[Di­carbonyl(η⁵-cyclo­penta­dienyl)­iron(II)]-μ₂-1,3-propanediyl-[di­carbonyl(η⁵-cyclo­penta­dienyl)­ruthenium(II)]

The coordination of Fe and Ru in the title compound, [RuFe(C₃H₆)(C₅H₅)₂(CO)₄], is identical in its effectively tetrahedral form with that observed in closely analogous materials. However, partial [24.08 (17)%] disorder by interchange of Fe and Ru renders the bonds to Fe and Ru here apparently slightly longer and shorter, respectively, than they are in the analogues.

Key indicators

• Single-crystal X-ray study
• T = 100 K
• Mean [sigma](C-C) = 0.003 Å
• R factor = 0.024
• wR factor = 0.062
• Data-to-parameter ratio = 25.1

checkCIF results

No syntax errors found

ADDSYM reports no extra symmetry

General Notes



REFLT_03
         From the CIF: _diffrn_reflns_theta_max           31.71
         From the CIF: _reflns_number_total               5254
         Count of symmetry unique reflns         3183
         Completeness (_total/calc)            165.06%
         TEST3: Check Friedels for noncentro structure
         Estimate of Friedel pairs measured      2071
         Fraction of Friedel pairs measured     0.651
         Are heavy atom types Z>Si present          yes
          Please check that the estimate of the number of Friedel pairs is
          correct. If it is not, please give the correct count in the
          _publ_section_exptl_refinement section of the submitted CIF.

---

S1. Comment

This structure determination was undertaken in the context of an ongoing study of heterobimetallic compounds (Friedrich & Moss, 1993). The connectivity and atom labelling of the molecule of the title compound, (I), is shown in Fig. 1. The coordination of Fe and Ru in (I) is compared to that in the closely analogous (propane-1,3-diyl)-bis[dicarbonyl(η-5-cyclopentadienyl)iron], (II) (PRCFEC; Pope et al., 1976) and (pentane-1,5-diyl)-bis[dicarbonyl(η-5-cyclopentadienyl)ruthenium], (III) (JEHVUN; Finch et al., 1989) in Table 1. There it is clear that whereas the effectively tetrahedral coordination of the metal atoms is very similar throughout in (I) the bonds to Fe tend to be slightly longer than in (II) and the bonds to Ru somewhat shorter than they are in (III). In a previous structural model where twin refinement, but no other form of disorder, had been introduced a concern, not noted in the checkCIF validation report obtained at that time, was the disparity between the U_eq values for Fe1 and Ru1 of 0.0038 (1) and 0.0168 (1) Ų, respectively. This prompted the rerefinement presented here in which disorder by partial replacement of Ru by Fe and vice versa was introduced and twin refinement abandoned. Precisely this form of disorder is found but in a much more extreme form in the structure of the wholly analogous [dicarbonyl(η⁵-cyclopentadienyl)iron(II)]-µ²1,6-n-hexandiyl- [dicarbonyl(η⁵-cyclopentadienyl)ruthenium(II)] (Archer et al., 1991). The disordered model has proved to be technically superior on every count, i.e. giving much better R factors, much lower residual electron densities, lower s.u. values and a satisfactory estimate of the Flack x parameter with no indication of the need for twin refinement. Clearly it also accounts for the bond-length differences between (I) and (II) and (III).

The C—C and C—O bonds in (I) are unexceptional and are not discussed further. Selected torsion angles are given in Table 2. In the cell of (I) (Fig. 2), aside from the weak intermolecular interactions given in Table 3, the packing of the molecules involves only van der Waals contacts.

S2. Experimental

Compound (I) was prepared according to a reported procedure (Archer et al., 1991) and crystals were grown by a slow diffusion, over several days, of a threefold excess of hexane into a concentrated solution of (I) in dichloromethane held at 263 K.

S3. Refinement

H atoms were placed in calculated positions, with C—H = 0.99 and 0.95 Å for methylene and cyclopentadienyl H atoms, respectively. All H atoms were refined with a riding model, with U_iso = 1.2U_eq of the C atom to which they are attached. The extent of disorder of Fe and Ru was established by refinement of a free variable occupancy factor, x [final refined value 0.7592 (17)], for sites of the form Fe_x/Ru_{1 - x} and Ru_x/Fe_{1 - x} with SHELXL97 EXYZ and EADP instructions rigorously enforcing identical atomic coordinates and displacement parameters for both atoms in the site.

