organic compounds
6-Chloro-2-(4-methoxyphenyl)-4-phenylquinoline
aCentre for Research and Development, PRIST University, Vallam, Thanjavur 613 403, India, bDepartment of Chemistry, DDE, Alagappa University, Karaikudi 630 003, India, and cDepartment of Physics, CPCL Polytechnic College, Chennai 600 068, India
*Correspondence e-mail: chakkaravarthi_2005@yahoo.com, crystallography2010@gmail.com
In the title compound, C22H16ClNO, the quinoline ring system makes dihedral angles of 56.30 (6) and 7.93 (6)°, respectively, with the adjacent phenyl and benzene rings. The dihedral angle between these phenyl and benzene rings is 56.97 (8)°. In the crystal, weak C—H⋯π and π–π [centroid–centroid distances of 3.7699 (9) and 3.8390 (9) Å] interactions link the molecules into a layer parallel to the ab plane.
Related literature
For standard bond lengths, see: Allen et al. (1987). For a related structure, see: Akkurt et al. (2004).
Experimental
Crystal data
|
Data collection: APEX2 (Bruker, 2004); cell SAINT (Bruker, 2004); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536813023295/is5297sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813023295/is5297Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813023295/is5297Isup3.cml
5-Chloro-2-aminobenzophenone (1.86 g, 8.05 mmol) and 4-methoxyacetophenone (1.21 g, 8.05 mmol) in the presence of acetic acid (30 ml) and con. H2SO4 (0.5 ml) were stirred under argon at 140 °C for 18 h. After cooling to room temperature, 10% NaOH (100 ml) and dichloromethane (100 ml) were added to the reaction mixture. The organic layer was separated and washed with distilled water (50 ml×5) until a neutral solution was obtained. Later, it was dried over a Na2SO4 and evaporated under the natural condition to yield yellow crystals, suitable for X-Ray diffraction. Yield: 55 %.
H atoms were positioned geometrically with C—H = 0.93 or 0.96 Å and allowed to ride on their parent atoms, with Uiso(H) = 1.2Ueq(C) or 1.5Ueq(Cmethyl).
Data collection: APEX2 (Bruker, 2004); cell
SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The molecular structure of the title compound, with atom labels and 30% probability displacement ellipsoids for non-H atoms. |
C22H16ClNO | F(000) = 720 |
Mr = 345.81 | Dx = 1.365 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 5757 reflections |
a = 10.5922 (5) Å | θ = 2.2–27.2° |
b = 8.2883 (3) Å | µ = 0.24 mm−1 |
c = 19.1885 (9) Å | T = 295 K |
