Silylium ion/phosphane Lewis pairs

M Reißmann, A Schäfer, S Jung, T Müller

Index: Reissmann, Matti; Schaefer, Andre; Jung, Sebastian; Mueller, Thomas Organometallics, 2013 , vol. 32, # 22 p. 6736 - 6744

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Citation Number: 38

Abstract

The reactivity of a series of silylium ion/phosphane Lewis pairs was studied. Triarylsilylium borates 4 [B (C6F5) 4] form frustrated Lewis pairs (FLPs) of moderate stability with sterically hindered phosphanes 2. Some of these FLPs are able to cleave dihydrogen under ambient conditions. The combination of bulky trialkylphosphanes with triarylsilylium ions can be used to sequester CO2 in the form of silylacylphosphonium ions 12. The ability to activate ...