metal-organic compounds
(4′-Ethynyl-2,2′:6′,2′′-terpyridine)(2,2′:6′,2′′-terpyridine)ruthenium(II) bis(hexafluoridophosphate) acetonitrile disolvate
aLos Alamos National Laboratory, Los Alamos, NM 87545, USA
*Correspondence e-mail: rcrocha@lanl.gov
The title heteroleptic bis-terpyridine complex, [Ru(C15H11N3)(C17H11N3)](PF6)2·2CH3CN, crystallized from an acetonitrile solution as a salt containing two hexafluoridophosphate counter-ions and two acetonitrile solvent molecules. The RuII atom has a distorted octahedral geometry due to the restricted bite angle [157.7 (3)°] of the two mer-arranged N,N′,N′′-tridendate ligands, viz. 2,2′:6′,2′′-terpyridine (tpy) and 4′-ethynyl-2,2′:6′,2′′-terpyridine (tpy′), which are essentially perpendicular to each other, with a dihedral angle of 87.75 (12)° between their terpyridyl planes. The rod-like acetylene group lies in the same plane as its adjacent terpyridyl moiety, with a maximum deviation of only 0.071 (11) Å from coplanarity with the pyridine rings. The mean Ru—N bond length involving the outer N atoms trans to each other is 2.069 (6) Å at tpy and 2.070 (6) Å at tpy′. The Ru—N bond length involving the central N atom is 1.964 (6) Å at tpy and 1.967 (6) Å at tpy′. Two of the three counter anions were refined as half-occupied.
Related literature
For the II–terpyridine complex containing the {Ru(tpy–C≡C)} fragment, see: Ruben et al. (2008). For a comparative discussion, see the Comment section in the Supplementary materials. For bond lengths and angles in related tpy complexes, see: Lashgari et al. (1999); Scudder et al. (2005). For the preparation of the starting materials, see: Benniston et al. (2005); Grosshenny et al. (1997); Sullivan et al. (1980); Ziessel et al. (2004). For general properties of this complex and related systems, see: Grosshenny et al. (1996); Hammarström & Johansson (2010); Ruther et al. (2011); Ziessel et al. (2004).
of a RuExperimental
Crystal data
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Data collection: APEX2 (Bruker, 2007); cell SAINT-Plus (Bruker, 2007); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
10.1107/S1600536812051227/sj5287sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536812051227/sj5287Isup2.hkl
The compound [Ru(tpy)(tpy')](PF6)2 was prepared from the precursor [Ru(tpy)(tpy'-TMS)](PF6)2 (tpy'-TMS = 4'-trimethylsilylethynyl-(2,2':6',2"-terpy)) as described in the literature (Benniston et al., 2005). Also synthesized according to reported procedures were the starting materials Ru(tpy)Cl3 (Sullivan et al., 1980) and tpy'-TMS (Grosshenny et al., 1997). The identity of the cation [Ru(tpy)(tpy')]2+ (I) in solution was also confirmed by electrochemical and spectroscopic methods. Single crystals suitable for X-ray analysis were grown by slow diffusion of Et2O into MeCN solutions of [Ru(tpy)(tpy')](PF6)2 in a long thin tube.
The structure was solved by using
and difference Fourier techniques. All hydrogen atom positions were idealized, and rode on the atom they were attached to. The final included anisotropic temperature factors on all non-hydrogen atoms.Two of the hexafluorophosphate anions had very large temperature factors when compared to the third. Other characterization by nuclear magnetic resonance, electronic absorption spectroscopy, and electrochemical techniques clearly support the
+2 for the Ru center. As a result, the two hexafluorophosphate anions were refined at one-half occupancy.The compound [RuII(tpy)(tpy')](PF6)2×2MeCN crystallized in the triclinic 1) from an acetonitrile solution. The of its dication [Ru(tpy)(tpy')]2+ (I) is reported here for the first time, despite its well demonstrated relevance as a metallo-synthon unit into the construction of alkyne-bridged polyad arrays with optical/electronic applications (for example, see: Benniston et al., 2005; Grosshenny et al., 1996; Ziessel et al., 2004) and, more recently, as interesting precursors to optically/electrochemically active interfacial assemblies via surface click chemistry at the alkynyl group (for example, see: Ruther et al., 2011).
(PThe only other crystallographically characterized compound featuring the {Ru(tpy–C≡C)} fragment is the homoleptic complex [RuII(tpy")2](PF6)2 (II; tpy" = S-(4-[2,2':6',2"]terpyridin-4'-ylethynyl-phenyl ester), which was applied in studies of molecular electronics involving charge transport through single molecules (II) in break-junction configurations (Ruben et al., 2008). In this case, the compound also crystallized in the triclinic (P1). In II, the two elongated ligands pointed along the long axis of the complex, with only slight distortion across the metal center (N–Ru–N angle: 178.9 (4)°). The mean Ru—N bond distances (1.966 (8) Å for the central nitrogen and 2.066 (10) Å for the outer nitrogen atoms trans to each other) as well as the tpy" bite angles (158.3 (4)°) are very similar to those observed for I.
These distances and angles are also in very good agreement with typical values reported for [Ru(tpy)2]2+ (e.g., Lashgari et al., 1999; Scudder et al., 2005). The bite angle of terpyridines is well known to be far from the ideal 180° due to the unfavorable N,N,N geometric configuration of the mer-terdentate ligand (Hammarström & Johansson, 2010). In I, the two terpyridyl ligands are approximately planar, with only a slight bending towards the outer ring atoms (maximum deviation from planarity: 0.093 (10) Å for atom C13 at tpy and 0.110 (8) Å for atom C30 at tpy'). The acetylenic group (–C31≡C32–H32) lies along the main axis passing through the metal center as well as in the same plane as its adjacent terpyridyl moiety, with a maximum deviation of only 0.071 (11) Å (C32) from coplanarity. The length of the triple bond between C31 and C32 is 1.175 (13) Å.
