metal-organic compounds
Bis(2,2′-bipyridine)(pyridin-2-olato)ruthenium(II) hexafluoridophosphate benzene hemisolvate
aDepartment of Chemistry, Faculty of Science, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan
*Correspondence e-mail: thama@fukuoka-u.ac.jp
In the title compound, [Ru(C5H4NO)(C10H8N2)2]PF6·0.5C6H6, the Ru2+ cation has a distorted octahedral RuN5O coordination environment. This complex is more distorted than the closely related ruthenium complex containing a pyridine-2-thiolate ligand [Santra et al. (1997). J. Chem. Soc. Dalton Trans. pp. 1387–1393]. The distortion is caused by the difference in size between the O and S atoms. The benzene solvent molecule is situated on a twofold rotation axis.
Related literature
For the Ru–(pyridine-2-thiolate) complex, see: Santra et al. (1997). For similar Ru–(pyridin-2-olate) complexes, see: Clegg et al. (1980); Cotton & Yokochi (1998). For an Ru–bipyridine complex, see: Holligan et al. (1992).
Experimental
Crystal data
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Refinement
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Data collection: RAPID-AUTO (Rigaku, 2002); cell RAPID-AUTO; data reduction: RAPID-AUTO; program(s) used to solve structure: SIR2004 (Burla et al., 2005); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Yadokari-XG (Wakita, 2001; Kabuto et al., 2009) and ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: Yadokari-XG and publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S1600536811045454/yk2024sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811045454/yk2024Isup2.hkl
A mixture of [Ru(bpy)2Cl2].2H2O (0.30 g, 0.58 mmol) and 2-hydroxypyridine (0.30 g, 3.2 mmol) in 90 ml ethanol was refluxed. After 1 h, NaOH (0.60 g, 15 mmol) in H2O (45 ml) was added, and the mixture was refluxed again for 2 h. After cooling to room temperature, the mixture was concentrated to ca 10 ml under reduced pressure. The precipitates were collected by filtration and were washed with a small amount of H2O. The precipitates and KPF6 (1.12 g) in acetone/methanol (20 ml/20 ml) were evaporated to dryness. 50 ml CHCl3 was added to the residium, and the mixture was washed five times with 20 ml H2O. The organic layer was dried with Na2SO4 and was evaporated to dryness. The crude product was recrystallized by vapor diffusion of benzene into an acetone solution at room temperature. Single crystals suitable for single-crystal X-ray analysis were obtained after 1 week.
1H NMR spectrum showed that this complex contains a benzene molecule as a crystallization solvent (δ = 7.40 ppm in CD3CN). The C atoms of benzene molecule (C26–C29) were refined isotropically, and all other non-hydrogen atoms were refined anisotropically. Bond-length restraints of 1.40 (2) Å were applied to all C—C bonds of the benzene, but were not refined except for C27–C28. The H atoms of benzene molecule were not discernible from difference Fourier maps and hence were not included in the final Other H atoms were placed in calculated positions and were constrained to ride on their parent atoms, with C–H distances of 0.93 Å and with Uiso(H) = 1.2 Ueq(C). The highest residual peak was 0.79 Å from Ru1 atom, and the deepest residual hole was 0.61 Å from C28 atom.
Polypyridine ruthenium complexes have been attracted the interest of researchers for their electrochemistry and
and also their potential applications as molecular devices. Santra et al. (1997) have reported two ruthenium complexes with pyridine-2-thiolate (2-pyS) or pyridin-2-olate (2-pyO). They have revealed the of [RuII(bpy)2(2-pyS)]ClO4 (bpy = 2,2'-bipyridine) complex (1), but X-ray structure study has not been carried out for the 2-pyO complex. Here, we report the of [RuII(bpy)2(2-pyO)](PF6)(C6H6)0.5 (2) and discuss the structural difference between them.The
of 2 is shown in Fig. 1. Bond lengths of Ru–O and Ru–N(2-pyO) in 2 are 2.146 (3) and 2.073 (3) Å, respectively. Comparing the bond lengths and that of six-coordinated ruthenium complexes with bidentate 2-pyO derivatives, the Ru–O bond length lies within the range of the reported distances, but Ru–N(2-pyO) is a little shorter than they. For example, in Ru(PPh3)2(6-methylpyridin-2-olate)2 (Clegg et al., (1980), Ru–O and Ru–N(2-pyO) lengths are 2.151 (4) and 2.0919 (5) Å, respectively. In [Ru(PMe3)4(6-chloropyridin-2-olate)]CF3SO3 (Cotton et al., (1998), Ru–O and Ru–N(2-pyO) lengths are 2.184 (3) and 2.213 (6) Å, respectively. Average Ru–N(bpy) length in 2 is ca 2.04 Å, which is typical length for Ru-bpy complexes (Holligan et al., (1992).The compound 2 has distorted octahedral geometry on Ru–N5O1 coordination environment.
