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[IrCl{N(CHCHPtBu2)2}]−: a versatile source of the IrI(PNP) pincer platformElectronic supplementary information (ESI) available. CCDC 967913, 967914, 967915 and 973313. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c3dt53304b
The iridium( ii ) complex [IrCl{N(CHCHP t Bu 2 ) 2 }] is reduced by KC 8 to give the anionic iridium( i ) pincer complex [IrCl{N(CHCHP t Bu 2 ) 2 }] − which was isolated and fully characterized upon stabilization of the counter cation with crown ether as [K(15-cr-5) 2 ][IrCl{N(CHCHP t Bu 2 ) 2 }]. T...
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Main Authors: | , , , , , , |
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Format: | Article |
Language: | English |
Online Access: | Get full text |
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Summary: | The iridium(
ii
) complex [IrCl{N(CHCHP
t
Bu
2
)
2
}] is reduced by KC
8
to give the anionic iridium(
i
) pincer complex [IrCl{N(CHCHP
t
Bu
2
)
2
}]
−
which was isolated and fully characterized upon stabilization of the counter cation with crown ether as [K(15-cr-5)
2
][IrCl{N(CHCHP
t
Bu
2
)
2
}]. This unprecedented anionic iridium(
i
) pincer complex completes the unusual, structurally characterized Ir
I
/Ir
II
/Ir
III
redox series [IrCl{N(CHCHP
t
Bu
2
)
2
}]
−/0/+
, all in a square-planar coordination geometry, emphasizing the versatility of this PNP pincer ligand in stabilizing a broad range of oxidation states. The anionic chloro complex is a versatile source of the Ir(PNP) platform. Its reactivity was examined towards chloride ligand substitution against CO and N
2
, and oxidative addition of C-electrophiles, C-H bonds and dioxygen, allowing for the isolation of iridium(
i
) and iridium(
iii
) (PNP) carbonyl, hydrocarbyl and peroxo complexes which were spectroscopically and crystallographically characterized.
The iridium(
ii
) complex [IrCl{N(CHCHP
t
Bu
2
)
2
}] is reduced by KC
8
to give the anionic iridium(
i
) pincer complex [IrCl{N(CHCHP
t
Bu
2
)
2
}]
−
which was isolated and fully characterized upon stabilization of the counter cation with crown ether as [K(15-cr-5)
2
][IrCl{N(CHCHP
t
Bu
2
)
2
}]. |
---|---|
ISSN: | 1477-9226 1477-9234 |
DOI: | 10.1039/c3dt53304b |