For the ≡C)} fragment, see: Ruben et al. (2008). For a comparative discussion, see the Comment section in the Supplementary materials. For bond distances and angles in related tpy complexes, see: Lashgari et al. (1999); Scudder et al. (2005). For the preparation of the starting materials, see: Benniston et al. (2005); Grosshenny et al. (1997); Sullivan et al. (1980); Ziessel et al. (2004). For general properties of this complex and related systems, see: Grosshenny et al. (1996); Hammarström & Johansson (2010); Ruther et al. (2011); Ziessel et al. (2004).
of a RuII–terpyridine complex containing the {Ru(tpy–CData collection: APEX2 (Bruker, 2007); cell
SAINT-Plus (Bruker, 2007); data reduction: SAINT-Plus (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: publCIF (Westrip, 2010).[Ru(C15H11N3)(C17H11N3)](PF6)2·2C2H3N | Z = 2 |
Mr = 963.67 | F(000) = 964 |
Triclinic, P1 | Dx = 1.543 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.704 (2) Å | Cell parameters from 1822 reflections |
b = 8.860 (2) Å | θ = 4.7–41.0° |
c = 27.277 (7) Å | µ = 0.55 mm−1 |
α = 96.876 (4)° | T = 140 K |
β = 95.619 (3)° | Block, orange |
γ = 93.023 (3)° | 0.10 × 0.08 × 0.06 mm |
V = 2073.9 (10) Å3 |
Bruker D8 with APEXII CCD diffractometer | 7496 independent reflections |
Radiation source: fine-focus sealed tube | 5137 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.081 |
ω scans | θmax = 25.3°, θmin = 2.3° |
Absorption correction: multi-scan (SADABS; Bruker, 2007) | h = −10→10 |
Tmin = 0.947, Tmax = 0.968 | k = −10→10 |
19870 measured reflections | l = −32→32 |
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)] = 0.084 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.228 | H-atom parameters constrained |
S = 1.25 | w = 1/[σ2(Fo2) + (0.1P)2] where P = (Fo2 + 2Fc2)/3 |
7496 reflections | (Δ/σ)max < 0.001 |
596 parameters | Δρmax = 1.75 e Å−3 |
0 restraints | Δρmin = −0.94 e Å−3 |
[Ru(C15H11N3)(C17H11N3)](PF6)2·2C2H3N | γ = 93.023 (3)° |
Mr = 963.67 | V = 2073.9 (10) Å3 |
Triclinic, P1 | Z = 2 |
a = 8.704 (2) Å | Mo Kα radiation |
b = 8.860 (2) Å | µ = 0.55 mm−1 |
c = 27.277 (7) Å | T = 140 K |
α = 96.876 (4)° | 0.10 × 0.08 × 0.06 mm |
β = 95.619 (3)° |
Bruker D8 with APEXII CCD diffractometer | 7496 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2007) | 5137 reflections with I > 2σ(I) |
Tmin = 0.947, Tmax = 0.968 | Rint = 0.081 |
19870 measured reflections |
R[F2 > 2σ(F2)] = 0.084 | 0 restraints |
wR(F2) = 0.228 | H-atom parameters constrained |
S = 1.25 | Δρmax = 1.75 e Å−3 |
7496 reflections | Δρmin = −0.94 e Å−3 |
596 parameters |
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. |
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. Note: Two of the hexafluorophosphate anions had very large temperature factors when compared to the third. Other characterization by nuclear magnetic resonance, electronic absorption spectroscopy, and electrochemical techniques clearly support the oxidation state +2 for the Ru center. As a result, the two hexafluorophosphate anions were refined at one-half occupancy. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
Ru1 | 0.60446 (7) | 0.66280 (7) | 0.71976 (2) | 0.0229 (2) | |
P1 | 0.5105 (3) | 0.2494 (3) | 0.86893 (9) | 0.0406 (6) | |
P2 | 0.0665 (4) | 0.3760 (5) | 0.58567 (15) | 0.0223 (9) | 0.50 |
