(Cymene)ruthenium dichloride dimer is the organometallic compound with the

formula In science, a formula is a concise way of expressing information symbolically, as in a mathematical formula or a ''chemical formula''. The informal use of the term ''formula'' in science refers to the general construct of a relationship betwe ...

cymene)RuCl This red-coloured, diamagnetic solid is a

reagent In chemistry, a reagent ( ) or analytical reagent is a substance or compound added to a system to cause a chemical reaction, or test if one occurs. The terms ''reactant'' and ''reagent'' are often used interchangeably, but reactant specifies a ...

organometallic chemistry Organometallic chemistry is the study of organometallic compounds, chemical compounds containing at least one chemical bond between a carbon atom of an organic molecule and a metal, including alkali, alkaline earth, and transition metals, and so ...

and

homogeneous catalysis In chemistry, homogeneous catalysis is catalysis where the catalyst is in same phase as reactants, principally by a soluble catalyst in a solution. In contrast, heterogeneous catalysis describes processes where the catalysts and substrate are in d ...

. The complex is structurally similar to (benzene)ruthenium dichloride dimer.

Preparation and reactions

The dimer is prepared by the reaction of the

phellandrene Phellandrenes are organic compounds with the formula . They have a similar molecular structure and similar chemical properties. α-Phellandrene and β-phellandrene are cyclic monoterpenes and are double-bond isomers. In α-phellandrene, both dou ...

with hydrated ruthenium trichloride. At high temperatures, cymene)RuClexchanges with other arenes: : cymene)RuCl+ 2 CMe → CMe)RuCl+ 2 cymene (Cymene)ruthenium dichloride dimer reacts with Lewis bases to give monometallic

adduct In chemistry, an adduct (; alternatively, a contraction of "addition product") is a product of a direct addition of two or more distinct molecules, resulting in a single reaction product containing all atoms of all components. The resultant is ...

s: : cymene)RuCl+ 2 PPh → 2 (cymene)RuCl(PPh) Such monomers adopt pseudo-octahedral piano-stool structures.

Precursor to catalysts

Treatment of cymene)RuClwith the chelating ligand Ts DPENH gives (cymene)Ru(TsDPEN-H), a

catalyst Catalysis () is the increase in rate of a chemical reaction due to an added substance known as a catalyst (). Catalysts are not consumed by the reaction and remain unchanged after it. If the reaction is rapid and the catalyst recycles quick ...

for asymmetric transfer hydrogenation. cymene)RuClis also used to prepare catalysts (by monomerization with dppf) used in borrowing hydrogen catalysis, a catalytic reaction that is based on the activation of

alcohols In chemistry, an alcohol (), is a type of organic compound that carries at least one hydroxyl () functional group bound to a Saturated and unsaturated compounds, saturated carbon atom. Alcohols range from the simple, like methanol and ethanol ...

towards nucleophilic attack. It can also used to prepare other ruthenium—arene complexes.

References

{{DEFAULTSORT:Cymene ruthenium dichloride dimer Organoruthenium compounds Chloro complexes Dimers (chemistry) Half sandwich compounds Ruthenium(II) compounds