organic compounds
3-(3-Methylphenyl)-5-(quinolin-8-ylmethoxy)-1,2,4-oxadiazole monohydrate
aCollege of Science, Nanjing University of Technology, Xinmofan Road No.5 Nanjing, Nanjing 210009, People's Republic of China, and bCollege of Food Science and Light Industry, Nanjing University of Technology, Xinmofan Road No.5 Nanjing, Nanjing 210009, People's Republic of China
*Correspondence e-mail: wanghaibo@njut.edu.cn
In the title compound, C19H15N3O2·H2O, the oxadiazole ring and the quinoline unit are almost coplanar, making a dihedral angle of 7.66 (8)°. The dihedral angle between the benzene ring and the quinoline system is 25.95 (8)° while that between the benzene and the oxadiazole rings is 18.88 (9)°. The water molecule is hydrogen bonded to an oxadiazole N atom and to the quinoline N atom. In the crystal, these units are linked via C—H⋯O hydrogen bonds, forming two-dimensional networks lying parallel to the ab plane.
Related literature
For the preparation of the title compound, see: Chiou & Shine (1989). For the biological activity of 1,2,4-oxadiazole derivatives, see: Street et al. (1990). For metal complexes of related compounds, see: da Silva et al. (1999); Pibiri et al. (2010); Terenzi et al. (2011). For bond-length data, see: Allen et al. (1987).
Experimental
Crystal data
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Data collection: CAD-4 EXPRESS (Enraf–Nonius, 1994); cell CAD-4 EXPRESS; data reduction: XCAD4 (Harms & Wocadlo, 1995); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
10.1107/S160053681302477X/im2428sup1.cif
contains datablocks D, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S160053681302477X/im2428Isup2.hkl
5-(Quinoline-8-ylmethoxy)-3-p-tolyl-1,2,4-oxadiazole was prepared by a literature method (Chiou & Shine, 1989). 3-(4-Methyl-phenyl)-5-chloromethyl-1,2,4-oxadizole (3.4 g, 16.4 mmol), 8-hydroxy-quinoline (2.4 g, 16.4 mmol), potassium carbonate (3.4 g ,24.6 mmol) and potassium iodide (catalytic amount) were added to acetone (40 ml). The mixture was then heated to reflux for 6 hours. After being cooled to room temperature, the mixture was filtered and evaporated to afford the product as a yellow solid. The crude product was re-crystallized from ethyl acetate (yield 3.1g, 59.8%). Crystals suitable for X-ray analysis were obtained by slow evaporation of an ethyl acetate solution.
H atoms were positioned geometrically, with C-H = 0.93, 0.97 and 0.96 Å for aromatic, methylene and methyl H, respectively, and constrained to ride on their parent atoms, with Uiso(H) = xUeq(C,N), where x = 1.5 for methyl H and x = 1.2 for all other H atoms. Hydrogen atoms of the solvent water molecule have been determined from Fourier maps and refined freely.
