organic compounds
(2E)-3-(6-Chloro-2-methoxyquinolin-3-yl)-1-(2,4-dimethylquinolin-3-yl)prop-2-en-1-one
aDepartment of Chemistry, BITS, Pilani – K. K. Birla Goa Campus, Goa 403 726, India, bOrganic Chemistry Division, School of Advanced Sciences, VIT University, Vellore 632 014, India, cDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia, and dChemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80203 Jeddah, Saudi Arabia
*Correspondence e-mail: edward.tiekink@gmail.com
The molecule of the title compound, C24H19ClN2O2, is bent, with the dihedral angle between the terminal quinoline ring systems being 63.30 (5)°. The quinolinyl residues are connected by an almost planar prop-2-en-1-one bridge (r.m.s. deviation = 0.022 Å), with the dihedral angles between this plane and the appended quinolinyl residues being 75.86 (7) and 38.54 (7)°. The C atom of the methoxy group is close to coplanar with its attached ring [deviation = 0.116 (2) Å]. In the crystal, a three-dimensional architecture is constructed by methyl–carbonyl C—H⋯O interactions and π–π interactions between centrosymmetrically related quinolinyl residues [centroid-to-centroid separations 3.5341 (10) and 3.8719 (9) Å].
Related literature
For background to the biological activities and photophysical properties of quinolines, and their utility as intermediates in organic synthesis, see: Prasath & Bhavana (2012); Joshi et al. (2011). For background to the bio-activities of quinolinyl see: Prasath et al. (2013a). For a related structure, see: Prasath et al. (2013b).
Experimental
Crystal data
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Data collection: CrysAlis PRO (Agilent, 2013); cell CrysAlis PRO; data reduction: CrysAlis PRO; 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) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).
Supporting information
10.1107/S1600536813019399/hb7107sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813019399/hb7107Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813019399/hb7107Isup3.cml
A mixture of 2,4-dimethyl-3-acetylquinoline (200 mg, 0.001 M) and 2,6-dichloroquinoline-3-carbaldehyde (230 mg, 0.001 M) in methanol (20 ml) containing 0.2 g of potassium hydroxide was stirred at room temperature for 12 h. At the end of the period, the reaction mixture was neutralized with dilute acetic acid and the resultant solid was filtered, dried and purified by
using ethyl acetate–hexane (2:1) mixture to afford (I). Re-crystallization was by slow evaporation of an acetone solution of (I), which yielded pale-yellow blocks in 61% yield; M.pt: 423–425 K.Carbon-bound H atoms were placed in calculated positions [C—H = 0.95–0.98 Å, Uiso(H) = 1.2–1.5Ueq(C)] and were included in the
