Abstract
In the title compound, C18H17ClO, the dihedral angle between the benzene rings is 53.5 (1)°. The mean plane of the prop-2-en-1-one group is twisted by 24.5 (8) and 33.5 (3)° from the chloro- and propanyl-substituted rings, respectively.
Keywords: crystal structure
Related literature
For the non-linear optical properties of the chalcones, see: Sarojini et al. (2006 ▶); Poornesh et al. (2009 ▶) and for their biological activity, see: Nielsen et al. (1998 ▶); Mai et al. (2014 ▶); Insuasty et al. (2013 ▶). For related structures, see: Jasinski et al. (2009 ▶, 2012 ▶); Butcher et al. (2007 ▶); Harrison et al. (2006 ▶). For standard bond lengths, see: Allen et al. (1987 ▶).
Experimental
Crystal data
C18H17ClO
M r = 284.76
Monoclinic,
a = 8.8547 (5) Å
b = 5.8455 (3) Å
c = 28.8034 (17) Å
β = 97.396 (6)°
V = 1478.46 (14) Å3
Z = 4
Cu Kα radiation
μ = 2.21 mm−1
T = 173 K
0.41 × 0.32 × 0.14 mm
Data collection
Agilent Eos Gemini diffractometer
Absorption correction: multi-scan CrysAlis PRO and CrysAlis RED (Agilent, 2012 ▶) T min = 0.370, T max = 1.000
8687 measured reflections
2868 independent reflections
2269 reflections with I > 2σ(I)
R int = 0.023
Refinement
R[F 2 > 2σ(F 2)] = 0.093
wR(F 2) = 0.286
S = 1.04
2868 reflections
183 parameters
H-atom parameters constrained
Δρmax = 0.87 e Å−3
Δρmin = −0.44 e Å−3
Data collection: CrysAlis PRO (Agilent, 2012 ▶); cell refinement: CrysAlis PRO; data reduction: CrysAlis RED (Agilent, 2012 ▶); program(s) used to solve structure: SUPERFLIP (Palatinus et al., 2012 ▶); program(s) used to refine structure: SHELXL2012 (Sheldrick, 2008) ▶; molecular graphics: OLEX2 (Dolomanov et al., 2009 ▶); software used to prepare material for publication: OLEX2.
Supplementary Material
Crystal structure: contains datablock(s) I. DOI: 10.1107/S1600536814015281/zs2302sup1.cif
Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536814015281/zs2302Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536814015281/zs2302Isup3.cml
CCDC reference: 1011011
Additional supporting information: crystallographic information; 3D view; checkCIF report
Acknowledgments
BN thanks the UGC for financial assistance through a BSR one-time grant for the purchase of chemicals. VVS thanks the DST for financial assistance through a PURSE grant. JPJ acknowledges the NSF–MRI program (grant No. CHE-1039027) for funds to purchase the X-ray diffractometer.
supplementary crystallographic information
S1. Comment
Chalcones are an important class of natural compounds and have been widely applied as synthons in synthetic organic chemistry. The nonlinear optical properties of the different chalcone derivatives have been reported (Sarojini et al., 2006; Poornesh et al., 2009). These α,β-unsaturated ketones also possess a wide variety of biological activities, including anti-leishmanial (Nielsen et al., 1998), anticancer (Mai et al., 2014) and antitumor activity (Insuasty et al., 2013). The crystal structures of some chalcone derivatives viz., a second polymorph of (2E)-1-(4-fluorophenyl)-3-(3, 4, 5-trimethoxyphenyl)prop-2-en- 1-one, (2E)-1-(3,4-dichlorophenyl)-3-(2-hydroxyphenyl)prop-2-en- 1-one (Jasinski et al., 2009, 2012), (2E)-1-(2,4-dichlorophenyl)-3-[4-(methylsulfanyl)phenyl] prop-2-en-1-one (Butcher et al., 2007) and 2-bromo-1-chlorophenyl-3-(4-methoxyphenyl) prop-2-en-1-one (Harrison et al., 2006) have been reported. In view of the importance of chalcone derivatives, we report herein the crystal structure of the title compound, C18H17ClO.
In the title compound, the dihedral angle between the mean planes of the phenyl rings is 53.5 (1)°. The mean plane of the prop-2-en-1-one group (C1/C2/O1/C8) is twisted away from the two phenyl rings by 24.5 (8)° (C2–C7) and 33.5 (3)° (C10–C15) (Fig. 1). Bond lengths are in normal ranges (Allen et al., 1987). No classical hyrogen bonds are observed.
