organic compounds
(2E)-3-(3,4-Dimethoxyphenyl)-1-(4-hydroxyphenyl)prop-2-en-1-one
aDepartment of Chemistry, Keene State College, 229 Main Street, Keene, NH 03435-2001, USA, bDepartment of Chemistry, Howard University, 525 College Street NW, Washington, DC 20059, USA, cDepartment of Chemistry, P.A. College of Engineering, Mangalore, 574 153, India, and dDepartment of Studies in Chemistry, Mangalore University, Mangalagangotri, Mysore 574 199, India
*Correspondence e-mail: jjasinski@keene.edu
In the title compound, C17H16O4, the dihedral angle between the mean planes of the hydroxyphenyl and dimethoxyphenyl rings is 19.34 (7)°. The mean plane of the prop-2-en-1-one group, the active site in this molecule, makes angles of 7.40 (8) and 13.25 (8)°, respectively, with the hydroxyphenyl and dimethoxyphenyl rings. The crystal packing is stabilized by O—H⋯O hydrogen bonds, weak intermolecular C—H⋯O and π–π stacking interactions [centroid–centroid distance = 3.7386 (9) Å].
Related literature
For related chalcone structures, see: Butcher et al. (2006); Cao et al. (2005); Harrison et al. (2007); Jasinski et al. (2010, 2011a,b); Ngaini et al. (2009); Radha Krishna et al. (2005); Sharma et al. (1997); Wu et al. (2005)
Experimental
Crystal data
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Refinement
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Data collection: CrysAlis PRO (Oxford Diffraction, 2007); cell CrysAlis PRO; data reduction: CrysAlis RED (Oxford Diffraction, 2007); 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/S1600536811007781/tk2725sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811007781/tk2725Isup2.hkl
4-Hydroxyacetophenone (1.36 g, 0.01 mol) was mixed with 3,4-dimethoxybenzaldehyde (1.66 g, 0.01 mol) and dissolved in ethanol (40 ml), Fig.1. To this solution, 5 ml of KOH (50%) was added at 278 K. The reaction mixture stirred overnight at room temperature and poured on to crushed ice. The pH of this mixture was adjusted to 3–4 with 2 M HCl aqueous solution. The resulting crude solid was filtered, washed successively with dilute HCl solution and distilled water, and finally recrystallized from ethyl alcohol (95%) to give the pure chalcone. Crystals suitable for X-ray diffraction studies were grown by the slow evaporation of the solution of the compound in ethyl alcohol:DMF (4:1) (M.pt.: 438–442 K). Composition: Found (Calculated) for C17H16O4, C 75.22 (75.28); H: 5.95 (5.92) %.
The hydroxyl hydrogen was located by a Fourier map, fixed at 0.82 Å and refined using the riding model. All of the remaining H atoms were placed in their calculated positions and then refined using the riding model with C—H = 0.93 Å (CH) and 0.96 Å (CH3). Isotropic displacement parameters for these atoms were set to 1.19–1.20 (CH), 1.50 (CH3) or 1.50 (OH) times Ueq of the parent atom.
