organic compounds
8-(2,2,2-Trifluoroethoxy)quinolinium perchlorate–8-(2,2,2-trifluoroethoxy)quinoline (1/1)
aDepartment of Chemistry, Shandong Normal University, Jinan 250014, People's Republic of China
*Correspondence e-mail: chdsguo@sdnu.edu.cn
The title compound, C11H9F3NO+·ClO4−·C11H8F3NO or [(C11H8F3NO)H(C11H8F3NO)]ClO4, contains two 8-(2,2,2-trifluoroethoxy)quinoline molecules, one of which combines a proton from perchloric acid to form the corresponding quinolinium cation. The quinolinium and quinoline rings form a cationic unit via an intermolecular N—H⋯N hydrogen bond. The heterocyclic units are almost perpendicular to each other [interplanar angle 86.97 (6)°]. In the crystal, each perchlorate anion bridges two adjacent cationic units and creates a chain by a combination of C—H⋯O hydrogen bonds. Two inversion-related chains associate into a molecular column by π–π stacking interactions between the quinolinium rings. The perpendicular and centroid–centroid distances between adjacent quinolinium rings are 3.501 (3) and 3.634 (9) Å, respectively. The molecular column is linked to its neighbors, creating a two-dimensional network via the weak π–π stacking between the quinoline rings [perpendicular and centroid–centroid separations 3.340 (4) and 4.408 (4) Å, respectively]. Finally, a three-dimensional framework is formed by a combination of intermolecular C—F⋯π contacts. One –CF3 group is disordered over two positions of equal occupancy.
Related literature
For background to quinoline derivatives, see: Moret et al. (2006); Kalita et al. (2009). For related structures, see: Ouyang & Khoo et al. (1998); Karmakar et al. (2009); Al-Mandhary & Steel (2003); Zhang et al. (2006); Zheng et al. (2006). For π–π stacking, see: Kalita & Baruah (2010); Chen et al. (2005); Liang et al. (2002). For C—F⋯π contacts, see: Prasanna & Row (2000); Saraogi et al. (2003); Choudhury & Row (2004).
Experimental
Crystal data
|
Refinement
|
Data collection: SMART (Bruker, 1999); cell SAINT (Bruker, 1999); data reduction: SAINT; 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: SHELXTL.
Supporting information
10.1107/S1600536811013250/im2278sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811013250/im2278Isup2.hkl
A suspension of 8-hydroxyquinoline (0.200 g, 1.378 mmol), anhydrous KOH (0.093 g, 1.657 mmol) and 2,2,2-trifluoroethyl-4-methylbenzenesulfonate (0.385 g, 1.514 mmol) in dry NMP (5 ml) was stirred for 5 h at 393 K and then cooled to room temperature. The resulting mixture was neutralized with 5% aqueous HCl and extracted with CH2Cl2. The organic layer was separated and washed with saturated sodium hydrogen carbonate and brine, and dried over anhydrous MgSO4. Removal of the solvent under reduced pressure gave 8-(2,2,2-trifluoroethoxy)-quinoline as a yellow solid (yield 73%), which was purified by flash
(EtOAc/petroleum ether = 1:3, RF = 1/2).Single crystals of the title complex suitable for X-ray analysis were obtained from a solution of Ni(ClO4)2 (0.013 g, 0.050 mmol) in MeOH (1 ml) which was layered onto a solution of 8-(2,2,2-trifluoroethoxy)-quinoline (0.012 g, 0.053 mmol) in CH2Cl2 (1 ml) at 298 K.
All non-hydrogen atoms were refined with anisotropic displacement parameters. Hydrogen atoms attached to anisotropically refined atoms were placed in geometrically idealized positions and included as riding atoms with C—H = 0.93Å and Uiso(H) = 1.2Ueq(C) (aromatic); C—H = 0.97Å and Uiso(H) = 1.2Ueq(C) (methylene); N—H = 0.86Å and Uiso(H) = 1.2Ueq(N). In the title molecule, one trifluoromethyl group was disordered over two orientations, with refined site occupation factors of 0.5: 0.5.
