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Issue 28, 2016
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Lewis acid–base adducts of group 13 elements: synthesis, structure and reactivity toward benzaldehyde

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Abstract

Lewis acid–base adducts [LGa-M(C6F5)3] (M = B 1, Al 2, Ga 3) were prepared by the reaction of gallanediyl LGa {L = HC[C(Me)N(2,6-i-Pr2C6H3)]2} with the Lewis acids M(C6F5)3 (M = B, Al, Ga). Benzaldehyde reacts with [LGa-M(C6F5)3] (M = B 1, Al 2) at room temperature with the insertion and formation of [LGa(C6F5){CH(Ph)(OB(C6F5)2)}] (4) and the zwitterionic species [LGa(C6F5){CH(Ph)(OAl(C6F5)2)}] (5), respectively, which was found to decompose at 80 °C with the formation of {(C6F5)2Al(OCH2Ph)}2 (6). Any attempts to isolate the insertion complex of [LGa-Ga(C6F5)3] with benzaldehyde failed and only {(C6F5)2Ga(OCH2Ph)}2 (7) was isolated at elevated temperatures. 2–5 and 7 were structurally characterized by heteronuclear NMR spectroscopy and single crystal X-ray diffraction.

Graphical abstract: Lewis acid–base adducts of group 13 elements: synthesis, structure and reactivity toward benzaldehyde

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Supplementary files

Article information


Submitted
29 Apr 2016
Accepted
09 Jun 2016
First published
14 Jun 2016

This article is Open Access

Dalton Trans., 2016,45, 11437-11444
Article type
Paper

Lewis acid–base adducts of group 13 elements: synthesis, structure and reactivity toward benzaldehyde

C. Ganesamoorthy, M. Matthias, D. Bläser, C. Wölper and S. Schulz, Dalton Trans., 2016, 45, 11437
DOI: 10.1039/C6DT01688J

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