C−H Bond Activation by Dicationic Platinum(II) Complexes.

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Title: C−H Bond Activation by Dicationic Platinum(II) Complexes.
Authors: Tom G. Driver1, Travis J. Williams1, Jay A. Labinger1, John E. Bercaw1
Source: Organometallics. Jan2007, Vol. 26 Issue 2, p294-301. 8p.
Subjects: Complex compounds, Platinum, Coordination compounds, Activation (Chemistry)
Abstract: Double protonolysis of diimine platinum dimethyls (N-N)PtMe2(N-N ArNC(Me)C(Me)NAr) generates dicationic Pt(II) complexes that can activate a variety of C−H bonds, liberating 1 equiv of acid and forming organoplatinum species that are moderately stable to the resulting acidic conditions. Ethylbenzenes lead to 3-benzyl complexes; mechanistic experiments suggest that 3-benzyl product formation proceeds via C−H bond activation at the benzylic methylene position. In some cases -arene complexes can be observed, but their role in the C−H activation process is not clear. Cyclohexane and 1-pentene react to give 3-allyl complexes; allylbenzene gives a chelated phenyl-2-olefin structure, as determined by X-ray diffraction. No stable C−H activation products are obtained from methylbenzenes, benzene itself, or alkanes. [ABSTRACT FROM AUTHOR]
Copyright of Organometallics is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Double protonolysis of diimine platinum dimethyls (N-N)PtMe2(N-N ArNC(Me)C(Me)NAr) generates dicationic Pt(II) complexes that can activate a variety of C−H bonds, liberating 1 equiv of acid and forming organoplatinum species that are moderately stable to the resulting acidic conditions. Ethylbenzenes lead to 3-benzyl complexes; mechanistic experiments suggest that 3-benzyl product formation proceeds via C−H bond activation at the benzylic methylene position. In some cases -arene complexes can be observed, but their role in the C−H activation process is not clear. Cyclohexane and 1-pentene react to give 3-allyl complexes; allylbenzene gives a chelated phenyl-2-olefin structure, as determined by X-ray diffraction. No stable C−H activation products are obtained from methylbenzenes, benzene itself, or alkanes. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Organometallics is the property of American Chemical Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1021/om060792r
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      – Code: eng
        Text: English
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        StartPage: 294
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        Type: general
      – SubjectFull: Platinum
        Type: general
      – SubjectFull: Coordination compounds
        Type: general
      – SubjectFull: Activation (Chemistry)
        Type: general
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      – TitleFull: C−H Bond Activation by Dicationic Platinum(II) Complexes.
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              Text: Jan2007
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              Y: 2007
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