in the riding-model approximation.Data collection: CrysAlis PRO (Agilent, 2013); cell
CrysAlis PRO (Agilent, 2013); data reduction: CrysAlis PRO (Agilent, 2013); 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) and DIAMOND (Brandenburg, 2006); software used to prepare material for publication: publCIF (Westrip, 2010).C24H19ClN2O2 | F(000) = 840 |
Mr = 402.86 | Dx = 1.358 Mg m−3 |
Monoclinic, P21/n | Cu Kα radiation, λ = 1.54184 Å |
Hall symbol: -P 2yn | Cell parameters from 4094 reflections |
a = 13.1605 (3) Å | θ = 3.1–76.4° |
b = 10.4876 (2) Å | µ = 1.90 mm−1 |
c = 14.8786 (3) Å | T = 100 K |
β = 106.354 (2)° | Block, pale-yellow |
V = 1970.49 (7) Å3 | 0.35 × 0.30 × 0.25 mm |
Z = 4 |
Agilent SuperNova Dual diffractometer with Atlas detector | 4053 independent reflections |
Radiation source: SuperNova (Cu) X-ray Source | 3580 reflections with I > 2σ(I) |
Mirror monochromator | Rint = 0.019 |
Detector resolution: 10.4041 pixels mm-1 | θmax = 76.6°, θmin = 4.0° |
ω scans | h = −16→16 |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2013) | k = −12→13 |
Tmin = 0.711, Tmax = 1.000 | l = −18→18 |
8189 measured reflections |
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)] = 0.044 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.127 | H-atom parameters constrained |
S = 1.07 | w = 1/[σ2(Fo2) + (0.0675P)2 + 0.8422P] where P = (Fo2 + 2Fc2)/3 |
4053 reflections | (Δ/σ)max = 0.001 |
264 parameters | Δρmax = 0.61 e Å−3 |
0 restraints | Δρmin = −0.49 e Å−3 |
C24H19ClN2O2 | V = 1970.49 (7) Å3 |
Mr = 402.86 | Z = 4 |
Monoclinic, P21/n | Cu Kα radiation |
a = 13.1605 (3) Å | µ = 1.90 mm−1 |
b = 10.4876 (2) Å | T = 100 K |
c = 14.8786 (3) Å | 0.35 × 0.30 × 0.25 mm |
β = 106.354 (2)° |
Agilent SuperNova Dual diffractometer with Atlas detector | 4053 independent reflections |
Absorption correction: multi-scan (CrysAlis PRO; Agilent, 2013) | 3580 reflections with I > 2σ(I) |
Tmin = 0.711, Tmax = 1.000 | Rint = 0.019 |
8189 measured reflections |
R[F2 > 2σ(F2)] = 0.044 | 0 restraints |
wR(F2) = 0.127 | H-atom parameters constrained |
S = 1.07 | Δρmax = 0.61 e Å−3 |
4053 reflections | Δρmin = −0.49 e Å−3 |
264 parameters |
Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'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 > 2σ(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 | ||
Cl1 | 0.69700 (4) | 1.15984 (5) | 0.82007 (3) | 0.03903 (15) | |
O1 | 0.74055 (11) | 0.52819 (14) | 0.32665 (9) | 0.0379 (3) | |
