organic compounds
(E)-3-(3,4-Difluorophenyl)-1-(3,4-dimethoxyphenyl)prop-2-en-1-one
aSchool of Pharmaceutical Sciences, Wenzhou Medical College, Wenzhou 325035, People's Republic of China
*Correspondence e-mail: lzgcnu@163.com
In the title compound, C17H14F2O3, the dihedral angle between the benzene rings is 20.56 (8)° and the H atoms at the central propenone group are trans configured. One of the F atoms is disordered over two positions (occupancy ratio 0.57:0.43) and was refined using a split model. In the crystal, the molecules are linked into centrosymmetrical dimers and are further connected into a three-dimensional network via weak C—H⋯O interactions.
Related literature
For related structures, see: Peng et al.(2010); Wu et al. (2010, 2011, 2012b). For background to and applications of see: Boumendjel et al. (2008); Kumar et al. (2011); Wu et al. (2011, 2012a); Zhang et al. (2011).
Experimental
Crystal data
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Data collection: SMART (Bruker, 2002); cell SAINT (Bruker, 2002); 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/S1600536813013767/nc2310sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813013767/nc2310Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813013767/nc2310Isup3.cml
1-(3,4-difluorophenyl) ethanone (0.01 mol) and 2,3-dimethoxybenzaldehyde (0.01 mol) were dissolved in methanol (50 ml). Sodium hydroxide (5 ml, 20%) was added drop wised to the solution, which was stirred at ambient temperature. The content of the flask were poured into ice-cold water, and the resulting crude solid was collected by filtration. The compound was purified by flash column and single crystals were obtained by slow evaporation from an ethanol/ dichloromethane solution (1:2, v/v) at 293 K.
The hydrogen atoms were positioned with idalized geometry and refined isotropic with Uiso(H) = 1.2 Ueq(C) (1.5 for methyl H atoms) using a riding model. One of the fluorine atoms was disordered over two positions and was refined using a split model with sof = 0.55 and 0.45.
Data collection: SMART (Bruker, 2002); cell
SAINT (Bruker, 2002); data reduction: SAINT (Sheldrick, 2008); 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. Crystal structure of the title compound with labeling and displacement ellipsoids drawn at the 30% probability level. Disordering is shown as full and open bonds. |
C17H14F2O3 | F(000) = 632 |
Mr = 304.28 | Dx = 1.377 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
a = 8.7444 (9) Å | Cell parameters from 2015 reflections |
b = 8.4832 (9) Å | θ = 5.0–54.2° |
c = 19.829 (2) Å | µ = 0.11 mm−1 |
β = 94.053 (2)° | T = 293 K |
V = 1467.2 (3) Å3 | Prismatic, colorless |
Z = 4 | 0.21 × 0.15 × 0.11 mm |
Bruker SMART CCD area-detector diffractometer | 2876 independent reflections |