Data collection: CAD-4 EXPRESS (Enraf–Nonius, 1994); cell
CAD-4 EXPRESS (Enraf–Nonius, 1994); data reduction: XCAD4 (Harms & Wocadlo, 1995); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: publCIF (Westrip, 2010).Fig. 1. Molecular structure of the title molecule with displacement ellipsoids drawn at the 50% probability level. | |
Fig. 2. Packing diagram of the title compound. Hydrogen bonds are shown as dashed lines. |
C19H15N3O2·H2O | Z = 2 |
Mr = 335.36 | F(000) = 352 |
Triclinic, P1 | Dx = 1.345 Mg m−3 |
Hall symbol: -P 1 | Melting point: 342 K |
a = 7.2070 (14) Å | Mo Kα radiation, λ = 0.71073 Å |
b = 7.6200 (15) Å | Cell parameters from 25 reflections |
c = 15.109 (3) Å | θ = 9–13° |
α = 92.62 (3)° | µ = 0.09 mm−1 |
β = 90.19 (3)° | T = 293 K |
γ = 92.15 (3)° | Block, yellow |
V = 828.3 (3) Å3 | 0.30 × 0.10 × 0.10 mm |
Enraf–Nonius CAD-4 diffractometer | 1949 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.015 |
Graphite monochromator | θmax = 25.4°, θmin = 1.4° |
ω/2θ scans | h = 0→8 |
Absorption correction: ψ scan (North et al., 1968) | k = −9→9 |
Tmin = 0.973, Tmax = 0.991 | l = −18→18 |
3302 measured reflections | 3 standard reflections every 200 reflections |
3039 independent reflections | intensity decay: 1% |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.054 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.162 | w = 1/[σ2(Fo2) + (0.097P)2] where P = (Fo2 + 2Fc2)/3 |
S = 1.00 | (Δ/σ)max < 0.001 |
3039 reflections | Δρmax = 0.24 e Å−3 |
233 parameters | Δρmin = −0.18 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.033 (7) |
C19H15N3O2·H2O | γ = 92.15 (3)° |
Mr = 335.36 | V = 828.3 (3) Å3 |
Triclinic, P1 | Z = 2 |
a = 7.2070 (14) Å | Mo Kα radiation |
b = 7.6200 (15) Å | µ = 0.09 mm−1 |
c = 15.109 (3) Å | T = 293 K |
α = 92.62 (3)° | 0.30 × 0.10 × 0.10 mm |
β = 90.19 (3)° |
Enraf–Nonius CAD-4 diffractometer | 1949 reflections with I > 2σ(I) |
Absorption correction: ψ scan (North et al., 1968) | Rint = 0.015 |
Tmin = 0.973, Tmax = 0.991 | 3 standard reflections every 200 reflections |
3302 measured reflections | intensity decay: 1% |
3039 independent reflections |
R[F2 > 2σ(F2)] = 0.054 | 0 restraints |
wR(F2) = 0.162 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | Δρmax = 0.24 e Å−3 |
3039 reflections | Δρmin = −0.18 e Å−3 |
233 parameters |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2sigma(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 | ||
O1 | 0.0819 (2) | 0.7951 (2) | 0.99656 (11) | 0.0571 (5) | |
N1 | −0.1889 (3) | 0.6301 (2) | 1.08273 (13) | 0.0522 (5) | |
