organic compounds
(Z)-3-(9-Anthryl)-1-(4-chlorophenyl)-2-(4-nitro-1H-imidazol-1-yl)prop-2-en-1-one
aSchool of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
*Correspondence e-mail: zhouch@swu.edu.cn
In the title compound, C26H16ClN3O3, the dihedral angle between the anthracene mean plane and imidazole ring is 64.75 (2)°. In the crystal, π–π interactions between anthracene fragments lead to the formation of stacks of molecules propagating in [100]. The short distance between the carbonyl groups of symmetry-related molecules [C⋯O = 2.985 (2) Å] indicates the existence of dipole–dipole interactions. The crystal packing also exhibits short intermolecular contacts between the nitro groups and Cl atoms [Cl⋯O = 3.181 (2) Å].
Related literature
For general background, see: Corrêa et al. (2001); Daskiewicz et al. (2005); Sivakumar et al. (2009); Vogel et al. (2008). The synthesis was described by Erhardt et al. (1985).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2001); cell SAINT (Bruker, 2001); 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: PLATON.
Supporting information
10.1107/S1600536809014676/cv2548sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809014676/cv2548Isup2.hkl
Compound (I) was synthesized according to the procedure of Erhardt et al. (1985). A crystal of (I) suitable for X-ray analysis was grown from a mixture solution of chloroform and acetone by slow evaporation at room temperature.
All the hydrogen atoms were placed at their geometrical positions with C—H = 0.93Å and Uiso(H) = 1.2Ueq(C).
Data collection: SMART (Bruker, 2001); cell
SAINT (Bruker, 2001); data reduction: SAINT (Bruker, 2001); 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: PLATON (Spek, 2009).Fig. 1. The molecular structure of (I) showing the atomic numbering and 30% probability displacement ellipsoids. |
C26H16ClN3O3 | Z = 2 |
Mr = 453.87 | F(000) = 468 |
Triclinic, P1 | Dx = 1.427 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 8.0511 (9) Å | Cell parameters from 2837 reflections |
b = 11.0406 (12) Å | θ = 1.4–25.3° |
c = 12.9274 (14) Å | µ = 0.22 mm−1 |
α = 76.065 (2)° | T = 292 K |
β = 85.974 (2)° | Block, orange |
γ = 71.258 (2)° | 0.16 × 0.12 × 0.10 mm |
V = 1056.1 (2) Å3 |
Bruker SMART APEX CCD area-detector diffractometer | 4070 independent reflections |
Radiation source: fine focus sealed Siemens Mo tube | 3354 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.014 |