of 1 is also distorted; however, the distortion of the 2-pyO complex is much more than that of the 2-pyS complex. For example, N1–Ru1–O1 bite angle of 2 is 62.79 (12)° which is steeper than N(2-pyS)–Ru–S(2-pyS) bite angle in 1 (68.6 (2)°). O1–Ru1–N3 and N1–Ru1–N4 angles are 165.07 (11)° and 165.81 (12)°, respectively, that are also steeper than corresponding angles in 1 (167.3 (2)°, 170.1 (3)°) On the other hands, N(bpy)–Ru–N(bpy) angles and Ru–N(bpy) distances in these complexes are almost equal (the average N(bpy)–Ru–N(bpy) bidentate angle: 78.9° (1), 79.36° (2); the trans-N(bpy)–Ru–N(bpy) angle: 173.6 (3)° (1), 172.74 (12)° (2); the average Ru–N(bpy) distance: 2.05 Å (1), 2.04 Å (2)) The equality shows that the difference in the degree of distortion is caused by the distinction between the N,S- and N,O-chelating ligands. Bond lengths of Ru–N(2-pyO) (2.073 (3) Å) and Ru–N(2-pyS) (2.060 (7) Å) are almost same, but the Ru–O bond length (2.146 (3) Å) is shorter than the Ru–S bond length (2.434 (3) Å). Due to the smaller size of O atom with respect to the S atom, the short Ru–O bond would make 2-pyO ligand tilt up to horizontal.For the Ru–(pyridine-2-thiolate) complex, see: Santra et al. (1997). For similar Ru–(pyridin-2-olate) complexes, see: Clegg et al. (1980); Cotton et al. (1998). For an Ru–bpy complex, see: Holligan et al. (1992).
Data collection: RAPID-AUTO (Rigaku, 2002); cell
RAPID-AUTO (Rigaku, 2002); data reduction: RAPID-AUTO (Rigaku, 2002); program(s) used to solve structure: SIR2004 (Burla et al., 2005); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: Yadokari-XG (Wakita, 2001; Kabuto et al., 2009) and ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: Yadokari-XG (Wakita, 2001; Kabuto et al., 2009) and publCIF (Westrip, 2010).Fig. 1. ORTEP drawing for 2 showing 50% probability displacement ellipsoids and arbitrary spheres for H atoms. Symmetry codes: (i) -x + 1, y, -z + 1/2 |
[Ru(C5H4NO)(C10H8N2)2]PF6·0.5C6H6 | F(000) = 2752 |
Mr = 688.53 | Dx = 1.576 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71075 Å |
Hall symbol: -C 2yc | Cell parameters from 24054 reflections |
a = 21.4180 (4) Å | θ = 3.0–27.6° |
b = 17.5316 (4) Å | µ = 0.67 mm−1 |
c = 16.8375 (3) Å | T = 200 K |
β = 113.3866 (7)° | Block, black |
V = 5802.9 (2) Å3 | 0.26 × 0.22 × 0.10 mm |
Z = 8 |
Rigaku R-AXIS RAPID diffractometer | 6068 reflections with I > 2σ(I) |
ω scans | Rint = 0.026 |
Absorption correction: multi-scan (ABSCOR; Rigaku, 1995)) | θmax = 27.5°, θmin = 3.0° |
Tmin = 0.846, Tmax = 0.937 | h = −25→27 |
28444 measured reflections | k = −22→22 |
6649 independent reflections | l = −21→21 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.047 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.155 | H-atom parameters constrained |
S = 1.14 | w = 1/[σ2(Fo2) + (0.0839P)2 + 20.9991P] where P = (Fo2 + 2Fc2)/3 |
6649 reflections | (Δ/σ)max = 0.001 |
364 parameters | Δρmax = 2.15 e Å−3 |
3 restraints | Δρmin = −0.52 e Å−3 |
[Ru(C5H4NO)(C10H8N2)2]PF6·0.5C6H6 | V = 5802.9 (2) Å3 |
Mr = 688.53 | Z = 8 |
Monoclinic, C2/c | Mo Kα radiation |
a = 21.4180 (4) Å | µ = 0.67 mm−1 |
b = 17.5316 (4) Å | T = 200 K |
c = 16.8375 (3) Å | 0.26 × 0.22 × 0.10 mm |
β = 113.3866 (7)° |
Rigaku R-AXIS RAPID diffractometer | 6649 independent reflections |