C1 | 0.2813 (3) | 0.8077 (3) | 1.12657 (18) | 0.0596 (7) | |
H1B | 0.3763 | 0.8670 | 1.0974 | 0.071* | |
N2 | 0.0057 (3) | 0.8438 (2) | 0.81930 (13) | 0.0511 (5) | |
O2 | 0.2873 (2) | 0.9553 (2) | 0.80096 (12) | 0.0695 (6) | |
C2 | 0.3046 (4) | 0.7675 (4) | 1.21478 (19) | 0.0667 (7) | |
H2B | 0.4155 | 0.8005 | 1.2437 | 0.080* | |
C3 | 0.1700 (4) | 0.6819 (4) | 1.25913 (18) | 0.0656 (7) | |
H3A | 0.1894 | 0.6553 | 1.3178 | 0.079* | |
N3 | 0.2016 (3) | 0.9460 (3) | 0.71676 (15) | 0.0714 (7) | |
C4 | −0.0008 (3) | 0.6320 (3) | 1.21701 (17) | 0.0551 (6) | |
C5 | −0.1489 (4) | 0.5465 (3) | 1.25918 (18) | 0.0642 (7) | |
H5A | −0.1374 | 0.5179 | 1.3181 | 0.077* | |
C6 | −0.3092 (4) | 0.5051 (3) | 1.21418 (19) | 0.0653 (7) | |
H6A | −0.4084 | 0.4483 | 1.2416 | 0.078* | |
C7 | −0.3218 (3) | 0.5497 (3) | 1.12629 (18) | 0.0594 (7) | |
H7A | −0.4323 | 0.5206 | 1.0962 | 0.071* | |
C8 | −0.0273 (3) | 0.6721 (3) | 1.12723 (16) | 0.0475 (6) | |
C9 | 0.1196 (3) | 0.7605 (3) | 1.08256 (16) | 0.0486 (6) | |
C10 | 0.2240 (3) | 0.8842 (3) | 0.94993 (17) | 0.0557 (6) | |
H10A | 0.3386 | 0.8219 | 0.9528 | 0.067* | |
H10B | 0.2460 | 1.0022 | 0.9757 | 0.067* | |
C11 | 0.1608 (3) | 0.8911 (3) | 0.85698 (17) | 0.0511 (6) | |
C12 | 0.0369 (3) | 0.8783 (3) | 0.73185 (16) | 0.0535 (6) | |
C13 | −0.0981 (3) | 0.8373 (3) | 0.66076 (16) | 0.0553 (6) | |
C14 | −0.2843 (4) | 0.8113 (3) | 0.67896 (17) | 0.0617 (7) | |
H14A | −0.3249 | 0.8161 | 0.7374 | 0.074* | |
C15 | −0.4105 (4) | 0.7784 (4) | 0.61087 (18) | 0.0687 (7) | |
H15A | −0.5356 | 0.7628 | 0.6245 | 0.082* | |
C16 | −0.3573 (4) | 0.7677 (3) | 0.52325 (17) | 0.0677 (8) | |
C17 | −0.1699 (5) | 0.7904 (4) | 0.50615 (19) | 0.0847 (9) | |
H17A | −0.1291 | 0.7826 | 0.4478 | 0.102* | |
C18 | −0.0424 (4) | 0.8242 (4) | 0.57307 (19) | 0.0814 (9) | |
H18A | 0.0828 | 0.8385 | 0.5594 | 0.098* | |
C19 | −0.4974 (5) | 0.7358 (4) | 0.45006 (19) | 0.0905 (10) | |
H19A | −0.4352 | 0.7339 | 0.3940 | 0.136* | |
H19B | −0.5845 | 0.8282 | 0.4523 | 0.136* | |
H19C | −0.5622 | 0.6250 | 0.4571 | 0.136* | |
OW | −0.3313 (2) | 0.7299 (3) | 0.91840 (14) | 0.0733 (6) | |
HWB | −0.236 (5) | 0.757 (4) | 0.8819 (19) | 0.088* | |
HWA | −0.274 (4) | 0.682 (4) | 0.967 (2) | 0.088* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0383 (8) | 0.0683 (11) | 0.0639 (11) | −0.0106 (8) | −0.0065 (8) | 0.0075 (8) |
N1 | 0.0400 (10) | 0.0500 (11) | 0.0661 (13) | −0.0038 (9) | −0.0033 (10) | 0.0013 (9) |
C1 | 0.0387 (13) | 0.0624 (16) | 0.0769 (19) | 0.0010 (11) | −0.0102 (12) | −0.0030 (13) |