0.3° wide ω exposures scans | θmax = 26.0°, θmin = 2.0° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1997) | h = −9→9 |
Tmin = 0.956, Tmax = 0.979 | k = −13→10 |
6168 measured reflections | l = −15→15 |
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)] = 0.044 | H-atom parameters constrained |
wR(F2) = 0.113 | w = 1/[σ2(Fo2) + (0.0441P)2 + 0.4068P] where P = (Fo2 + 2Fc2)/3 |
S = 1.04 | (Δ/σ)max = 0.001 |
4070 reflections | Δρmax = 0.56 e Å−3 |
299 parameters | Δρmin = −0.50 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: 0.138 (5) |
C26H16ClN3O3 | γ = 71.258 (2)° |
Mr = 453.87 | V = 1056.1 (2) Å3 |
Triclinic, P1 | Z = 2 |
a = 8.0511 (9) Å | Mo Kα radiation |
b = 11.0406 (12) Å | µ = 0.22 mm−1 |
c = 12.9274 (14) Å | T = 292 K |
α = 76.065 (2)° | 0.16 × 0.12 × 0.10 mm |
β = 85.974 (2)° |
Bruker SMART APEX CCD area-detector diffractometer | 4070 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1997) | 3354 reflections with I > 2σ(I) |
Tmin = 0.956, Tmax = 0.979 | Rint = 0.014 |
6168 measured reflections |
R[F2 > 2σ(F2)] = 0.044 | 0 restraints |
wR(F2) = 0.113 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.56 e Å−3 |
4070 reflections | Δρmin = −0.50 e Å−3 |
299 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. |
x | y | z | Uiso*/Ueq | ||
C1 | 0.4503 (2) | 0.91044 (16) | 0.38505 (12) | 0.0381 (4) | |
C2 | 0.3150 (2) | 0.99845 (18) | 0.43057 (13) | 0.0427 (4) | |
C3 | 0.2324 (3) | 1.13103 (19) | 0.37653 (16) | 0.0532 (5) | |
H3 | 0.2673 | 1.1618 | 0.3078 | 0.064* | |
C4 | 0.1039 (3) | 1.2135 (2) | 0.4233 (2) | 0.0690 (6) | |
H4 | 0.0521 | 1.2999 | 0.3863 | 0.083* | |
C5 | 0.0482 (3) | 1.1702 (3) | 0.5267 (2) | 0.0758 (7) | |
H5 | −0.0389 | 1.2284 | 0.5581 | 0.091* | |
C6 | 0.1195 (3) | 1.0455 (3) | 0.58072 (18) | 0.0671 (6) | |
H6 | 0.0806 | 1.0181 | 0.6491 | 0.080* | |
C7 | 0.2544 (2) | 0.9537 (2) | 0.53486 (14) | 0.0507 (5) | |
C8 | 0.3284 (3) | 0.8240 (2) | 0.58804 (14) | 0.0570 (5) | |
H8 | 0.2870 | 0.7948 | 0.6553 | 0.068* | |
C9 | 0.4618 (3) | 0.7360 (2) | 0.54475 (14) | 0.0528 (5) | |
C10 | 0.5404 (4) | 0.6035 (2) | 0.60138 (18) | 0.0751 (7) | |
H10 | 0.4981 | 0.5739 | 0.6682 | 0.090* | |
C11 | 0.6738 (4) | 0.5211 (2) | 0.5604 (2) | 0.0864 (8) | |
H11 | 0.7210 | 0.4345 | 0.5983 | 0.104* | |
C12 | 0.7438 (4) | 0.5643 (2) | 0.45999 (19) | 0.0730 (7) | |
H12 | 0.8385 | 0.5065 | 0.4332 | 0.088* | |
C13 | 0.6736 (3) | 0.68926 (18) | 0.40237 (15) | 0.0516 (5) | |
H13 | 0.7218 | 0.7164 | 0.3368 | 0.062* | |
C14 | 0.5276 (2) | 0.77936 (17) | 0.44076 (13) | 0.0428 (4) | |
