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Chlorobis(cyclooctene)iridium dimer

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Chlorobis(cyclooctene)iridium dimer
Names
IUPAC name Chlorobis(cyclooctene)iridium(I) dimer
Other names Di-μ-chlorotetrakis(cyclooctene)diiridium(I), 2
Identifiers
CAS Number
3D model (JSmol)
ECHA InfoCard 100.159.657 Edit this at Wikidata
EC Number
  • 631-416-6
PubChem CID
CompTox Dashboard (EPA)
InChI
  • InChI=1S/4C8H14.2ClH.2Ir/c4*1-2-4-6-8-7-5-3-1;;;;/h4*1-2H,3-8H2;2*1H;;/p-2/b4*2-1-;;;;Key: CJJIQMGSHWWMCK-XFCUKONHSA-L
SMILES
  • C1CCCC=CCC1.C1CCCC=CCC1.C1CCCC=CCC1.C1CCCC=CCC1....
Properties
Chemical formula C32H56Cl2Ir2
Molar mass 896.13
Appearance yellow solid
Melting point 160-165 °C
Hazards
GHS labelling:
Pictograms GHS07: Exclamation mark
Signal word Warning
Hazard statements H315, H319, H335
Precautionary statements P261, P280, P304+P340, P305+P351+P338, P321, P332+P313, P362, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). Infobox references
Chemical compound

Chlorobis(cyclooctene)iridium dimer is an organoiridium compound with the formula Ir2Cl2(C8H14)4, where C8H14 is cis-cyclooctene. Sometimes abbreviated Ir2Cl2(coe)4, it is a yellow, air-sensitive solid that is used as a precursor to many other organoiridium compounds and catalysts.

The compound is prepared by heating an alcohol solution of sodium hexachloroiridate with cyclooctene in ethanol. The coe ligands are easily displaced by other more basic ligands, more so than the diene ligands in the related complex cyclooctadiene iridium chloride dimer. For example, with triphenylphosphine (PPh3), it reacts to give IrCl(PPh3)3:

Ir2Cl2(C8H14)4 + 6 PPh3 → 2 IrCl(PPh3)3 + 4 C8H14

References

  1. ^ "Chlorobis(cyclooctene)iridium Dimer SDS". American Elements. Retrieved 2018-08-24.
  2. van der Ent, A.; Onderdelinden, A. L. (1973). "Chlorobis(cyclooctene)rhodium(I) and -Iridium(I) Complexes". Inorganic Syntheses. Vol. 14. pp. 92–95. doi:10.1002/9780470132456.ch18. ISBN 978-0-470-13174-9.
  3. Bennett, M. A.; Latten, J. L. (1989). "An Iridium(III) Complex Containing Cyclometallated Triphenylphosphine Formed by Isomerization of an Iridium(I) Triphenylphosphine Complex". Inorganic Syntheses. Vol. 26. pp. 200–203. doi:10.1002/9780470132579.ch35. ISBN 978-0-471-50485-6.
Iridium compounds
Iridium(0)
Iridium(I)
Organoiridium(I)
Iridium(II)
Iridium(III)
Organoiridium(III)
Iridium(IV)
Iridium(V)
Iridium(VI)
Iridium(VII)
Iridium(VIII/IX)
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