O2 | 0.34467 (11) | 0.69372 (12) | 0.42578 (8) | 0.0324 (3) | |
N1 | 0.40195 (12) | 0.49117 (14) | 0.14020 (10) | 0.0271 (3) | |
N2 | 0.39020 (11) | 0.82891 (14) | 0.55617 (10) | 0.0249 (3) | |
C1 | 0.40917 (13) | 0.56639 (17) | 0.06701 (12) | 0.0252 (3) | |
C2 | 0.32879 (14) | 0.55356 (17) | −0.01880 (12) | 0.0284 (4) | |
H2 | 0.2728 | 0.4945 | −0.0237 | 0.034* | |
C3 | 0.33138 (15) | 0.62559 (19) | −0.09439 (12) | 0.0319 (4) | |
H3 | 0.2776 | 0.6155 | −0.1519 | 0.038* | |
C4 | 0.41310 (15) | 0.7150 (2) | −0.08803 (13) | 0.0338 (4) | |
H4 | 0.4130 | 0.7664 | −0.1406 | 0.041* | |
C5 | 0.49274 (15) | 0.72798 (18) | −0.00624 (13) | 0.0302 (4) | |
H5 | 0.5479 | 0.7878 | −0.0026 | 0.036* | |
C6 | 0.49323 (13) | 0.65264 (16) | 0.07298 (12) | 0.0247 (3) | |
C7 | 0.57710 (13) | 0.65747 (16) | 0.15858 (12) | 0.0256 (4) | |
C8 | 0.56830 (13) | 0.58072 (16) | 0.23097 (11) | 0.0250 (3) | |
C9 | 0.47856 (14) | 0.49875 (17) | 0.21924 (12) | 0.0271 (4) | |
C10 | 0.67212 (14) | 0.74029 (19) | 0.16571 (13) | 0.0323 (4) | |
H10A | 0.7189 | 0.7374 | 0.2299 | 0.048* | |
H10B | 0.6491 | 0.8283 | 0.1496 | 0.048* | |
H10C | 0.7104 | 0.7092 | 0.1223 | 0.048* | |
C11 | 0.46915 (18) | 0.4122 (2) | 0.29718 (14) | 0.0394 (5) | |
H11A | 0.4195 | 0.3430 | 0.2712 | 0.059* | |
H11B | 0.4431 | 0.4610 | 0.3423 | 0.059* | |
H11C | 0.5388 | 0.3762 | 0.3288 | 0.059* | |
C12 | 0.65569 (14) | 0.57938 (17) | 0.32225 (12) | 0.0269 (4) | |
C13 | 0.63785 (14) | 0.64480 (17) | 0.40412 (12) | 0.0270 (4) | |
H13 | 0.6935 | 0.6466 | 0.4609 | 0.032* | |
C14 | 0.54619 (13) | 0.70161 (16) | 0.40128 (11) | 0.0242 (3) | |
H14 | 0.4909 | 0.6960 | 0.3444 | 0.029* | |
C15 | 0.52396 (13) | 0.77189 (16) | 0.47882 (11) | 0.0231 (3) | |
C16 | 0.41937 (13) | 0.76998 (16) | 0.49044 (11) | 0.0247 (3) | |
C17 | 0.46563 (13) | 0.90084 (16) | 0.61874 (11) | 0.0237 (3) | |
C18 | 0.43667 (14) | 0.96369 (17) | 0.69184 (12) | 0.0278 (4) | |
H18 | 0.3674 | 0.9532 | 0.6983 | 0.033* | |
C19 | 0.50854 (15) | 1.04000 (17) | 0.75364 (12) | 0.0293 (4) | |
H19 | 0.4891 | 1.0819 | 0.8029 | 0.035* | |
C20 | 0.61116 (14) | 1.05587 (17) | 0.74370 (12) | 0.0282 (4) | |
C21 | 0.64352 (14) | 0.99357 (16) | 0.67556 (12) | 0.0259 (3) | |
H21 | 0.7135 | 1.0042 | 0.6707 | 0.031* | |
C22 | 0.57067 (13) | 0.91316 (15) | 0.61268 (11) | 0.0226 (3) | |
C23 | 0.59830 (13) | 0.84460 (15) | 0.54060 (11) | 0.0235 (3) | |
H23 | 0.6684 | 0.8492 | 0.5352 | 0.028* | |
C24 | 0.24358 (17) | 0.6907 (2) | 0.43289 (16) | 0.0437 (5) | |
H24A | 0.2003 | 0.6347 | 0.3843 | 0.066* | |
H24B | 0.2138 | 0.7770 | 0.4247 | 0.066* | |
