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Activity of SPANphos Rhodium Dimers in Methanol Carbonylation
Author(s) -
Freixa Zoraida,
Kamer Paul C. J.,
Lutz Martin,
Spek Anthony L.,
van Leeuwen Piet W. N. M.
Publication year - 2005
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200500226
Subject(s) - carbonylation , rhodium , chemistry , methanol , diphosphines , methyl iodide , iodide , oxidative addition , medicinal chemistry , catalysis , organic chemistry , carbon monoxide
Contrary to earlier speculation , mononuclear rhodium species that contain trans diphosphines, such as SPANphos, are inactive towards the oxidative addition of methyl iodide, whereas the corresponding dinuclear species are very reactive. Thus, the active species in methanol carbonylation is most likely the dimeric system (see scheme; P orange, O red, Rh blue, Cl green).