Computing details

Data collection: CrysAlis CCD (Oxford Diffraction, 2001); cell refinement: CrysAlis CCD; data reduction: CrysAlis RED (Oxford Diffraction, 2001); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2003).

Figures

	Fig. 1. The molecule of (I), showing the atom-labelling scheme. Non-H atoms are shown as 50% probability displacement ellipsoids and H atoms as spheres of arbitrary radius. Metal–cyclopentadienyl bonds are represented by dashed lines joining the centroid of the ligand ring and the metal atom.
	Fig. 2. The cell of (I). Non-H atoms are shown as 50% probability displacement ellipsoids and H atoms have been omitted for clarity. Metal–cyclopentadienyl bonds are represented by dashed lines joining the centroid of the ligand ring and the metal atom. [Symmetry codes: (i) 1/2 - x, -y, 1/2 + z; (ii) -x, 1/2 + y, 1/2 - z; (iii) 1/2 + x, 1/2 - y, -z.]

[Dicarbonyl](eta-5-cyclopentadienyl)iron(II)]-mu-2–1,3-propandiyl- [dicarbonyl](eta-5-cyclopentadienyl)ruthenium(II)]

Crystal data

[RuFe(C3H6)(C5H5)2(CO)4]	F(000) = 880
Mr = 441.22	Dx = 1.772 Mg m^−3
Orthorhombic, P212121	Mo Kα radiation, λ = 0.71073 Å
Hall symbol: P 2ac 2ab	Cell parameters from 15516 reflections
a = 6.834 (3) Å	θ = 4.1–31.7°
b = 11.358 (4) Å	µ = 1.81 mm^−1
c = 21.303 (9) Å	T = 100 K
V = 1653.6 (12) Å^3	Plate, yellow
Z = 4	0.40 × 0.20 × 0.20 mm

Data collection

Oxford Diffraction Xcalibur 2 CCD area-detector diffractometer	5017 reflections with I > 2σ(I)
Radiation source: fine-focus sealed tube	Rint = 0.053
Graphite monochromator	θmax = 31.7°, θmin = 4.1°
ω–2θ scans	h = −9→10
15516 measured reflections	k = 0→16
5254 independent reflections	l = 0→30

Refinement

Refinement on F^2	Secondary atom site location: difference Fourier map
Least-squares matrix: full	Hydrogen site location: inferred from neighbouring sites
R[F^2 > 2σ(F^2)] = 0.025	H-atom parameters constrained
wR(F^2) = 0.062	w = 1/[σ^2(Fo^2) + (0.0308P)^2 + 0.3168P] where P = (Fo^2 + 2Fc^2)/3
S = 1.11	(Δ/σ)max = 0.002
5254 reflections	Δρmax = 0.54 e Å^−3
209 parameters	Δρmin = −0.81 e Å^−3
0 restraints	Absolute structure: Flack (1983), 2204 Friedel pairs
Primary atom site location: structure-invariant direct methods	Absolute structure parameter: 0.040 (18)

Special details

Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.

Least-squares planes (x,y,z in crystal coordinates) and deviations from them (* indicates atom used to define plane)

5.6450 (0.0049) x - 4.7849 (0.0115) y + 7.9775 (0.0225) z = 6.8563 (0.0087)

* -0.0049 (0.0013) C1_a * 0.0022 (0.0014) C2_a * 0.0014 (0.0014) C3_a * -0.0044 (0.0014) C4_a * 0.0058 (0.0013) C5_a -1.7881 (0.0013) Fe1_a

Rms deviation of fitted atoms = 0.0041

6.6465 (0.0035) x + 0.1866 (0.0143) y + 4.9431 (0.0256) z = 6.8644 (0.0099)

Angle to previous plane (with approximate e.s.d.) = 27.95 (0.10)

* 0.0065 (0.0014) C1A_a * 0.0004 (0.0016) C2A_a * -0.0074 (0.0016) C3A_a * 0.0115 (0.0016) C4A_a * -0.0110 (0.0015) C5A_a -1.8805 (0.0013) Ru1_a

