Diruthenium tetraacetate chloride

Diruthenium tetraacetate chloride is the coordination polymer with the formula {[Ru₂(O₂CCH₃)₄]Cl}_n. A red brown solid, the compound is obtained by the reduction of ruthenium trichloride in acetic acid.^[1] The compound has attracted much academic interest because it features a fractional metal-metal bond order of 2.5.^[2]

Diruthenium tetraacetate chloride

Names
IUPAC name Ruthenium(II,III) acetate chloride
Other names Tetrakis(mu-(acetato-O:O'))chlorodiruthenium
Identifiers
CAS Number	38833-34-0 Y
3D model (JSmol)	Interactive image
ChemSpider	64886095
EC Number	254-144-6
PubChem CID	76871777
InChI InChI=1S/4C2H4O2.ClH.2Ru/c4*1-2(3)4;;;/h4*1H3,(H,3,4);1H;;/q;;;;;;+1/p-1 Key: LLHUCACCCSUOKG-UHFFFAOYSA-M
SMILES CC(=O)O.CC(=O)O.CC(=O)O.CC(=O)O.Cl[Ru].[Ru]
Properties
Chemical formula	C8H12ClO8Ru2
Molar mass	473.77 g·mol−1
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

The [Ru₂(O₂CCH₃)₄]⁺ core adopts the Chinese lantern structure, with four acetate ligands spanning the Ru₂ center. The Ru-Ru distance is 228 pm.^[3][4] The [Ru₂(O₂CCH₃)₄]⁺ units are linked by bridging chloride ligands.