β = 92.988 (3)° | Block, yellow |
V = 1682.29 (13) Å3 | 0.40 × 0.36 × 0.34 mm |
Z = 4 |
Bruker Kappa APEXII diffractometer | 4148 independent reflections |
Radiation source: fine-focus sealed tube | 3244 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.034 |
ω and ϕ scans | θmax = 28.3°, θmin = 2.7° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −12→14 |
Tmin = 0.912, Tmax = 0.924 | k = −10→10 |
12611 measured reflections | l = −25→25 |
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)] = 0.043 | H-atom parameters constrained |
wR(F2) = 0.125 | w = 1/[σ2(Fo2) + (0.0566P)2 + 0.6619P] where P = (Fo2 + 2Fc2)/3 |
S = 1.03 | (Δ/σ)max < 0.001 |
4148 reflections | Δρmax = 0.29 e Å−3 |
228 parameters | Δρmin = −0.44 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: 0.030 (2) |
C22H16ClNO | V = 1682.29 (13) Å3 |
Mr = 345.81 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 10.5922 (5) Å | µ = 0.24 mm−1 |
b = 8.2883 (3) Å | T = 295 K |
c = 19.1885 (9) Å | 0.40 × 0.36 × 0.34 mm |
β = 92.988 (3)° |
Bruker Kappa APEXII diffractometer | 4148 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 3244 reflections with I > 2σ(I) |
Tmin = 0.912, Tmax = 0.924 | Rint = 0.034 |
12611 measured reflections |
R[F2 > 2σ(F2)] = 0.043 | 0 restraints |
wR(F2) = 0.125 | H-atom parameters constrained |
S = 1.03 | Δρmax = 0.29 e Å−3 |
4148 reflections | Δρmin = −0.44 e Å−3 |
228 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 | ||
C1 | 0.10650 (13) | 0.86173 (17) | 0.92160 (8) | 0.0315 (3) | |
C2 | 0.00131 (14) | 0.82128 (18) | 0.87652 (8) | 0.0344 (3) | |
H2 | 0.0020 | 0.8475 | 0.8294 | 0.041* | |
C3 | −0.10138 (14) | 0.74421 (18) | 0.90118 (8) | 0.0325 (3) | |
C4 | −0.09729 (14) | 0.69944 (17) | 0.97278 (7) | 0.0317 (3) | |
C5 | −0.19335 (15) | 0.61042 (18) | 1.00396 (8) | 0.0364 (3) | |
H5 | −0.2641 | 0.5763 | 0.9772 | 0.044* | |
C6 | −0.18207 (15) | 0.57495 (19) | 1.07298 (9) | 0.0384 (3) | |
C7 | −0.07731 (16) | 0.6223 (2) | 1.11478 (8) | 0.0429 (4) | |
H7 | −0.0724 | 0.5979 | 1.1621 | 0.052* | |
C8 | 0.01818 (16) | 0.7050 (2) | 1.08569 (8) | 0.0418 (4) | |
H8 | 0.0888 | 0.7354 | 1.1134 | 0.050* | |
C9 | 0.01122 (14) | 0.74491 (18) | 1.01414 (7) | 0.0334 (3) | |
C10 | −0.21428 (14) | 0.71165 (18) | 0.85403 (8) | 0.0344 (3) | |
C11 | −0.20230 (16) | 0.6298 (2) | 0.79205 (8) | 0.0417 (4) | |
H11 | −0.1237 | 0.5911 | 0.7805 | 0.050* | |