C15 | 0.5225 (2) | 0.96316 (15) | 0.28220 (12) | 0.0370 (4) | |
H15 | 0.5605 | 1.0348 | 0.2804 | 0.044* | |
C16 | 0.5410 (2) | 0.92308 (15) | 0.19171 (12) | 0.0351 (4) | |
C17 | 0.6425 (2) | 0.97302 (15) | 0.10011 (12) | 0.0364 (4) | |
C18 | 0.6982 (2) | 1.08892 (16) | 0.10310 (12) | 0.0372 (4) | |
C19 | 0.5813 (2) | 1.21059 (17) | 0.10958 (14) | 0.0442 (4) | |
H19 | 0.4615 | 1.2227 | 0.1122 | 0.053* | |
C20 | 0.6414 (3) | 1.31410 (18) | 0.11219 (15) | 0.0503 (5) | |
H20 | 0.5631 | 1.3961 | 0.1153 | 0.060* | |
C21 | 0.8197 (3) | 1.29305 (19) | 0.11011 (15) | 0.0532 (5) | |
C22 | 0.9379 (3) | 1.1743 (2) | 0.10195 (16) | 0.0563 (5) | |
H22 | 1.0576 | 1.1626 | 0.0995 | 0.068* | |
C23 | 0.8762 (2) | 1.07254 (18) | 0.09746 (15) | 0.0474 (4) | |
H23 | 0.9550 | 0.9922 | 0.0906 | 0.057* | |
C24 | 0.5604 (3) | 0.70649 (17) | 0.15237 (15) | 0.0488 (4) | |
H24 | 0.6791 | 0.6812 | 0.1360 | 0.059* | |
C25 | 0.2993 (3) | 0.70981 (18) | 0.17933 (14) | 0.0480 (4) | |
C26 | 0.3024 (2) | 0.82478 (17) | 0.19785 (13) | 0.0425 (4) | |
H26 | 0.2098 | 0.8902 | 0.2183 | 0.051* | |
Cl1 | 0.90255 (10) | 1.41713 (6) | 0.11994 (6) | 0.0886 (3) | |
N1 | 0.47212 (18) | 0.82266 (13) | 0.17975 (10) | 0.0378 (3) | |
N2 | 0.4588 (2) | 0.63534 (15) | 0.15188 (13) | 0.0554 (4) | |
N3 | 0.1473 (3) | 0.6670 (2) | 0.18554 (14) | 0.0685 (5) | |
O1 | 0.68863 (17) | 0.91581 (12) | 0.02841 (10) | 0.0486 (3) | |
O2 | 0.0083 (3) | 0.7406 (2) | 0.21193 (17) | 0.0925 (6) | |
O3 | 0.1648 (3) | 0.5612 (2) | 0.16539 (18) | 0.1061 (7) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0429 (9) | 0.0474 (9) | 0.0326 (8) | −0.0239 (7) | −0.0008 (7) | −0.0116 (7) |
C2 | 0.0408 (9) | 0.0578 (11) | 0.0399 (9) | −0.0234 (8) | 0.0005 (7) | −0.0200 (8) |
C3 | 0.0511 (11) | 0.0579 (12) | 0.0554 (11) | −0.0168 (9) | −0.0008 (9) | −0.0223 (9) |
C4 | 0.0561 (13) | 0.0703 (14) | 0.0842 (16) | −0.0094 (11) | −0.0040 (11) | −0.0377 (13) |
C5 | 0.0495 (13) | 0.108 (2) | 0.0832 (17) | −0.0176 (13) | 0.0071 (11) | −0.0576 (16) |
C6 | 0.0482 (12) | 0.119 (2) | 0.0535 (12) | −0.0369 (13) | 0.0112 (9) | −0.0440 (13) |
C7 | 0.0441 (10) | 0.0823 (14) | 0.0407 (9) | −0.0335 (10) | 0.0028 (8) | −0.0241 (10) |
C8 | 0.0605 (12) | 0.0901 (16) | 0.0345 (9) | −0.0445 (12) | 0.0046 (8) | −0.0135 (10) |
C9 | 0.0681 (13) | 0.0633 (12) | 0.0366 (9) | −0.0377 (10) | −0.0063 (8) | −0.0040 (8) |
C10 | 0.113 (2) | 0.0690 (15) | 0.0459 (12) | −0.0430 (15) | −0.0093 (12) | 0.0035 (11) |