P3 | 0.3376 (7) | 0.9331 (5) | 0.52521 (18) | 0.0460 (13) | 0.50 |
F1 | 0.4111 (7) | 0.3779 (7) | 0.8487 (2) | 0.0662 (17) | |
F2 | 0.3720 (7) | 0.1889 (8) | 0.8960 (2) | 0.083 (2) | |
F3 | 0.6136 (8) | 0.1235 (7) | 0.8895 (3) | 0.087 (2) | |
F4 | 0.6488 (6) | 0.3082 (6) | 0.8399 (2) | 0.0627 (16) | |
F5 | 0.5731 (8) | 0.3658 (7) | 0.9169 (2) | 0.080 (2) | |
F6 | 0.4524 (7) | 0.1353 (6) | 0.8207 (2) | 0.0699 (18) | |
F7 | 0.2344 (13) | 0.4242 (15) | 0.5732 (4) | 0.071 (4) | 0.50 |
F8 | 0.0213 (12) | 0.3542 (11) | 0.5289 (3) | 0.048 (3) | 0.50 |
F9 | −0.0984 (14) | 0.3277 (16) | 0.5993 (4) | 0.074 (4) | 0.50 |
F10 | 0.1149 (13) | 0.3953 (11) | 0.6387 (3) | 0.048 (3) | 0.50 |
F11 | 0.0255 (16) | 0.5450 (15) | 0.5929 (5) | 0.086 (4) | 0.50 |
F12 | 0.1067 (14) | 0.2015 (14) | 0.5798 (5) | 0.078 (4) | 0.50 |
F13 | 0.2819 (11) | 0.7699 (11) | 0.5355 (4) | 0.052 (3) | 0.50 |
F14 | 0.4594 (13) | 0.9411 (12) | 0.5740 (4) | 0.055 (3) | 0.50 |
F15 | 0.2102 (13) | 0.9903 (13) | 0.5575 (4) | 0.061 (3) | 0.50 |
F16 | 0.3906 (14) | 1.1053 (11) | 0.5201 (4) | 0.051 (3) | 0.50 |
F17 | 0.2281 (13) | 0.9269 (11) | 0.4820 (5) | 0.066 (4) | 0.50 |
F18 | 0.4732 (18) | 0.8751 (13) | 0.4927 (5) | 0.080 (4) | 0.50 |
N1 | 0.6951 (6) | 0.8758 (7) | 0.7100 (2) | 0.0218 (14) | |
N2 | 0.6314 (7) | 0.6327 (6) | 0.6487 (2) | 0.0223 (14) | |
N3 | 0.5163 (7) | 0.4394 (7) | 0.7002 (3) | 0.0306 (16) | |
N4 | 0.8136 (7) | 0.5925 (6) | 0.7502 (2) | 0.0212 (14) | |
N5 | 0.5824 (7) | 0.6975 (6) | 0.7912 (2) | 0.0241 (14) | |
N6 | 0.3870 (7) | 0.7435 (7) | 0.7184 (3) | 0.0273 (15) | |
N7 | 0.9608 (12) | −0.0287 (12) | 0.8456 (4) | 0.082 (3) | |
N8 | 0.0331 (14) | 0.6614 (13) | 0.9563 (4) | 0.088 (3) | |
C1 | 0.7199 (8) | 1.0006 (9) | 0.7444 (3) | 0.0273 (18) | |
H1 | 0.6942 | 0.9936 | 0.7764 | 0.033* | |
C2 | 0.7826 (9) | 1.1392 (9) | 0.7334 (3) | 0.032 (2) | |
H2 | 0.7969 | 1.2236 | 0.7575 | 0.039* | |
C3 | 0.8230 (9) | 1.1495 (8) | 0.6865 (3) | 0.032 (2) | |
H3 | 0.8692 | 1.2396 | 0.6788 | 0.039* | |
C4 | 0.7941 (9) | 1.0242 (9) | 0.6506 (3) | 0.0291 (19) | |
H4 | 0.8165 | 1.0314 | 0.6183 | 0.035* | |
C5 | 0.7316 (8) | 0.8874 (8) | 0.6628 (3) | 0.0234 (17) | |
C6 | 0.6973 (9) | 0.7496 (9) | 0.6277 (3) | 0.0251 (17) | |
C7 | 0.7184 (11) | 0.7255 (10) | 0.5781 (3) | 0.042 (2) | |
H7 | 0.7616 | 0.8050 | 0.5635 | 0.050* | |
C8 | 0.6785 (13) | 0.5893 (11) | 0.5496 (3) | 0.056 (3) | |
H8 | 0.6959 | 0.5754 | 0.5163 | 0.067* | |
C9 | 0.6102 (12) | 0.4699 (10) | 0.5717 (3) | 0.048 (3) | |
H9 | 0.5808 | 0.3758 | 0.5533 | 0.058* | |
C10 | 0.5881 (9) | 0.4966 (8) | 0.6215 (3) | 0.0294 (19) | |
C11 | 0.5205 (9) | 0.3899 (9) | 0.6516 (3) | 0.034 (2) | |
C12 | 0.4598 (11) | 0.2427 (9) | 0.6311 (4) | 0.051 (3) | |
H12 | 0.4632 | 0.2099 | 0.5976 | 0.061* | |
C13 | 0.3950 (11) | 0.1473 (10) | 0.6612 (4) | 0.061 (3) | |
H13 | 0.3528 | 0.0503 | 0.6484 | 0.073* | |
C14 | 0.3951 (10) | 0.2002 (10) | 0.7107 (4) | 0.050 (3) | |
H14 | 0.3551 | 0.1369 | 0.7319 | 0.059* | |
C15 | 0.4541 (9) | 0.3471 (9) | 0.7297 (4) | 0.038 (2) | |
H15 | 0.4505 | 0.3815 | 0.7631 | 0.046* | |
C16 | 0.9277 (8) | 0.5350 (8) | 0.7264 (3) | 0.0251 (17) | |
H16 | 0.9201 | 0.5297 | 0.6920 | 0.030* | |
C17 | 1.0570 (9) | 0.4828 (9) | 0.7508 (3) | 0.0312 (19) | |
H17 | 1.1334 | 0.4413 | 0.7328 | 0.037* | |
C18 | 1.0729 (9) | 0.4920 (9) | 0.8014 (3) | 0.036 (2) | |