Data collection: SMART (Bruker, 1999); cell
SAINT (Bruker, 1999); data reduction: SAINT (Bruker, 1999); 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: SHELXTL (Sheldrick, 2008).Fig. 1. Molecular structure of the title complex, with displacement ellipsoids drawn at the 30% probability level. | |
Fig. 2. Hydrogen-bonded cationic unit, with weak C—F···π contacts. For the sake of clarity, the disordered moieties and the H atoms not involved in hydrogen bonding have been omitted. | |
Fig. 3. Molecular column formed by hydrogen bonds and π–π stackings, viewed along the a axis. The disordered moieties and H atoms not involved in hydrogen bonding have been omitted for clarity. [Symmetry codes: (i) -x + 1, -y + 1, -z + 1; (ii) -x + 1, -y + 1, -z + 2]. |
C11H9F3NO+·ClO4−·C11H8F3NO | Z = 2 |
Mr = 554.83 | F(000) = 564 |
Triclinic, P1 | Dx = 1.564 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 9.462 (2) Å | Cell parameters from 2404 reflections |
b = 11.229 (3) Å | θ = 2.5–25.1° |
c = 11.832 (3) Å | µ = 0.25 mm−1 |
α = 82.910 (3)° | T = 293 K |
β = 77.048 (3)° | Block, colourless |
γ = 74.536 (3)° | 0.50 × 0.32 × 0.25 mm |
V = 1178.0 (5) Å3 |
Bruker SMART CCD area-detector diffractometer | 4364 independent reflections |
Radiation source: fine-focus sealed tube | 3400 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.021 |
phi and ω scans | θmax = 25.6°, θmin = 1.8° |
Absorption correction: multi-scan (SADABS; Bruker, 1999) | h = −11→8 |
Tmin = 0.884, Tmax = 0.940 | k = −13→9 |
6301 measured reflections | l = −14→14 |
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)] = 0.050 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.137 | H-atom parameters constrained |
S = 1.02 | w = 1/[σ2(Fo2) + (0.068P)2 + 0.293P] where P = (Fo2 + 2Fc2)/3 |
4364 reflections | (Δ/σ)max < 0.001 |
361 parameters | Δρmax = 0.25 e Å−3 |
0 restraints | Δρmin = −0.27 e Å−3 |
C11H9F3NO+·ClO4−·C11H8F3NO | γ = 74.536 (3)° |
Mr = 554.83 | V = 1178.0 (5) Å3 |
Triclinic, P1 | Z = 2 |
a = 9.462 (2) Å | Mo Kα radiation |
b = 11.229 (3) Å | µ = 0.25 mm−1 |
c = 11.832 (3) Å | T = 293 K |
α = 82.910 (3)° | 0.50 × 0.32 × 0.25 mm |
β = 77.048 (3)° |
Bruker SMART CCD area-detector diffractometer | 4364 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 1999) | 3400 reflections with I > 2σ(I) |
Tmin = 0.884, Tmax = 0.940 | Rint = 0.021 |
6301 measured reflections |
R[F2 > 2σ(F2)] = 0.050 | 0 restraints |
wR(F2) = 0.137 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.25 e Å−3 |
4364 reflections | Δρmin = −0.27 e Å−3 |
361 parameters |
Experimental. ^1Ĥ NMR (300 MHz, CDCl~3~):δ 8.97 (dd, 1H, J = 4.04 Hz, 1.52 Hz), 8.17 (d, 1H, J = 7.52 Hz), 7.54–7.44 (m, 3H), 7.25 (d, H, J = 7.65 Hz), 4.78 (q, 2H, J = 8.33 Hz). |