Radiation source: fine-focus sealed tube | 2121 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.028 |
phi and ω scans | θmax = 26.0°, θmin = 2.6° |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | h = −10→10 |
Tmin = 0.977, Tmax = 0.988 | k = −10→10 |
8592 measured reflections | l = −24→20 |
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)] = 0.043 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.129 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0703P)2 + 0.091P] where P = (Fo2 + 2Fc2)/3 |
2876 reflections | (Δ/σ)max < 0.001 |
201 parameters | Δρmax = 0.19 e Å−3 |
0 restraints | Δρmin = −0.15 e Å−3 |
C17H14F2O3 | V = 1467.2 (3) Å3 |
Mr = 304.28 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 8.7444 (9) Å | µ = 0.11 mm−1 |
b = 8.4832 (9) Å | T = 293 K |
c = 19.829 (2) Å | 0.21 × 0.15 × 0.11 mm |
β = 94.053 (2)° |
Bruker SMART CCD area-detector diffractometer | 2876 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2002) | 2121 reflections with I > 2σ(I) |
Tmin = 0.977, Tmax = 0.988 | Rint = 0.028 |
8592 measured reflections |
R[F2 > 2σ(F2)] = 0.043 | 0 restraints |
wR(F2) = 0.129 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.19 e Å−3 |
2876 reflections | Δρmin = −0.15 e Å−3 |
201 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 | Occ. (<1) | |
F1 | −0.0102 (2) | −0.0304 (3) | 0.14625 (12) | 0.0862 (7) | 0.57 |
F1' | −0.1205 (3) | 0.2840 (4) | −0.03983 (14) | 0.0844 (9) | 0.43 |
F2 | −0.21164 (11) | 0.07757 (14) | 0.05038 (6) | 0.0743 (4) | |
O1 | 0.67825 (13) | 0.44604 (16) | 0.07214 (6) | 0.0643 (4) | |
O2 | 1.05520 (12) | 0.37085 (16) | 0.35153 (5) | 0.0569 (3) | |
O3 | 1.13490 (13) | 0.49922 (18) | 0.24315 (6) | 0.0711 (4) | |
C1 | 0.12377 (18) | 0.3023 (2) | 0.01589 (8) | 0.0512 (4) | |
H1 | 0.1536 | 0.3772 | −0.0148 | 0.061* | |
C2 | −0.02383 (9) | 0.24437 (11) | 0.01024 (4) | 0.0546 (4) | |
H2 | −0.0955 | 0.2809 | −0.0253 | 0.065* | 0.57 |
C3 | −0.06758 (9) | 0.13470 (11) | 0.05544 (4) | 0.0520 (4) | |
C4 | 0.03440 (9) | 0.08176 (11) | 0.10642 (4) | 0.0557 (4) | |
H4' | 0.0024 | 0.0047 | 0.1379 | 0.067* | 0.43 |
C5 | 0.18143 (9) | 0.13853 (11) | 0.11244 (4) | 0.0520 (4) | |
H5 | 0.2498 | 0.1023 | 0.1471 | 0.062* | |
C6 | 0.22850 (16) | 0.24987 (19) | 0.06709 (8) | 0.0431 (4) | |
C7 | 0.38359 (17) | 0.3175 (2) | 0.07232 (8) | 0.0457 (4) | |
H7 | 0.4064 | 0.3889 | 0.0389 | 0.055* | |
C8 | 0.49391 (17) | 0.2877 (2) | 0.11943 (8) | 0.0505 (4) | |
H8 | 0.4769 | 0.2139 | 0.1528 | 0.061* | |
C9 | 0.64366 (17) | 0.3684 (2) | 0.12068 (8) | 0.0474 (4) | |
C10 | 0.74973 (16) | 0.35850 (19) | 0.18235 (8) | 0.0441 (4) | |
C11 | 0.71003 (19) | 0.2904 (2) | 0.24136 (9) | 0.0588 (5) | |
H11 | 0.6145 | 0.2429 | 0.2426 | 0.071* | |
C12 | 0.80881 (19) | 0.2909 (2) | 0.29899 (9) | 0.0587 (5) | |
H12 | 0.7792 | 0.2439 | 0.3384 | 0.070* | |
