Abstract
Reaction of the aryl-monophosphine ligand α2- (diisopropylphosphino)isodurene (1) with the RhI precursor [Rh(coe)2(acetone)2]BF4 (coe = cyclooctene) in different solvents yielded complexes of all three common oxidation states of rhodium, depending on the solvent used. When the reaction was carried out in methanol a cyclometalated, solvent-stabilized RhIIIalkylhydride complex (2) was obtained. However, when the reaction was carried out in acetone or dichloromethane a dinuclear η6-arene RhII complex (5) was obtained in the absence of addedredox reagents. Moreover, when acetonitrile was added to a solution of either the RhII or Rh III complexes, a new solvent-stabilized, noncyclometalated Rh I complex (6) was obtained. In this report we describe the different complexes, which were fully characterized, and probe the processes behind the remarkable solvent effect observed.
Original language | English |
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Pages (from-to) | 9043-9055 |
Number of pages | 13 |
Journal | Chemistry - A European Journal |
Volume | 13 |
Issue number | 32 |
DOIs | |
Publication status | Published - Nov 19 2007 |
Keywords
- Arene complexes
- C-H activation
- Oxidation state
- Phosphanes
- Rhodium
- Solvent effects
ASJC Scopus subject areas
- Catalysis
- Organic Chemistry