H18 | 1.1600 | 0.4586 | 0.8184 | 0.043* | |
C19 | 0.9558 (9) | 0.5523 (9) | 0.8265 (3) | 0.033 (2) | |
H19 | 0.9635 | 0.5599 | 0.8610 | 0.040* | |
C20 | 0.8264 (8) | 0.6019 (8) | 0.8006 (3) | 0.0252 (18) | |
C21 | 0.6948 (10) | 0.6671 (9) | 0.8251 (3) | 0.0304 (19) | |
C22 | 0.6838 (11) | 0.6954 (9) | 0.8747 (3) | 0.038 (2) | |
H22 | 0.7631 | 0.6723 | 0.8975 | 0.045* | |
C23 | 0.5526 (12) | 0.7590 (9) | 0.8908 (3) | 0.041 (2) | |
C24 | 0.4340 (11) | 0.7933 (9) | 0.8559 (3) | 0.041 (2) | |
H24 | 0.3463 | 0.8378 | 0.8662 | 0.049* | |
C25 | 0.4506 (9) | 0.7593 (9) | 0.8058 (3) | 0.033 (2) | |
C26 | 0.3421 (9) | 0.7893 (9) | 0.7645 (3) | 0.032 (2) | |
C27 | 0.2062 (9) | 0.8608 (9) | 0.7703 (4) | 0.042 (2) | |
H27 | 0.1808 | 0.8962 | 0.8018 | 0.051* | |
C28 | 0.1083 (10) | 0.8787 (10) | 0.7282 (4) | 0.053 (3) | |
H28 | 0.0161 | 0.9257 | 0.7312 | 0.063* | |
C29 | 0.1501 (9) | 0.8255 (9) | 0.6820 (4) | 0.041 (2) | |
H29 | 0.0854 | 0.8357 | 0.6536 | 0.049* | |
C30 | 0.2887 (9) | 0.7569 (9) | 0.6782 (4) | 0.035 (2) | |
H30 | 0.3144 | 0.7191 | 0.6470 | 0.042* | |
C31 | 0.5415 (13) | 0.7943 (11) | 0.9431 (4) | 0.058 (3) | |
C32 | 0.5330 (16) | 0.8213 (12) | 0.9860 (4) | 0.072 (4) | |
H32 | 0.5263 | 0.8427 | 1.0199 | 0.087* | |
C33 | 0.9607 (15) | 0.0376 (19) | 0.8804 (5) | 0.104 (6) | |
C34 | 0.958 (2) | 0.113 (4) | 0.9314 (8) | 0.36 (3) | |
H34A | 0.8897 | 0.0544 | 0.9486 | 0.541* | |
H34B | 0.9217 | 0.2132 | 0.9303 | 0.541* | |
H34C | 1.0603 | 0.1207 | 0.9485 | 0.541* | |
C35 | 0.1365 (14) | 0.5885 (14) | 0.9648 (4) | 0.063 (3) | |
C36 | 0.2593 (15) | 0.4921 (15) | 0.9767 (5) | 0.084 (4) | |
H36A | 0.3438 | 0.5523 | 0.9962 | 0.126* | |
H36B | 0.2941 | 0.4450 | 0.9465 | 0.126* | |
H36C | 0.2220 | 0.4148 | 0.9952 | 0.126* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Ru1 | 0.0183 (3) | 0.0179 (3) | 0.0337 (4) | −0.0009 (2) | 0.0022 (3) | 0.0091 (3) |
P1 | 0.0455 (14) | 0.0296 (13) | 0.0456 (15) | 0.0006 (11) | −0.0040 (11) | 0.0080 (11) |
P2 | 0.0167 (19) | 0.025 (2) | 0.027 (2) | 0.0045 (16) | 0.0036 (16) | 0.0105 (17) |
P3 | 0.072 (4) | 0.029 (3) | 0.035 (3) | −0.003 (2) | 0.010 (3) | −0.005 (2) |
F1 | 0.055 (4) | 0.064 (4) | 0.086 (4) | 0.028 (3) | 0.006 (3) | 0.025 (3) |
F2 | 0.067 (4) | 0.104 (6) | 0.080 (5) | −0.027 (4) | 0.019 (3) | 0.029 (4) |
F3 | 0.072 (5) | 0.057 (4) | 0.134 (6) | 0.011 (3) | −0.018 (4) | 0.044 (4) |
F4 | 0.054 (4) | 0.055 (4) | 0.083 (4) | −0.006 (3) | 0.013 (3) | 0.021 (3) |
F5 | 0.111 (6) | 0.068 (4) | 0.052 (4) | −0.030 (4) | −0.008 (4) | 0.002 (3) |
F6 | 0.092 (5) | 0.045 (4) | 0.065 (4) | −0.021 (3) | 0.003 (3) | −0.007 (3) |
F7 | 0.055 (8) | 0.095 (10) | 0.067 (8) | −0.012 (7) | −0.004 (6) | 0.038 (7) |
F8 | 0.076 (8) | 0.055 (7) | 0.009 (5) | −0.040 (6) | 0.004 (4) | 0.008 (4) |
F9 | 0.062 (8) | 0.101 (10) | 0.077 (9) | 0.020 (7) | 0.026 (7) | 0.056 (8) |
F10 | 0.083 (8) | 0.033 (6) | 0.036 (6) | 0.015 (5) | 0.047 (5) | 0.001 (4) |
F11 | 0.085 (10) | 0.062 (9) | 0.099 (10) | 0.021 (7) | −0.043 (8) | 0.001 (7) |
F12 | 0.067 (8) | 0.060 (8) | 0.098 (10) | 0.021 (7) | −0.024 (7) | −0.008 (7) |
F13 | 0.035 (6) | 0.041 (6) | 0.072 (8) | −0.027 (5) | 0.016 (5) | −0.023 (5) |
F14 | 0.073 (8) | 0.049 (7) | 0.047 (7) | 0.030 (6) | 0.006 (6) | 0.006 (5) |
F15 | 0.049 (7) | 0.059 (8) | 0.073 (8) | 0.004 (6) | −0.006 (6) | 0.013 (6) |