Absorption correction: multi-scan (ABSCOR; Rigaku, 1995)) | 6068 reflections with I > 2σ(I) |
Tmin = 0.846, Tmax = 0.937 | Rint = 0.026 |
28444 measured reflections |
R[F2 > 2σ(F2)] = 0.047 | 3 restraints |
wR(F2) = 0.155 | H-atom parameters constrained |
S = 1.14 | w = 1/[σ2(Fo2) + (0.0839P)2 + 20.9991P] where P = (Fo2 + 2Fc2)/3 |
6649 reflections | Δρmax = 2.15 e Å−3 |
364 parameters | Δρmin = −0.52 e Å−3 |
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. |
x | y | z | Uiso*/Ueq | ||
Ru1 | 0.280946 (13) | 0.392843 (15) | 0.163094 (17) | 0.02747 (12) | |
O1 | 0.17546 (13) | 0.36260 (16) | 0.10031 (17) | 0.0372 (6) | |
N1 | 0.22692 (17) | 0.38041 (18) | 0.2407 (2) | 0.0339 (6) | |
N2 | 0.26308 (16) | 0.50618 (18) | 0.14929 (19) | 0.0317 (6) | |
N3 | 0.37222 (15) | 0.43350 (17) | 0.24506 (19) | 0.0302 (6) | |
N4 | 0.31600 (15) | 0.38774 (16) | 0.06626 (19) | 0.0286 (6) | |
N5 | 0.30459 (16) | 0.27879 (17) | 0.16586 (19) | 0.0308 (6) | |
C1 | 0.16864 (19) | 0.3599 (2) | 0.1738 (3) | 0.0363 (8) | |
C2 | 0.1113 (2) | 0.3371 (3) | 0.1884 (3) | 0.0540 (11) | |
H1 | 0.0707 | 0.3215 | 0.1420 | 0.065* | |
C3 | 0.1159 (3) | 0.3380 (4) | 0.2720 (4) | 0.0644 (14) | |
H2 | 0.0776 | 0.3236 | 0.2835 | 0.077* | |
C4 | 0.1753 (3) | 0.3597 (3) | 0.3397 (3) | 0.0601 (13) | |
H3 | 0.1780 | 0.3600 | 0.3974 | 0.072* | |
C5 | 0.2304 (2) | 0.3807 (3) | 0.3224 (3) | 0.0436 (9) | |
H4 | 0.2714 | 0.3957 | 0.3685 | 0.052* | |
C6 | 0.2038 (2) | 0.5384 (2) | 0.0970 (3) | 0.0401 (8) | |
H5 | 0.1649 | 0.5069 | 0.0713 | 0.048* | |
C7 | 0.1978 (3) | 0.6152 (2) | 0.0796 (3) | 0.0458 (10) | |
H6 | 0.1554 | 0.6359 | 0.0420 | 0.055* | |
C8 | 0.2535 (2) | 0.6619 (2) | 0.1170 (3) | 0.0449 (9) | |
H7 | 0.2503 | 0.7149 | 0.1043 | 0.054* | |
C9 | 0.3143 (2) | 0.6303 (2) | 0.1736 (3) | 0.0428 (9) | |
H8 | 0.3531 | 0.6617 | 0.2015 | 0.051* | |
C10 | 0.3179 (2) | 0.5522 (2) | 0.1889 (2) | 0.0330 (7) | |
C11 | 0.37965 (19) | 0.5111 (2) | 0.2461 (2) | 0.0328 (7) | |
C12 | 0.4391 (2) | 0.5460 (2) | 0.2990 (3) | 0.0420 (9) | |
H9 | 0.4437 | 0.5998 | 0.2979 | 0.050* | |
C13 | 0.4921 (2) | 0.5020 (3) | 0.3539 (3) | 0.0491 (10) | |
H10 | 0.5333 | 0.5254 | 0.3912 | 0.059* | |
C14 | 0.4850 (2) | 0.4241 (3) | 0.3545 (3) | 0.0482 (10) | |
H11 | 0.5208 | 0.3932 | 0.3925 | 0.058* | |
C15 | 0.4241 (2) | 0.3915 (2) | 0.2981 (3) | 0.0386 (8) | |
H12 | 0.4194 | 0.3376 | 0.2974 | 0.046* | |
C16 | 0.32495 (19) | 0.4469 (2) | 0.0210 (2) | 0.0350 (7) | |
H13 | 0.3142 | 0.4967 | 0.0339 | 0.042* | |
C17 | 0.3490 (2) | 0.4385 (2) | −0.0435 (3) | 0.0407 (8) | |
H14 | 0.3551 | 0.4819 | −0.0735 | 0.049* | |
C18 | 0.3641 (2) | 0.3664 (3) | −0.0639 (3) | 0.0418 (9) | |
H15 | 0.3798 | 0.3591 | −0.1088 | 0.050* | |
C19 | 0.35571 (19) | 0.3049 (2) | −0.0169 (2) | 0.0360 (8) | |
H16 | 0.3661 | 0.2547 | −0.0292 | 0.043* | |
C20 | 0.33226 (16) | 0.3167 (2) | 0.0476 (2) | 0.0290 (7) | |
C21 | 0.32396 (17) | 0.2552 (2) | 0.1020 (2) | 0.0299 (7) | |
C22 | 0.3350 (2) | 0.1789 (2) | 0.0904 (2) | 0.0364 (8) | |
H17 | 0.3475 | 0.1635 | 0.0445 | 0.044* | |
C23 | 0.3277 (2) | 0.1252 (2) | 0.1467 (3) | 0.0431 (9) | |
H18 | 0.3349 | 0.0726 | 0.1398 | 0.052* | |
C24 | 0.3098 (2) | 0.1493 (2) | 0.2127 (3) | 0.0451 (9) | |
H19 | 0.3053 | 0.1136 | 0.2525 | 0.054* | |
C25 | 0.2985 (2) | 0.2257 (2) | 0.2202 (2) | 0.0382 (8) | |
H20 | 0.2858 | 0.2417 | 0.2656 | 0.046* | |