C12 | −0.30662 (19) | 0.6052 (2) | 0.74711 (9) | 0.0527 (5) | |
H12 | −0.2981 | 0.5497 | 0.7055 | 0.063* | |
C13 | −0.42299 (18) | 0.6626 (2) | 0.76372 (10) | 0.0523 (5) | |
H13 | −0.4929 | 0.6459 | 0.7333 | 0.063* | |
C14 | −0.43653 (17) | 0.7446 (2) | 0.82506 (10) | 0.0495 (4) | |
H14 | −0.5154 | 0.7836 | 0.8361 | 0.059* | |
C15 | −0.33255 (16) | 0.7688 (2) | 0.87029 (9) | 0.0420 (4) | |
H15 | −0.3417 | 0.8238 | 0.9120 | 0.050* | |
C16 | 0.21525 (14) | 0.95295 (17) | 0.89617 (8) | 0.0323 (3) | |
C17 | 0.30751 (16) | 1.0092 (2) | 0.94365 (8) | 0.0403 (4) | |
H17 | 0.3017 | 0.9842 | 0.9906 | 0.048* | |
C18 | 0.40815 (16) | 1.1014 (2) | 0.92371 (9) | 0.0440 (4) | |
H18 | 0.4691 | 1.1366 | 0.9569 | 0.053* | |
C19 | 0.41774 (15) | 1.14080 (19) | 0.85434 (9) | 0.0391 (4) | |
C20 | 0.32825 (16) | 1.0835 (2) | 0.80568 (9) | 0.0423 (4) | |
H20 | 0.3349 | 1.1082 | 0.7587 | 0.051* | |
C21 | 0.22887 (15) | 0.9899 (2) | 0.82607 (8) | 0.0382 (3) | |
H21 | 0.1701 | 0.9509 | 0.7925 | 0.046* | |
C22 | 0.60395 (19) | 1.2957 (3) | 0.87780 (12) | 0.0627 (6) | |
H22A | 0.5638 | 1.3594 | 0.9121 | 0.094* | |
H22B | 0.6622 | 1.3618 | 0.8539 | 0.094* | |
H22C | 0.6487 | 1.2079 | 0.9004 | 0.094* | |
N1 | 0.11065 (12) | 0.82580 (16) | 0.98859 (6) | 0.0354 (3) | |
O1 | 0.51123 (12) | 1.23407 (17) | 0.82929 (7) | 0.0548 (3) | |
Cl1 | −0.30154 (4) | 0.46790 (6) | 1.11096 (3) | 0.05376 (17) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0295 (7) | 0.0299 (7) | 0.0352 (7) | 0.0002 (6) | 0.0024 (6) | −0.0002 (6) |
C2 | 0.0343 (7) | 0.0371 (8) | 0.0318 (7) | −0.0013 (6) | 0.0014 (6) | 0.0031 (6) |
C3 | 0.0314 (7) | 0.0324 (7) | 0.0337 (7) | −0.0014 (6) | 0.0006 (6) | −0.0011 (6) |
C4 | 0.0314 (7) | 0.0308 (7) | 0.0331 (7) | 0.0001 (6) | 0.0034 (6) | −0.0002 (6) |
C5 | 0.0324 (7) | 0.0357 (8) | 0.0413 (8) | −0.0020 (6) | 0.0037 (6) | −0.0004 (6) |
C6 | 0.0377 (8) | 0.0345 (8) | 0.0442 (8) | 0.0026 (6) | 0.0133 (7) | 0.0052 (6) |
C7 | 0.0456 (9) | 0.0502 (10) | 0.0335 (8) | 0.0033 (8) | 0.0059 (7) | 0.0064 (7) |
C8 | 0.0396 (8) | 0.0532 (10) | 0.0325 (7) | −0.0024 (7) | −0.0003 (6) | 0.0026 (7) |
C9 | 0.0316 (7) | 0.0351 (7) | 0.0336 (7) | 0.0008 (6) | 0.0030 (6) | −0.0003 (6) |
C10 | 0.0328 (8) | 0.0359 (8) | 0.0344 (7) | −0.0066 (6) | −0.0002 (6) | 0.0045 (6) |
C11 | 0.0393 (9) | 0.0485 (9) | 0.0374 (8) | −0.0043 (7) | 0.0035 (7) | −0.0005 (7) |
C12 | 0.0616 (12) | 0.0567 (11) | 0.0390 (9) | −0.0115 (9) | −0.0044 (8) | −0.0038 (8) |
