Hydrogen Activation by an Iridium(III) Complex Bearing a Bidentate Protic NH,NR-NHC∧Phosphine Ligand
Benzimidazole 2 bearing an N1-(biscyclohexylphosphine)ethyl tether cleaves [IrCp*Cl2]2 to yield the mononuclear phosphine complex [3]. Heating of [3] yields via a formal C/N tautomerization complex [4]Cl with a protic NHC. Complex [4]Cl can be N3-deprotonated to give its conjugate base [6]. Complex...
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Veröffentlicht in: | Organometallics 2015-11, Vol.34 (22), p.5454-5460 |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
Online-Zugang: | Volltext |
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Zusammenfassung: | Benzimidazole 2 bearing an N1-(biscyclohexylphosphine)ethyl tether cleaves [IrCp*Cl2]2 to yield the mononuclear phosphine complex [3]. Heating of [3] yields via a formal C/N tautomerization complex [4]Cl with a protic NHC. Complex [4]Cl can be N3-deprotonated to give its conjugate base [6]. Complex [6] is able to activate molecular hydrogen under mild conditions, leading to complex [5]BF4. The molecular structures of complexes [3], [4]Cl, [5]Cl, and [5]BF4 have been determined by X-ray diffraction studies. |
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ISSN: | 0276-7333 1520-6041 |
DOI: | 10.1021/acs.organomet.5b00799 |