N2 | 0.0425 (11) | 0.0550 (12) | 0.0551 (12) | −0.0019 (9) | 0.0074 (9) | −0.0021 (9) |
O2 | 0.0450 (10) | 0.0884 (13) | 0.0744 (13) | −0.0133 (9) | 0.0078 (9) | 0.0081 (10) |
C2 | 0.0498 (15) | 0.0751 (18) | 0.0742 (19) | 0.0041 (13) | −0.0197 (14) | −0.0088 (14) |
C3 | 0.0634 (17) | 0.0752 (18) | 0.0579 (16) | 0.0075 (14) | −0.0165 (14) | −0.0034 (13) |
N3 | 0.0556 (13) | 0.0913 (17) | 0.0670 (15) | −0.0103 (12) | 0.0084 (12) | 0.0106 (12) |
C4 | 0.0528 (14) | 0.0486 (13) | 0.0640 (16) | 0.0094 (11) | −0.0032 (12) | −0.0022 (11) |
C5 | 0.0694 (18) | 0.0598 (16) | 0.0643 (17) | 0.0119 (14) | 0.0029 (14) | 0.0052 (13) |
C6 | 0.0580 (16) | 0.0608 (16) | 0.0773 (19) | −0.0011 (13) | 0.0091 (14) | 0.0079 (14) |
C7 | 0.0457 (14) | 0.0567 (15) | 0.0753 (18) | −0.0028 (12) | −0.0016 (13) | 0.0017 (13) |
C8 | 0.0405 (12) | 0.0420 (12) | 0.0595 (15) | 0.0032 (10) | −0.0053 (11) | −0.0046 (10) |
C9 | 0.0370 (12) | 0.0478 (13) | 0.0607 (15) | 0.0047 (10) | −0.0081 (11) | −0.0021 (11) |
C10 | 0.0327 (11) | 0.0617 (15) | 0.0713 (17) | −0.0062 (11) | 0.0050 (11) | −0.0053 (12) |
C11 | 0.0351 (12) | 0.0505 (13) | 0.0668 (16) | −0.0005 (10) | 0.0058 (11) | −0.0041 (11) |
C12 | 0.0478 (13) | 0.0534 (14) | 0.0592 (16) | 0.0016 (11) | 0.0118 (11) | 0.0019 (11) |
C13 | 0.0573 (15) | 0.0544 (14) | 0.0540 (15) | 0.0009 (12) | 0.0074 (12) | 0.0002 (11) |
C14 | 0.0577 (15) | 0.0757 (17) | 0.0516 (15) | 0.0001 (13) | 0.0060 (12) | 0.0021 (12) |
C15 | 0.0590 (15) | 0.0846 (19) | 0.0623 (18) | −0.0007 (14) | −0.0003 (13) | 0.0034 (14) |
C16 | 0.085 (2) | 0.0642 (17) | 0.0536 (17) | 0.0042 (15) | −0.0039 (14) | 0.0020 (13) |
C17 | 0.090 (2) | 0.112 (3) | 0.0512 (17) | −0.0007 (19) | 0.0109 (16) | −0.0037 (16) |
C18 | 0.0700 (18) | 0.111 (2) | 0.0616 (18) | −0.0049 (17) | 0.0182 (16) | −0.0037 (16) |
C19 | 0.111 (3) | 0.100 (2) | 0.0606 (18) | 0.003 (2) | −0.0170 (18) | 0.0006 (17) |
OW | 0.0446 (10) | 0.1012 (15) | 0.0735 (13) | −0.0152 (10) | −0.0081 (9) | 0.0147 (11) |
O1—C9 | 1.366 (3) | C7—H7A | 0.9300 |
O1—C10 | 1.415 (3) | C8—C9 | 1.422 (3) |
N1—C7 | 1.313 (3) | C10—C11 | 1.479 (4) |
N1—C8 | 1.363 (3) | C10—H10A | 0.9700 |
C1—C9 | 1.368 (3) | C10—H10B | 0.9700 |
C1—C2 | 1.392 (4) | C12—C13 | 1.462 (3) |
C1—H1B | 0.9300 | C13—C14 | 1.380 (4) |
N2—C11 | 1.285 (3) | C13—C18 | 1.386 (4) |
N2—C12 | 1.376 (3) | C14—C15 | 1.379 (4) |
O2—C11 | 1.340 (3) | C14—H14A | 0.9300 |
O2—N3 | 1.410 (3) | C15—C16 | 1.379 (4) |
C2—C3 | 1.346 (4) | C15—H15A | 0.9300 |
C2—H2B | 0.9300 | C16—C17 | 1.381 (4) |
C3—C4 | 1.415 (3) | C16—C19 | 1.501 (4) |
C3—H3A | 0.9300 | C17—C18 | 1.373 (4) |