C13 | 0.0484 (10) | 0.0555 (11) | 0.0511 (10) | −0.0127 (9) | −0.0169 (8) | 0.0077 (8) |
C14 | 0.0343 (9) | 0.0498 (10) | 0.0638 (11) | −0.0017 (7) | −0.0044 (8) | 0.0068 (9) |
C15 | 0.0375 (8) | 0.0448 (9) | 0.0435 (9) | −0.0014 (7) | 0.0001 (7) | −0.0024 (7) |
C16 | 0.0284 (7) | 0.0319 (7) | 0.0369 (7) | 0.0004 (6) | 0.0035 (6) | −0.0008 (6) |
C17 | 0.0405 (9) | 0.0459 (9) | 0.0346 (7) | −0.0094 (7) | 0.0039 (6) | 0.0007 (7) |
C18 | 0.0381 (8) | 0.0482 (9) | 0.0458 (9) | −0.0119 (7) | 0.0043 (7) | −0.0055 (7) |
C19 | 0.0349 (8) | 0.0357 (8) | 0.0481 (9) | −0.0024 (6) | 0.0139 (7) | −0.0004 (7) |
C20 | 0.0415 (9) | 0.0478 (9) | 0.0386 (8) | −0.0002 (7) | 0.0111 (7) | 0.0035 (7) |
C21 | 0.0339 (8) | 0.0437 (9) | 0.0368 (8) | −0.0016 (6) | 0.0012 (6) | −0.0002 (6) |
C22 | 0.0443 (10) | 0.0639 (13) | 0.0804 (14) | −0.0197 (9) | 0.0077 (10) | 0.0101 (11) |
N1 | 0.0310 (6) | 0.0405 (7) | 0.0345 (6) | −0.0028 (5) | 0.0010 (5) | 0.0012 (5) |
O1 | 0.0450 (7) | 0.0609 (8) | 0.0599 (8) | −0.0171 (6) | 0.0170 (6) | 0.0020 (6) |
Cl1 | 0.0495 (3) | 0.0526 (3) | 0.0610 (3) | −0.00404 (19) | 0.0196 (2) | 0.0144 (2) |
C1—N1 | 1.3180 (19) | C12—C13 | 1.374 (3) |
C1—C2 | 1.415 (2) | C12—H12 | 0.9300 |
C1—C16 | 1.482 (2) | C13—C14 | 1.373 (3) |
C2—C3 | 1.367 (2) | C13—H13 | 0.9300 |
C2—H2 | 0.9300 | C14—C15 | 1.381 (2) |
C3—C4 | 1.422 (2) | C14—H14 | 0.9300 |
C3—C10 | 1.486 (2) | C15—H15 | 0.9300 |
C4—C9 | 1.413 (2) | C16—C17 | 1.382 (2) |
C4—C5 | 1.415 (2) | C16—C21 | 1.394 (2) |
C5—C6 | 1.356 (2) | C17—C18 | 1.382 (2) |
C5—H5 | 0.9300 | C17—H17 | 0.9300 |
C6—C7 | 1.391 (2) | C18—C19 | 1.379 (2) |
C6—Cl1 | 1.7366 (16) | C18—H18 | 0.9300 |
C7—C8 | 1.365 (2) | C19—O1 | 1.3635 (18) |
C7—H7 | 0.9300 | C19—C20 | 1.380 (2) |
C8—C9 | 1.410 (2) | C20—C21 | 1.381 (2) |
C8—H8 | 0.9300 | C20—H20 | 0.9300 |
C9—N1 | 1.3612 (19) | C21—H21 | 0.9300 |
C10—C11 | 1.381 (2) | C22—O1 | 1.413 (2) |
C10—C15 | 1.390 (2) | C22—H22A | 0.9600 |
C11—C12 | 1.381 (2) | C22—H22B | 0.9600 |
C11—H11 | 0.9300 | C22—H22C | 0.9600 |
N1—C1—C2 | 121.87 (13) | C14—C13—C12 | 120.35 (16) |
N1—C1—C16 | 116.71 (13) | C14—C13—H13 | 119.8 |
C2—C1—C16 | 121.37 (13) | C12—C13—H13 | 119.8 |
C3—C2—C1 | 120.97 (13) | C13—C14—C15 | 119.68 (17) |
C3—C2—H2 | 119.5 | C13—C14—H14 | 120.2 |
C1—C2—H2 | 119.5 | C15—C14—H14 | 120.2 |
C2—C3—C4 | 118.15 (13) | C14—C15—C10 | 120.54 (16) |
C2—C3—C10 | 120.24 (13) | C14—C15—H15 | 119.7 |
