as metallic potassium. Furthermore, the aluminium(I) β-diketiminate I was found to react with itself and yields upon C–N bond cleavage and hydrogen-atom transfer the asymmetric dinuclear aluminium(III) complex V that is readily separated from I by crystallisation. The reaction mechanism has been probed by means of DFT and DLPNO-CCSD(T) calculations and the computational findings are in good agreement with the experimental observations.

Graphical abstract: Salt metathesis as an alternative approach to access aluminium(i) and gallium(i) β-diketiminates

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Article information


Submitted
12 Apr 2020
Accepted
20 Apr 2020
First published
30 Apr 2020

Dalton Trans., 2020,49, 6377-6383
Article type
Paper

Salt metathesis as an alternative approach to access aluminium(I) and gallium(I) β-diketiminates

O. Kysliak, H. Görls and R. Kretschmer, Dalton Trans., 2020, 49, 6377
DOI: 10.1039/D0DT01342K

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