C11 | 0.137 (3) | 0.0527 (13) | 0.0578 (14) | −0.0232 (15) | −0.0204 (15) | 0.0063 (11) |
C12 | 0.0934 (18) | 0.0528 (12) | 0.0627 (14) | −0.0081 (12) | −0.0162 (12) | −0.0099 (10) |
C13 | 0.0619 (12) | 0.0490 (10) | 0.0441 (10) | −0.0177 (9) | −0.0071 (9) | −0.0085 (8) |
C14 | 0.0505 (10) | 0.0486 (10) | 0.0365 (9) | −0.0249 (8) | −0.0043 (7) | −0.0089 (7) |
C15 | 0.0408 (9) | 0.0366 (8) | 0.0385 (8) | −0.0177 (7) | −0.0019 (7) | −0.0091 (7) |
C16 | 0.0384 (9) | 0.0322 (8) | 0.0376 (8) | −0.0142 (6) | −0.0030 (6) | −0.0083 (6) |
C17 | 0.0361 (8) | 0.0373 (8) | 0.0358 (8) | −0.0104 (7) | −0.0018 (6) | −0.0092 (7) |
C18 | 0.0439 (9) | 0.0390 (8) | 0.0318 (8) | −0.0178 (7) | 0.0038 (6) | −0.0080 (6) |
C19 | 0.0456 (10) | 0.0416 (9) | 0.0458 (9) | −0.0154 (8) | 0.0034 (7) | −0.0092 (7) |
C20 | 0.0647 (12) | 0.0386 (9) | 0.0493 (10) | −0.0194 (8) | 0.0072 (9) | −0.0107 (8) |
C21 | 0.0713 (13) | 0.0516 (11) | 0.0508 (11) | −0.0378 (10) | 0.0146 (9) | −0.0169 (9) |
C22 | 0.0508 (11) | 0.0676 (13) | 0.0648 (12) | −0.0333 (10) | 0.0149 (9) | −0.0256 (10) |
C23 | 0.0452 (10) | 0.0499 (10) | 0.0526 (10) | −0.0186 (8) | 0.0091 (8) | −0.0195 (8) |
C24 | 0.0616 (12) | 0.0385 (9) | 0.0507 (10) | −0.0185 (8) | 0.0026 (8) | −0.0152 (8) |
C25 | 0.0647 (12) | 0.0497 (10) | 0.0391 (9) | −0.0343 (9) | −0.0065 (8) | −0.0038 (8) |
C26 | 0.0461 (10) | 0.0467 (9) | 0.0402 (9) | −0.0221 (8) | −0.0022 (7) | −0.0089 (7) |
Cl1 | 0.1041 (5) | 0.0745 (4) | 0.1183 (6) | −0.0626 (4) | 0.0236 (4) | −0.0392 (4) |
N1 | 0.0449 (8) | 0.0364 (7) | 0.0372 (7) | −0.0181 (6) | −0.0005 (6) | −0.0107 (6) |
N2 | 0.0803 (12) | 0.0435 (9) | 0.0524 (9) | −0.0313 (8) | −0.0009 (8) | −0.0133 (7) |
N3 | 0.0902 (15) | 0.0785 (13) | 0.0566 (10) | −0.0601 (12) | −0.0108 (10) | −0.0030 (9) |
O1 | 0.0552 (8) | 0.0524 (7) | 0.0465 (7) | −0.0217 (6) | 0.0111 (6) | −0.0232 (6) |
O2 | 0.0715 (12) | 0.1073 (15) | 0.1141 (15) | −0.0560 (11) | 0.0001 (11) | −0.0155 (12) |
O3 | 0.1425 (18) | 0.1018 (14) | 0.1193 (16) | −0.0927 (14) | −0.0026 (13) | −0.0342 (12) |
C1—C2 | 1.408 (2) | C15—H15 | 0.9300 |
C1—C14 | 1.408 (2) | C16—N1 | 1.4318 (19) |
C1—C15 | 1.477 (2) | C16—C17 | 1.488 (2) |
C2—C3 | 1.421 (3) | C17—O1 | 1.2162 (19) |
C2—C7 | 1.429 (2) | C17—C18 | 1.495 (2) |
C3—C4 | 1.355 (3) | C18—C23 | 1.384 (2) |
C3—H3 | 0.9300 | C18—C19 | 1.389 (2) |
C4—C5 | 1.402 (4) | C19—C20 | 1.384 (2) |
C4—H4 | 0.9300 | C19—H19 | 0.9300 |
C5—C6 | 1.341 (4) | C20—C21 | 1.378 (3) |
C5—H5 | 0.9300 | C20—H20 | 0.9300 |
C6—C7 | 1.432 (3) | C21—C22 | 1.374 (3) |