C13 | 0.95050 (17) | 0.36056 (19) | 0.29820 (8) | 0.0459 (4) | |
C14 | 0.99356 (16) | 0.42987 (19) | 0.23785 (8) | 0.0458 (4) | |
C15 | 0.89489 (17) | 0.42856 (18) | 0.18126 (8) | 0.0449 (4) | |
H15 | 0.9242 | 0.4746 | 0.1416 | 0.054* | |
C16 | 1.0133 (2) | 0.3151 (3) | 0.41527 (9) | 0.0700 (6) | |
H16A | 0.9196 | 0.3648 | 0.4263 | 0.105* | |
H16B | 1.0931 | 0.3399 | 0.4494 | 0.105* | |
H16C | 0.9990 | 0.2030 | 0.4132 | 0.105* | |
C17 | 1.1804 (2) | 0.5882 (3) | 0.18825 (10) | 0.0762 (6) | |
H17A | 1.1838 | 0.5214 | 0.1493 | 0.114* | |
H17B | 1.2802 | 0.6320 | 0.1993 | 0.114* | |
H17C | 1.1083 | 0.6719 | 0.1786 | 0.114* |
U11 | U22 | U33 | U12 | U13 | U23 | |
F1 | 0.0593 (11) | 0.0901 (16) | 0.1083 (16) | −0.0182 (10) | 0.0008 (10) | 0.0475 (13) |
F1' | 0.0602 (14) | 0.111 (2) | 0.0770 (17) | −0.0076 (14) | −0.0306 (13) | 0.0194 (16) |
F2 | 0.0443 (5) | 0.0795 (8) | 0.0971 (9) | −0.0160 (5) | −0.0097 (5) | 0.0008 (6) |
O1 | 0.0498 (7) | 0.0841 (10) | 0.0580 (7) | −0.0110 (6) | −0.0045 (6) | 0.0218 (7) |
O2 | 0.0488 (6) | 0.0697 (8) | 0.0502 (7) | −0.0076 (6) | −0.0095 (5) | −0.0012 (6) |
O3 | 0.0497 (7) | 0.1028 (11) | 0.0602 (8) | −0.0332 (7) | −0.0014 (6) | 0.0012 (7) |
C1 | 0.0492 (9) | 0.0576 (11) | 0.0454 (9) | −0.0017 (8) | −0.0057 (7) | 0.0055 (8) |
C2 | 0.0453 (9) | 0.0650 (12) | 0.0510 (10) | 0.0007 (8) | −0.0140 (8) | 0.0014 (8) |
C3 | 0.0369 (8) | 0.0538 (10) | 0.0644 (10) | −0.0046 (7) | −0.0044 (7) | −0.0089 (8) |
C4 | 0.0490 (9) | 0.0506 (11) | 0.0668 (11) | −0.0037 (8) | −0.0002 (8) | 0.0092 (8) |
C5 | 0.0431 (9) | 0.0564 (11) | 0.0550 (10) | 0.0024 (8) | −0.0076 (7) | 0.0088 (8) |
C6 | 0.0403 (8) | 0.0445 (9) | 0.0436 (8) | 0.0022 (7) | −0.0032 (6) | −0.0026 (7) |
C7 | 0.0432 (8) | 0.0498 (10) | 0.0438 (9) | −0.0001 (7) | 0.0007 (7) | −0.0001 (7) |
C8 | 0.0420 (8) | 0.0550 (10) | 0.0534 (10) | −0.0056 (7) | −0.0052 (7) | 0.0080 (8) |
C9 | 0.0404 (8) | 0.0498 (10) | 0.0514 (9) | −0.0002 (7) | −0.0006 (7) | 0.0047 (8) |
C10 | 0.0381 (8) | 0.0437 (9) | 0.0498 (9) | −0.0031 (7) | −0.0014 (7) | 0.0007 (7) |
C11 | 0.0442 (9) | 0.0694 (12) | 0.0616 (11) | −0.0195 (8) | −0.0055 (8) | 0.0140 (9) |
C12 | 0.0544 (10) | 0.0688 (12) | 0.0515 (10) | −0.0157 (9) | −0.0053 (8) | 0.0157 (8) |
C13 | 0.0422 (8) | 0.0449 (9) | 0.0496 (9) | −0.0010 (7) | −0.0050 (7) | −0.0035 (7) |
C14 | 0.0364 (8) | 0.0472 (10) | 0.0533 (9) | −0.0065 (7) | 0.0005 (7) | −0.0070 (7) |
C15 | 0.0430 (8) | 0.0454 (9) | 0.0465 (9) | −0.0033 (7) | 0.0041 (7) | −0.0017 (7) |
C16 | 0.0654 (11) | 0.0901 (15) | 0.0523 (11) | −0.0033 (10) | −0.0120 (9) | 0.0085 (10) |
C17 | 0.0639 (12) | 0.0933 (16) | 0.0735 (13) | −0.0337 (11) | 0.0201 (10) | −0.0104 (11) |
F1—C4 | 1.313 (2) | C7—H7 | 0.9300 |
F1'—C2 | 1.302 (2) | C8—C9 | 1.476 (2) |
F2—C3 | 1.3468 (12) | C8—H8 | 0.9300 |
O1—C9 | 1.2220 (19) | C9—C10 | 1.484 (2) |
