(Benzene)ruthenium dichloride dimer

(Benzene)ruthenium dichloride dimer is the organoruthenium compound with the formula [(C₆H₆)RuCl₂]₂. This red-coloured, diamagnetic solid is a reagent in organometallic chemistry and homogeneous catalysis.

(benzene)ruthenium dichloride dimer

Names
Other names Dichloro(benzene)ruthenium(II) dimer, bis(η6-benzene)di-μ-chlorodichlorodiruthenium, (benzene)dichlororuthenium dimer, benzeneruthenium dichloride dimer, benzeneruthenium(II) chloride dimer
Identifiers
CAS Number	37366-09-9 Y
ECHA InfoCard	100.155.159
PubChem CID	10962144
CompTox Dashboard (EPA)	DTXSID40449898
Properties
Chemical formula	C12H12Cl4Ru2
Molar mass	500.17 g·mol−1
Appearance	Red-brown solid
Density	2.343 g/cm3
Melting point	decomposes
Solubility in water	Slightly, with hydrolysis
Hazards
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P271, P280, P302+P352, P304+P340, P305+P351+P338, P312, P321, P332+P313, P337+P313, P362, P403+P233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

Preparation, structure, and reactions

The dimer is prepared by the reaction of cyclohexadienes with hydrated ruthenium trichloride.^[1] As verified by X-ray crystallography, each Ru center is coordinated to three chloride ligands and a η⁶-benzene.^[2] The complex can be viewed as an edge-shared bioctahedral structure.

(Benzene)ruthenium dichloride dimer reacts with Lewis bases to give monometallic adducts:

[(C₆H₆)RuCl₂]₂ + 2 PPh₃ → 2 (C₆H₆)RuCl₂(PPh₃)

Related compounds

• (cymene)ruthenium dichloride dimer, a more soluble analogue of (benzene)ruthenium dichloride dimer.
• (mesitylene)ruthenium dichloride dimer, another more soluble derivative.^[3]