Rms deviation of fitted atoms = 0.0084

Refinement. Refinement of F² against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F², conventional R-factors R are based on F, with F set to zero for negative F². The threshold expression of F² > σ(F²) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F² are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Ų)

	x	y	z	Uiso*/Ueq	Occ. (<1)
Fe1	0.21839 (3)	−0.13426 (2)	0.400252 (10)	0.01211 (8)	0.7592 (17)
Ru1A	0.21839 (3)	−0.13426 (2)	0.400252 (10)	0.01211 (8)	0.2408 (17)
C1	0.4699 (3)	−0.11100 (18)	0.45976 (9)	0.0173 (4)
H1	0.4961	−0.0405	0.4822	0.021*
C2	0.3566 (3)	−0.20921 (19)	0.48189 (10)	0.0179 (4)
H2	0.2957	−0.2155	0.5218	0.021*
C3	0.3520 (3)	−0.29428 (19)	0.43401 (11)	0.0196 (4)
H3	0.2871	−0.3681	0.4360	0.023*
C4	0.4614 (3)	−0.25101 (19)	0.38186 (10)	0.0206 (4)
H4	0.4811	−0.2906	0.3431	0.025*
C5	0.5355 (3)	−0.13848 (19)	0.39818 (10)	0.0185 (4)
H5	0.6152	−0.0899	0.3724	0.022*
C6	0.0415 (3)	−0.04504 (19)	0.43712 (9)	0.0178 (4)
O1	−0.0754 (3)	0.01541 (16)	0.45860 (8)	0.0268 (4)
C7	0.0424 (3)	−0.20557 (19)	0.35258 (10)	0.0195 (4)
O2	−0.0727 (3)	−0.25321 (16)	0.32244 (9)	0.0285 (4)
C8	0.2395 (3)	0.00338 (18)	0.33556 (9)	0.0152 (4)
H8A	0.3261	−0.0214	0.3007	0.018*
H8B	0.1083	0.0189	0.3177	0.018*
C9	0.3194 (3)	0.11766 (19)	0.36395 (9)	0.0161 (4)
H9A	0.2270	0.1473	0.3961	0.019*
H9B	0.4461	0.1016	0.3848	0.019*
Ru1	0.48086 (2)	0.369182 (15)	0.347747 (8)	0.01301 (6)	0.7592 (17)
Fe1A	0.48086 (2)	0.369182 (15)	0.347747 (8)	0.01301 (6)	0.2408 (17)
C1A	0.7669 (3)	0.46428 (19)	0.34127 (11)	0.0216 (4)
H1A	0.7823	0.5377	0.3205	0.026*
C2A	0.7190 (4)	0.4481 (2)	0.40503 (12)	0.0261 (5)
H2A	0.6954	0.5088	0.4348	0.031*
C3A	0.7123 (4)	0.3247 (3)	0.41716 (11)	0.0265 (5)
H3A	0.6820	0.2888	0.4562	0.032*
C4A	0.7584 (3)	0.2657 (2)	0.36119 (11)	0.0220 (5)
H4A	0.7681	0.1828	0.3562	0.026*
C5A	0.7882 (3)	0.3505 (2)	0.31342 (10)	0.0213 (4)
H5A	0.8170	0.3347	0.2706	0.026*
C6A	0.2762 (3)	0.38190 (19)	0.40304 (10)	0.0193 (4)
O1A	0.1544 (2)	0.38925 (17)	0.43959 (8)	0.0281 (4)
C7A	0.3455 (4)	0.4477 (2)	0.28598 (11)	0.0222 (4)
O2A	0.2614 (3)	0.49664 (18)	0.24772 (9)	0.0331 (4)
C8A	0.3480 (3)	0.21119 (19)	0.31342 (9)	0.0160 (4)
H8C	0.2191	0.2309	0.2950	0.019*
H8D	0.4308	0.1782	0.2796	0.019*

Atomic displacement parameters (Ų)