C26 | 0.5000 | 0.060 (2) | 0.2500 | 0.261 (14)* | |
C27 | 0.5069 (15) | 0.0841 (17) | 0.1670 (15) | 0.315 (14)* | |
C28 | 0.5073 (13) | 0.1660 (16) | 0.1687 (14) | 0.298 (13)* | |
C29 | 0.5000 | 0.195 (2) | 0.2500 | 0.280 (15)* | |
P1 | 0.08171 (6) | 0.20091 (7) | 0.47206 (7) | 0.0441 (3) | |
F1 | 0.00943 (19) | 0.1814 (3) | 0.4681 (3) | 0.1085 (16) | |
F2 | 0.15314 (17) | 0.2239 (2) | 0.4717 (2) | 0.0824 (11) | |
F3 | 0.0591 (2) | 0.2868 (2) | 0.4424 (3) | 0.0974 (13) | |
F4 | 0.05521 (19) | 0.1762 (2) | 0.3729 (2) | 0.0841 (11) | |
F5 | 0.1062 (3) | 0.11723 (19) | 0.5001 (3) | 0.1089 (18) | |
F6 | 0.10849 (19) | 0.2264 (2) | 0.5700 (2) | 0.0755 (10) |
U11 | U22 | U33 | U12 | U13 | U23 | |
Ru1 | 0.02940 (17) | 0.02765 (17) | 0.02682 (17) | −0.00189 (9) | 0.01271 (12) | −0.00315 (9) |
O1 | 0.0341 (13) | 0.0431 (15) | 0.0339 (13) | −0.0043 (11) | 0.0131 (11) | −0.0066 (11) |
N1 | 0.0383 (16) | 0.0330 (15) | 0.0337 (16) | −0.0018 (12) | 0.0177 (14) | −0.0043 (12) |
N2 | 0.0361 (15) | 0.0319 (15) | 0.0305 (14) | 0.0024 (12) | 0.0169 (12) | −0.0018 (12) |
N3 | 0.0316 (14) | 0.0308 (15) | 0.0306 (14) | −0.0012 (11) | 0.0149 (12) | −0.0031 (11) |
N4 | 0.0276 (14) | 0.0309 (15) | 0.0278 (14) | −0.0024 (11) | 0.0117 (12) | −0.0032 (11) |
N5 | 0.0342 (15) | 0.0284 (14) | 0.0311 (14) | −0.0036 (12) | 0.0143 (12) | −0.0024 (11) |
C1 | 0.0350 (18) | 0.0373 (19) | 0.0374 (19) | −0.0013 (15) | 0.0153 (16) | −0.0033 (15) |
C2 | 0.040 (2) | 0.065 (3) | 0.061 (3) | −0.008 (2) | 0.024 (2) | −0.002 (2) |
C3 | 0.058 (3) | 0.078 (4) | 0.077 (4) | −0.003 (3) | 0.047 (3) | 0.004 (3) |
C4 | 0.075 (3) | 0.071 (3) | 0.049 (3) | 0.003 (3) | 0.041 (3) | 0.003 (2) |
C5 | 0.053 (2) | 0.045 (2) | 0.035 (2) | 0.0014 (18) | 0.0199 (19) | −0.0035 (16) |
C6 | 0.042 (2) | 0.040 (2) | 0.0370 (19) | 0.0065 (16) | 0.0151 (17) | 0.0008 (16) |
C7 | 0.057 (3) | 0.041 (2) | 0.042 (2) | 0.0138 (18) | 0.022 (2) | 0.0058 (17) |
C8 | 0.063 (3) | 0.033 (2) | 0.047 (2) | 0.0104 (18) | 0.031 (2) | 0.0062 (16) |
C9 | 0.058 (2) | 0.0318 (19) | 0.049 (2) | −0.0037 (17) | 0.033 (2) | −0.0042 (17) |
C10 | 0.0435 (19) | 0.0289 (17) | 0.0350 (18) | −0.0001 (14) | 0.0244 (16) | −0.0039 (13) |
C11 | 0.0375 (18) | 0.0317 (17) | 0.0364 (18) | −0.0061 (14) | 0.0221 (15) | −0.0066 (14) |
C12 | 0.043 (2) | 0.038 (2) | 0.051 (2) | −0.0098 (16) | 0.0244 (19) | −0.0139 (17) |
C13 | 0.035 (2) | 0.057 (3) | 0.052 (2) | −0.0104 (18) | 0.0133 (19) | −0.014 (2) |
C14 | 0.035 (2) | 0.053 (3) | 0.050 (2) | 0.0005 (18) | 0.0089 (18) | −0.001 (2) |
C15 | 0.036 (2) | 0.038 (2) | 0.038 (2) | −0.0004 (15) | 0.0105 (17) | 0.0023 (15) |
C16 | 0.0395 (19) | 0.0323 (18) | 0.0345 (18) | −0.0007 (14) | 0.0162 (15) | −0.0011 (14) |
C17 | 0.051 (2) | 0.038 (2) | 0.040 (2) | −0.0022 (17) | 0.0255 (18) | 0.0046 (16) |
C18 | 0.050 (2) | 0.044 (2) | 0.042 (2) | −0.0015 (18) | 0.0287 (19) | −0.0015 (17) |
C19 | 0.0385 (19) | 0.0352 (19) | 0.0380 (19) | −0.0012 (15) | 0.0191 (16) | −0.0058 (15) |
C20 | 0.0253 (15) | 0.0320 (17) | 0.0279 (16) | −0.0033 (12) | 0.0087 (13) | −0.0024 (13) |
C21 | 0.0283 (16) | 0.0318 (17) | 0.0279 (16) | −0.0021 (13) | 0.0092 (13) | −0.0029 (13) |
C22 | 0.0409 (19) | 0.0336 (18) | 0.0350 (18) | 0.0016 (15) | 0.0153 (16) | −0.0032 (14) |
C23 | 0.054 (2) | 0.0284 (17) | 0.047 (2) | 0.0025 (17) | 0.021 (2) | 0.0012 (16) |