C6—H6 | 0.9300 | C21—Cl1 | 1.7382 (18) |
C7—C8 | 1.384 (3) | C22—C23 | 1.380 (3) |
C8—C9 | 1.385 (3) | C22—H22 | 0.9300 |
C8—H8 | 0.9300 | C23—H23 | 0.9300 |
C9—C10 | 1.425 (3) | C24—N2 | 1.305 (2) |
C9—C14 | 1.439 (2) | C24—N1 | 1.369 (2) |
C10—C11 | 1.336 (4) | C24—H24 | 0.9300 |
C10—H10 | 0.9300 | C25—C26 | 1.355 (2) |
C11—C12 | 1.415 (4) | C25—N2 | 1.360 (3) |
C11—H11 | 0.9300 | C25—N3 | 1.437 (3) |
C12—C13 | 1.357 (3) | C26—N1 | 1.364 (2) |
C12—H12 | 0.9300 | C26—H26 | 0.9300 |
C13—C14 | 1.422 (3) | N3—O3 | 1.219 (3) |
C13—H13 | 0.9300 | N3—O2 | 1.235 (3) |
C15—C16 | 1.330 (2) | ||
C17···O1i | 2.985 (2) | Cg1···Cg2iii | 3.746 (7) |
Cl1···O3ii | 3.181 (3) | Cg2···Cg2iv | 3.863 (8) |
C2—C1—C14 | 121.15 (15) | C16—C15—H15 | 115.3 |
C2—C1—C15 | 117.97 (15) | C1—C15—H15 | 115.3 |
C14—C1—C15 | 120.54 (15) | C15—C16—N1 | 121.23 (14) |
C1—C2—C3 | 122.84 (16) | C15—C16—C17 | 122.54 (14) |
C1—C2—C7 | 119.41 (17) | N1—C16—C17 | 116.12 (13) |
C3—C2—C7 | 117.74 (17) | O1—C17—C16 | 120.77 (14) |
C4—C3—C2 | 121.3 (2) | O1—C17—C18 | 120.97 (14) |
C4—C3—H3 | 119.4 | C16—C17—C18 | 118.09 (13) |
C2—C3—H3 | 119.4 | C23—C18—C19 | 119.23 (15) |
C3—C4—C5 | 120.8 (2) | C23—C18—C17 | 117.30 (15) |
C3—C4—H4 | 119.6 | C19—C18—C17 | 123.47 (15) |
C5—C4—H4 | 119.6 | C20—C19—C18 | 120.67 (17) |
C6—C5—C4 | 120.4 (2) | C20—C19—H19 | 119.7 |
C6—C5—H5 | 119.8 | C18—C19—H19 | 119.7 |
C4—C5—H5 | 119.8 | C21—C20—C19 | 118.55 (17) |
C5—C6—C7 | 121.2 (2) | C21—C20—H20 | 120.7 |
C5—C6—H6 | 119.4 | C19—C20—H20 | 120.7 |
C7—C6—H6 | 119.4 | C22—C21—C20 | 121.89 (17) |
C8—C7—C2 | 119.04 (17) | C22—C21—Cl1 | 117.65 (16) |
C8—C7—C6 | 122.40 (19) | C20—C21—Cl1 | 120.45 (15) |
C2—C7—C6 | 118.6 (2) | C21—C22—C23 | 118.98 (18) |
C7—C8—C9 | 122.41 (17) | C21—C22—H22 | 120.5 |
C7—C8—H8 | 118.8 | C23—C22—H22 | 120.5 |
C9—C8—H8 | 118.8 | C22—C23—C18 | 120.63 (17) |
C8—C9—C10 | 121.97 (19) | C22—C23—H23 | 119.7 |
C8—C9—C14 | 119.60 (18) | C18—C23—H23 | 119.7 |
C10—C9—C14 | 118.4 (2) | N2—C24—N1 | 112.21 (18) |
C11—C10—C9 | 121.4 (2) | N2—C24—H24 | 123.9 |
C11—C10—H10 | 119.3 | N1—C24—H24 | 123.9 |
C9—C10—H10 | 119.3 | C26—C25—N2 | 112.81 (16) |
C10—C11—C12 | 120.6 (2) | C26—C25—N3 | 125.7 (2) |
C10—C11—H11 | 119.7 | N2—C25—N3 | 121.48 (18) |
C12—C11—H11 | 119.7 | C25—C26—N1 | 104.26 (16) |
C13—C12—C11 | 120.5 (2) | C25—C26—H26 | 127.9 |
C13—C12—H12 | 119.7 | N1—C26—H26 | 127.9 |
C11—C12—H12 | 119.7 | C26—N1—C24 | 106.95 (14) |
C12—C13—C14 | 121.0 (2) | C26—N1—C16 | 125.02 (14) |
