Ruthenium(II) chloride

Ruthenium(II) chloride is an inorganic compound, a metal salt of ruthenium and hydrochloric acid with the formula RuCl
₂.^[1][2]

Ruthenium(II) chloride

Names
Other names Ruthenium dichloride, dichlororuthenium
Identifiers
CAS Number	13465-51-5
3D model (JSmol)	Interactive image
ChemSpider	132403
PubChem CID	150195
InChI InChI=1S/2ClH.Ru/h2*1H;/q;;+2/p-2 Key: DHCWLIOIJZJFJE-UHFFFAOYSA-L
SMILES Cl[Ru]Cl
Properties
Chemical formula	Cl2Ru
Molar mass	171.97 g·mol−1
Appearance	brown crystals
Solubility in water	Poorly soluble
Related compounds
Related compounds	Osmium(II) chloride, iridium(II) chloride, platinum(II) chloride
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

Synthesis

• Reaction of chlorine and ruthenium at 250 °C:^[3]

Ru + Cl₂ → RuCl₂

• Reaction of ruthenium trichloride with hydrogen in ethanol in presence of platinum black and hydrogen chloride:

2RuCl₃ + H₂ → 2RuCl₂ + 2HCl

Physical properties

Ruthenium(II) chloride forms brown crystals.

Ruthenium(II) chloride is poorly soluble in cold water, but is soluble in ethanol.

Chemical properties

Ruthenium(II) chloride can form complexes with aromatic hydrocarbons.^[4]

The compound can be reduced to elemental ruthenium by hydrogen.