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. |
x | y | z | Uiso*/Ueq | Occ. (<1) | |
C1 | 1.1468 (3) | 0.6885 (3) | 0.6473 (2) | 0.0583 (6) | |
H1 | 1.1569 | 0.6034 | 0.6558 | 0.070* | |
C2 | 1.2727 (3) | 0.7332 (3) | 0.6049 (2) | 0.0694 (8) | |
H2 | 1.3662 | 0.6791 | 0.5845 | 0.083* | |
C3 | 1.2575 (3) | 0.8571 (3) | 0.5937 (2) | 0.0682 (8) | |
H3 | 1.3416 | 0.8880 | 0.5653 | 0.082* | |
C4 | 1.1164 (3) | 0.9399 (2) | 0.6243 (2) | 0.0548 (6) | |
C5 | 0.9930 (3) | 0.8878 (2) | 0.66440 (18) | 0.0448 (5) | |
C6 | 1.0927 (4) | 1.0696 (3) | 0.6165 (2) | 0.0677 (8) | |
H6 | 1.1731 | 1.1056 | 0.5909 | 0.081* | |
C7 | 0.9530 (4) | 1.1412 (3) | 0.6463 (2) | 0.0738 (8) | |
H7 | 0.9385 | 1.2268 | 0.6415 | 0.089* | |
C8 | 0.8288 (3) | 1.0905 (2) | 0.6843 (2) | 0.0643 (7) | |
H8 | 0.7334 | 1.1424 | 0.7027 | 0.077* | |
C9 | 0.8474 (3) | 0.9661 (2) | 0.6943 (2) | 0.0505 (6) | |
C10 | 0.5911 (3) | 0.9754 (3) | 0.7691 (3) | 0.0844 (10) | |
H10A | 0.5518 | 1.0228 | 0.7037 | 0.101* | |
H10B | 0.5902 | 1.0325 | 0.8245 | 0.101* | |
C12 | 0.7912 (3) | 0.5853 (2) | 0.6481 (2) | 0.0637 (7) | |
H12 | 0.8219 | 0.6259 | 0.5770 | 0.076* | |
C13 | 0.7078 (4) | 0.4983 (3) | 0.6515 (3) | 0.0731 (8) | |
H13 | 0.6806 | 0.4839 | 0.5845 | 0.088* | |
C14 | 0.6678 (3) | 0.4362 (2) | 0.7528 (3) | 0.0687 (8) | |
H14 | 0.6140 | 0.3772 | 0.7557 | 0.082* | |
C15 | 0.7062 (3) | 0.4590 (2) | 0.8546 (2) | 0.0533 (6) | |
C16 | 0.7845 (2) | 0.55191 (19) | 0.8454 (2) | 0.0449 (5) | |
C17 | 0.6663 (3) | 0.3978 (2) | 0.9643 (3) | 0.0664 (7) | |
H17 | 0.6164 | 0.3355 | 0.9710 | 0.080* | |
C18 | 0.7003 (3) | 0.4296 (2) | 1.0592 (3) | 0.0670 (7) | |
H18 | 0.6739 | 0.3884 | 1.1308 | 0.080* | |
C19 | 0.7750 (3) | 0.5238 (2) | 1.0520 (2) | 0.0574 (6) | |
H19 | 0.7962 | 0.5450 | 1.1188 | 0.069* | |
C20 | 0.8163 (2) | 0.5841 (2) | 0.9478 (2) | 0.0465 (5) | |
C21 | 0.9028 (3) | 0.7245 (2) | 1.0323 (2) | 0.0550 (6) | |
H21A | 0.9774 | 0.6653 | 1.0687 | 0.066* | |
H21B | 0.8083 | 0.7397 | 1.0876 | 0.066* | |
C22 | 0.9496 (3) | 0.8415 (3) | 0.9960 (2) | 0.0621 (7) | |
Cl1 | 0.35067 (7) | 0.30823 (6) | 0.64594 (5) | 0.0564 (2) | |
F4 | 0.9743 (3) | 0.88475 (17) | 1.08657 (15) | 0.0965 (6) | |
F5 | 1.07304 (19) | 0.82890 (16) | 0.91311 (15) | 0.0783 (5) | |
F6 | 0.8460 (2) | 0.92888 (15) | 0.95375 (16) | 0.0850 (5) | |
N1 | 1.0134 (2) | 0.76298 (17) | 0.67574 (16) | 0.0463 (4) | |
H1A | 0.9374 | 0.7321 | 0.7021 | 0.056* | |
N2 | 0.8280 (2) | 0.61195 (17) | 0.74111 (17) | 0.0482 (5) | |
O1 | 0.73864 (18) | 0.90405 (15) | 0.73088 (16) | 0.0613 (5) | |
O2 | 0.88758 (18) | 0.67771 (15) | 0.93048 (13) | 0.0526 (4) | |
O3 | 0.4147 (3) | 0.4098 (2) | 0.6013 (2) | 0.0932 (7) | |
O4 | 0.4074 (2) | 0.25456 (19) | 0.74758 (18) | 0.0835 (6) | |
O5 | 0.3897 (3) | 0.2197 (2) | 0.5613 (2) | 0.0979 (8) | |