Data collection: CrysAlis PRO (Oxford Diffraction, 2007); cell
CrysAlis PRO (Oxford Diffraction, 2007); data reduction: CrysAlis RED (Oxford Diffraction, 2007); 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).C17H16O4 | F(000) = 1200 |
Mr = 284.30 | Dx = 1.288 Mg m−3 |
Orthorhombic, Pbca | Cu Kα radiation, λ = 1.54184 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 5957 reflections |
a = 15.1435 (1) Å | θ = 4.8–77.2° |
b = 8.4364 (1) Å | µ = 0.75 mm−1 |
c = 22.9454 (2) Å | T = 295 K |
V = 2931.43 (5) Å3 | Thick needle, pale yellow |
Z = 8 | 0.57 × 0.28 × 0.19 mm |
Oxford Diffraction Gemini R diffractometer | 3022 independent reflections |
Radiation source: fine-focus sealed tube | 2545 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.019 |
Detector resolution: 10.5081 pixels mm-1 | θmax = 77.4°, θmin = 4.8° |
ϕ and ω scans | h = −19→16 |
Absorption correction: multi-scan (CrysAlis RED; Oxford Diffraction, 2007) | k = −10→8 |
Tmin = 0.606, Tmax = 1.000 | l = −29→27 |
9187 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) = 0.132 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0854P)2 + 0.2601P] where P = (Fo2 + 2Fc2)/3 |
3022 reflections | (Δ/σ)max < 0.001 |
193 parameters | Δρmax = 0.18 e Å−3 |
0 restraints | Δρmin = −0.19 e Å−3 |
C17H16O4 | V = 2931.43 (5) Å3 |
Mr = 284.30 | Z = 8 |
Orthorhombic, Pbca | Cu Kα radiation |
a = 15.1435 (1) Å | µ = 0.75 mm−1 |
b = 8.4364 (1) Å | T = 295 K |
c = 22.9454 (2) Å | 0.57 × 0.28 × 0.19 mm |
Oxford Diffraction Gemini R diffractometer | 3022 independent reflections |
Absorption correction: multi-scan (CrysAlis RED; Oxford Diffraction, 2007) | 2545 reflections with I > 2σ(I) |
Tmin = 0.606, Tmax = 1.000 | Rint = 0.019 |
9187 measured reflections |
R[F2 > 2σ(F2)] = 0.044 | 0 restraints |
wR(F2) = 0.132 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.18 e Å−3 |
3022 reflections | Δρmin = −0.19 e Å−3 |
193 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 | ||
O1 | 0.35344 (7) | 0.04833 (15) | 0.56975 (5) | 0.0633 (3) | |
H1A | 0.3054 | 0.0598 | 0.5538 | 0.095* | |
O2 | 0.69247 (6) | 0.40373 (15) | 0.47932 (5) | 0.0632 (3) | |
O3 | 0.52144 (7) | 0.68821 (14) | 0.18477 (4) | 0.0623 (3) | |
O4 | 0.64891 (8) | 0.87474 (16) | 0.15770 (5) | 0.0709 (4) | |
C1 | 0.54831 (8) | 0.30167 (16) | 0.48339 (5) | 0.0446 (3) | |
C2 | 0.56558 (9) | 0.21781 (19) | 0.53484 (6) | 0.0531 (3) | |
H2A | 0.6224 | 0.2190 | 0.5503 | 0.064* | |
C3 | 0.50099 (9) | 0.1343 (2) | 0.56289 (6) | 0.0565 (4) | |
H3A | 0.5142 | 0.0786 | 0.5968 | 0.068* | |
C4 | 0.41531 (9) | 0.13271 (17) | 0.54069 (6) | 0.0488 (3) | |
C5 | 0.39652 (9) | 0.21501 (18) | 0.48989 (6) | 0.0514 (3) | |
H5A | 0.3395 | 0.2144 | 0.4749 | 0.062* | |
