Chlorobis(cyclooctene)rhodium dimer

Chlorobis(cyclooctene)rhodium dimer
Identifiers
CAS Number	12279-09-3;
ECHA InfoCard	100.152.028
CompTox Dashboard (EPA)	DTXSID00693673 ;
Properties
Chemical formula	C32H56Cl2Rh2
Molar mass	717.50
Appearance	red-brown solid
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Chlorobis(cyclooctene)rhodium dimer is an organorhodium compound with the formula Rh₂Cl₂(C₈H₁₄)₄, where C₈H₁₄ is cis-cyclooctene. Sometimes abbreviated Rh₂Cl₂(coe)₄, it is a red-brown, air-sensitive solid that is a precursor to many other organorhodium compounds and catalysts.

The complex is prepared by treating an alcohol solution of hydrated rhodium trichloride with cyclooctene at room temperature.^[1] The coe ligands are easily displaced by other more basic ligands, more so than the diene ligands in the related complex cyclooctadiene rhodium chloride dimer.

References

^ Van der Ent, A.; Onderdelinden, A. L. "Chlorobis(cyclooctene)rhodium(I) and di-μ-chlorobis[bis(cryclooctene)iridium] (I) complexes" Inorganic Syntheses 1973, volume 14, pp. 92-5. doi:10.1002/9780470132456.ch18

[1] Van der Ent, A.; Onderdelinden, A. L. "Chlorobis(cyclooctene)rhodium(I) and di-μ-chlorobis[bis(cryclooctene)iridium] (I) complexes" Inorganic Syntheses 1973, volume 14, pp. 92-5. doi:10.1002/9780470132456.ch18

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