F16 | 0.080 (9) | 0.035 (6) | 0.035 (6) | −0.021 (6) | −0.003 (6) | 0.002 (5) |
F17 | 0.060 (7) | 0.020 (5) | 0.109 (10) | −0.015 (5) | −0.032 (7) | 0.019 (6) |
F18 | 0.113 (12) | 0.050 (8) | 0.070 (9) | −0.029 (8) | 0.033 (8) | −0.021 (6) |
N1 | 0.014 (3) | 0.018 (3) | 0.034 (4) | 0.006 (2) | −0.001 (3) | 0.003 (3) |
N2 | 0.017 (3) | 0.013 (3) | 0.036 (4) | −0.001 (2) | −0.008 (3) | 0.008 (3) |
N3 | 0.023 (4) | 0.025 (4) | 0.043 (4) | −0.009 (3) | −0.007 (3) | 0.015 (3) |
N4 | 0.019 (3) | 0.011 (3) | 0.032 (4) | −0.001 (2) | −0.002 (3) | 0.001 (3) |
N5 | 0.026 (3) | 0.011 (3) | 0.037 (4) | 0.004 (3) | 0.009 (3) | 0.007 (3) |
N6 | 0.015 (3) | 0.020 (3) | 0.048 (4) | −0.004 (3) | −0.001 (3) | 0.012 (3) |
N7 | 0.078 (7) | 0.084 (8) | 0.079 (8) | −0.020 (6) | 0.031 (6) | −0.024 (6) |
N8 | 0.096 (9) | 0.098 (9) | 0.065 (7) | 0.019 (7) | −0.022 (6) | 0.009 (6) |
C1 | 0.022 (4) | 0.022 (4) | 0.036 (5) | 0.003 (3) | 0.002 (3) | 0.000 (4) |
C2 | 0.035 (5) | 0.024 (5) | 0.037 (5) | 0.013 (4) | −0.002 (4) | 0.001 (4) |
C3 | 0.029 (4) | 0.010 (4) | 0.055 (6) | −0.004 (3) | −0.007 (4) | 0.007 (4) |
C4 | 0.025 (4) | 0.028 (5) | 0.036 (5) | −0.001 (3) | 0.000 (4) | 0.016 (4) |
C5 | 0.020 (4) | 0.021 (4) | 0.030 (4) | 0.003 (3) | 0.004 (3) | 0.004 (3) |
C6 | 0.026 (4) | 0.023 (4) | 0.026 (4) | 0.002 (3) | 0.000 (3) | 0.005 (3) |
C7 | 0.063 (6) | 0.024 (5) | 0.039 (5) | −0.005 (4) | 0.004 (5) | 0.016 (4) |
C8 | 0.100 (9) | 0.043 (6) | 0.022 (5) | 0.004 (6) | −0.002 (5) | 0.000 (4) |
C9 | 0.080 (7) | 0.021 (5) | 0.037 (6) | −0.003 (5) | −0.023 (5) | 0.003 (4) |
C10 | 0.035 (5) | 0.014 (4) | 0.037 (5) | −0.003 (3) | −0.013 (4) | 0.006 (3) |
C11 | 0.030 (5) | 0.014 (4) | 0.057 (6) | −0.012 (3) | −0.015 (4) | 0.018 (4) |
C12 | 0.059 (6) | 0.018 (5) | 0.070 (7) | −0.007 (4) | −0.031 (5) | 0.012 (4) |
C13 | 0.056 (6) | 0.024 (5) | 0.096 (9) | −0.025 (5) | −0.045 (6) | 0.035 (5) |
C14 | 0.041 (6) | 0.027 (5) | 0.079 (8) | −0.015 (4) | −0.021 (5) | 0.031 (5) |
C15 | 0.017 (4) | 0.033 (5) | 0.066 (6) | −0.011 (4) | −0.010 (4) | 0.027 (4) |
C16 | 0.023 (4) | 0.011 (4) | 0.041 (5) | −0.005 (3) | 0.006 (4) | 0.003 (3) |
C17 | 0.017 (4) | 0.020 (4) | 0.056 (6) | 0.002 (3) | 0.004 (4) | 0.004 (4) |
C18 | 0.018 (4) | 0.029 (5) | 0.059 (6) | 0.005 (3) | −0.007 (4) | 0.003 (4) |
C19 | 0.037 (5) | 0.028 (5) | 0.033 (5) | 0.005 (4) | −0.003 (4) | 0.000 (4) |
C20 | 0.021 (4) | 0.013 (4) | 0.043 (5) | 0.000 (3) | −0.001 (4) | 0.009 (3) |
C21 | 0.038 (5) | 0.024 (4) | 0.028 (5) | −0.006 (4) | 0.000 (4) | 0.006 (3) |
C22 | 0.052 (6) | 0.027 (5) | 0.035 (5) | −0.002 (4) | 0.002 (4) | 0.011 (4) |
C23 | 0.071 (7) | 0.020 (4) | 0.036 (5) | 0.000 (4) | 0.019 (5) | 0.006 (4) |
C24 | 0.049 (6) | 0.027 (5) | 0.053 (6) | 0.004 (4) | 0.028 (5) | 0.012 (4) |
C25 | 0.028 (4) | 0.021 (4) | 0.053 (6) | 0.001 (3) | 0.015 (4) | 0.010 (4) |
C26 | 0.030 (4) | 0.020 (4) | 0.049 (5) | −0.004 (3) | 0.015 (4) | 0.013 (4) |
C27 | 0.026 (5) | 0.024 (5) | 0.081 (7) | 0.000 (4) | 0.015 (5) | 0.015 (5) |
C28 | 0.024 (5) | 0.030 (5) | 0.111 (9) | 0.003 (4) | 0.017 (6) | 0.025 (6) |
C29 | 0.019 (4) | 0.021 (5) | 0.085 (7) | −0.008 (3) | −0.008 (5) | 0.033 (5) |
C30 | 0.026 (4) | 0.015 (4) | 0.066 (6) | −0.003 (3) | 0.000 (4) | 0.017 (4) |
C31 | 0.083 (8) | 0.039 (6) | 0.058 (7) | 0.019 (6) | 0.028 (6) | 0.011 (5) |