C6 | 0.46232 (9) | 0.29769 (17) | 0.46166 (6) | 0.0486 (3) | |
H6A | 0.4491 | 0.3519 | 0.4275 | 0.058* | |
C7 | 0.61991 (8) | 0.39056 (17) | 0.45507 (6) | 0.0467 (3) | |
C8 | 0.60426 (8) | 0.46360 (16) | 0.39746 (5) | 0.0468 (3) | |
H8A | 0.5557 | 0.4317 | 0.3756 | 0.056* | |
C9 | 0.65801 (8) | 0.57388 (16) | 0.37626 (6) | 0.0470 (3) | |
H9A | 0.7045 | 0.6039 | 0.4004 | 0.056* | |
C10 | 0.65336 (8) | 0.65384 (15) | 0.31995 (5) | 0.0432 (3) | |
C11 | 0.58497 (8) | 0.62733 (15) | 0.27941 (5) | 0.0444 (3) | |
H11A | 0.5393 | 0.5580 | 0.2886 | 0.053* | |
C12 | 0.58516 (8) | 0.70317 (16) | 0.22628 (5) | 0.0457 (3) | |
C13 | 0.65482 (9) | 0.80698 (17) | 0.21138 (6) | 0.0481 (3) | |
C14 | 0.72135 (9) | 0.83476 (17) | 0.25115 (6) | 0.0517 (3) | |
H14A | 0.7671 | 0.9040 | 0.2420 | 0.062* | |
C15 | 0.71971 (9) | 0.75892 (18) | 0.30489 (6) | 0.0506 (3) | |
H15A | 0.7645 | 0.7794 | 0.3315 | 0.061* | |
C16 | 0.44645 (10) | 0.5955 (2) | 0.19866 (7) | 0.0639 (4) | |
H16A | 0.4646 | 0.4889 | 0.2071 | 0.096* | |
H16B | 0.4065 | 0.5949 | 0.1662 | 0.096* | |
H16C | 0.4174 | 0.6397 | 0.2321 | 0.096* | |
C17 | 0.71898 (15) | 0.9741 (3) | 0.13898 (8) | 0.0870 (6) | |
H17A | 0.7210 | 1.0672 | 0.1630 | 0.130* | |
H17B | 0.7095 | 1.0044 | 0.0991 | 0.130* | |
H17C | 0.7739 | 0.9179 | 0.1421 | 0.130* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0503 (5) | 0.0816 (8) | 0.0582 (6) | 0.0019 (5) | 0.0053 (4) | 0.0155 (5) |
O2 | 0.0424 (5) | 0.0845 (8) | 0.0628 (6) | −0.0018 (5) | −0.0107 (4) | 0.0177 (6) |
O3 | 0.0555 (6) | 0.0791 (7) | 0.0522 (5) | −0.0210 (5) | −0.0170 (4) | 0.0141 (5) |
O4 | 0.0766 (7) | 0.0823 (8) | 0.0539 (6) | −0.0329 (6) | −0.0121 (5) | 0.0175 (6) |
C1 | 0.0423 (6) | 0.0489 (7) | 0.0426 (6) | 0.0079 (5) | −0.0023 (5) | −0.0020 (5) |
C2 | 0.0424 (6) | 0.0675 (9) | 0.0495 (7) | 0.0072 (6) | −0.0075 (5) | 0.0054 (6) |
C3 | 0.0520 (7) | 0.0708 (9) | 0.0469 (7) | 0.0090 (7) | −0.0031 (5) | 0.0115 (7) |
C4 | 0.0457 (7) | 0.0551 (8) | 0.0455 (6) | 0.0066 (6) | 0.0049 (5) | −0.0012 (6) |
C5 | 0.0405 (6) | 0.0639 (8) | 0.0496 (7) | 0.0051 (6) | −0.0033 (5) | 0.0023 (6) |
C6 | 0.0446 (6) | 0.0585 (8) | 0.0428 (6) | 0.0065 (5) | −0.0040 (5) | 0.0048 (5) |
C7 | 0.0414 (6) | 0.0523 (7) | 0.0464 (6) | 0.0083 (5) | −0.0031 (5) | −0.0011 (5) |
C8 | 0.0423 (6) | 0.0549 (7) | 0.0431 (6) | 0.0039 (5) | −0.0028 (5) | −0.0027 (5) |
C9 | 0.0441 (6) | 0.0493 (7) | 0.0476 (6) | 0.0051 (5) | −0.0080 (5) | −0.0035 (5) |
C10 | 0.0408 (6) | 0.0442 (6) | 0.0447 (6) | 0.0039 (5) | −0.0034 (5) | −0.0034 (5) |
C11 | 0.0387 (6) | 0.0466 (7) | 0.0479 (6) | −0.0022 (5) | −0.0028 (5) | −0.0003 (5) |
C12 | 0.0415 (6) | 0.0504 (7) | 0.0451 (6) | −0.0033 (5) | −0.0053 (5) | −0.0026 (5) |