	U^11	U^22	U^33	U^12	U^13	U^23
Fe1	0.01250 (12)	0.01073 (11)	0.01309 (11)	−0.00212 (9)	−0.00027 (7)	−0.00059 (9)
Ru1A	0.01250 (12)	0.01073 (11)	0.01309 (11)	−0.00212 (9)	−0.00027 (7)	−0.00059 (9)
C1	0.0157 (8)	0.0151 (9)	0.0209 (9)	−0.0001 (7)	−0.0043 (7)	0.0002 (7)
C2	0.0186 (10)	0.0170 (9)	0.0182 (9)	0.0011 (8)	−0.0025 (7)	0.0039 (7)
C3	0.0200 (10)	0.0125 (9)	0.0262 (11)	0.0020 (8)	−0.0011 (8)	0.0014 (7)
C4	0.0186 (10)	0.0180 (10)	0.0251 (10)	0.0041 (8)	0.0016 (8)	−0.0031 (7)
C5	0.0142 (8)	0.0181 (9)	0.0234 (9)	0.0006 (8)	0.0002 (7)	0.0026 (8)
C6	0.0200 (10)	0.0201 (9)	0.0133 (8)	−0.0070 (8)	−0.0005 (7)	0.0011 (7)
O1	0.0274 (9)	0.0256 (9)	0.0274 (9)	−0.0011 (7)	0.0075 (7)	−0.0026 (7)
C7	0.0253 (10)	0.0163 (9)	0.0169 (9)	−0.0042 (8)	0.0046 (8)	0.0001 (7)
O2	0.0317 (10)	0.0266 (9)	0.0273 (8)	−0.0121 (7)	−0.0028 (7)	−0.0035 (7)
C8	0.0174 (9)	0.0136 (8)	0.0147 (9)	−0.0036 (7)	−0.0010 (7)	−0.0009 (6)
C9	0.0197 (9)	0.0148 (9)	0.0138 (8)	−0.0032 (8)	−0.0007 (6)	0.0008 (7)
Ru1	0.01264 (8)	0.01049 (8)	0.01590 (8)	−0.00021 (6)	−0.00059 (6)	0.00026 (6)
Fe1A	0.01264 (8)	0.01049 (8)	0.01590 (8)	−0.00021 (6)	−0.00059 (6)	0.00026 (6)
C1A	0.0181 (10)	0.0178 (9)	0.0289 (11)	−0.0041 (8)	−0.0008 (9)	0.0041 (8)
C2A	0.0213 (11)	0.0300 (12)	0.0270 (11)	−0.0024 (9)	−0.0034 (10)	−0.0083 (10)
C3A	0.0182 (11)	0.0415 (14)	0.0198 (10)	−0.0029 (10)	−0.0020 (8)	0.0096 (9)
C4A	0.0145 (10)	0.0195 (10)	0.0320 (12)	0.0019 (8)	−0.0008 (9)	0.0046 (8)
C5A	0.0187 (10)	0.0233 (11)	0.0220 (10)	−0.0002 (8)	0.0039 (8)	0.0024 (8)
C6A	0.0188 (9)	0.0166 (10)	0.0225 (9)	−0.0012 (8)	−0.0057 (8)	−0.0052 (8)
O1A	0.0189 (8)	0.0347 (10)	0.0309 (9)	−0.0005 (7)	0.0023 (6)	−0.0119 (7)
C7A	0.0236 (11)	0.0170 (10)	0.0260 (11)	−0.0050 (8)	0.0001 (9)	0.0022 (8)
O2A	0.0327 (10)	0.0279 (9)	0.0385 (10)	0.0013 (8)	−0.0051 (8)	0.0125 (8)
C8A	0.0186 (10)	0.0142 (9)	0.0152 (9)	0.0003 (7)	−0.0020 (7)	0.0005 (7)

Geometric parameters (Å, º)