H24C | 0.2440 | 0.6583 | 0.4947 | 0.066* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0375 (3) | 0.0398 (3) | 0.0358 (3) | −0.00176 (19) | 0.00367 (19) | −0.01474 (18) |
O1 | 0.0302 (7) | 0.0444 (8) | 0.0365 (7) | 0.0107 (6) | 0.0051 (5) | −0.0085 (6) |
O2 | 0.0458 (8) | 0.0284 (6) | 0.0201 (6) | 0.0077 (6) | 0.0046 (5) | −0.0081 (5) |
N1 | 0.0278 (7) | 0.0249 (7) | 0.0285 (7) | −0.0001 (6) | 0.0077 (6) | −0.0012 (6) |
N2 | 0.0247 (7) | 0.0242 (7) | 0.0260 (7) | 0.0009 (5) | 0.0076 (6) | 0.0004 (5) |
C1 | 0.0258 (8) | 0.0247 (8) | 0.0267 (8) | 0.0034 (6) | 0.0101 (6) | −0.0030 (6) |
C2 | 0.0261 (8) | 0.0287 (9) | 0.0300 (8) | 0.0027 (7) | 0.0075 (7) | −0.0039 (7) |
C3 | 0.0277 (9) | 0.0392 (10) | 0.0263 (8) | 0.0069 (8) | 0.0037 (7) | −0.0012 (7) |
C4 | 0.0333 (9) | 0.0398 (10) | 0.0297 (9) | 0.0066 (8) | 0.0110 (7) | 0.0076 (8) |
C5 | 0.0288 (9) | 0.0330 (9) | 0.0315 (9) | 0.0008 (7) | 0.0127 (7) | 0.0033 (7) |
C6 | 0.0262 (8) | 0.0242 (8) | 0.0256 (8) | 0.0043 (6) | 0.0102 (7) | −0.0016 (6) |
C7 | 0.0258 (8) | 0.0258 (8) | 0.0269 (8) | 0.0028 (7) | 0.0104 (7) | −0.0041 (6) |
C8 | 0.0268 (8) | 0.0244 (8) | 0.0239 (8) | 0.0045 (7) | 0.0070 (6) | −0.0046 (6) |
C9 | 0.0297 (9) | 0.0240 (8) | 0.0272 (8) | 0.0016 (7) | 0.0074 (7) | −0.0012 (6) |
C10 | 0.0298 (9) | 0.0374 (10) | 0.0311 (9) | −0.0024 (8) | 0.0109 (7) | −0.0028 (7) |
C11 | 0.0462 (11) | 0.0334 (10) | 0.0354 (10) | −0.0083 (9) | 0.0065 (8) | 0.0062 (8) |
C12 | 0.0267 (8) | 0.0255 (8) | 0.0277 (8) | 0.0029 (7) | 0.0064 (7) | −0.0019 (7) |
C13 | 0.0291 (8) | 0.0275 (9) | 0.0222 (8) | 0.0022 (7) | 0.0036 (6) | −0.0009 (6) |
C14 | 0.0275 (8) | 0.0240 (8) | 0.0209 (7) | 0.0005 (6) | 0.0066 (6) | 0.0008 (6) |
C15 | 0.0263 (8) | 0.0221 (8) | 0.0206 (7) | 0.0032 (6) | 0.0061 (6) | 0.0033 (6) |
C16 | 0.0252 (8) | 0.0226 (8) | 0.0248 (8) | 0.0004 (6) | 0.0048 (6) | 0.0014 (6) |
C17 | 0.0253 (8) | 0.0222 (8) | 0.0235 (7) | 0.0033 (6) | 0.0067 (6) | 0.0035 (6) |
C18 | 0.0283 (8) | 0.0278 (8) | 0.0288 (8) | 0.0044 (7) | 0.0107 (7) | 0.0007 (7) |
C19 | 0.0332 (9) | 0.0292 (9) | 0.0263 (8) | 0.0061 (7) | 0.0097 (7) | −0.0025 (7) |
C20 | 0.0315 (9) | 0.0253 (8) | 0.0248 (8) | 0.0030 (7) | 0.0030 (7) | −0.0017 (6) |
C21 | 0.0254 (8) | 0.0250 (8) | 0.0261 (8) | 0.0024 (7) | 0.0054 (6) | 0.0015 (6) |
C22 | 0.0252 (8) | 0.0207 (7) | 0.0214 (7) | 0.0038 (6) | 0.0055 (6) | 0.0035 (6) |
C23 | 0.0247 (8) | 0.0226 (8) | 0.0236 (8) | 0.0024 (6) | 0.0074 (6) | 0.0026 (6) |
C24 | 0.0387 (11) | 0.0444 (12) | 0.0467 (12) | −0.0044 (9) | 0.0101 (9) | −0.0109 (10) |
Cl1—C20 | 1.7417 (18) | C10—H10C | 0.9800 |
O1—C12 | 1.224 (2) | C11—H11A | 0.9800 |