C12—C13—H13 | 119.5 | C24—N1—C16 | 128.00 (15) |
C14—C13—H13 | 119.5 | C24—N2—C25 | 103.77 (15) |
C1—C14—C13 | 123.55 (16) | O3—N3—O2 | 124.9 (2) |
C1—C14—C9 | 118.36 (17) | O3—N3—C25 | 118.1 (2) |
C13—C14—C9 | 118.00 (17) | O2—N3—C25 | 116.95 (19) |
C16—C15—C1 | 129.36 (14) | ||
C14—C1—C2—C3 | −179.34 (15) | C1—C15—C16—C17 | −169.86 (16) |
C15—C1—C2—C3 | 7.3 (2) | C15—C16—C17—O1 | 164.24 (16) |
C14—C1—C2—C7 | −0.4 (2) | N1—C16—C17—O1 | −12.1 (2) |
C15—C1—C2—C7 | −173.69 (14) | C15—C16—C17—C18 | −11.0 (2) |
C1—C2—C3—C4 | −179.21 (18) | N1—C16—C17—C18 | 172.64 (13) |
C7—C2—C3—C4 | 1.8 (3) | O1—C17—C18—C23 | −54.0 (2) |
C2—C3—C4—C5 | −0.1 (3) | C16—C17—C18—C23 | 121.27 (17) |
C3—C4—C5—C6 | −1.0 (3) | O1—C17—C18—C19 | 125.09 (18) |
C4—C5—C6—C7 | 0.4 (3) | C16—C17—C18—C19 | −59.7 (2) |
C1—C2—C7—C8 | −1.1 (2) | C23—C18—C19—C20 | −1.1 (3) |
C3—C2—C7—C8 | 177.93 (16) | C17—C18—C19—C20 | 179.92 (15) |
C1—C2—C7—C6 | 178.61 (15) | C18—C19—C20—C21 | −1.1 (3) |
C3—C2—C7—C6 | −2.3 (2) | C19—C20—C21—C22 | 2.2 (3) |
C5—C6—C7—C8 | −178.96 (19) | C19—C20—C21—Cl1 | −176.77 (14) |
C5—C6—C7—C2 | 1.3 (3) | C20—C21—C22—C23 | −1.1 (3) |
C2—C7—C8—C9 | 1.3 (3) | Cl1—C21—C22—C23 | 177.95 (15) |
C6—C7—C8—C9 | −178.43 (17) | C21—C22—C23—C18 | −1.2 (3) |
C7—C8—C9—C10 | 178.23 (19) | C19—C18—C23—C22 | 2.2 (3) |
C7—C8—C9—C14 | 0.0 (3) | C17—C18—C23—C22 | −178.67 (16) |
C8—C9—C10—C11 | −177.3 (2) | N2—C25—C26—N1 | 0.8 (2) |
C14—C9—C10—C11 | 0.9 (3) | N3—C25—C26—N1 | −178.49 (16) |
C9—C10—C11—C12 | 1.5 (4) | C25—C26—N1—C24 | −0.45 (18) |
C10—C11—C12—C13 | −1.7 (4) | C25—C26—N1—C16 | −178.48 (14) |
C11—C12—C13—C14 | −0.6 (3) | N2—C24—N1—C26 | 0.0 (2) |
C2—C1—C14—C13 | −174.85 (16) | N2—C24—N1—C16 | 177.96 (15) |
C15—C1—C14—C13 | −1.7 (2) | C15—C16—N1—C26 | 53.9 (2) |
C2—C1—C14—C9 | 1.6 (2) | C17—C16—N1—C26 | −129.70 (16) |
C15—C1—C14—C9 | 174.79 (14) | C15—C16—N1—C24 | −123.73 (19) |
C12—C13—C14—C1 | 179.44 (18) | C17—C16—N1—C24 | 52.7 (2) |
C12—C13—C14—C9 | 3.0 (3) | N1—C24—N2—C25 | 0.4 (2) |
C8—C9—C14—C1 | −1.5 (2) | C26—C25—N2—C24 | −0.8 (2) |
C10—C9—C14—C1 | −179.75 (17) | N3—C25—N2—C24 | 178.53 (16) |
C8—C9—C14—C13 | 175.20 (17) | C26—C25—N3—O3 | 179.18 (19) |
C10—C9—C14—C13 | −3.1 (3) | N2—C25—N3—O3 | 0.0 (3) |
C2—C1—C15—C16 | −126.63 (19) | C26—C25—N3—O2 | −1.4 (3) |
C14—C1—C15—C16 | 60.0 (2) | N2—C25—N3—O2 | 179.44 (19) |
C1—C15—C16—N1 | 6.3 (3) |
Symmetry codes: (i) −x+1, −y+2, −z; (ii) x+1, y+1, z; (iii) −x+1, −y+2, −z+1; (iv) −x, −y+2, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C26H16ClN3O3 |
