Jump to main content
Jump to site search

Issue 15, 2013
Previous Article Next Article

CO2reductionvia aluminum complexes of ammonia boranes

Author affiliations

Abstract

Reactions of amine-boranes NH3BH3, Me2NHBH3, or Me3NBH3 with AlX3 (X = Cl, Br, I, C6F5) have been examined. The species AlBr3·H3BNMe32, Al(C6F5)3·H3BNMe33, Al(C6F5)3·H3BNHMe24 and Al(C6F5)3·H3BNH35 have been prepared and isolated. The analogous reaction of B(C6F5)3 and H3BNMe3 results in C6F5-transfer and the formation of (C6F5)BH2·NMe36. While the adduct 6 was unreactive to CO2, species 3 reacts with CO2 to give the formate linked Al(C6F5)3(HCO2)H2BNMe38. The species R3PC(OAl(C6F5)3)2 (R = o-tol (1′-C666F555), R = Mes (1-C66F55)) were prepared, and 1′-C666F555 was shown to react with amine-boranes to effect the reduction of this bound-CO2 to formate and methoxide-derivatives, proceeding through intermediates including 8 and [(Me3NBH2)2(μ-H)][(HCO2)(Al(C6F5)3)2] 9. The salt [tBu3PH][(HCO2)(Al(C6F5)3)2] 10 was prepared independently.

Graphical abstract: CO2 reduction via aluminum complexes of ammonia boranes

Back to tab navigation

Supplementary files

Article information


Submitted
11 Jan 2013
Accepted
12 Feb 2013
First published
20 Feb 2013

Dalton Trans., 2013,42, 5447-5453
Article type
Paper

CO2 reduction via aluminum complexes of ammonia boranes

G. Ménard and D. W. Stephan, Dalton Trans., 2013, 42, 5447
DOI: 10.1039/C3DT00098B

Social activity

Search articles by author

Spotlight

Advertisements