C24 | 0.059 (3) | 0.034 (2) | 0.043 (2) | −0.0004 (18) | 0.021 (2) | 0.0060 (16) |
C25 | 0.050 (2) | 0.0344 (19) | 0.0343 (18) | −0.0021 (16) | 0.0207 (17) | 0.0014 (15) |
P1 | 0.0401 (5) | 0.0446 (6) | 0.0454 (6) | −0.0092 (4) | 0.0148 (5) | −0.0035 (5) |
F1 | 0.063 (2) | 0.157 (4) | 0.120 (3) | −0.048 (2) | 0.051 (2) | −0.029 (3) |
F2 | 0.0651 (19) | 0.107 (3) | 0.087 (2) | −0.0391 (19) | 0.0433 (18) | −0.044 (2) |
F3 | 0.097 (3) | 0.055 (2) | 0.113 (3) | 0.0047 (19) | 0.013 (2) | 0.006 (2) |
F4 | 0.091 (2) | 0.103 (3) | 0.0497 (17) | −0.043 (2) | 0.0180 (17) | −0.0177 (17) |
F5 | 0.114 (3) | 0.0402 (17) | 0.110 (3) | −0.0007 (18) | −0.023 (3) | −0.0036 (18) |
F6 | 0.098 (2) | 0.082 (2) | 0.0528 (17) | −0.0333 (19) | 0.0366 (17) | −0.0147 (16) |
Ru1—N2 | 2.019 (3) | C12—C13 | 1.380 (7) |
Ru1—N3 | 2.023 (3) | C12—H9 | 0.9500 |
Ru1—N4 | 2.050 (3) | C13—C14 | 1.374 (7) |
Ru1—N5 | 2.059 (3) | C13—H10 | 0.9500 |
Ru1—N1 | 2.073 (3) | C14—C15 | 1.395 (6) |
Ru1—O1 | 2.146 (3) | C14—H11 | 0.9500 |
Ru1—C1 | 2.549 (4) | C15—H12 | 0.9500 |
O1—C1 | 1.303 (5) | C16—C17 | 1.383 (5) |
N1—C5 | 1.347 (5) | C16—H13 | 0.9500 |
N1—C1 | 1.357 (5) | C17—C18 | 1.381 (6) |
N2—C6 | 1.348 (5) | C17—H14 | 0.9500 |
N2—C10 | 1.361 (5) | C18—C19 | 1.391 (6) |
N3—C15 | 1.337 (5) | C18—H15 | 0.9500 |
N3—C11 | 1.369 (5) | C19—C20 | 1.382 (5) |
N4—C16 | 1.345 (5) | C19—H16 | 0.9500 |
N4—C20 | 1.364 (4) | C20—C21 | 1.469 (5) |
N5—C25 | 1.347 (5) | C21—C22 | 1.387 (5) |
N5—C21 | 1.362 (5) | C22—C23 | 1.388 (6) |
C1—C2 | 1.403 (6) | C22—H17 | 0.9500 |
C2—C3 | 1.370 (7) | C23—C24 | 1.378 (6) |
C2—H1 | 0.9500 | C23—H18 | 0.9500 |
C3—C4 | 1.383 (8) | C24—C25 | 1.375 (6) |
C3—H2 | 0.9500 | C24—H19 | 0.9500 |
C4—C5 | 1.373 (7) | C25—H20 | 0.9500 |
C4—H3 | 0.9500 | C26—C27 | 1.521 (17) |
C5—H4 | 0.9500 | C26—C27i | 1.521 (17) |
C6—C7 | 1.372 (6) | C27—C28 | 1.436 (18) |
C6—H5 | 0.9500 | C28—C29 | 1.527 (16) |
C7—C8 | 1.376 (7) | C29—C28i | 1.527 (16) |
C7—H6 | 0.9500 | P1—F1 | 1.561 (3) |
C8—C9 | 1.388 (7) | P1—F5 | 1.567 (4) |
C8—H7 | 0.9500 | P1—F6 | 1.581 (3) |
C9—C10 | 1.391 (5) | P1—F2 | 1.585 (3) |
C9—H8 | 0.9500 | P1—F4 | 1.595 (3) |
C10—C11 | 1.478 (5) | P1—F3 | 1.599 (4) |
C11—C12 | 1.374 (5) | ||
N2—Ru1—N3 | 79.60 (13) | N2—C10—C9 | 121.3 (4) |
N2—Ru1—N4 | 93.66 (11) | N2—C10—C11 | 113.9 (3) |
N3—Ru1—N4 | 89.89 (11) | C9—C10—C11 | 124.7 (4) |
N2—Ru1—N5 | 172.74 (12) | N3—C11—C12 | 121.6 (4) |
N3—Ru1—N5 | 99.46 (12) | N3—C11—C10 | 114.0 (3) |
N4—Ru1—N5 | 79.11 (12) | C12—C11—C10 | 124.4 (4) |
N2—Ru1—N1 | 92.77 (12) | C11—C12—C13 | 119.3 (4) |
N3—Ru1—N1 | 103.71 (12) | C11—C12—H9 | 120.3 |
N4—Ru1—N1 | 165.81 (12) | C13—C12—H9 | 120.3 |
N5—Ru1—N1 | 94.45 (12) | C14—C13—C12 | 119.8 (4) |
N2—Ru1—O1 | 94.13 (12) | C14—C13—H10 | 120.1 |
N3—Ru1—O1 | 165.07 (11) | C12—C13—H10 | 120.1 |
N4—Ru1—O1 | 104.11 (11) | C13—C14—C15 | 118.6 (4) |
N5—Ru1—O1 | 88.43 (11) | C13—C14—H11 | 120.7 |
N1—Ru1—O1 | 62.79 (12) | C15—C14—H11 | 120.7 |
N2—Ru1—C1 | 95.17 (12) | N3—C15—C14 | 122.2 (4) |
N3—Ru1—C1 | 135.66 (12) | N3—C15—H12 | 118.9 |
N4—Ru1—C1 | 134.45 (12) | C14—C15—H12 | 118.9 |
N5—Ru1—C1 | 90.50 (12) | N4—C16—C17 | 123.0 (4) |
N1—Ru1—C1 | 32.09 (13) | N4—C16—H13 | 118.5 |
O1—Ru1—C1 | 30.73 (11) | C17—C16—H13 | 118.5 |
C1—O1—Ru1 | 92.0 (2) | C18—C17—C16 | 119.2 (4) |
C5—N1—C1 | 120.6 (4) | C18—C17—H14 | 120.4 |