C32 | 0.134 (12) | 0.046 (7) | 0.047 (7) | 0.035 (7) | 0.036 (7) | 0.013 (5) |
C33 | 0.055 (8) | 0.147 (15) | 0.089 (11) | 0.011 (9) | −0.007 (7) | −0.058 (10) |
C34 | 0.15 (2) | 0.60 (6) | 0.23 (3) | 0.16 (3) | −0.099 (19) | −0.33 (3) |
C35 | 0.072 (8) | 0.077 (8) | 0.036 (6) | 0.026 (7) | −0.009 (5) | −0.003 (5) |
C36 | 0.082 (10) | 0.085 (10) | 0.085 (9) | 0.004 (8) | 0.004 (7) | 0.013 (7) |
Ru1—N2 | 1.964 (6) | C8—C9 | 1.411 (13) |
Ru1—N5 | 1.967 (6) | C9—C10 | 1.385 (12) |
Ru1—N6 | 2.057 (6) | C10—C11 | 1.461 (11) |
Ru1—N1 | 2.064 (6) | C11—C12 | 1.410 (11) |
Ru1—N3 | 2.073 (6) | C12—C13 | 1.384 (13) |
Ru1—N4 | 2.083 (6) | C13—C14 | 1.374 (14) |
P1—F2 | 1.577 (6) | C14—C15 | 1.394 (12) |
P1—F6 | 1.583 (6) | C16—C17 | 1.381 (10) |
P1—F1 | 1.585 (6) | C17—C18 | 1.364 (11) |
P1—F3 | 1.588 (6) | C18—C19 | 1.378 (11) |
P1—F5 | 1.596 (6) | C19—C20 | 1.389 (11) |
P1—F4 | 1.602 (6) | C20—C21 | 1.489 (11) |
P2—F10 | 1.453 (11) | C21—C22 | 1.360 (11) |
P2—F8 | 1.547 (9) | C22—C23 | 1.386 (12) |
P2—F11 | 1.551 (13) | C23—C24 | 1.404 (13) |
P2—F9 | 1.568 (12) | C23—C31 | 1.438 (13) |
P2—F7 | 1.581 (12) | C24—C25 | 1.388 (11) |
P2—F12 | 1.597 (12) | C25—C26 | 1.457 (12) |
P3—F17 | 1.435 (12) | C26—C27 | 1.385 (11) |
P3—F15 | 1.551 (13) | C27—C28 | 1.390 (13) |
P3—F13 | 1.567 (11) | C28—C29 | 1.381 (13) |
P3—F16 | 1.597 (11) | C29—C30 | 1.387 (11) |
P3—F14 | 1.610 (12) | C31—C32 | 1.175 (13) |
P3—F18 | 1.613 (15) | C33—C34 | 1.47 (2) |
F16—F18i | 1.278 (16) | C35—C36 | 1.439 (16) |
F18—F16i | 1.278 (16) | C1—H1 | 0.93 |
N1—C1 | 1.355 (9) | C2—H2 | 0.93 |
N1—C5 | 1.370 (9) | C3—H3 | 0.93 |
N2—C10 | 1.353 (9) | C4—H4 | 0.93 |
N2—C6 | 1.368 (9) | C7—H7 | 0.93 |
N3—C15 | 1.344 (10) | C8—H8 | 0.93 |
N3—C11 | 1.350 (10) | C9—H9 | 0.93 |
N4—C16 | 1.330 (9) | C12—H12 | 0.93 |
N4—C20 | 1.361 (9) | C13—H13 | 0.93 |
N5—C21 | 1.338 (10) | C14—H14 | 0.93 |
N5—C25 | 1.370 (10) | C15—H15 | 0.93 |
N6—C30 | 1.344 (10) | C16—H16 | 0.93 |
N6—C26 | 1.373 (10) | C17—H17 | 0.93 |
N7—C33 | 1.054 (13) | C18—H18 | 0.93 |
N8—C35 | 1.157 (14) | C19—H19 | 0.93 |
C1—C2 | 1.395 (11) | C22—H22 | 0.93 |
C2—C3 | 1.371 (11) | C24—H24 | 0.93 |
C3—C4 | 1.383 (11) | C27—H27 | 0.93 |
C4—C5 | 1.392 (10) | C28—H28 | 0.93 |
C5—C6 | 1.456 (10) | C29—H29 | 0.93 |
C6—C7 | 1.376 (11) | C30—H30 | 0.93 |
C7—C8 | 1.363 (12) | C32—H32 | 0.93 |
N2—Ru1—N5 | 178.3 (3) | N2—C6—C7 | 118.3 (7) |
N2—Ru1—N6 | 101.3 (3) | N2—C6—C5 | 112.5 (6) |
N5—Ru1—N6 | 79.4 (3) | C7—C6—C5 | 129.1 (7) |
N2—Ru1—N1 | 79.0 (2) | C8—C7—C6 | 122.4 (8) |
N5—Ru1—N1 | 99.5 (2) | C7—C8—C9 | 118.6 (9) |
N6—Ru1—N1 | 89.9 (2) | C10—C9—C8 | 118.2 (8) |
N2—Ru1—N3 | 78.8 (3) | N2—C10—C9 | 121.4 (7) |
N5—Ru1—N3 | 102.6 (3) | N2—C10—C11 | 111.3 (7) |
N6—Ru1—N3 | 92.4 (2) | C9—C10—C11 | 127.3 (7) |
N1—Ru1—N3 | 157.7 (3) | N3—C11—C12 | 121.0 (8) |
N2—Ru1—N4 | 100.9 (2) | N3—C11—C10 | 117.0 (7) |
N5—Ru1—N4 | 78.3 (2) | C12—C11—C10 | 122.1 (9) |
N6—Ru1—N4 | 157.7 (3) | C13—C12—C11 | 119.6 (10) |
N1—Ru1—N4 | 94.5 (2) | C14—C13—C12 | 118.0 (9) |
N3—Ru1—N4 | 91.7 (2) | C13—C14—C15 | 121.1 (9) |
F2—P1—F6 | 90.3 (4) | N3—C15—C14 | 120.6 (9) |
F2—P1—F1 | 91.5 (4) | N4—C16—C17 | 122.4 (8) |
F6—P1—F1 | 90.6 (4) | C18—C17—C16 | 120.1 (8) |
F2—P1—F3 | 89.5 (4) | C17—C18—C19 | 118.0 (8) |
F6—P1—F3 | 90.3 (4) | C18—C19—C20 | 120.4 (8) |
