Concomitant Carboxylate and Oxalate Formation From the Activation of CO 2 by a Thorium(III) Complex - INSA Toulouse - Institut National des Sciences Appliquées de Toulouse Access content directly
Journal Articles Chemistry - A European Journal Year : 2016

Concomitant Carboxylate and Oxalate Formation From the Activation of CO 2 by a Thorium(III) Complex

Abstract

Improving our comprehension of diverse CO2 activation pathways is of vital importance for the widespread future utilization of this abundant greenhouse gas. CO2 activation by uranium(III) complexes is now relatively well understood, with oxo/carbonate formation predominating as CO2 is readily reduced to CO, but isolated thorium(III) CO2 activation is unprecedented. We show that the thorium(III) complex, [Th(Cp′′)3] (1, Cp′′={C5H3(SiMe3)2‐1,3}), reacts with CO2 to give the mixed oxalate‐carboxylate thorium(IV) complex [{Th(Cp′′)2[κ2‐O2C{C5H3‐3,3′‐(SiMe3)2}]}2(μ‐κ2:κ2‐C2O4)] (3). The concomitant formation of oxalate and carboxylate is unique for CO2 activation, as in previous examples either reduction or insertion is favored to yield a single product. Therefore, thorium(III) CO2 activation can differ from better understood uranium(III) chemistry.
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Dates and versions

hal-01968810 , version 1 (03-01-2019)

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  • HAL Id : hal-01968810 , version 1

Cite

Alasdair Formanuik, Fabrizio Ortu, Christopher Inman, Andrew Kerridge, Ludovic Castro, et al.. Concomitant Carboxylate and Oxalate Formation From the Activation of CO 2 by a Thorium(III) Complex. Chemistry - A European Journal, 2016, 22 (50), pp.17976-17979. ⟨hal-01968810⟩
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