O2—C24 | 1.364 (3) | C11—H11B | 0.9800 |
O2—C16 | 1.414 (2) | C11—H11C | 0.9800 |
N1—C9 | 1.318 (2) | C12—C13 | 1.473 (2) |
N1—C1 | 1.369 (2) | C13—C14 | 1.335 (2) |
N2—C16 | 1.303 (2) | C13—H13 | 0.9500 |
N2—C17 | 1.379 (2) | C14—C15 | 1.466 (2) |
C1—C6 | 1.412 (2) | C14—H14 | 0.9500 |
C1—C2 | 1.416 (2) | C15—C23 | 1.370 (2) |
C2—C3 | 1.363 (3) | C15—C16 | 1.435 (2) |
C2—H2 | 0.9500 | C17—C18 | 1.413 (2) |
C3—C4 | 1.409 (3) | C17—C22 | 1.416 (2) |
C3—H3 | 0.9500 | C18—C19 | 1.375 (3) |
C4—C5 | 1.371 (3) | C18—H18 | 0.9500 |
C4—H4 | 0.9500 | C19—C20 | 1.409 (3) |
C5—C6 | 1.417 (2) | C19—H19 | 0.9500 |
C5—H5 | 0.9500 | C20—C21 | 1.371 (2) |
C6—C7 | 1.432 (2) | C21—C22 | 1.414 (2) |
C7—C8 | 1.375 (2) | C21—H21 | 0.9500 |
C7—C10 | 1.502 (2) | C22—C23 | 1.421 (2) |
C8—C9 | 1.431 (2) | C23—H23 | 0.9500 |
C8—C12 | 1.513 (2) | C24—H24A | 0.9800 |
C9—C11 | 1.505 (2) | C24—H24B | 0.9800 |
C10—H10A | 0.9800 | C24—H24C | 0.9800 |
C10—H10B | 0.9800 | ||
C24—O2—C16 | 117.82 (14) | O1—C12—C13 | 121.03 (16) |
C9—N1—C1 | 117.89 (15) | O1—C12—C8 | 120.25 (15) |
C16—N2—C17 | 117.27 (15) | C13—C12—C8 | 118.69 (14) |
N1—C1—C6 | 123.19 (15) | C14—C13—C12 | 122.30 (16) |
N1—C1—C2 | 117.43 (16) | C14—C13—H13 | 118.8 |
C6—C1—C2 | 119.37 (16) | C12—C13—H13 | 118.8 |
C3—C2—C1 | 120.35 (17) | C13—C14—C15 | 125.30 (15) |
C3—C2—H2 | 119.8 | C13—C14—H14 | 117.3 |
C1—C2—H2 | 119.8 | C15—C14—H14 | 117.3 |
C2—C3—C4 | 120.59 (17) | C23—C15—C16 | 117.06 (15) |
C2—C3—H3 | 119.7 | C23—C15—C14 | 123.01 (15) |
C4—C3—H3 | 119.7 | C16—C15—C14 | 119.90 (15) |
C5—C4—C3 | 120.26 (17) | N2—C16—O2 | 118.93 (15) |
C5—C4—H4 | 119.9 | N2—C16—C15 | 125.40 (15) |
C3—C4—H4 | 119.9 | O2—C16—C15 | 115.64 (14) |
C4—C5—C6 | 120.40 (17) | N2—C17—C18 | 118.43 (15) |
C4—C5—H5 | 119.8 | N2—C17—C22 | 122.48 (15) |
C6—C5—H5 | 119.8 | C18—C17—C22 | 119.09 (16) |
C1—C6—C5 | 118.99 (16) | C19—C18—C17 | 120.17 (16) |
C1—C6—C7 | 118.19 (15) | C19—C18—H18 | 119.9 |
C5—C6—C7 | 122.80 (16) | C17—C18—H18 | 119.9 |
C8—C7—C6 | 117.51 (16) | C18—C19—C20 | 119.84 (16) |
C8—C7—C10 | 122.36 (16) | C18—C19—H19 | 120.1 |
C6—C7—C10 | 120.09 (15) | C20—C19—H19 | 120.1 |
C7—C8—C9 | 120.31 (15) | C21—C20—C19 | 121.85 (16) |
C7—C8—C12 | 119.88 (16) | C21—C20—Cl1 | 120.09 (14) |
C9—C8—C12 | 119.78 (15) | C19—C20—Cl1 | 118.05 (13) |
N1—C9—C8 | 122.86 (16) | C20—C21—C22 | 118.66 (16) |
N1—C9—C11 | 116.28 (16) | C20—C21—H21 | 120.7 |
C8—C9—C11 | 120.83 (16) | C22—C21—H21 | 120.7 |
C7—C10—H10A | 109.5 | C21—C22—C17 | 120.28 (15) |
C7—C10—H10B | 109.5 | C21—C22—C23 | 122.08 (15) |
H10A—C10—H10B | 109.5 | C17—C22—C23 | 117.62 (15) |
