Synthesis and reactivity of new bis(N-heterocyclic carbene) iridium(I) complexes

David J. Nelson, Byron J. Truscott, Alexandra M Z Slawin, Steven P. Nolan

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

New complexes of the type trans-[IrCl(η2-COE)(NHC) 2] (COE = cis-cyclooctene; NHC = N-heterocyclic carbene) have been prepared in one step from the reaction of ca. 4 equiv of NHC or [AgCl(NHC)] with [IrCl(η2-COE)2]2 in benzene. These new complexes have been characterized by techniques including NMR and IR spectroscopy, X-ray crystallography, and elemental analysis. Exposing trans-[IrCl(COE)(IiPrMe)2] to CO yielded trans-[IrCl(CO)(IiPrMe)2], which is the only bis(NHC) analogue of Vaska's complex trans-[IrCl(CO)(PPh3) 2] known to date. The synthesis of trans-[Ir(CO)(IiPr Me)2(R)] (R = MeO, PhCC, OSiPh3, O 2CPh) complexes has been achieved via deprotonation reactions involving the new hydroxide species trans-[Ir(OH)(CO)(IiPr Me)2].

Original languageEnglish
Pages (from-to)12674-12681
Number of pages8
JournalInorganic Chemistry
Volume52
Issue number21
Early online date22 Oct 2013
DOIs
Publication statusPublished - 4 Nov 2013
Externally publishedYes

Fingerprint

Iridium
carbenes
Carbon Monoxide
iridium
reactivity
synthesis
hydroxides
crystallography
benzene
analogs
nuclear magnetic resonance
Deprotonation
spectroscopy
X ray crystallography
Benzene
x rays
Nuclear magnetic resonance spectroscopy
Infrared spectroscopy
carbene
Chemical analysis

Keywords

  • X-ray crystallography
  • elemental analysis
  • trans-[Ir(OH)(CO)(IiPrMe)2]

Cite this

Nelson, David J. ; Truscott, Byron J. ; Slawin, Alexandra M Z ; Nolan, Steven P. / Synthesis and reactivity of new bis(N-heterocyclic carbene) iridium(I) complexes. In: Inorganic Chemistry. 2013 ; Vol. 52, No. 21. pp. 12674-12681.
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Synthesis and reactivity of new bis(N-heterocyclic carbene) iridium(I) complexes. / Nelson, David J.; Truscott, Byron J.; Slawin, Alexandra M Z; Nolan, Steven P.

In: Inorganic Chemistry, Vol. 52, No. 21, 04.11.2013, p. 12674-12681.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Synthesis and reactivity of new bis(N-heterocyclic carbene) iridium(I) complexes

AU - Nelson, David J.

AU - Truscott, Byron J.

AU - Slawin, Alexandra M Z

AU - Nolan, Steven P.

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N2 - New complexes of the type trans-[IrCl(η2-COE)(NHC) 2] (COE = cis-cyclooctene; NHC = N-heterocyclic carbene) have been prepared in one step from the reaction of ca. 4 equiv of NHC or [AgCl(NHC)] with [IrCl(η2-COE)2]2 in benzene. These new complexes have been characterized by techniques including NMR and IR spectroscopy, X-ray crystallography, and elemental analysis. Exposing trans-[IrCl(COE)(IiPrMe)2] to CO yielded trans-[IrCl(CO)(IiPrMe)2], which is the only bis(NHC) analogue of Vaska's complex trans-[IrCl(CO)(PPh3) 2] known to date. The synthesis of trans-[Ir(CO)(IiPr Me)2(R)] (R = MeO, PhCC, OSiPh3, O 2CPh) complexes has been achieved via deprotonation reactions involving the new hydroxide species trans-[Ir(OH)(CO)(IiPr Me)2].

AB - New complexes of the type trans-[IrCl(η2-COE)(NHC) 2] (COE = cis-cyclooctene; NHC = N-heterocyclic carbene) have been prepared in one step from the reaction of ca. 4 equiv of NHC or [AgCl(NHC)] with [IrCl(η2-COE)2]2 in benzene. These new complexes have been characterized by techniques including NMR and IR spectroscopy, X-ray crystallography, and elemental analysis. Exposing trans-[IrCl(COE)(IiPrMe)2] to CO yielded trans-[IrCl(CO)(IiPrMe)2], which is the only bis(NHC) analogue of Vaska's complex trans-[IrCl(CO)(PPh3) 2] known to date. The synthesis of trans-[Ir(CO)(IiPr Me)2(R)] (R = MeO, PhCC, OSiPh3, O 2CPh) complexes has been achieved via deprotonation reactions involving the new hydroxide species trans-[Ir(OH)(CO)(IiPr Me)2].

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