C13 | 0.0493 (7) | 0.0488 (7) | 0.0463 (6) | −0.0054 (5) | −0.0011 (5) | −0.0003 (5) |
C14 | 0.0462 (7) | 0.0537 (7) | 0.0553 (7) | −0.0111 (6) | −0.0019 (5) | −0.0017 (6) |
C15 | 0.0428 (6) | 0.0558 (8) | 0.0533 (7) | −0.0036 (6) | −0.0105 (5) | −0.0049 (6) |
C16 | 0.0474 (7) | 0.0847 (11) | 0.0596 (8) | −0.0175 (7) | −0.0120 (6) | 0.0011 (8) |
C17 | 0.0952 (14) | 0.0961 (14) | 0.0697 (10) | −0.0435 (12) | −0.0063 (9) | 0.0232 (10) |
O1—C4 | 1.3524 (17) | C8—C9 | 1.328 (2) |
O1—H1A | 0.8200 | C8—H8A | 0.9300 |
O2—C7 | 1.2368 (16) | C9—C10 | 1.4592 (18) |
O3—C12 | 1.3617 (15) | C9—H9A | 0.9300 |
O3—C16 | 1.4153 (17) | C10—C15 | 1.3837 (19) |
O4—C13 | 1.3608 (17) | C10—C11 | 1.4100 (16) |
O4—C17 | 1.419 (2) | C11—C12 | 1.3768 (18) |
C1—C6 | 1.3947 (18) | C11—H11A | 0.9300 |
C1—C2 | 1.4009 (18) | C12—C13 | 1.4131 (18) |
C1—C7 | 1.4698 (19) | C13—C14 | 1.3794 (19) |
C2—C3 | 1.367 (2) | C14—C15 | 1.389 (2) |
C2—H2A | 0.9300 | C14—H14A | 0.9300 |
C3—C4 | 1.3940 (19) | C15—H15A | 0.9300 |
C3—H3A | 0.9300 | C16—H16A | 0.9600 |
C4—C5 | 1.3863 (19) | C16—H16B | 0.9600 |
C5—C6 | 1.378 (2) | C16—H16C | 0.9600 |
C5—H5A | 0.9300 | C17—H17A | 0.9600 |
C6—H6A | 0.9300 | C17—H17B | 0.9600 |
C7—C8 | 1.4775 (17) | C17—H17C | 0.9600 |
C4—O1—H1A | 109.5 | C15—C10—C11 | 118.05 (12) |
C12—O3—C16 | 117.54 (11) | C15—C10—C9 | 118.83 (11) |
C13—O4—C17 | 118.23 (12) | C11—C10—C9 | 123.11 (12) |
C6—C1—C2 | 117.60 (12) | C12—C11—C10 | 120.59 (12) |
C6—C1—C7 | 122.88 (12) | C12—C11—H11A | 119.7 |
C2—C1—C7 | 119.51 (12) | C10—C11—H11A | 119.7 |
C3—C2—C1 | 121.58 (13) | O3—C12—C11 | 125.08 (12) |
C3—C2—H2A | 119.2 | O3—C12—C13 | 114.66 (12) |
C1—C2—H2A | 119.2 | C11—C12—C13 | 120.25 (11) |
C2—C3—C4 | 119.93 (13) | O4—C13—C14 | 125.14 (12) |
C2—C3—H3A | 120.0 | O4—C13—C12 | 115.48 (12) |
C4—C3—H3A | 120.0 | C14—C13—C12 | 119.37 (13) |
O1—C4—C5 | 122.41 (12) | C13—C14—C15 | 119.73 (13) |
O1—C4—C3 | 118.02 (12) | C13—C14—H14A | 120.1 |
C5—C4—C3 | 119.57 (13) | C15—C14—H14A | 120.1 |
C6—C5—C4 | 120.02 (12) | C10—C15—C14 | 121.98 (12) |
C6—C5—H5A | 120.0 | C10—C15—H15A | 119.0 |
C4—C5—H5A | 120.0 | C14—C15—H15A | 119.0 |
C5—C6—C1 | 121.28 (12) | O3—C16—H16A | 109.5 |
C5—C6—H6A | 119.4 | O3—C16—H16B | 109.5 |
C1—C6—H6A | 119.4 | H16A—C16—H16B | 109.5 |
O2—C7—C1 | 120.15 (12) | O3—C16—H16C | 109.5 |
O2—C7—C8 | 120.51 (12) | H16A—C16—H16C | 109.5 |
C1—C7—C8 | 119.34 (11) | H16B—C16—H16C | 109.5 |
C9—C8—C7 | 121.42 (12) | O4—C17—H17A | 109.5 |
C9—C8—H8A | 119.3 | O4—C17—H17B | 109.5 |
C7—C8—H8A | 119.3 | H17A—C17—H17B | 109.5 |
C8—C9—C10 | 128.19 (12) | O4—C17—H17C | 109.5 |
C8—C9—H9A | 115.9 | H17A—C17—H17C | 109.5 |
C10—C9—H9A | 115.9 | H17B—C17—H17C | 109.5 |
C6—C1—C2—C3 | 0.2 (2) | C8—C9—C10—C11 | 2.9 (2) |
