Dichlorido(η6-p-cymene)(ethoxydiphenylphosphane)ruthenium(II)

The title compound, [RuCl2(C10H14)(C14H15OP)], is an RuII complex in which an η6-p-cymene ligand, two chloride anions and the P atom of an ethoxydiphenylphosphane ligand form a piano-stool coordination environment about the central RuII atom.

The title compound, [RuCl 2 (C 10 H 14 )(C 14 H 15 OP)], is an Ru II complex in which an 6 -p-cymene ligand, two chloride anions and the P atom of an ethoxydiphenylphosphane ligand form a piano-stool coordination environment about the central Ru II atom. 378 parameters All H-atom parameters refined Á max = 0.50 e Å À3 Á min = À0.47 e Å À3 Table 1 Selected geometric parameters (Å , ) for the title compound and related compounds.
The structure of complex 1 reported here adopts the classic piano stool structure with a pseudo-tetrahedral arrangement of the p-cymene, chloride anions and the phosphane about the ruthenium metal center. The bond lengths and angles about the Ru core compare well with 2 (Albertin, et al., 2010) and 3 (Elsegood, et al., 2006), which have been investigated previously ( Table 1). The average Ru -C distance is 2.217 (3) Å, which is very similar to the previously reported Ru -C distances of 2.218 (4) Å and 2.218 (2) Å for 2 and 3, respectively. The Ru -C bonds trans to the phosphane are lengthened, as has been observed previously (Elsegood, et al., 2006), where Ru -C2 (2.228 (3) Å) and Ru -C3 (2.242 (2) Å) are longer than the other Ru -C bonds (average length 2.208 (3) Å). A comparison of the sum of the P -Ru -Cl1, P -Ru -Cl2, and Cl1 -Ru -Cl2 angles between 1 -3 indicates that, as expected, 1 is more sterically hindered than 2 and less hindered than 3 (Table 1).

Experimental
The title compound was prepared following literature procedures (Albertin, et al., 2010). The red solid was dissolved in THF under a nitrogen atmosphere, and single crystals were obtained by slow evaporation of THF.

Refinement
H atoms were found on the residual density and refined with isotropic thermal parameters.

Dichlorido(η 6 -p-cymene)(ethoxydiphenylphosphane)ruthenium(II)
Crystal data Refinement. Refinement of F 2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F 2 , conventional R-factors R are based on F, with F set to zero for negative F 2 . The threshold expression of F 2 > σ(F 2 ) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F 2 are statistically about twice as large as those based on F, and Rfactors based on ALL data will be even larger.