Chemistry:Chlorobis(cyclooctene)iridium dimer
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| Names | |
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| IUPAC name
Chlorobis(cyclooctene)iridium(I) dimer
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| Other names
Di-μ-chlorotetrakis(cyclooctene)diiridium(I), [Ir(coe)2Cl]2
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| Identifiers | |
3D model (JSmol)
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PubChem CID
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| Properties | |
| C32H56Cl2Ir2 | |
| Molar mass | 896.13 |
| Appearance | yellow solid |
| Melting point | 160-165 °C |
| Hazards | |
| GHS pictograms | 
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| GHS Signal word | Warning |
| H315, H319, H335[1] | |
| P261, P280, P305+351+338, P304+340, P321, P332+313, P362, P403+233, P405, P501[1] | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
| Infobox references | |
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.[2] 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:[3]
- Ir2Cl2(C8H14)4 + 6 PPh3 → 2 IrCl(PPh3)3 + 4 C8H14
References
- ↑ 1.0 1.1 "Chlorobis(cyclooctene)iridium Dimer SDS". https://www.americanelements.com/printpdf/chlorobis-cyclooctene-iridium-i-dimer-12246-51-4/sds. Retrieved 2018-08-24.
- ↑ van der Ent, A.; Onderdelinden, A. L. (1973). "Chlorobis(cyclooctene)rhodium(I) and -Iridium(I) Complexes". Inorganic Syntheses 14: 92–95. doi:10.1002/9780470132456.ch18.
- ↑ 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 26: 200–203. doi:10.1002/9780470132579.ch35.
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