Issue 12, 2022

Lewis acid–base adducts of Al(N(C6F5)2)3 and Ga(N(C6F5)2)3 – structural features and dissociation enthalpies

Abstract

Herein we present the molecular structures of six neutral Lewis acid–base adducts of the Lewis superacid Al(N(C6F5)2)3 and its higher homolog Ga(N(C6F5)2)3 with the electron pair donors MeCN, CNtBu, THF and PMe3. The crystal structures reveal crucial structural changes compared to the free Lewis acids as a consequence of the adduct formation. Furthermore, we calculated the corresponding dissociation enthalpies of the adducts which lie between 69 and 141 kJ mol−1 and are therefore considerably lower compared to the values for the formation of the anionic fluoride or chloride metallates.

Graphical abstract: Lewis acid–base adducts of Al(N(C6F5)2)3 and Ga(N(C6F5)2)3 – structural features and dissociation enthalpies

Supplementary files

Article information

Article type
Paper
Submitted
01 Sun 2022
Accepted
23 Yan 2022
First published
25 Yan 2022

Dalton Trans., 2022,51, 4829-4835

Lewis acid–base adducts of Al(N(C6F5)2)3 and Ga(N(C6F5)2)3 – structural features and dissociation enthalpies

J. F. Kögel, D. A. Sorokin, M. Scott, K. Harms, D. Himmel, I. Krossing and J. Sundermeyer, Dalton Trans., 2022, 51, 4829 DOI: 10.1039/D2DT00003B

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