N3—C12 | 1.301 (3) | C17—H17A | 0.9300 |
C4—C5 | 1.400 (4) | C18—H18A | 0.9300 |
C4—C8 | 1.418 (3) | C19—H19A | 0.9600 |
C5—C6 | 1.358 (4) | C19—H19B | 0.9600 |
C5—H5A | 0.9300 | C19—H19C | 0.9600 |
C6—C7 | 1.389 (4) | OW—HWB | 0.91 (3) |
C6—H6A | 0.9300 | OW—HWA | 0.94 (3) |
C9—O1—C10 | 116.60 (18) | O1—C10—H10B | 110.3 |
C7—N1—C8 | 117.4 (2) | C11—C10—H10B | 110.3 |
C9—C1—C2 | 120.5 (2) | H10A—C10—H10B | 108.5 |
C9—C1—H1B | 119.8 | N2—C11—O2 | 113.4 (2) |
C2—C1—H1B | 119.8 | N2—C11—C10 | 131.4 (2) |
C11—N2—C12 | 103.1 (2) | O2—C11—C10 | 115.16 (19) |
C11—O2—N3 | 105.97 (17) | N3—C12—N2 | 114.0 (2) |
C3—C2—C1 | 121.4 (2) | N3—C12—C13 | 122.2 (2) |
C3—C2—H2B | 119.3 | N2—C12—C13 | 123.9 (2) |
C1—C2—H2B | 119.3 | C14—C13—C18 | 118.2 (3) |
C2—C3—C4 | 120.4 (3) | C14—C13—C12 | 121.0 (2) |
C2—C3—H3A | 119.8 | C18—C13—C12 | 120.8 (2) |
C4—C3—H3A | 119.8 | C15—C14—C13 | 120.2 (2) |
C12—N3—O2 | 103.59 (19) | C15—C14—H14A | 119.9 |
C5—C4—C3 | 123.8 (3) | C13—C14—H14A | 119.9 |
C5—C4—C8 | 117.1 (2) | C14—C15—C16 | 122.2 (3) |
C3—C4—C8 | 119.0 (2) | C14—C15—H15A | 118.9 |
C6—C5—C4 | 120.1 (3) | C16—C15—H15A | 118.9 |
C6—C5—H5A | 120.0 | C15—C16—C17 | 116.9 (3) |
C4—C5—H5A | 120.0 | C15—C16—C19 | 121.3 (3) |
C5—C6—C7 | 118.5 (3) | C17—C16—C19 | 121.8 (3) |
C5—C6—H6A | 120.7 | C18—C17—C16 | 121.7 (3) |
C7—C6—H6A | 120.7 | C18—C17—H17A | 119.2 |
N1—C7—C6 | 124.6 (2) | C16—C17—H17A | 119.2 |
N1—C7—H7A | 117.7 | C17—C18—C13 | 120.8 (3) |
C6—C7—H7A | 117.7 | C17—C18—H18A | 119.6 |
N1—C8—C4 | 122.3 (2) | C13—C18—H18A | 119.6 |
N1—C8—C9 | 119.1 (2) | C16—C19—H19A | 109.5 |
C4—C8—C9 | 118.7 (2) | C16—C19—H19B | 109.5 |
O1—C9—C1 | 125.1 (2) | H19A—C19—H19B | 109.5 |
O1—C9—C8 | 114.81 (19) | C16—C19—H19C | 109.5 |
C1—C9—C8 | 120.1 (2) | H19A—C19—H19C | 109.5 |
O1—C10—C11 | 107.17 (18) | H19B—C19—H19C | 109.5 |
O1—C10—H10A | 110.3 | HWB—OW—HWA | 104 (3) |
C11—C10—H10A | 110.3 | ||
C9—C1—C2—C3 | 0.0 (4) | C12—N2—C11—O2 | 0.9 (3) |
C1—C2—C3—C4 | −0.8 (4) | C12—N2—C11—C10 | −177.9 (2) |
C11—O2—N3—C12 | −0.1 (3) | N3—O2—C11—N2 | −0.5 (3) |
C2—C3—C4—C5 | −178.5 (2) | N3—O2—C11—C10 | 178.5 (2) |
C2—C3—C4—C8 | 0.6 (4) | O1—C10—C11—N2 | 5.4 (4) |
C3—C4—C5—C6 | 179.2 (2) | O1—C10—C11—O2 | −173.34 (19) |
C8—C4—C5—C6 | 0.1 (4) | O2—N3—C12—N2 | 0.7 (3) |
C4—C5—C6—C7 | 0.0 (4) | O2—N3—C12—C13 | −177.1 (2) |
C8—N1—C7—C6 | 0.1 (4) | C11—N2—C12—N3 | −1.0 (3) |
C5—C6—C7—N1 | −0.1 (4) | C11—N2—C12—C13 | 176.7 (2) |
C7—N1—C8—C4 | 0.0 (3) | N3—C12—C13—C14 | −162.3 (3) |
C7—N1—C8—C9 | −179.5 (2) | N2—C12—C13—C14 | 20.1 (4) |