O6 | 0.1932 (2) | 0.3522 (2) | 0.6752 (2) | 0.0888 (7) | |
C11 | 0.4994 (4) | 0.8884 (4) | 0.8241 (4) | 0.0902 (10) | 0.50 |
F1 | 0.5026 (16) | 0.8110 (15) | 0.7456 (17) | 0.177 (7) | 0.50 |
F2 | 0.3618 (17) | 0.9521 (18) | 0.8772 (11) | 0.131 (4) | 0.50 |
F3 | 0.5473 (15) | 0.8205 (11) | 0.9134 (14) | 0.118 (5) | 0.50 |
C11W | 0.4994 (4) | 0.8884 (4) | 0.8241 (4) | 0.0902 (10) | 0.50 |
F1W | 0.5117 (10) | 0.7933 (8) | 0.7704 (12) | 0.105 (4) | 0.50 |
F2W | 0.3555 (16) | 0.9444 (18) | 0.8260 (11) | 0.109 (3) | 0.50 |
F3W | 0.5318 (19) | 0.8454 (16) | 0.9246 (13) | 0.142 (6) | 0.50 |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0535 (15) | 0.0587 (15) | 0.0562 (15) | −0.0040 (12) | −0.0086 (12) | −0.0055 (12) |
C2 | 0.0472 (15) | 0.085 (2) | 0.0672 (18) | −0.0088 (14) | −0.0025 (13) | −0.0029 (15) |
C3 | 0.0540 (16) | 0.094 (2) | 0.0623 (17) | −0.0336 (15) | −0.0074 (13) | −0.0012 (15) |
C4 | 0.0612 (16) | 0.0688 (16) | 0.0412 (13) | −0.0279 (13) | −0.0108 (11) | −0.0022 (11) |
C5 | 0.0539 (13) | 0.0484 (13) | 0.0347 (11) | −0.0179 (11) | −0.0090 (10) | −0.0007 (9) |
C6 | 0.087 (2) | 0.0718 (18) | 0.0563 (16) | −0.0452 (17) | −0.0110 (15) | 0.0005 (13) |
C7 | 0.116 (3) | 0.0494 (15) | 0.0600 (17) | −0.0323 (17) | −0.0124 (17) | −0.0016 (13) |
C8 | 0.0779 (18) | 0.0474 (14) | 0.0599 (16) | −0.0087 (13) | −0.0078 (14) | −0.0004 (12) |
C9 | 0.0564 (14) | 0.0476 (13) | 0.0445 (13) | −0.0114 (11) | −0.0081 (11) | 0.0008 (10) |
C10 | 0.0535 (17) | 0.0661 (18) | 0.111 (3) | 0.0037 (14) | 0.0015 (16) | 0.0071 (17) |
C12 | 0.0788 (19) | 0.0615 (16) | 0.0556 (16) | −0.0193 (14) | −0.0209 (14) | −0.0046 (12) |
C13 | 0.085 (2) | 0.0695 (18) | 0.080 (2) | −0.0252 (16) | −0.0348 (17) | −0.0145 (16) |
C14 | 0.0658 (18) | 0.0522 (15) | 0.099 (2) | −0.0214 (13) | −0.0283 (16) | −0.0109 (15) |
C15 | 0.0451 (13) | 0.0400 (12) | 0.0764 (17) | −0.0112 (10) | −0.0144 (12) | −0.0041 (11) |
C16 | 0.0404 (12) | 0.0361 (11) | 0.0566 (14) | −0.0069 (9) | −0.0101 (10) | −0.0027 (10) |
C17 | 0.0574 (16) | 0.0501 (15) | 0.093 (2) | −0.0240 (12) | −0.0120 (15) | 0.0066 (14) |
C18 | 0.0654 (17) | 0.0598 (16) | 0.0700 (18) | −0.0220 (14) | −0.0037 (14) | 0.0135 (13) |
C19 | 0.0573 (15) | 0.0566 (15) | 0.0567 (15) | −0.0169 (12) | −0.0069 (12) | 0.0003 (12) |
C20 | 0.0437 (12) | 0.0412 (12) | 0.0534 (14) | −0.0109 (10) | −0.0062 (10) | −0.0035 (10) |
C21 | 0.0618 (15) | 0.0595 (15) | 0.0467 (13) | −0.0199 (12) | −0.0097 (11) | −0.0066 (11) |
C22 | 0.0790 (19) | 0.0619 (16) | 0.0541 (15) | −0.0259 (15) | −0.0184 (14) | −0.0094 (12) |
Cl1 | 0.0547 (4) | 0.0556 (4) | 0.0571 (4) | −0.0178 (3) | −0.0036 (3) | −0.0017 (3) |
F4 | 0.1570 (19) | 0.0919 (12) | 0.0696 (11) | −0.0634 (13) | −0.0396 (12) | −0.0119 (9) |