O2—C13 | 1.3516 (17) | C10—C11 | 1.371 (2) |
O2—C16 | 1.421 (2) | C10—C15 | 1.403 (2) |
O3—C14 | 1.3662 (18) | C11—C12 | 1.383 (2) |
O3—C17 | 1.405 (2) | C11—H11 | 0.9300 |
C1—C2 | 1.3784 (18) | C12—C13 | 1.374 (2) |
C1—C6 | 1.391 (2) | C12—H12 | 0.9300 |
C1—H1 | 0.9300 | C13—C14 | 1.408 (2) |
C2—C3 | 1.3650 | C14—C15 | 1.366 (2) |
C2—H2 | 0.9600 | C15—H15 | 0.9300 |
C3—C4 | 1.3753 | C16—H16A | 0.9600 |
C4—C5 | 1.3703 | C16—H16B | 0.9600 |
C4—H4' | 0.9600 | C16—H16C | 0.9600 |
C5—C6 | 1.3866 (18) | C17—H17A | 0.9600 |
C5—H5 | 0.9300 | C17—H17B | 0.9600 |
C6—C7 | 1.469 (2) | C17—H17C | 0.9600 |
C7—C8 | 1.319 (2) | ||
C13—O2—C16 | 118.12 (13) | C8—C9—C10 | 119.32 (14) |
C14—O3—C17 | 118.42 (14) | C11—C10—C15 | 118.39 (14) |
C2—C1—C6 | 120.61 (15) | C11—C10—C9 | 123.07 (14) |
C2—C1—H1 | 119.7 | C15—C10—C9 | 118.47 (14) |
C6—C1—H1 | 119.7 | C10—C11—C12 | 121.53 (15) |
F1'—C2—C3 | 118.67 (13) | C10—C11—H11 | 119.2 |
F1'—C2—C1 | 121.57 (16) | C12—C11—H11 | 119.2 |
C3—C2—C1 | 119.62 (8) | C13—C12—C11 | 120.20 (16) |
C3—C2—H2 | 120.2 | C13—C12—H12 | 119.9 |
C1—C2—H2 | 120.2 | C11—C12—H12 | 119.9 |
F2—C3—C2 | 120.03 (6) | O2—C13—C12 | 125.48 (15) |
F2—C3—C4 | 119.45 (6) | O2—C13—C14 | 115.52 (13) |
C2—C3—C4 | 120.5 | C12—C13—C14 | 118.99 (14) |
F1—C4—C5 | 121.27 (9) | O3—C14—C15 | 125.60 (15) |
F1—C4—C3 | 118.29 (9) | O3—C14—C13 | 114.15 (13) |
C5—C4—C3 | 120.3 | C15—C14—C13 | 120.22 (13) |
C5—C4—H4' | 119.8 | C14—C15—C10 | 120.68 (15) |
C3—C4—H4' | 119.8 | C14—C15—H15 | 119.7 |
C4—C5—C6 | 120.17 (6) | C10—C15—H15 | 119.7 |
C4—C5—H5 | 119.9 | O2—C16—H16A | 109.5 |
C6—C5—H5 | 119.9 | O2—C16—H16B | 109.5 |
C5—C6—C1 | 118.75 (13) | H16A—C16—H16B | 109.5 |
C5—C6—C7 | 122.34 (12) | O2—C16—H16C | 109.5 |
C1—C6—C7 | 118.89 (14) | H16A—C16—H16C | 109.5 |
C8—C7—C6 | 126.89 (15) | H16B—C16—H16C | 109.5 |
C8—C7—H7 | 116.6 | O3—C17—H17A | 109.5 |
C6—C7—H7 | 116.6 | O3—C17—H17B | 109.5 |
C7—C8—C9 | 121.78 (15) | H17A—C17—H17B | 109.5 |
C7—C8—H8 | 119.1 | O3—C17—H17C | 109.5 |
C9—C8—H8 | 119.1 | H17A—C17—H17C | 109.5 |
O1—C9—C8 | 120.35 (14) | H17B—C17—H17C | 109.5 |
O1—C9—C10 | 120.29 (14) | ||
C6—C1—C2—F1' | −175.4 (2) | O1—C9—C10—C11 | 171.47 (18) |
C6—C1—C2—C3 | 0.14 (19) | C8—C9—C10—C11 | −6.5 (3) |
F1'—C2—C3—F2 | −4.45 (17) | O1—C9—C10—C15 | −5.4 (2) |
C1—C2—C3—F2 | 179.90 (13) | C8—C9—C10—C15 | 176.53 (15) |
F1'—C2—C3—C4 | 175.63 (17) | C15—C10—C11—C12 | 0.5 (3) |
C1—C2—C3—C4 | −0.03 (9) | C9—C10—C11—C12 | −176.42 (17) |
F2—C3—C4—F1 | 3.98 (15) | C10—C11—C12—C13 | 0.0 (3) |
C2—C3—C4—F1 | −176.10 (14) | C16—O2—C13—C12 | −4.5 (3) |
F2—C3—C4—C5 | −179.96 (7) | C16—O2—C13—C14 | 174.74 (16) |
C2—C3—C4—C5 | 0.0 | C11—C12—C13—O2 | 178.70 (16) |
F1—C4—C5—C6 | 175.92 (18) | C11—C12—C13—C14 | −0.5 (3) |
C3—C4—C5—C6 | −0.02 (8) | C17—O3—C14—C15 | 5.4 (3) |
C4—C5—C6—C1 | 0.13 (17) | C17—O3—C14—C13 | −172.30 (16) |