F1—P1—F3 | 178.7 (4) | N4—C20—C19 | 120.6 (7) |
F2—P1—F5 | 91.2 (4) | N4—C20—C21 | 115.9 (6) |
F6—P1—F5 | 178.4 (4) | C19—C20—C21 | 123.5 (7) |
F1—P1—F5 | 89.4 (4) | N5—C21—C22 | 122.1 (8) |
F3—P1—F5 | 89.7 (4) | N5—C21—C20 | 110.8 (7) |
F2—P1—F4 | 178.3 (4) | C22—C21—C20 | 127.0 (8) |
F6—P1—F4 | 88.0 (3) | C21—C22—C23 | 119.0 (8) |
F1—P1—F4 | 88.2 (3) | C22—C23—C24 | 119.8 (8) |
F3—P1—F4 | 90.8 (4) | C22—C23—C31 | 119.7 (9) |
F5—P1—F4 | 90.4 (4) | C24—C23—C31 | 120.5 (9) |
F10—P2—F8 | 177.8 (6) | C25—C24—C23 | 118.6 (8) |
F10—P2—F11 | 86.5 (6) | N5—C25—C24 | 120.0 (8) |
F8—P2—F11 | 94.6 (7) | N5—C25—C26 | 113.5 (7) |
F10—P2—F9 | 86.5 (6) | C24—C25—C26 | 126.4 (8) |
F8—P2—F9 | 95.4 (6) | N6—C26—C27 | 121.9 (8) |
F11—P2—F9 | 89.2 (8) | N6—C26—C25 | 114.4 (7) |
F10—P2—F7 | 92.1 (6) | C27—C26—C25 | 123.7 (8) |
F8—P2—F7 | 85.9 (6) | C26—C27—C28 | 118.8 (9) |
F11—P2—F7 | 91.1 (8) | C29—C28—C27 | 119.0 (8) |
F9—P2—F7 | 178.6 (6) | C28—C29—C30 | 119.9 (9) |
F10—P2—F12 | 92.2 (6) | N6—C30—C29 | 121.8 (9) |
F8—P2—F12 | 86.8 (6) | C32—C31—C23 | 179.1 (11) |
F11—P2—F12 | 178.3 (8) | N7—C33—C34 | 173 (2) |
F9—P2—F12 | 89.6 (7) | N8—C35—C36 | 176.8 (15) |
F7—P2—F12 | 90.1 (7) | N1—C1—H1 | 119 |
F17—P3—F15 | 88.9 (8) | C2—C1—H1 | 119 |
F17—P3—F13 | 92.5 (6) | C1—C2—H2 | 121 |
F15—P3—F13 | 85.6 (6) | C3—C2—H2 | 120 |
F17—P3—F16 | 90.7 (6) | C2—C3—H3 | 121 |
F15—P3—F16 | 89.8 (7) | C4—C3—H3 | 120 |
F13—P3—F16 | 174.3 (6) | C3—C4—H4 | 120 |
F17—P3—F14 | 179.5 (8) | C5—C4—H4 | 120 |
F15—P3—F14 | 90.6 (6) | C6—C7—H7 | 119 |
F13—P3—F14 | 87.7 (6) | C8—C7—H7 | 119 |
F16—P3—F14 | 89.1 (6) | C7—C8—H8 | 121 |
F17—P3—F18 | 92.4 (8) | C9—C8—H8 | 121 |
F15—P3—F18 | 178.6 (8) | C8—C9—H9 | 121 |
F13—P3—F18 | 94.8 (6) | C10—C9—H9 | 121 |
F16—P3—F18 | 89.8 (6) | C11—C12—H12 | 120 |
F14—P3—F18 | 88.1 (7) | C13—C12—H12 | 120 |
F18i—F16—P3 | 115.0 (10) | C12—C13—H13 | 121 |
F16i—F18—P3 | 149.8 (10) | C14—C13—H13 | 121 |
C1—N1—C5 | 118.6 (6) | C13—C14—H14 | 120 |
C1—N1—Ru1 | 127.3 (5) | C15—C14—H14 | 119 |
C5—N1—Ru1 | 114.1 (5) | N3—C15—H15 | 120 |
C10—N2—C6 | 121.0 (7) | C14—C15—H15 | 120 |
C10—N2—Ru1 | 119.9 (5) | N4—C16—H16 | 119 |
C6—N2—Ru1 | 119.1 (5) | C17—C16—H16 | 119 |
C15—N3—C11 | 119.8 (7) | C16—C17—H17 | 120 |
C15—N3—Ru1 | 127.2 (6) | C18—C17—H17 | 120 |
C11—N3—Ru1 | 113.0 (5) | C17—C18—H18 | 121 |
C16—N4—C20 | 118.5 (6) | C19—C18—H18 | 121 |
C16—N4—Ru1 | 127.9 (5) | C18—C19—H19 | 120 |
C20—N4—Ru1 | 113.5 (5) | C20—C19—H19 | 120 |
C21—N5—C25 | 120.5 (7) | C21—C22—H22 | 121 |
C21—N5—Ru1 | 121.4 (5) | C23—C22—H22 | 120 |
C25—N5—Ru1 | 118.1 (5) | C23—C24—H24 | 121 |
C30—N6—C26 | 118.4 (7) | C25—C24—H24 | 121 |
C30—N6—Ru1 | 127.3 (6) | C26—C27—H27 | 121 |
C26—N6—Ru1 | 114.4 (5) | C28—C27—H27 | 121 |
N1—C1—C2 | 122.2 (7) | C27—C28—H28 | 120 |
C3—C2—C1 | 119.2 (7) | C29—C28—H28 | 121 |
C2—C3—C4 | 119.2 (7) | C28—C29—H29 | 120 |
C3—C4—C5 | 120.3 (7) | C30—C29—H29 | 120 |
N1—C5—C4 | 120.6 (7) | N6—C30—H30 | 119 |
N1—C5—C6 | 115.2 (6) | C29—C30—H30 | 119 |
C4—C5—C6 | 124.2 (7) | C31—C32—H32 | 180 |
Symmetry code: (i) −x+1, −y+2, −z+1. |
Experimental details
Crystal data | |
Chemical formula | [Ru(C15H11N3)(C17H11N3)](PF6)2·2C2H3N |
Mr | 963.67 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 140 |
a, b, c (Å) | 8.704 (2), 8.860 (2), 27.277 (7) |
α, β, γ (°) | 96.876 (4), 95.619 (3), 93.023 (3) |