C4—C3—C10 | 121.60 (13) | C10—C15—H15 | 119.7 |
C9—C4—C5 | 118.91 (13) | C17—C16—C21 | 117.17 (14) |
C9—C4—C3 | 117.13 (13) | C17—C16—C1 | 119.35 (14) |
C5—C4—C3 | 123.95 (14) | C21—C16—C1 | 123.45 (14) |
C6—C5—C4 | 119.84 (15) | C18—C17—C16 | 122.22 (15) |
C6—C5—H5 | 120.1 | C18—C17—H17 | 118.9 |
C4—C5—H5 | 120.1 | C16—C17—H17 | 118.9 |
C5—C6—C7 | 121.92 (15) | C19—C18—C17 | 119.66 (15) |
C5—C6—Cl1 | 119.45 (13) | C19—C18—H18 | 120.2 |
C7—C6—Cl1 | 118.63 (13) | C17—C18—H18 | 120.2 |
C8—C7—C6 | 119.46 (15) | O1—C19—C18 | 124.46 (16) |
C8—C7—H7 | 120.3 | O1—C19—C20 | 116.26 (15) |
C6—C7—H7 | 120.3 | C18—C19—C20 | 119.28 (14) |
C7—C8—C9 | 120.90 (15) | C19—C20—C21 | 120.57 (15) |
C7—C8—H8 | 119.6 | C19—C20—H20 | 119.7 |
C9—C8—H8 | 119.6 | C21—C20—H20 | 119.7 |
N1—C9—C8 | 117.64 (14) | C20—C21—C16 | 121.04 (15) |
N1—C9—C4 | 123.43 (13) | C20—C21—H21 | 119.5 |
C8—C9—C4 | 118.93 (14) | C16—C21—H21 | 119.5 |
C11—C10—C15 | 119.02 (15) | O1—C22—H22A | 109.5 |
C11—C10—C3 | 120.43 (14) | O1—C22—H22B | 109.5 |
C15—C10—C3 | 120.50 (14) | H22A—C22—H22B | 109.5 |
C10—C11—C12 | 120.26 (16) | O1—C22—H22C | 109.5 |
C10—C11—H11 | 119.9 | H22A—C22—H22C | 109.5 |
C12—C11—H11 | 119.9 | H22B—C22—H22C | 109.5 |
C13—C12—C11 | 120.15 (17) | C1—N1—C9 | 118.39 (13) |
C13—C12—H12 | 119.9 | C19—O1—C22 | 117.74 (14) |
C11—C12—H12 | 119.9 | ||
N1—C1—C2—C3 | 0.7 (2) | C10—C11—C12—C13 | 0.2 (3) |
C16—C1—C2—C3 | −176.68 (14) | C11—C12—C13—C14 | −0.1 (3) |
C1—C2—C3—C4 | −2.7 (2) | C12—C13—C14—C15 | −0.2 (3) |
C1—C2—C3—C10 | 176.23 (14) | C13—C14—C15—C10 | 0.3 (3) |
C2—C3—C4—C9 | 2.8 (2) | C11—C10—C15—C14 | −0.2 (2) |
C10—C3—C4—C9 | −176.10 (14) | C3—C10—C15—C14 | 177.21 (15) |
C2—C3—C4—C5 | −175.86 (14) | N1—C1—C16—C17 | −6.4 (2) |
C10—C3—C4—C5 | 5.2 (2) | C2—C1—C16—C17 | 171.08 (15) |
C9—C4—C5—C6 | 2.2 (2) | N1—C1—C16—C21 | 175.34 (14) |
C3—C4—C5—C6 | −179.14 (15) | C2—C1—C16—C21 | −7.2 (2) |
C4—C5—C6—C7 | −0.6 (2) | C21—C16—C17—C18 | 1.4 (2) |
C4—C5—C6—Cl1 | 179.16 (11) | C1—C16—C17—C18 | −176.93 (15) |
C5—C6—C7—C8 | −1.0 (3) | C16—C17—C18—C19 | 0.6 (3) |
Cl1—C6—C7—C8 | 179.27 (13) | C17—C18—C19—O1 | 178.35 (16) |
C6—C7—C8—C9 | 0.9 (3) | C17—C18—C19—C20 | −1.8 (3) |
C7—C8—C9—N1 | −179.24 (15) | O1—C19—C20—C21 | −179.09 (15) |
C7—C8—C9—C4 | 0.7 (2) | C18—C19—C20—C21 | 1.0 (3) |
C5—C4—C9—N1 | 177.71 (14) | C19—C20—C21—C16 | 1.0 (3) |
C3—C4—C9—N1 | −1.0 (2) | C17—C16—C21—C20 | −2.2 (2) |
C5—C4—C9—C8 | −2.2 (2) | C1—C16—C21—C20 | 176.10 (14) |