S2. Experimental
To a mixture of cuminaldehyde (1.5 mL, 0.01 mol) and 4-chloroacetophenone (1.3 mL, 0.01 mol) in ethanol (50 mL), 15 mL of 10 % sodium hydroxide solution was added and stirred at 273–278 K for 3 h (Fig. 2). The precipitate formed was collected by filtration. Single crystals were grown from ethanol by slow the evaporation method (m.p.: 343–345 K).
S3. Refinement
All of the H atoms were placed in their calculated positions and then refined using the riding model with atom—H bond lengths of 0.95– 1.00 Å or 0.98 Å (CH3). Isotropic displacement parameters for these atoms were set to 1.2 (CH) or 1.5 (CH3) times Ueq of the parent atom. The Me group was refined as an ideally rotating group. No twinning has been observed.
Figures
Fig. 1.

ORTEP drawing of C18H17ClO, showing the atom labeling scheme, with 30% probability displacement ellipsoids.
Fig. 2.

Synthesis of C18H17ClO.
Crystal data
| C18H17ClO | Dx = 1.279 Mg m−3 |
| Mr = 284.76 | Melting point = 343–345 K |
| Monoclinic, P21/c | Cu Kα radiation, λ = 1.54184 Å |
| a = 8.8547 (5) Å | Cell parameters from 2529 reflections |
| b = 5.8455 (3) Å | θ = 4.6–72.0° |
| c = 28.8034 (17) Å | µ = 2.21 mm−1 |
| β = 97.396 (6)° | T = 173 K |
| V = 1478.46 (14) Å3 | Prism, colourless |
| Z = 4 | 0.41 × 0.32 × 0.14 mm |
| F(000) = 600 |
Data collection
| Agilent Eos Gemini diffractometer | 2868 independent reflections |
| Radiation source: Enhance (Cu) X-ray Source | 2269 reflections with I > 2σ(I) |
| Graphite monochromator | Rint = 0.023 |
| Detector resolution: 16.0416 pixels mm-1 | θmax = 72.1°, θmin = 5.0° |
| ω scans | h = −10→10 |
| Absorption correction: multi-scan CrysAlis PRO and CrysAlis RED (Agilent, 2012) | k = −7→6 |
| Tmin = 0.370, Tmax = 1.000 | l = −35→29 |
| 8687 measured reflections |
Refinement
| Refinement on F2 | Primary atom site location: structure-invariant direct methods |
| Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
| R[F2 > 2σ(F2)] = 0.093 | H-atom parameters constrained |
| wR(F2) = 0.286 | w = 1/[σ2(Fo2) + (0.1595P)2 + 1.6733P] where P = (Fo2 + 2Fc2)/3 |
| S = 1.04 | (Δ/σ)max < 0.001 |
| 2868 reflections | Δρmax = 0.87 e Å−3 |
| 183 parameters | Δρmin = −0.44 e Å−3 |
| 0 restraints |
Special details
| 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. |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2)
| x | y | z | Uiso*/Ueq | ||
| Cl1 | −0.25150 (13) | 0.8390 (2) | 0.33097 (5) | 0.0819 (5) | |
| O1 | 0.2335 (4) | 0.2755 (5) | 0.48768 (11) | 0.0695 (8) | |
| C1 | 0.2184 (5) | 0.4826 (7) | 0.48178 (13) | 0.0576 (10) | |
| C2 | 0.1070 (4) | 0.5752 (6) | 0.44409 (14) | 0.0550 (9) | |
| C3 | 0.0602 (5) | 0.4451 (7) | 0.40431 (15) | 0.0625 (10) | |
| H3 | 0.1034 | 0.2981 | 0.4012 | 0.075* | |
| C4 | −0.0468 (5) | 0.5249 (8) | 0.36970 (16) | 0.0675 (11) | |
| H4 | −0.0755 | 0.4358 | 0.3424 | 0.081* | |
| C5 | −0.1133 (5) | 0.7368 (8) | 0.37462 (16) | 0.0638 (11) | |
| C6 | −0.0724 (5) | 0.8693 (8) | 0.41294 (17) | 0.0691 (12) | |