C7—C10—H10C | 109.5 | C15—C23—C22 | 120.13 (15) |
H10A—C10—H10C | 109.5 | C15—C23—H23 | 119.9 |
H10B—C10—H10C | 109.5 | C22—C23—H23 | 119.9 |
C9—C11—H11A | 109.5 | O2—C24—H24A | 109.5 |
C9—C11—H11B | 109.5 | O2—C24—H24B | 109.5 |
H11A—C11—H11B | 109.5 | H24A—C24—H24B | 109.5 |
C9—C11—H11C | 109.5 | O2—C24—H24C | 109.5 |
H11A—C11—H11C | 109.5 | H24A—C24—H24C | 109.5 |
H11B—C11—H11C | 109.5 | H24B—C24—H24C | 109.5 |
C9—N1—C1—C6 | −1.2 (2) | C8—C12—C13—C14 | 2.2 (3) |
C9—N1—C1—C2 | 177.38 (15) | C12—C13—C14—C15 | −177.90 (16) |
N1—C1—C2—C3 | −179.95 (16) | C13—C14—C15—C23 | 35.7 (3) |
C6—C1—C2—C3 | −1.3 (2) | C13—C14—C15—C16 | −146.59 (18) |
C1—C2—C3—C4 | −0.9 (3) | C17—N2—C16—O2 | 179.06 (14) |
C2—C3—C4—C5 | 1.8 (3) | C17—N2—C16—C15 | 1.2 (2) |
C3—C4—C5—C6 | −0.6 (3) | C24—O2—C16—N2 | 3.1 (2) |
N1—C1—C6—C5 | −178.96 (16) | C24—O2—C16—C15 | −178.80 (16) |
C2—C1—C6—C5 | 2.5 (2) | C23—C15—C16—N2 | −1.9 (2) |
N1—C1—C6—C7 | 2.7 (2) | C14—C15—C16—N2 | −179.71 (16) |
C2—C1—C6—C7 | −175.86 (15) | C23—C15—C16—O2 | −179.79 (14) |
C4—C5—C6—C1 | −1.5 (3) | C14—C15—C16—O2 | 2.4 (2) |
C4—C5—C6—C7 | 176.70 (17) | C16—N2—C17—C18 | −178.75 (15) |
C1—C6—C7—C8 | −2.4 (2) | C16—N2—C17—C22 | 0.8 (2) |
C5—C6—C7—C8 | 179.40 (16) | N2—C17—C18—C19 | −177.67 (16) |
C1—C6—C7—C10 | 175.34 (15) | C22—C17—C18—C19 | 2.7 (2) |
C5—C6—C7—C10 | −2.9 (2) | C17—C18—C19—C20 | 0.3 (3) |
C6—C7—C8—C9 | 0.7 (2) | C18—C19—C20—C21 | −2.3 (3) |
C10—C7—C8—C9 | −176.92 (16) | C18—C19—C20—Cl1 | 176.79 (14) |
C6—C7—C8—C12 | 178.51 (14) | C19—C20—C21—C22 | 1.2 (3) |
C10—C7—C8—C12 | 0.9 (2) | Cl1—C20—C21—C22 | −177.88 (12) |
C1—N1—C9—C8 | −0.6 (2) | C20—C21—C22—C17 | 1.9 (2) |
C1—N1—C9—C11 | −178.50 (16) | C20—C21—C22—C23 | −179.54 (15) |
C7—C8—C9—N1 | 0.8 (3) | N2—C17—C22—C21 | 176.60 (15) |
C12—C8—C9—N1 | −176.98 (15) | C18—C17—C22—C21 | −3.8 (2) |
C7—C8—C9—C11 | 178.64 (17) | N2—C17—C22—C23 | −2.0 (2) |
C12—C8—C9—C11 | 0.8 (2) | C18—C17—C22—C23 | 177.52 (15) |
C7—C8—C12—O1 | −72.2 (2) | C16—C15—C23—C22 | 0.5 (2) |
C9—C8—C12—O1 | 105.6 (2) | C14—C15—C23—C22 | 178.25 (15) |
C7—C8—C12—C13 | 105.55 (19) | C21—C22—C23—C15 | −177.31 (15) |
C9—C8—C12—C13 | −76.6 (2) | C17—C22—C23—C15 | 1.3 (2) |
O1—C12—C13—C14 | 179.89 (18) |
D—H···A | D—H | H···A | D···A | D—H···A |
C10—H10B···O1i | 0.98 | 2.52 | 3.221 (2) | 129 |
Symmetry code: (i) −x+3/2, y+1/2, −z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C10—H10B···O1i | 0.98 | 2.52 | 3.221 (2) | 129 |
Symmetry code: (i) −x+3/2, y+1/2, −z+1/2. |
Footnotes
‡Additional correspondence author, e-mail: prasad24487@yahoo.co.in.
Acknowledgements