C5—N1—Ru1 | 145.6 (3) | C16—C17—H14 | 120.4 |
C1—N1—Ru1 | 93.7 (2) | C17—C18—C19 | 118.3 (4) |
C6—N2—C10 | 118.5 (3) | C17—C18—H15 | 120.9 |
C6—N2—Ru1 | 125.0 (3) | C19—C18—H15 | 120.9 |
C10—N2—Ru1 | 116.1 (2) | C20—C19—C18 | 120.0 (4) |
C15—N3—C11 | 118.5 (3) | C20—C19—H16 | 120.0 |
C15—N3—Ru1 | 125.7 (3) | C18—C19—H16 | 120.0 |
C11—N3—Ru1 | 115.8 (2) | N4—C20—C19 | 121.6 (3) |
C16—N4—C20 | 117.8 (3) | N4—C20—C21 | 114.9 (3) |
C16—N4—Ru1 | 126.6 (2) | C19—C20—C21 | 123.5 (3) |
C20—N4—Ru1 | 115.5 (2) | N5—C21—C22 | 121.8 (3) |
C25—N5—C21 | 118.0 (3) | N5—C21—C20 | 114.8 (3) |
C25—N5—Ru1 | 126.6 (3) | C22—C21—C20 | 123.4 (3) |
C21—N5—Ru1 | 115.2 (2) | C21—C22—C23 | 119.1 (4) |
O1—C1—N1 | 111.5 (3) | C21—C22—H17 | 120.5 |
O1—C1—C2 | 127.8 (4) | C23—C22—H17 | 120.4 |
N1—C1—C2 | 120.7 (4) | C24—C23—C22 | 119.1 (4) |
O1—C1—Ru1 | 57.31 (18) | C24—C23—H18 | 120.5 |
N1—C1—Ru1 | 54.24 (19) | C22—C23—H18 | 120.5 |
C2—C1—Ru1 | 173.4 (3) | C25—C24—C23 | 119.3 (4) |
C3—C2—C1 | 117.7 (5) | C25—C24—H19 | 120.4 |
C3—C2—H1 | 121.1 | C23—C24—H19 | 120.4 |
C1—C2—H1 | 121.1 | N5—C25—C24 | 122.8 (4) |
C2—C3—C4 | 121.2 (4) | N5—C25—H20 | 118.6 |
C2—C3—H2 | 119.4 | C24—C25—H20 | 118.6 |
C4—C3—H2 | 119.4 | C27—C26—C27i | 148 (4) |
C5—C4—C3 | 119.0 (5) | C28—C27—C26 | 105 (3) |
C5—C4—H3 | 120.5 | C27—C28—C29 | 111 (3) |
C3—C4—H3 | 120.5 | C28i—C29—C28 | 141 (4) |
N1—C5—C4 | 120.8 (4) | F1—P1—F5 | 90.9 (3) |
N1—C5—H4 | 119.6 | F1—P1—F6 | 92.8 (2) |
C4—C5—H4 | 119.6 | F5—P1—F6 | 90.6 (2) |
N2—C6—C7 | 122.4 (4) | F1—P1—F2 | 176.8 (3) |
N2—C6—H5 | 118.8 | F5—P1—F2 | 91.8 (3) |
C7—C6—H5 | 118.8 | F6—P1—F2 | 88.93 (18) |
C6—C7—C8 | 119.7 (4) | F1—P1—F4 | 87.8 (2) |
C6—C7—H6 | 120.2 | F5—P1—F4 | 89.9 (2) |
C8—C7—H6 | 120.2 | F6—P1—F4 | 179.2 (2) |
C7—C8—C9 | 118.9 (4) | F2—P1—F4 | 90.47 (19) |
C7—C8—H7 | 120.5 | F1—P1—F3 | 91.2 (3) |
C9—C8—H7 | 120.5 | F5—P1—F3 | 177.8 (3) |
C8—C9—C10 | 119.2 (4) | F6—P1—F3 | 90.0 (2) |
C8—C9—H8 | 120.4 | F2—P1—F3 | 86.1 (2) |
C10—C9—H8 | 120.4 | F4—P1—F3 | 89.5 (2) |
N2—Ru1—O1—C1 | −93.2 (2) | N5—Ru1—C1—O1 | −86.1 (2) |
N3—Ru1—O1—C1 | −28.7 (6) | N1—Ru1—C1—O1 | 176.3 (4) |
N4—Ru1—O1—C1 | 172.0 (2) | N2—Ru1—C1—N1 | −87.0 (2) |
N5—Ru1—O1—C1 | 93.6 (2) | N3—Ru1—C1—N1 | −6.6 (3) |
N1—Ru1—O1—C1 | −2.2 (2) | N4—Ru1—C1—N1 | 172.8 (2) |
N2—Ru1—N1—C5 | −90.5 (5) | N5—Ru1—C1—N1 | 97.6 (2) |
N3—Ru1—N1—C5 | −10.5 (5) | O1—Ru1—C1—N1 | −176.3 (4) |
N4—Ru1—N1—C5 | 152.6 (5) | O1—C1—C2—C3 | 179.3 (5) |
N5—Ru1—N1—C5 | 90.4 (5) | N1—C1—C2—C3 | 1.5 (7) |
O1—Ru1—N1—C5 | 176.3 (5) | C1—C2—C3—C4 | −0.9 (8) |
C1—Ru1—N1—C5 | 174.2 (6) | C2—C3—C4—C5 | 0.2 (9) |
N2—Ru1—N1—C1 | 95.3 (2) | C1—N1—C5—C4 | 0.6 (6) |
N3—Ru1—N1—C1 | 175.3 (2) | Ru1—N1—C5—C4 | −172.7 (4) |
N4—Ru1—N1—C1 | −21.6 (6) | C3—C4—C5—N1 | 0.0 (8) |
N5—Ru1—N1—C1 | −83.8 (2) | C10—N2—C6—C7 | 2.8 (6) |
O1—Ru1—N1—C1 | 2.1 (2) | Ru1—N2—C6—C7 | −169.3 (3) |
N3—Ru1—N2—C6 | 179.9 (3) | N2—C6—C7—C8 | −0.7 (6) |
N4—Ru1—N2—C6 | 90.7 (3) | C6—C7—C8—C9 | −1.7 (6) |
N1—Ru1—N2—C6 | −76.7 (3) | C7—C8—C9—C10 | 1.9 (6) |
O1—Ru1—N2—C6 | −13.8 (3) | C6—N2—C10—C9 | −2.6 (5) |
C1—Ru1—N2—C6 | −44.6 (3) | Ru1—N2—C10—C9 | 170.2 (3) |
N3—Ru1—N2—C10 | 7.5 (2) | C6—N2—C10—C11 | 178.7 (3) |
N4—Ru1—N2—C10 | −81.7 (3) | Ru1—N2—C10—C11 | −8.4 (4) |
N1—Ru1—N2—C10 | 111.0 (3) | C8—C9—C10—N2 | 0.3 (6) |
O1—Ru1—N2—C10 | 173.9 (2) | C8—C9—C10—C11 | 178.8 (3) |