C4—C5—C6—C7 | 178.41 (10) | O2—C13—C14—O3 | −0.9 (2) |
C2—C1—C6—C5 | −0.2 (2) | C12—C13—C14—O3 | 178.39 (16) |
C2—C1—C6—C7 | −178.53 (13) | O2—C13—C14—C15 | −178.80 (14) |
C5—C6—C7—C8 | −2.0 (3) | C12—C13—C14—C15 | 0.5 (2) |
C1—C6—C7—C8 | 176.24 (16) | O3—C14—C15—C10 | −177.60 (16) |
C6—C7—C8—C9 | −177.52 (15) | C13—C14—C15—C10 | 0.0 (2) |
C7—C8—C9—O1 | −11.8 (3) | C11—C10—C15—C14 | −0.5 (2) |
C7—C8—C9—C10 | 166.18 (16) | C9—C10—C15—C14 | 176.55 (15) |
D—H···A | D—H | H···A | D···A | D—H···A |
C1—H1···O1i | 0.93 | 2.44 | 3.321 (2) | 159 |
C5—H5···O2ii | 0.93 | 2.60 | 3.2769 (15) | 130 |
C5—H5···O3ii | 0.93 | 2.49 | 3.3950 (15) | 164 |
Symmetry codes: (i) −x+1, −y+1, −z; (ii) −x+3/2, y−1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C17H14F2O3 |
Mr | 304.28 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 293 |
a, b, c (Å) | 8.7444 (9), 8.4832 (9), 19.829 (2) |
β (°) | 94.053 (2) |
V (Å3) | 1467.2 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.11 |
Crystal size (mm) | 0.21 × 0.15 × 0.11 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2002) |
Tmin, Tmax | 0.977, 0.988 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 8592, 2876, 2121 |
Rint | 0.028 |
(sin θ/λ)max (Å−1) | 0.617 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.043, 0.129, 1.04 |
No. of reflections | 2876 |
No. of parameters | 201 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.19, −0.15 |
Computer programs: SMART (Bruker, 2002), SAINT (Bruker, 2002), SAINT (Sheldrick, 2008), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
C1—H1···O1i | 0.93 | 2.44 | 3.321 (2) | 159 |
C5—H5···O2ii | 0.93 | 2.60 | 3.2769 (15) | 130 |
C5—H5···O3ii | 0.93 | 2.49 | 3.3950 (15) | 164 |
Symmetry codes: (i) −x+1, −y+1, −z; (ii) −x+3/2, y−1/2, −z+1/2. |
Acknowledgements
This work was supported by Xinmiao Talent Project of Zhejiang Province (ZHP). The X-ray crystallographic facility at the Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, is gratefully acknowledged.
References
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The title compound is a biologically active derivative of chalcone. Chalcones constitute an important group of natural products and some of them possess a wide range of biological activities including anti-inflammatory and anti-tumor (Boumendjel et al., 2008; Kumar et al., 2011; Zhang et al., 2011). As part of our ongoing studies on chalcones (Wu et al., 2012a,b; 2011), the title compound was synthesized and its crystal structure is reported here.
In the crystal structure, the dihedral angle between the mean planes of the difluorophenyl and the dimethoxyphenyl rings amount to 20.56 (8)°. The H atoms of the central propenone group are trans configurated. The two methoxy groups attached to C13 and C14 are almost coplanar with the benzene ring.