(Cymene)ruthenium dichloride dimer

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(cymene)ruthenium dichloride dimer
Names
Other names
Dichloro(p-cymene)ruthenium(II) dimer
Identifiers
3D model (
JSmol
)
ChemSpider
ECHA InfoCard
 100.103.371 Edit this at Wikidata
  • InChI=1S/2C10H14.4ClH.2Ru/c2*1-8(2)10-6-4-9(3)5-7-10;;;;;;/h2*4-8H,1-3H3;4*1H;;/q;;;;;;2*+2/p-4 checkY
    Key: LAXRNWSASWOFOT-UHFFFAOYSA-J checkY
  • InChI=1/2C10H14.4ClH.2Ru/c2*1-8(2)10-6-4-9(3)5-7-10;;;;;;/h2*4-8H,1-3H3;4*1H;;/q;;;;;;2*+2/p-4
    Key: LAXRNWSASWOFOT-XBHQNQODAM
  • [Ru+2].[Ru+2].[Cl-].[Cl-].[Cl-].[Cl-].c1cc(ccc1C(C)C)C.c1cc(ccc1C(C)C)C
  • Cc1ccc(cc1)C(C)C.Cc1ccc(cc1)C(C)C.[Cl-].[Cl-].[Cl-].[Cl-].[Ru+2].[Ru+2]
Properties
C20H28Cl4Ru2
Molar mass 612.38 g·mol−1
Appearance Red solid
Melting point 247 to 250 °C (477 to 482 °F; 520 to 523 K) (decomposes)
Slightly, with hydrolysis
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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(Cymene)ruthenium dichloride dimer is the

organometallic compound with the formula [(cymene)RuCl2]2. This red-coloured, diamagnetic solid is a reagent in organometallic chemistry and homogeneous catalysis. The complex is structurally similar to (benzene)ruthenium dichloride dimer
.

Preparation and reactions

The dimer is prepared by the reaction of the

arenes
:

[(cymene)RuCl2]2 + 2 C6Me6 → [(C6Me6)RuCl2]2 + 2 cymene

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

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

Such monomers adopt pseudo-octahedral

piano-stool structures
.

Precursor to catalysts

Treatment of [(cymene)RuCl2]2 with the chelating ligand Ts

catalyst for asymmetric transfer hydrogenation.[2]

[(cymene)RuCl2]2 is also used to prepare catalysts (by monomerization with

alcohols
towards nucleophilic attack.

It can also used to prepare other ruthenium—arene complexes.[4]

References

  1. ISBN 9780470132524
    .
  2. ^ Takao Ikariya; Shohei Hashiguchi; Kunihiko Murata; Ryōji Noyori (2005). "Preparation of Optically Active (R,R)-Hydrobenzoin from Benzoin or Benzil". Organic Syntheses: 10.
  3. doi:10.1002/adsc.200600638
  4. ISBN 978-3-13-112131-8
    .
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