C1—Ru1—N2—C10 | 143.1 (2) | C15—N3—C11—C12 | 1.0 (5) |
N2—Ru1—N3—C15 | 173.5 (3) | Ru1—N3—C11—C12 | 179.8 (3) |
N4—Ru1—N3—C15 | −92.7 (3) | C15—N3—C11—C10 | −176.5 (3) |
N5—Ru1—N3—C15 | −13.8 (3) | Ru1—N3—C11—C10 | 2.3 (4) |
N1—Ru1—N3—C15 | 83.2 (3) | N2—C10—C11—N3 | 3.9 (4) |
O1—Ru1—N3—C15 | 107.3 (5) | C9—C10—C11—N3 | −174.7 (3) |
C1—Ru1—N3—C15 | 86.8 (3) | N2—C10—C11—C12 | −173.5 (3) |
N2—Ru1—N3—C11 | −5.2 (2) | C9—C10—C11—C12 | 7.9 (6) |
N4—Ru1—N3—C11 | 88.5 (2) | N3—C11—C12—C13 | −1.5 (6) |
N5—Ru1—N3—C11 | 167.5 (2) | C10—C11—C12—C13 | 175.8 (4) |
N1—Ru1—N3—C11 | −95.6 (2) | C11—C12—C13—C14 | 0.5 (7) |
O1—Ru1—N3—C11 | −71.4 (5) | C12—C13—C14—C15 | 0.8 (7) |
C1—Ru1—N3—C11 | −92.0 (3) | C11—N3—C15—C14 | 0.4 (6) |
N2—Ru1—N4—C16 | 4.0 (3) | Ru1—N3—C15—C14 | −178.3 (3) |
N3—Ru1—N4—C16 | −75.5 (3) | C13—C14—C15—N3 | −1.3 (7) |
N5—Ru1—N4—C16 | −175.2 (3) | C20—N4—C16—C17 | 0.7 (5) |
N1—Ru1—N4—C16 | 120.8 (5) | Ru1—N4—C16—C17 | 179.9 (3) |
O1—Ru1—N4—C16 | 99.2 (3) | N4—C16—C17—C18 | 0.7 (6) |
C1—Ru1—N4—C16 | 105.0 (3) | C16—C17—C18—C19 | −1.3 (6) |
N2—Ru1—N4—C20 | −176.7 (2) | C17—C18—C19—C20 | 0.6 (6) |
N3—Ru1—N4—C20 | 103.7 (2) | C16—N4—C20—C19 | −1.5 (5) |
N5—Ru1—N4—C20 | 4.1 (2) | Ru1—N4—C20—C19 | 179.2 (3) |
N1—Ru1—N4—C20 | −59.9 (6) | C16—N4—C20—C21 | 177.5 (3) |
O1—Ru1—N4—C20 | −81.5 (3) | Ru1—N4—C20—C21 | −1.8 (4) |
C1—Ru1—N4—C20 | −75.8 (3) | C18—C19—C20—N4 | 0.9 (6) |
N3—Ru1—N5—C25 | 90.8 (3) | C18—C19—C20—C21 | −178.1 (4) |
N4—Ru1—N5—C25 | 178.8 (3) | C25—N5—C21—C22 | 2.2 (5) |
N1—Ru1—N5—C25 | −14.0 (3) | Ru1—N5—C21—C22 | −173.6 (3) |
O1—Ru1—N5—C25 | −76.5 (3) | C25—N5—C21—C20 | −177.6 (3) |
C1—Ru1—N5—C25 | −45.8 (3) | Ru1—N5—C21—C20 | 6.6 (4) |
N3—Ru1—N5—C21 | −93.9 (3) | N4—C20—C21—N5 | −3.2 (4) |
N4—Ru1—N5—C21 | −5.9 (2) | C19—C20—C21—N5 | 175.8 (3) |
N1—Ru1—N5—C21 | 161.4 (3) | N4—C20—C21—C22 | 177.0 (3) |
O1—Ru1—N5—C21 | 98.8 (2) | C19—C20—C21—C22 | −4.0 (5) |
C1—Ru1—N5—C21 | 129.5 (3) | N5—C21—C22—C23 | −1.5 (6) |
Ru1—O1—C1—N1 | 3.2 (3) | C20—C21—C22—C23 | 178.2 (4) |
Ru1—O1—C1—C2 | −174.8 (4) | C21—C22—C23—C24 | −0.2 (6) |
C5—N1—C1—O1 | −179.5 (3) | C22—C23—C24—C25 | 1.2 (7) |
Ru1—N1—C1—O1 | −3.3 (3) | C21—N5—C25—C24 | −1.1 (6) |
C5—N1—C1—C2 | −1.3 (6) | Ru1—N5—C25—C24 | 174.1 (3) |
Ru1—N1—C1—C2 | 174.9 (4) | C23—C24—C25—N5 | −0.5 (7) |
C5—N1—C1—Ru1 | −176.2 (4) | C27i—C26—C27—C28 | 0.4 (17) |
N2—Ru1—C1—O1 | 89.4 (2) | C26—C27—C28—C29 | −1 (3) |
N3—Ru1—C1—O1 | 169.8 (2) | C27—C28—C29—C28i | 0.4 (18) |
N4—Ru1—C1—O1 | −10.9 (3) |
Symmetry code: (i) −x+1, y, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | [Ru(C5H4NO)(C10H8N2)2]PF6·0.5C6H6 |
Mr | 688.53 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 200 |
a, b, c (Å) | 21.4180 (4), 17.5316 (4), 16.8375 (3) |
β (°) | 113.3866 (7) |
V (Å3) | 5802.9 (2) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.67 |
Crystal size (mm) | 0.26 × 0.22 × 0.10 |
Data collection | |
Diffractometer | Rigaku R-AXIS RAPID |
Absorption correction | Multi-scan (ABSCOR; Rigaku, 1995)) |
Tmin, Tmax | 0.846, 0.937 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 28444, 6649, 6068 |
Rint | 0.026 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.047, 0.155, 1.14 |
No. of reflections | 6649 |
No. of parameters | 364 |
No. of restraints | 3 |
H-atom treatment | H-atom parameters constrained |
w = 1/[σ2(Fo2) + (0.0839P)2 + 20.9991P] where P = (Fo2 + 2Fc2)/3 | |
