Control of HC(sp3) Bond Cleavage Stoichiometry: Clean Reversible Alkyl Ligand Exchange with Alkane in [LPt(Alk)(H)2]+ (L=[2.1.1]-(2,6)-Pyridinophane)

Control of HC(sp3) Bond Cleavage Stoichiometry: Clean Reversible Alkyl Ligand Exchange with Alkane in [LPt(Alk)(H)2]+ (L=[2.1.1]-(2,6)-Pyridinophane)

Reversible alkane oxidative addition occurs to transient [LPtH]+ (L=[2.1.1]‐(2,6)‐pyridinophane; see scheme), which is generated at 86 °C from [LPtMe(H)2]+ in 1:1 hydrocarbon/CD2Cl2 mixtures. DFT calculations reveal why [LPtMe(H)2]+ eliminates methane, not dihydrogen, and why, in contrast to [LPtMe2...

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Veröffentlicht in:Angewandte Chemie International Edition 2002-11, Vol.41 (21), p.4102-4104
Hauptverfasser: Vedernikov, Andrei N., Caulton, Kenneth G.
Format: Artikel
Sprache:eng
Schlagworte:
alkanes
C-H activation
hydride ligands
platinum
structure-activity relationships
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Zusammenfassung:Reversible alkane oxidative addition occurs to transient [LPtH]+ (L=[2.1.1]‐(2,6)‐pyridinophane; see scheme), which is generated at 86 °C from [LPtMe(H)2]+ in 1:1 hydrocarbon/CD2Cl2 mixtures. DFT calculations reveal why [LPtMe(H)2]+ eliminates methane, not dihydrogen, and why, in contrast to [LPtMe2H]+, no alkane dehydrogenation occurs.
ISSN:1433-7851
1521-3773
DOI:10.1002/1521-3773(20021104)41:21<4102::AID-ANIE4102>3.0.CO;2-#