F5 | 0.0817 (11) | 0.0814 (11) | 0.0788 (11) | −0.0408 (9) | −0.0069 (9) | −0.0032 (9) |
F6 | 0.1038 (13) | 0.0591 (10) | 0.0926 (13) | −0.0115 (9) | −0.0315 (11) | −0.0039 (9) |
N1 | 0.0444 (11) | 0.0473 (11) | 0.0459 (11) | −0.0131 (9) | −0.0054 (8) | −0.0011 (8) |
N2 | 0.0519 (11) | 0.0442 (10) | 0.0500 (11) | −0.0117 (9) | −0.0124 (9) | −0.0051 (8) |
O1 | 0.0449 (9) | 0.0506 (10) | 0.0792 (12) | −0.0075 (8) | −0.0004 (8) | −0.0011 (9) |
O2 | 0.0648 (10) | 0.0551 (9) | 0.0453 (9) | −0.0284 (8) | −0.0091 (8) | −0.0050 (7) |
O3 | 0.1065 (17) | 0.0857 (15) | 0.1007 (17) | −0.0546 (14) | −0.0250 (13) | 0.0195 (12) |
O4 | 0.0875 (15) | 0.0769 (13) | 0.0738 (13) | −0.0045 (11) | −0.0184 (11) | 0.0110 (11) |
O5 | 0.0924 (16) | 0.1109 (18) | 0.0948 (16) | −0.0381 (14) | 0.0101 (13) | −0.0478 (14) |
O6 | 0.0554 (12) | 0.0968 (16) | 0.1055 (17) | −0.0104 (11) | −0.0081 (11) | −0.0077 (13) |
C11 | 0.0475 (18) | 0.089 (3) | 0.120 (4) | −0.0082 (17) | 0.0047 (19) | −0.010 (3) |
F1 | 0.109 (7) | 0.217 (14) | 0.235 (12) | −0.025 (7) | −0.069 (7) | −0.097 (10) |
F2 | 0.054 (5) | 0.124 (6) | 0.179 (12) | 0.000 (4) | 0.034 (7) | −0.030 (9) |
F3 | 0.084 (5) | 0.082 (3) | 0.155 (12) | −0.026 (3) | 0.021 (5) | 0.038 (5) |
C11W | 0.0475 (18) | 0.089 (3) | 0.120 (4) | −0.0082 (17) | 0.0047 (19) | −0.010 (3) |
F1W | 0.056 (4) | 0.077 (4) | 0.181 (9) | −0.031 (3) | 0.001 (4) | −0.023 (5) |
F2W | 0.045 (3) | 0.128 (5) | 0.143 (8) | −0.010 (3) | 0.007 (5) | −0.041 (7) |
F3W | 0.142 (11) | 0.194 (13) | 0.093 (7) | −0.070 (9) | −0.007 (6) | 0.002 (7) |
C1—N1 | 1.312 (3) | C14—H14 | 0.9300 |
C1—C2 | 1.383 (4) | C15—C16 | 1.413 (3) |
C1—H1 | 0.9300 | C15—C17 | 1.414 (4) |
C2—C3 | 1.352 (4) | C16—N2 | 1.364 (3) |
C2—H2 | 0.9300 | C16—C20 | 1.421 (3) |
C3—C4 | 1.408 (4) | C17—C18 | 1.346 (4) |
C3—H3 | 0.9300 | C17—H17 | 0.9300 |
C4—C5 | 1.406 (3) | C18—C19 | 1.404 (4) |
C4—C6 | 1.408 (4) | C18—H18 | 0.9300 |
C5—N1 | 1.357 (3) | C19—C20 | 1.361 (3) |
C5—C9 | 1.418 (3) | C19—H19 | 0.9300 |
C6—C7 | 1.346 (4) | C20—O2 | 1.365 (3) |
C6—H6 | 0.9300 | C21—O2 | 1.422 (3) |
C7—C8 | 1.401 (4) | C21—C22 | 1.480 (4) |
C7—H7 | 0.9300 | C21—H21A | 0.9700 |
C8—C9 | 1.354 (3) | C21—H21B | 0.9700 |
C8—H8 | 0.9300 | C22—F4 | 1.319 (3) |
C9—O1 | 1.357 (3) | C22—F6 | 1.326 (3) |
C10—O1 | 1.416 (3) | C22—F5 | 1.334 (3) |
C10—C11 | 1.474 (5) | Cl1—O6 | 1.415 (2) |
C10—H10A | 0.9700 | Cl1—O5 | 1.418 (2) |
C10—H10B | 0.9700 | Cl1—O3 | 1.423 (2) |
C12—N2 | 1.316 (3) | Cl1—O4 | 1.427 (2) |
C12—C13 | 1.402 (4) | N1—H1A | 0.8600 |
C12—H12 | 0.9300 | C11—F3 | 1.317 (15) |
C13—C14 | 1.341 (4) | C11—F1 | 1.338 (17) |
C13—H13 | 0.9300 | C11—F2 | 1.359 (15) |
C14—C15 | 1.403 (4) | ||
N1—C1—C2 | 121.7 (3) | N2—C16—C15 | 121.5 (2) |
N1—C1—H1 | 119.1 | N2—C16—C20 | 119.7 (2) |
C2—C1—H1 | 119.1 | C15—C16—C20 | 118.8 (2) |
