Activity of SPANphos Rhodium Dimers in Methanol Carbonylation

Authors

  • Zoraida Freixa Dr.,

    1. Institute of Chemical Research of Catalonia (ICIQ), Avda. Països Catalans s/n., Tarragona, Spain, Fax: (+34) 97792-0221
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  • Paul C. J. Kamer Dr.,

    1. Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, Amsterdam, The Netherlands, Fax: (+31) 20525-5406
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  • Martin Lutz Dr.,

    1. Bijvoet Center for Biomolecular Research, Department of Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
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  • Anthony L. Spek Prof. Dr.,

    1. Bijvoet Center for Biomolecular Research, Department of Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
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  • Piet W. N. M. van Leeuwen Prof.

    1. Van't Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, Amsterdam, The Netherlands, Fax: (+31) 20525-5406
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  • Dr. Gisela Colet and Dr. Lluís Solà from the Research Support Area of ICIQ are kindly acknowledged for the help on the use of the React IR 4000 spectrometer.

Abstract

original image

Entgegen der Mutmaßung gehen einkernige trans-Diphosphan-Rhodiumkomplexe von Liganden wie SPANphos keine oxidative Addition von Methyliodid ein, wohingegen die entsprechenden zweikernigen Spezies sehr reaktiv sind. Demnach scheint der dimere Komplex die katalytisch aktive Spezies in der Carbonylierung von Methanol zu sein (siehe Schema; P orange, O rot, Rh blau, Cl grün).

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