RP gratefully acknowledges the Council of Scientific and Industrial Research (CSIR), India, for a Senior Research Fellowship [grant No. 09/919/(0014)/2012 EMR-I]. We also thank the Ministry of Higher Education (Malaysia) for funding structural studies through the High-Impact Research scheme (grant No. UM·C/HIR-MOHE/SC/03).
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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.
Quinoline derivatives are an important class of natural and synthetic products, which possess a number of interesting biological activities, are valuable intermediates in organic synthesis, and exhibit a multitude of photo-physical properties (Prasath & Bhavana, 2012; Joshi et al., 2011). Also, quinolinyl chalcones have gained much attention due to their bio-activity, such as anti-bacterial, anti-fungal, anti-malarial and anti-cancer activities (Prasath et al., 2013a). It was in this connection that the title compound, (I), was investigated.
The molecular structure of (I), Fig. 1, comprises two quinolinyl rings connected by the ends of a prop-2-en-1-one bridge. The dihedral angle between the quinolinyl rings is 63.30 (5)°. The methoxy group is coplanar with the quinolinyl ring to which it is attached, as seen in the value of the C24—O2—C16—N2 torsion angle of 3.1 (2)°. The conformation about the ethylene bond [C13═C14 = 1.335 (2) Å] is E. The central C5O plane comprising the O1, C8 and C12–C15 atoms, is almost planar, with an r.m.s. deviation of 0.022 Å. The N1- and N2-containing quinolinyl rings form dihedral angles of 75.86 (7) and 38.54 (7)°, respectively, with the central plane.
In the most closely related structure, (II), namely (2E)-3-(2-chloro-8-methylquinolin-3-yl)-1-(5,7-dimethylquinolin-6-yl)prop-2-en-1-one (Prasath et al., 2013b), the dihedral angle between the quinolinyl residues is 83.72 (4)°, indicating a more open configuration than that in (I). Also, when the structures are viewed normal to the ethylene bond, the pyridyl-N atoms in (I) can be described as syn, whereas they are closer to anti in (II).
In the crystal, supramolecular helical chains are formed by methyl-C—H···O(carbonyl) interactions, Table 1. These are connected into a three-dimensional architecture by π–π interactions between the rings of centrosymmetrically related N1-quinolinyl residues [3.5341 (10) Å; angle of inclination = 2.48 (9)° for symmetry operation 1 - x, 1 - y, -z] and between the rings of centrosymmetrically related N2-quinolinyl residues [3.8719 (9) Å; angle of inclination = 2.52 (8)° for symmetry operation 1 - x, 2 - y, -z], Fig. 2.