C3—C2—C1 | 118.9 (3) | C18—C17—C15 | 120.2 (2) |
C3—C2—H2 | 120.6 | C18—C17—H17 | 119.9 |
C1—C2—H2 | 120.6 | C15—C17—H17 | 119.9 |
C2—C3—C4 | 121.0 (3) | C17—C18—C19 | 121.3 (3) |
C2—C3—H3 | 119.5 | C17—C18—H18 | 119.4 |
C4—C3—H3 | 119.5 | C19—C18—H18 | 119.4 |
C5—C4—C6 | 119.0 (3) | C20—C19—C18 | 120.3 (3) |
C5—C4—C3 | 116.9 (2) | C20—C19—H19 | 119.8 |
C6—C4—C3 | 124.1 (3) | C18—C19—H19 | 119.8 |
N1—C5—C4 | 120.2 (2) | C19—C20—O2 | 125.5 (2) |
N1—C5—C9 | 120.1 (2) | C19—C20—C16 | 120.1 (2) |
C4—C5—C9 | 119.8 (2) | O2—C20—C16 | 114.40 (19) |
C7—C6—C4 | 119.7 (3) | O2—C21—C22 | 107.24 (19) |
C7—C6—H6 | 120.2 | O2—C21—H21A | 110.3 |
C4—C6—H6 | 120.2 | C22—C21—H21A | 110.3 |
C6—C7—C8 | 121.9 (3) | O2—C21—H21B | 110.3 |
C6—C7—H7 | 119.0 | C22—C21—H21B | 110.3 |
C8—C7—H7 | 119.0 | H21A—C21—H21B | 108.5 |
C9—C8—C7 | 120.1 (3) | F4—C22—F6 | 107.2 (2) |
C9—C8—H8 | 119.9 | F4—C22—F5 | 108.3 (2) |
C7—C8—H8 | 119.9 | F6—C22—F5 | 105.6 (2) |
C8—C9—O1 | 126.7 (2) | F4—C22—C21 | 109.5 (2) |
C8—C9—C5 | 119.5 (2) | F6—C22—C21 | 112.6 (2) |
O1—C9—C5 | 113.7 (2) | F5—C22—C21 | 113.3 (2) |
O1—C10—C11 | 107.3 (2) | O6—Cl1—O5 | 109.93 (14) |
O1—C10—H10A | 110.3 | O6—Cl1—O3 | 109.00 (14) |
C11—C10—H10A | 110.3 | O5—Cl1—O3 | 109.86 (15) |
O1—C10—H10B | 110.3 | O6—Cl1—O4 | 109.81 (14) |
C11—C10—H10B | 110.3 | O5—Cl1—O4 | 110.33 (15) |
H10A—C10—H10B | 108.5 | O3—Cl1—O4 | 107.87 (14) |
N2—C12—C13 | 122.8 (3) | C1—N1—C5 | 121.2 (2) |
N2—C12—H12 | 118.6 | C1—N1—H1A | 119.4 |
C13—C12—H12 | 118.6 | C5—N1—H1A | 119.4 |
C14—C13—C12 | 118.9 (3) | C12—N2—C16 | 118.9 (2) |
C14—C13—H13 | 120.5 | C9—O1—C10 | 117.2 (2) |
C12—C13—H13 | 120.5 | C20—O2—C21 | 116.17 (18) |
C13—C14—C15 | 120.8 (3) | F3—C11—F1 | 107.5 (10) |
C13—C14—H14 | 119.6 | F3—C11—F2 | 100.6 (10) |
C15—C14—H14 | 119.6 | F1—C11—F2 | 116.5 (9) |
C14—C15—C16 | 117.0 (2) | F3—C11—C10 | 113.4 (7) |
C14—C15—C17 | 123.7 (2) | F1—C11—C10 | 108.9 (8) |
C16—C15—C17 | 119.3 (2) | F2—C11—C10 | 109.9 (9) |
N1—C1—C2—C3 | 0.6 (4) | C16—C15—C17—C18 | 1.2 (4) |
C1—C2—C3—C4 | 0.0 (4) | C15—C17—C18—C19 | 0.3 (4) |
C2—C3—C4—C5 | −1.3 (4) | C17—C18—C19—C20 | −0.8 (4) |
C2—C3—C4—C6 | 179.0 (3) | C18—C19—C20—O2 | 179.2 (2) |
C6—C4—C5—N1 | −178.2 (2) | C18—C19—C20—C16 | −0.2 (4) |
C3—C4—C5—N1 | 2.1 (3) | N2—C16—C20—C19 | −179.2 (2) |
C6—C4—C5—C9 | 1.1 (3) | C15—C16—C20—C19 | 1.7 (3) |
C3—C4—C5—C9 | −178.7 (2) | N2—C16—C20—O2 | 1.3 (3) |
C5—C4—C6—C7 | −0.7 (4) | C15—C16—C20—O2 | −177.81 (19) |
C3—C4—C6—C7 | 179.0 (3) | O2—C21—C22—F4 | −176.1 (2) |
C4—C6—C7—C8 | −0.6 (4) | O2—C21—C22—F6 | 64.7 (3) |
C6—C7—C8—C9 | 1.4 (4) | O2—C21—C22—F5 | −55.0 (3) |
C7—C8—C9—O1 | 179.3 (2) | C2—C1—N1—C5 | 0.2 (4) |
C7—C8—C9—C5 | −0.9 (4) | C4—C5—N1—C1 | −1.6 (3) |
N1—C5—C9—C8 | 179.0 (2) | C9—C5—N1—C1 | 179.1 (2) |