C5—C4—C8—N1 | −0.1 (3) | N3—C12—C13—C18 | 17.4 (4) |
C3—C4—C8—N1 | −179.2 (2) | N2—C12—C13—C18 | −160.1 (3) |
C5—C4—C8—C9 | 179.4 (2) | C18—C13—C14—C15 | −1.8 (4) |
C3—C4—C8—C9 | 0.3 (3) | C12—C13—C14—C15 | 177.9 (2) |
C10—O1—C9—C1 | 1.1 (3) | C13—C14—C15—C16 | 0.9 (4) |
C10—O1—C9—C8 | 179.53 (19) | C14—C15—C16—C17 | 0.4 (4) |
C2—C1—C9—O1 | 179.3 (2) | C14—C15—C16—C19 | −178.6 (3) |
C2—C1—C9—C8 | 0.9 (4) | C15—C16—C17—C18 | −0.7 (5) |
N1—C8—C9—O1 | 0.0 (3) | C19—C16—C17—C18 | 178.2 (3) |
C4—C8—C9—O1 | −179.54 (19) | C16—C17—C18—C13 | −0.2 (5) |
N1—C8—C9—C1 | 178.5 (2) | C14—C13—C18—C17 | 1.5 (5) |
C4—C8—C9—C1 | −1.1 (3) | C12—C13—C18—C17 | −178.2 (3) |
C9—O1—C10—C11 | 174.34 (18) |
D—H···A | D—H | H···A | D···A | D—H···A |
OW—HWB···N2 | 0.91 (3) | 2.09 (3) | 2.980 (3) | 169 (3) |
OW—HWA···N1 | 0.94 (3) | 1.91 (3) | 2.830 (3) | 165 (3) |
C7—H7A···OWi | 0.93 | 2.51 | 3.272 (3) | 139 |
C10—H10A···OWii | 0.97 | 2.55 | 3.482 (3) | 160 |
C10—H10B···OWiii | 0.97 | 2.59 | 3.534 (3) | 164 |
Symmetry codes: (i) −x−1, −y+1, −z+2; (ii) x+1, y, z; (iii) −x, −y+2, −z+2. |
D—H···A | D—H | H···A | D···A | D—H···A |
OW—HWB···N2 | 0.91 (3) | 2.09 (3) | 2.980 (3) | 169 (3) |
OW—HWA···N1 | 0.94 (3) | 1.91 (3) | 2.830 (3) | 165 (3) |
C7—H7A···OWi | 0.9300 | 2.5100 | 3.272 (3) | 139.00 |
C10—H10A···OWii | 0.9700 | 2.5500 | 3.482 (3) | 160.00 |
C10—H10B···OWiii | 0.9700 | 2.5900 | 3.534 (3) | 164.00 |
Symmetry codes: (i) −x−1, −y+1, −z+2; (ii) x+1, y, z; (iii) −x, −y+2, −z+2. |
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1,2,4-Oxadiazole derivatives have shown high biological activity, such as antibacterial, anti-HIV and weed control (Street et al., 1990). They are therefore widely used in medicinal chemistry and as pesticides. 1,2,4-Oxadiazole derivatives in combination with metal ions can also be used in fluorescent recognition (da Silva et al., 1999; Pibiri et al., 2010; Terenzi et al., 2011). The title compound 5-(quinoline-8-ylmethoxy)-3-p-tolyl-1,2,4-oxadiazole was also used in metal ions fluorescent recognition. In the molecule of 5-(quinoline-8-ylmethoxy)-3-p-tolyl-1,2,4-oxadiazole hydrate (Fig. 1) bond lengths (Allen et al., 1987) and angles are within normal ranges.The oxadiazol ring and the quinoline moiety are almost coplanar showing a dihedral angle of 7.66 (8)°. The dihedral angles between the benzene ring and the quinoline system is 25.95 (8)°, the corresponding angle between the benzene and the oxadiazol rings is 18.88 (9)°. The crystal structure is established by intermolecular N—H···O and O—H···O hydrogen bonds (Fig. 2).