Mr | 453.87 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 292 |
a, b, c (Å) | 8.0511 (9), 11.0406 (12), 12.9274 (14) |
α, β, γ (°) | 76.065 (2), 85.974 (2), 71.258 (2) |
V (Å3) | 1056.1 (2) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.22 |
Crystal size (mm) | 0.16 × 0.12 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1997) |
Tmin, Tmax | 0.956, 0.979 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6168, 4070, 3354 |
Rint | 0.014 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.044, 0.113, 1.04 |
No. of reflections | 4070 |
No. of parameters | 299 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.56, −0.50 |
Computer programs: SMART (Bruker, 2001), SAINT (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), PLATON (Spek, 2009).
C17···O1i | 2.985 (2) | Cg1···Cg2iii | 3.746 (7) |
Cl1···O3ii | 3.181 (3) | Cg2···Cg2iv | 3.863 (8) |
Symmetry codes: (i) −x+1, −y+2, −z; (ii) x+1, y+1, z; (iii) −x+1, −y+2, −z+1; (iv) −x, −y+2, −z+1. |
Acknowledgements
We thank Southwest University (grant Nos. SWUB2006018, XSGX0602 and SWUF2007023) and the Natural Science Foundation of Chongqing (grant No. 2007BB5369) for financial support.
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.
Chalcones or 1,3-diaryl-2-propen-1-ones are natural or synthetic compounds belonging to the flavonoid family (Corrêa et al., 2001). They exhibit different kinds of biological activities, such as antimicrobial, anticancer, antiviral, ant-malarial, anti-inflammatory activities (Daskiewicz et al., 2005; Vogel et al., 2008; Sivakumar et al., 2009). Hence, chalcones are considered as a class of important therapeutic potentials. The title compound, (I), is part of our effort in order to contribute this research, and we report its crystal structure here.
In (I) (Fig. 1), the dihedral angle between the anthracene and imidazole rings is 64.75 (2)° and the nitroimidazole is slightly twisted away from the 4-chlorophenyl ring with a dihedral angle of 11.55 (2)°. In the crystal, the π-π interactions between the anthracene fragments (Table 1) lead to formation of stacks of the molecules propagated in direction [100]. The short distance between the carbonyl groups [C17···O1(1-x, 2-y, -z) 2.985 (2) Å] (Table 1) reveals an existence of dipole-dipole interactions. The crystal packing also exhibits short intermolecular contacts between the nitro groups and chlorine atoms [Cl···O 3.181 (2) Å] (Table 1).