V (Å3) | 2073.9 (10) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.55 |
Crystal size (mm) | 0.10 × 0.08 × 0.06 |
Data collection | |
Diffractometer | Bruker D8 with APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2007) |
Tmin, Tmax | 0.947, 0.968 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 19870, 7496, 5137 |
Rint | 0.081 |
(sin θ/λ)max (Å−1) | 0.602 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.084, 0.228, 1.25 |
No. of reflections | 7496 |
No. of parameters | 596 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 1.75, −0.94 |
Computer programs: APEX2 (Bruker, 2007), SAINT-Plus (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008), publCIF (Westrip, 2010).
Acknowledgements
Support by the US Department of Energy through the Laboratory Directed Research and Development (LDRD) program at LANL is gratefully acknowledged.
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.
The compound [RuII(tpy)(tpy')](PF6)2×2MeCN crystallized in the triclinic space group (P1) from an acetonitrile solution. The crystal structure of its dication [Ru(tpy)(tpy')]2+ (I) is reported here for the first time, despite its well demonstrated relevance as a metallo-synthon unit into the construction of alkyne-bridged polyad arrays with optical/electronic applications (for example, see: Benniston et al., 2005; Grosshenny et al., 1996; Ziessel et al., 2004) and, more recently, as interesting precursors to optically/electrochemically active interfacial assemblies via surface click chemistry at the alkynyl group (for example, see: Ruther et al., 2011).
The only other crystallographically characterized compound featuring the {Ru(tpy–C≡C)} fragment is the homoleptic complex [RuII(tpy")2](PF6)2 (II; tpy" = S-(4-[2,2':6',2"]terpyridin-4'-ylethynyl-phenyl ester), which was applied in studies of molecular electronics involving charge transport through single molecules (II) in break-junction configurations (Ruben et al., 2008). In this case, the compound also crystallized in the triclinic space group (P1). In II, the two elongated ligands pointed along the long axis of the complex, with only slight distortion across the metal center (N–Ru–N angle: 178.9 (4)°). The mean Ru—N bond distances (1.966 (8) Å for the central nitrogen and 2.066 (10) Å for the outer nitrogen atoms trans to each other) as well as the tpy" bite angles (158.3 (4)°) are very similar to those observed for I.
These distances and angles are also in very good agreement with typical values reported for [Ru(tpy)2]2+ (e.g., Lashgari et al., 1999; Scudder et al., 2005). The bite angle of terpyridines is well known to be far from the ideal 180° due to the unfavorable N,N,N geometric configuration of the mer-terdentate ligand (Hammarström & Johansson, 2010). In I, the two terpyridyl ligands are approximately planar, with only a slight bending towards the outer ring atoms (maximum deviation from planarity: 0.093 (10) Å for atom C13 at tpy and 0.110 (8) Å for atom C30 at tpy'). The acetylenic group (–C31≡C32–H32) lies along the main axis passing through the metal center as well as in the same plane as its adjacent terpyridyl moiety, with a maximum deviation of only 0.071 (11) Å (C32) from coplanarity. The length of the triple bond between C31 and C32 is 1.175 (13) Å.