C7—C1—C2—C3 | 179.60 (14) | C15—C10—C11—C12 | 0.59 (19) |
C1—C2—C3—C4 | −0.7 (2) | C9—C10—C11—C12 | −178.34 (12) |
C2—C3—C4—O1 | 179.88 (14) | C16—O3—C12—C11 | 4.2 (2) |
C2—C3—C4—C5 | 0.6 (2) | C16—O3—C12—C13 | −175.33 (14) |
O1—C4—C5—C6 | −179.27 (13) | C10—C11—C12—O3 | −178.55 (13) |
C3—C4—C5—C6 | 0.0 (2) | C10—C11—C12—C13 | 1.0 (2) |
C4—C5—C6—C1 | −0.5 (2) | C17—O4—C13—C14 | 4.3 (3) |
C2—C1—C6—C5 | 0.3 (2) | C17—O4—C13—C12 | −176.96 (16) |
C7—C1—C6—C5 | −178.98 (13) | O3—C12—C13—O4 | −0.94 (19) |
C6—C1—C7—O2 | 172.43 (13) | C11—C12—C13—O4 | 179.51 (13) |
C2—C1—C7—O2 | −6.9 (2) | O3—C12—C13—C14 | 177.85 (13) |
C6—C1—C7—C8 | −7.6 (2) | C11—C12—C13—C14 | −1.7 (2) |
C2—C1—C7—C8 | 173.06 (12) | O4—C13—C14—C15 | 179.55 (14) |
O2—C7—C8—C9 | −15.9 (2) | C12—C13—C14—C15 | 0.9 (2) |
C1—C7—C8—C9 | 164.20 (13) | C11—C10—C15—C14 | −1.4 (2) |
C7—C8—C9—C10 | 178.09 (12) | C9—C10—C15—C14 | 177.55 (13) |
C8—C9—C10—C15 | −176.03 (14) | C13—C14—C15—C10 | 0.7 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1A···O2i | 0.82 | 1.90 | 2.7154 (15) | 176 |
C6—H6A···O4ii | 0.93 | 2.46 | 3.2803 (16) | 147 |
Symmetry codes: (i) x−1/2, −y+1/2, −z+1; (ii) −x+1, y−1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C17H16O4 |
Mr | 284.30 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 295 |
a, b, c (Å) | 15.1435 (1), 8.4364 (1), 22.9454 (2) |
V (Å3) | 2931.43 (5) |
Z | 8 |
Radiation type | Cu Kα |
µ (mm−1) | 0.75 |
Crystal size (mm) | 0.57 × 0.28 × 0.19 |
Data collection | |
Diffractometer | Oxford Diffraction Gemini R diffractometer |
Absorption correction | Multi-scan (CrysAlis RED; Oxford Diffraction, 2007) |
Tmin, Tmax | 0.606, 1.000 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 9187, 3022, 2545 |
Rint | 0.019 |
(sin θ/λ)max (Å−1) | 0.633 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.044, 0.132, 1.05 |
No. of reflections | 3022 |
No. of parameters | 193 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.18, −0.19 |
Computer programs: CrysAlis PRO (Oxford Diffraction, 2007), CrysAlis RED (Oxford Diffraction, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1A···O2i | 0.82 | 1.90 | 2.7154 (15) | 176 |
C6—H6A···O4ii | 0.93 | 2.46 | 3.2803 (16) | 147 |
Symmetry codes: (i) x−1/2, −y+1/2, −z+1; (ii) −x+1, y−1/2, −z+1/2. |
CgI···CgJ | Cg···Cg (Å) | CgI Perp (Å) | Cgj Perp (Å) | Slippage (Å) |
Cg1···Cg1i | 3.7386 (9) | -3.3959 (6) | -3.3958 (6) | 1.56 (4) |
Acknowledgements
BKS thanks the BRNS, DAE, Government of India (grant No. 2008/34/05-BRNS/457). VMK thanks P. A. College of Engineering for the research facilities. RJB acknowledges the NSF MRI program (grant No. CHE-0619278) for funds to purchase the X-ray diffractometer.