C4—C5—C9—C8 | −0.3 (3) | C13—C12—N2—C16 | 0.6 (4) |
N1—C5—C9—O1 | −1.2 (3) | C15—C16—N2—C12 | 2.4 (3) |
C4—C5—C9—O1 | 179.6 (2) | C20—C16—N2—C12 | −176.7 (2) |
N2—C12—C13—C14 | −2.4 (4) | C8—C9—O1—C10 | −3.9 (4) |
C12—C13—C14—C15 | 1.1 (4) | C5—C9—O1—C10 | 176.3 (2) |
C13—C14—C15—C16 | 1.6 (4) | C11—C10—O1—C9 | −169.7 (3) |
C13—C14—C15—C17 | 179.3 (3) | C19—C20—O2—C21 | −7.9 (3) |
C14—C15—C16—N2 | −3.5 (3) | C16—C20—O2—C21 | 171.53 (19) |
C17—C15—C16—N2 | 178.8 (2) | C22—C21—O2—C20 | −167.1 (2) |
C14—C15—C16—C20 | 175.6 (2) | O1—C10—C11—F3 | 59.6 (8) |
C17—C15—C16—C20 | −2.2 (3) | O1—C10—C11—F1 | −60.0 (9) |
C14—C15—C17—C18 | −176.4 (3) | O1—C10—C11—F2 | 171.3 (6) |
Cg1, Cg2 and Cg3 are the midpoints of the N1–C5, C5–C9 and C17–C18 bonds, respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···N2 | 0.86 | 1.87 | 2.684 (3) | 158 |
C22—F5···Cg1 | 1.33 | 3.10 | 3.796 (3) | 111 |
C22—F6···Cg2 | 1.33 | 3.17 | 3.804 (4) | 109 |
C13—H13···O3i | 0.93 | 2.60 | 3.393 (6) | 144 |
C21—H21B···O4ii | 0.97 | 2.48 | 3.437 (7) | 169 |
C22—F5···Cg3iii | 1.33 | 3.24 | 3.860 (8) | 108 |
Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) −x+1, −y+1, −z+2; (iii) −x+2, −y+1, −z+2. |
Experimental details
Crystal data | |
Chemical formula | C11H9F3NO+·ClO4−·C11H8F3NO |
Mr | 554.83 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 9.462 (2), 11.229 (3), 11.832 (3) |
α, β, γ (°) | 82.910 (3), 77.048 (3), 74.536 (3) |
V (Å3) | 1178.0 (5) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.25 |
Crystal size (mm) | 0.50 × 0.32 × 0.25 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 1999) |
Tmin, Tmax | 0.884, 0.940 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6301, 4364, 3400 |
Rint | 0.021 |
(sin θ/λ)max (Å−1) | 0.608 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.050, 0.137, 1.02 |
No. of reflections | 4364 |
No. of parameters | 361 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.25, −0.27 |
Computer programs: SMART (Bruker, 1999), SAINT (Bruker, 1999), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
Cg1, Cg2 and Cg3 are the midpoints of the N1–C5, C5–C9 and C17–C18 bonds, respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···N2 | 0.86 | 1.87 | 2.684 (3) | 158 |
C22—F5···Cg1 | 1.33 | 3.10 | 3.796 (3) | 111 |
C22—F6···Cg2 | 1.33 | 3.17 | 3.804 (4) | 109 |
C13—H13···O3i | 0.93 | 2.60 | 3.393 (6) | 143.94 |
C21—H21B···O4ii | 0.97 | 2.48 | 3.437 (7) | 169 |
C22—F5···Cg3iii | 1.33 | 3.24 | 3.860 (8) | 108 |
Symmetry codes: (i) −x+1, −y+1, −z+1; (ii) −x+1, −y+1, −z+2; (iii) −x+2, −y+1, −z+2. |
Acknowledgements
Financial support from the National Natural Science Foundation of China (grant No. 20572064) and the Natural Science Foundation of Shandong Province (grant No. ZR2010BM022) is gratefully acknowledged.