Fe1—C6	1.762 (2)	C9—H9A	0.9900
Fe1—C7	1.770 (2)	C9—H9B	0.9900
Fe1—C8	2.089 (2)	Ru1—C6A	1.834 (2)
Fe1—C1	2.152 (2)	Ru1—C7A	1.839 (2)
Fe1—C2	2.154 (2)	Ru1—C8A	2.140 (2)
Fe1—C3	2.157 (2)	Ru1—C2A	2.223 (2)
Fe1—C4	2.161 (2)	Ru1—C3A	2.223 (3)
Fe1—C5	2.168 (2)	Ru1—C5A	2.234 (2)
C1—C5	1.421 (3)	Ru1—C1A	2.238 (2)
C1—C2	1.437 (3)	Ru1—C4A	2.250 (2)
C1—H1	0.9500	C1A—C2A	1.409 (3)
C2—C3	1.405 (3)	C1A—C5A	1.429 (3)
C2—H2	0.9500	C1A—H1A	0.9500
C3—C4	1.426 (3)	C2A—C3A	1.426 (4)
C3—H3	0.9500	C2A—H2A	0.9500
C4—C5	1.418 (3)	C3A—C4A	1.404 (4)
C4—H4	0.9500	C3A—H3A	0.9500
C5—H5	0.9500	C4A—C5A	1.416 (3)
C6—O1	1.148 (3)	C4A—H4A	0.9500
C7—O2	1.151 (3)	C5A—H5A	0.9500
C8—C9	1.533 (3)	C6A—O1A	1.143 (3)
C8—H8A	0.9900	C7A—O2A	1.142 (3)
C8—H8B	0.9900	C8A—H8C	0.9900
C9—C8A	1.525 (3)	C8A—H8D	0.9900
C6—Fe1—C7	93.02 (11)	C8A—C9—H9B	109.5
C6—Fe1—C8	84.90 (9)	C8—C9—H9B	109.5
C7—Fe1—C8	90.62 (9)	H9A—C9—H9B	108.0
C6—Fe1—C1	102.41 (9)	C6A—Ru1—C7A	92.17 (11)
C7—Fe1—C1	159.51 (9)	C6A—Ru1—C8A	87.82 (9)
C8—Fe1—C1	103.98 (8)	C7A—Ru1—C8A	87.07 (9)
C6—Fe1—C2	99.69 (9)	C6A—Ru1—C2A	100.02 (10)
C7—Fe1—C2	125.47 (9)	C7A—Ru1—C2A	124.43 (11)
C8—Fe1—C2	142.93 (8)	C8A—Ru1—C2A	146.76 (9)
C1—Fe1—C2	38.99 (8)	C6A—Ru1—C3A	97.65 (10)
C6—Fe1—C3	128.78 (9)	C7A—Ru1—C3A	160.68 (10)
C7—Fe1—C3	95.36 (10)	C8A—Ru1—C3A	109.80 (10)
C8—Fe1—C3	145.19 (9)	C2A—Ru1—C3A	37.40 (10)
C1—Fe1—C3	64.46 (8)	C6A—Ru1—C5A	159.15 (9)
C2—Fe1—C3	38.04 (8)	C7A—Ru1—C5A	106.53 (10)
C6—Fe1—C4	163.93 (9)	C8A—Ru1—C5A	101.98 (9)
C7—Fe1—C4	97.89 (10)	C2A—Ru1—C5A	61.94 (9)
C8—Fe1—C4	106.64 (9)	C3A—Ru1—C5A	61.79 (9)
C1—Fe1—C4	64.43 (9)	C6A—Ru1—C1A	131.89 (9)
C2—Fe1—C4	64.34 (9)	C7A—Ru1—C1A	99.27 (10)
C3—Fe1—C4	38.57 (9)	C8A—Ru1—C1A	138.97 (8)
C6—Fe1—C5	135.03 (9)	C2A—Ru1—C1A	36.83 (9)
C7—Fe1—C5	131.09 (9)	C3A—Ru1—C1A	61.91 (9)
C8—Fe1—C5	86.21 (8)	C5A—Ru1—C1A	37.27 (8)
C1—Fe1—C5	38.40 (8)	C6A—Ru1—C4A	127.03 (9)
C2—Fe1—C5	64.49 (8)	C7A—Ru1—C4A	140.22 (10)
C3—Fe1—C5	64.21 (9)	C8A—Ru1—C4A	87.90 (9)
C4—Fe1—C5	38.24 (8)	C2A—Ru1—C4A	61.53 (10)
