Reversible C−H Bond Activation in Coordinatively Unsaturated Molybdenum Aryloxy Complexes, Mo(PMe3)4(OAr)H: Comparison with Their Tungsten Analogs
Mo(PMe3)6 reacts with ArOH (Ar = C6H2Me3, C6H3Pri 2) to give aryloxy−hydride derivatives Mo(PMe3)4(OAr)H in contrast to the cyclometalated derivatives that are obtained for the corresponding tungsten system. Deuterium labeling and magnetization transfer studies, however, demonstrate that the coordin...
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| Published in: | Organometallics 1996-09, Vol.15 (19), p.3910-3912 |
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| Main Authors: | , , |
| Format: | Article |
| Language: | eng |
| Online Access: | Get full text |
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| Summary: | Mo(PMe3)6 reacts with ArOH (Ar = C6H2Me3, C6H3Pri 2) to give aryloxy−hydride derivatives Mo(PMe3)4(OAr)H in contrast to the cyclometalated derivatives that are obtained for the corresponding tungsten system. Deuterium labeling and magnetization transfer studies, however, demonstrate that the coordinatively unsaturated molybdenum complexes Mo(PMe3)4(OAr)H are in fact kinetically capable of intramolecular oxidative addition of a C−H bond to yield cyclometalated derivatives but that the products so obtained are thermodynamically unstable with respect to the aryloxy−hydride derivatives. |
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| ISSN: | 0276-7333 1520-6041 |