References
Al-Mandhary, M. R. A. & Steel, P. J. (2003). Inorg. Chim. Acta, 351, 7–11. Web of Science CSD CrossRef CAS Google Scholar
Bruker (1999). SMART, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Chen, C.-L., Zhang, J.-A., Li, X.-P., Chen, Z.-N., Kang, B.-S. & Su, C.-Y. (2005). Inorg. Chim. Acta, 358, 4527–4533. Web of Science CSD CrossRef CAS Google Scholar
Choudhury, A. R. & Row, T. N. G. (2004). Cryst. Growth Des. 4, 47–52. Web of Science CSD CrossRef CAS Google Scholar
Kalita, D. & Baruah, J. B. (2010). CrystEngComm, 12, 1562–1567. CrossRef CAS Google Scholar
Kalita, D., Sarma, R. & Baruah, J. B. (2009). CrystEngComm, 11, 803–810. CrossRef CAS Google Scholar
Karmakar, A., Kalita, D. & Baruah, J. B. (2009). J. Mol. Struct. 935, 47–52. CrossRef CAS Google Scholar
Liang, F., Xie, Z., Wang, L., Jing, X. & Wang, F. (2002). Tetrahedron Lett. 43, 3427–3430. CrossRef CAS Google Scholar
Moret, V., Dereudre-Bosquet, N., Clayette, P., Laras, Y., Pietrancosta, N., Rolland, A., Weck, C., Marc, S. & Kraus, J.-L. (2006). Bioorg. Med. Chem. Lett. 16, 5988–5992. Web of Science CrossRef PubMed CAS Google Scholar
Ouyang, J., Xu, Y. & Khoo, L. E. (1998). J. Organomet. Chem. 561, 143–152. Web of Science CSD CrossRef CAS Google Scholar
Prasanna, M. D. & Row, T. N. G. (2000). Cryst. Eng. 3, 135–154. CrossRef CAS Google Scholar
Saraogi, I., Vijay, V. G., Das, S., Sekar, K. & Row, T. N. G. (2003). Cryst. Eng. 6, 69–77. CrossRef CAS Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Zhang, S.-S., Xu, L.-L., Wen, H.-L., Li, X.-M. & Wen, Y.-H. (2006). Acta Cryst. E62, o3071–o3072. Web of Science CSD CrossRef IUCr Journals Google Scholar
Zheng, Z.-B., Li, J.-K., Wu, R.-T. & Sun, Y.-F. (2006). Acta Cryst. E62, o4611–o4612. Web of Science CSD CrossRef IUCr Journals Google Scholar
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.
Molecules containing quinoline moieties have attracted much interest due to their significant bioactivities (Moret et al., 2006) and potential applications for constructing supramolecular systems by various hydrogen bonds and π–π interactions (Kalita et al., 2009). Numerous crystal structures of 8-substituented quinolines, most of which are 8-alkyloxyquinoline derivatives have been reported (Karmakar et al., 2009; Al-Mandhary et al., 2003; Zhang et al., 2006; Zheng et al., 2006), while the crystal structures of such compounds exhibiting fluorinated alkyl groups have rarely been described. We synthesized a new trifluoroethoxyquinoline derivative and attempted to prepare its Ni(II)-complex. Surprisingly, a complex without the Ni(II) ion, namely 8-(2,2,2-trifluoroethoxy)-quinolinium-[8-(2,2,2-trifluoroethoxy)-quinoline] perchlorate, was obtained. Here, we report its crystal structure.
In the crystal structure of the title complex the asymmetric unit contains one perchlorate anion and one organic cation consisting of two 8-(2,2,2-trifluoroethoxy)-quinolines and a proton (Fig. 1). In the cationic unit, one quinoline ring is protonated forming a quinolinium and is connected to the other one via a N—H···N hydrogen bond (N–H···N angle 155.33 (5)°, N1···N2 2.684 (3) Å, Fig. 2, Table 1). This distance is shorter than 2.729 Å reported for a similar quinoline derivative (Ouyang et al., 1998). Such a short distance may be ascribed to the presence of two weak C—F···π contacts (Prasanna & Row, 2000; Saraogi et al., 2003; Choudhury & Row, 2004) between the non-disordered trifluoromethyl group and the quinoline ring. Separations of F5···Cg1 and F6···Cg2 (Cg1 and Cg2 are the centroids of N1–C5 and C5–C9 bonds, respectively) are 3.099 (3) and 3.166 (3) Å, respectively. The quinolinium and quinoline rings are almost perpendicular to each other, with a dihedral angle of 86.97 (6)°. The other trifluoromethyl group is disordered over two orientations, with refined site-occupancy factors of 0.5.
In the packing of the title complex, there exist intermolecular C—H···O hydrogen bonds, C—F···π contacts (Table 1) and π–π stackings (Kalita & Baruah, 2010; Chen et al., 2005; Liang et al., 2002). The cationic units are alternately bridged by perchlorate anions with intermolecular C—H···O hydrogen bonds and form an infinite one-dimensional chain along the c axis (Fig. 3). Hydrogen bonds arise from atoms C13—H13 and C21—H21B in the molecule at (x, y, z) acting as hydrogen bond donors towards atoms O3 at (-x + 1, -y + 1, -z + 1) and O4 (-x + 1, -y + 1, -z + 2), respectively. Two adjacent chains running along the alternate orientation are further combined to a molecular column by π–π stacking interactions between the quinolinium rings, with perpendicular and centroid-centroid distances of 3.501 (3) and 3.634 (9) Å, respectively, between neighboring phenyl rings of the quinolinium units. Finally, a complicated three-dimensional framework is formed by a combination of C—F···π contacts, with a F5···Cg3 (Cg3 is the centroid of C17–C18 bond) distance of 3.240 (7) Å (Table 1), and weak π–π stackings between adjacent phenyl rings of the quinoline moieties, with perpendicular and centroid-centroid separations of 3.340 (4) and 4.408 (4) Å, respectively.