C5—C1—C2	107.60 (18)	C3A—Ru1—C4A	36.57 (9)
C5—C1—Fe1	71.42 (12)	C5A—Ru1—C4A	36.81 (8)
C2—C1—Fe1	70.60 (12)	C1A—Ru1—C4A	61.53 (9)
C5—C1—H1	126.2	C2A—C1A—C5A	107.8 (2)
C2—C1—H1	126.2	C2A—C1A—Ru1	71.02 (13)
Fe1—C1—H1	123.4	C5A—C1A—Ru1	71.22 (12)
C3—C2—C1	107.92 (19)	C2A—C1A—H1A	126.1
C3—C2—Fe1	71.10 (13)	C5A—C1A—H1A	126.1
C1—C2—Fe1	70.41 (12)	Ru1—C1A—H1A	123.3
C3—C2—H2	126.0	C1A—C2A—C3A	108.1 (2)
C1—C2—H2	126.0	C1A—C2A—Ru1	72.15 (13)
Fe1—C2—H2	124.1	C3A—C2A—Ru1	71.31 (14)
C2—C3—C4	108.5 (2)	C1A—C2A—H2A	126.0
C2—C3—Fe1	70.86 (12)	C3A—C2A—H2A	126.0
C4—C3—Fe1	70.85 (13)	Ru1—C2A—H2A	122.3
C2—C3—H3	125.8	C4A—C3A—C2A	107.9 (2)
C4—C3—H3	125.8	C4A—C3A—Ru1	72.73 (14)
Fe1—C3—H3	124.1	C2A—C3A—Ru1	71.29 (15)
C5—C4—C3	107.86 (19)	C4A—C3A—H3A	126.0
C5—C4—Fe1	71.16 (12)	C2A—C3A—H3A	126.0
C3—C4—Fe1	70.58 (13)	Ru1—C3A—H3A	121.7
C5—C4—H4	126.1	C3A—C4A—C5A	108.5 (2)
C3—C4—H4	126.1	C3A—C4A—Ru1	70.70 (14)
Fe1—C4—H4	123.8	C5A—C4A—Ru1	70.99 (13)
C4—C5—C1	108.15 (18)	C3A—C4A—H4A	125.7
C4—C5—Fe1	70.60 (12)	C5A—C4A—H4A	125.7
C1—C5—Fe1	70.18 (12)	Ru1—C4A—H4A	124.2
C4—C5—H5	125.9	C4A—C5A—C1A	107.6 (2)
C1—C5—H5	125.9	C4A—C5A—Ru1	72.19 (13)
Fe1—C5—H5	124.9	C1A—C5A—Ru1	71.51 (13)
O1—C6—Fe1	176.95 (19)	C4A—C5A—H5A	126.2
O2—C7—Fe1	178.8 (2)	C1A—C5A—H5A	126.2
C9—C8—Fe1	113.45 (12)	Ru1—C5A—H5A	121.8
C9—C8—H8A	108.9	O1A—C6A—Ru1	177.00 (19)
Fe1—C8—H8A	108.9	O2A—C7A—Ru1	179.87 (16)
C9—C8—H8B	108.9	C9—C8A—Ru1	113.41 (13)
Fe1—C8—H8B	108.9	C9—C8A—H8C	108.9
H8A—C8—H8B	107.7	Ru1—C8A—H8C	108.9
C8A—C9—C8	110.91 (16)	C9—C8A—H8D	108.9
C8A—C9—H9A	109.5	Ru1—C8A—H8D	108.9
C8—C9—H9A	109.5	H8C—C8A—H8D	107.7
Fe1—C8—C9—C8A	175.08 (14)	C2—C3—C4—C5	0.6 (3)
C6—Fe1—C8—C9	65.20 (16)	C3—C4—C5—C1	−1.0 (2)
C7—Fe1—C8—C9	158.18 (16)	C4—C5—C1—C2	1.0 (2)
Ru1—C8A—C9—C8	−175.36 (14)	C5A—C1A—C2A—C3A	0.6 (3)
C6A—Ru1—C8A—C9	−58.35 (16)	C1A—C2A—C3A—C4A	0.8 (3)
C7A—Ru1—C8A—C9	−150.64 (17)	C2A—C3A—C4A—C5A	−1.8 (3)
C5—C1—C2—C3	−0.7 (2)	C3A—C4A—C5A—C1A	2.1 (3)
C1—C2—C3—C4	0.1 (3)	C4A—C5A—C1A—C2A	−1.7 (3)