References
Butcher, R. J., Yathirajan, H. S., Anilkumar, H. G., Sarojini, B. K. & Narayana, B. (2006). Acta Cryst. E62, o1633–o1635. Web of Science CSD CrossRef IUCr Journals Google Scholar
Cao, D.-X., Li, G.-Z., Xue, G., Yu, W.-T. & Liu, Z.-Q. (2005). Acta Cryst. E61, o977–o979. Web of Science CrossRef CAS IUCr Journals Google Scholar
Harrison, W. T. A., Kumari, V., Ravindra, H. J. & Dharmaprakash, S. M. (2007). Acta Cryst. E63, o2928. Web of Science CSD CrossRef IUCr Journals Google Scholar
Jasinski, J. P., Butcher, R. J., Chidan Kumar, C. S., Yathirajan, H. S. & Mayekar, A. N. (2010). Acta Cryst. E66, o2936–o2937. Web of Science CSD CrossRef IUCr Journals Google Scholar
Jasinski, J. P., Butcher, R. J., Samshuddin, S., Narayana, B. & Yathirajan, H. S. (2011b). Acta Cryst. E67, o352–o353. Web of Science CSD CrossRef IUCr Journals Google Scholar
Jasinski, J. P., Butcher, R. J., Siddaraju, B. P., Narayana, B. & Yathirajan, H. S. (2011a). Acta Cryst. E67, o313–o314. Web of Science CSD CrossRef IUCr Journals Google Scholar
Ngaini, Z., Fadzillah, S. M. H., Hussain, H., Razak, I. A. & Fun, H.-K. (2009). Acta Cryst. E65, o1301–o1302. Web of Science CSD CrossRef IUCr Journals Google Scholar
Oxford Diffraction (2007). CrysAlis PRO and CrysAlis RED. Oxford Diffraction Ltd, Abingdon, England. Google Scholar
Radha Krishna, J., Jagadeesh Kumar, N., Krishnaiah, M., Venkata Rao, C., Koteswara Rao, Y. & Puranik, V. G. (2005). Acta Cryst. E61, o1323–o1325. Web of Science CSD CrossRef IUCr Journals Google Scholar
Sharma, N. K., Kumar, R., Parmar, V. S. & Errington, W. (1997). Acta Cryst. C53, 1438–1440. CSD CrossRef CAS Web of Science IUCr Journals Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Wu, H., Xu, Z. & Liang, Y.-M. (2005). Acta Cryst. E61, o1434–o1435. Web of Science CSD CrossRef IUCr Journals Google Scholar
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In continuation to our studies on crystal structures of chalcones (Jasinski et al., 2010, 2011a, 2011b), we report here the synthesis, Fig. 1, and crystal structure of a new chalcone, (I), Fig. 2. The dihedral angle between the mean planes of the hydroxyphenyl and dimethoxyphenyl rings is 19.34 (7)° (Fig. 2). The mean plane of the prop-2-en-1-one group, the active site in this molecule, makes angles of 7.40 (8) ° and 13.25 (8) °, respectively, with the hydroxyphenyl and dimethoxyphenyl rings. Bond lengths and angles are normal and correspond to those observed in related compounds (Butcher et al., 2006; Cao et al., 2005; Harrison et al., 2007; Jasinski et al., 2010, 2011a, 2011b; Ngaini et al., 2009; Radha Krishna et al., 2005; Sharma et al., 1997; Wu et al., 2005). Crystal packing is stabilized by O—H···O hydrogen bonds, weak C—H···O contacts (Table 2) and π—π stacking interactions (Table 3); see Fig. 3.