C3—C4—C9—C8 | 179.04 (14) | C2—C1—N1—C9 | 1.2 (2) |
C2—C3—C10—C11 | 54.3 (2) | C16—C1—N1—C9 | 178.68 (12) |
C4—C3—C10—C11 | −126.74 (17) | C8—C9—N1—C1 | 178.93 (14) |
C2—C3—C10—C15 | −123.02 (17) | C4—C9—N1—C1 | −1.0 (2) |
C4—C3—C10—C15 | 55.9 (2) | C18—C19—O1—C22 | −0.6 (3) |
C15—C10—C11—C12 | −0.1 (2) | C20—C19—O1—C22 | 179.54 (17) |
C3—C10—C11—C12 | −177.51 (15) |
Cg3 and Cg4 are the centroids of the C10–C15 and C16–C19 rings, respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
C14—H14···Cg4i | 0.93 | 2.63 | 3.7695 (19) | 151 |
C22—H22B···Cg3ii | 0.96 | 2.84 | 3.613 (3) | 138 |
Symmetry codes: (i) x−1, y, z; (ii) x+1, y+1, z. |
Cg3 and Cg4 are the centroids of the C10–C15 and C16–C19 rings, respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
C14—H14···Cg4i | 0.93 | 2.63 | 3.7695 (19) | 151 |
C22—H22B···Cg3ii | 0.96 | 2.84 | 3.613 (3) | 138 |
Symmetry codes: (i) x−1, y, z; (ii) x+1, y+1, z. |
Acknowledgements
The authors acknowledge the STIC, Cochin University of Technology, Cochin, for the data collection. VT and NS also acknowledge the UGC [project 40–46/2011 (SR)], New Delhi.
References
Akkurt, M., Öztürk, S., Küçükbay, H., Orhan, E. & Büyükgüngör, O. (2004). Acta Cryst. E60, o1266–o1268. Web of Science CSD CrossRef CAS IUCr Journals Google Scholar
Allen, F. H., Kennard, O., Watson, D. G., Brammer, L., Orpen, A. G. & Taylor, R. (1987). J. Chem. Soc. Perkin Trans. 2, pp. S1–19. CrossRef Web of Science Google Scholar
Bruker (2004). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Spek, A. L. (2009). Acta Cryst. D65, 148–155. Web of Science CrossRef CAS 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.
The geometric parameters of the title compound (Fig. 1) are within the normal range (Allen et al., 1987) and are comparable with the similar reported structure (Akkurt et al., 2004). The quinoxaline ring system is almost planar [maximum deviation of C3 atom from the mean plane is 0.0345 (16)Å]. The dihedral angle between the phenyl ring (C10–C15) and methoxyphenyl ring (C16–C21) is 56.97 (8)°. The crystal structure exhibit weak C—H···π (Table 1) and π–π [Cg1···Cg2i distance 3.7699 (9) Å and Cg2···Cg4ii distance 3.8390 (9) Å; (i) -x, 1 - y, 2 - z; (ii) -x, 2 - y, 2 - z; Cg1, Cg2 and Cg4 are the centroids of the rings (C1/C2/C3/C4/C9/N1), (C4–C9) and (C16–C21), respectively] interactions which leads to the of packing of the molecules.