Δρmax, Δρmin (e Å−3) | 2.15, −0.52 |
Computer programs: RAPID-AUTO (Rigaku, 2002), SIR2004 (Burla et al., 2005), SHELXL97 (Sheldrick, 2008), Yadokari-XG (Wakita, 2001; Kabuto et al., 2009) and ORTEP-3 for Windows (Farrugia, 1997), Yadokari-XG (Wakita, 2001; Kabuto et al., 2009) and publCIF (Westrip, 2010).
Ru1—N2 | 2.019 (3) | Ru1—N5 | 2.059 (3) |
Ru1—N3 | 2.023 (3) | Ru1—N1 | 2.073 (3) |
Ru1—N4 | 2.050 (3) | Ru1—O1 | 2.146 (3) |
N2—Ru1—N3 | 79.60 (13) | N4—Ru1—N1 | 165.81 (12) |
N2—Ru1—N5 | 172.74 (12) | N3—Ru1—O1 | 165.07 (11) |
N4—Ru1—N5 | 79.11 (12) | N1—Ru1—O1 | 62.79 (12) |
References
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Polypyridine ruthenium complexes have been attracted the interest of researchers for their electrochemistry and photochemistry and also their potential applications as molecular devices. Santra et al. (1997) have reported two ruthenium complexes with pyridine-2-thiolate (2-pyS) or pyridin-2-olate (2-pyO). They have revealed the crystal structure of [RuII(bpy)2(2-pyS)]ClO4 (bpy = 2,2'-bipyridine) complex (1), but X-ray structure study has not been carried out for the 2-pyO complex. Here, we report the crystal structure of [RuII(bpy)2(2-pyO)](PF6)(C6H6)0.5 (2) and discuss the structural difference between them.
The crystal structure of 2 is shown in Fig. 1. Bond lengths of Ru–O and Ru–N(2-pyO) in 2 are 2.146 (3) and 2.073 (3) Å, respectively. Comparing the bond lengths and that of six-coordinated ruthenium complexes with bidentate 2-pyO derivatives, the Ru–O bond length lies within the range of the reported distances, but Ru–N(2-pyO) is a little shorter than they. For example, in Ru(PPh3)2(6-methylpyridin-2-olate)2 (Clegg et al., (1980), Ru–O and Ru–N(2-pyO) lengths are 2.151 (4) and 2.0919 (5) Å, respectively. In [Ru(PMe3)4(6-chloropyridin-2-olate)]CF3SO3 (Cotton et al., (1998), Ru–O and Ru–N(2-pyO) lengths are 2.184 (3) and 2.213 (6) Å, respectively. Average Ru–N(bpy) length in 2 is ca 2.04 Å, which is typical length for Ru-bpy complexes (Holligan et al., (1992).
The compound 2 has distorted octahedral geometry on Ru–N5O1 coordination environment. Coordination polyhedron of 1 is also distorted; however, the distortion of the 2-pyO complex is much more than that of the 2-pyS complex. For example, N1–Ru1–O1 bite angle of 2 is 62.79 (12)° which is steeper than N(2-pyS)–Ru–S(2-pyS) bite angle in 1 (68.6 (2)°). O1–Ru1–N3 and N1–Ru1–N4 angles are 165.07 (11)° and 165.81 (12)°, respectively, that are also steeper than corresponding angles in 1 (167.3 (2)°, 170.1 (3)°) On the other hands, N(bpy)–Ru–N(bpy) angles and Ru–N(bpy) distances in these complexes are almost equal (the average N(bpy)–Ru–N(bpy) bidentate angle: 78.9° (1), 79.36° (2); the trans-N(bpy)–Ru–N(bpy) angle: 173.6 (3)° (1), 172.74 (12)° (2); the average Ru–N(bpy) distance: 2.05 Å (1), 2.04 Å (2)) The equality shows that the difference in the degree of distortion is caused by the distinction between the N,S- and N,O-chelating ligands. Bond lengths of Ru–N(2-pyO) (2.073 (3) Å) and Ru–N(2-pyS) (2.060 (7) Å) are almost same, but the Ru–O bond length (2.146 (3) Å) is shorter than the Ru–S bond length (2.434 (3) Å). Due to the smaller size of O atom with respect to the S atom, the short Ru–O bond would make 2-pyO ligand tilt up to horizontal.