| H6 | −0.1192 | 1.0137 | 0.4161 | 0.083* | |
| C7 | 0.0386 (5) | 0.7896 (7) | 0.44713 (16) | 0.0677 (12) | |
| H7 | 0.0696 | 0.8833 | 0.4736 | 0.081* | |
| C8 | 0.3018 (5) | 0.6508 (8) | 0.51427 (16) | 0.0671 (11) | |
| H8 | 0.3047 | 0.8073 | 0.5055 | 0.080* | |
| C9 | 0.3719 (5) | 0.5833 (8) | 0.55524 (17) | 0.0676 (11) | |
| H9 | 0.3598 | 0.4270 | 0.5630 | 0.081* | |
| C10 | 0.4664 (5) | 0.7227 (8) | 0.59013 (16) | 0.0652 (11) | |
| C11 | 0.5252 (5) | 0.9341 (8) | 0.57874 (15) | 0.0676 (11) | |
| H11 | 0.5026 | 0.9925 | 0.5478 | 0.081* | |
| C12 | 0.6155 (5) | 1.0579 (7) | 0.61201 (14) | 0.0612 (10) | |
| H12 | 0.6546 | 1.2016 | 0.6038 | 0.073* | |
| C13 | 0.6505 (4) | 0.9774 (6) | 0.65722 (13) | 0.0529 (9) | |
| C14 | 0.5907 (5) | 0.7645 (7) | 0.66783 (15) | 0.0613 (10) | |
| H14 | 0.6116 | 0.7055 | 0.6987 | 0.074* | |
| C15 | 0.5034 (5) | 0.6414 (7) | 0.63453 (17) | 0.0694 (12) | |
| H15 | 0.4671 | 0.4953 | 0.6424 | 0.083* | |
| C16 | 0.7492 (5) | 1.1144 (7) | 0.69393 (15) | 0.0614 (10) | |
| H16 | 0.7841 | 1.2548 | 0.6786 | 0.074* | |
| C17 | 0.6624 (6) | 1.1896 (8) | 0.73356 (16) | 0.0706 (12) | |
| H17A | 0.5750 | 1.2834 | 0.7209 | 0.106* | |
| H17B | 0.7299 | 1.2794 | 0.7563 | 0.106* | |
| H17C | 0.6265 | 1.0545 | 0.7490 | 0.106* | |
| C18 | 0.8911 (5) | 0.9757 (10) | 0.7134 (2) | 0.0834 (14) | |
| H18A | 0.8599 | 0.8406 | 0.7299 | 0.125* | |
| H18B | 0.9583 | 1.0709 | 0.7351 | 0.125* | |
| H18C | 0.9454 | 0.9273 | 0.6875 | 0.125* |
Atomic displacement parameters (Å2)
| U11 | U22 | U33 | U12 | U13 | U23 | |
| Cl1 | 0.0684 (8) | 0.0788 (8) | 0.1002 (10) | −0.0040 (5) | 0.0173 (6) | 0.0148 (6) |
| O1 | 0.0799 (19) | 0.0492 (16) | 0.0811 (19) | −0.0082 (14) | 0.0161 (15) | −0.0158 (14) |
| C1 | 0.064 (2) | 0.053 (2) | 0.061 (2) | −0.0177 (17) | 0.0283 (18) | −0.0123 (17) |
| C2 | 0.059 (2) | 0.0465 (19) | 0.065 (2) | −0.0154 (16) | 0.0298 (18) | −0.0121 (16) |
| C3 | 0.073 (3) | 0.047 (2) | 0.071 (2) | −0.0081 (18) | 0.022 (2) | −0.0150 (18) |
| C4 | 0.081 (3) | 0.055 (2) | 0.068 (2) | −0.010 (2) | 0.016 (2) | −0.0130 (19) |
| C5 | 0.059 (2) | 0.058 (2) | 0.079 (3) | −0.0136 (18) | 0.029 (2) | −0.001 (2) |
| C6 | 0.066 (3) | 0.053 (2) | 0.092 (3) | −0.0027 (19) | 0.027 (2) | −0.011 (2) |
| C7 | 0.077 (3) | 0.053 (2) | 0.078 (3) | −0.013 (2) | 0.028 (2) | −0.022 (2) |
| C8 | 0.071 (3) | 0.061 (2) | 0.073 (3) | −0.011 (2) | 0.022 (2) | −0.010 (2) |
| C9 | 0.067 (2) | 0.059 (2) | 0.081 (3) | −0.009 (2) | 0.027 (2) | −0.013 (2) |
| C10 | 0.065 (2) | 0.057 (2) | 0.076 (3) | −0.0096 (19) | 0.016 (2) | −0.0076 (19) |
| C11 | 0.076 (3) | 0.064 (3) | 0.065 (2) | −0.021 (2) | 0.015 (2) | 0.0024 (19) |
| C12 | 0.066 (2) | 0.055 (2) | 0.065 (2) | −0.0173 (18) | 0.0215 (19) | 0.0001 (18) |
| C13 | 0.0468 (18) | 0.0501 (19) | 0.066 (2) | −0.0054 (15) | 0.0211 (16) | −0.0031 (16) |
| C14 | 0.060 (2) | 0.053 (2) | 0.071 (2) | −0.0070 (18) | 0.0101 (18) | 0.0066 (18) |
| C15 | 0.072 (3) | 0.050 (2) | 0.086 (3) | −0.0152 (19) | 0.006 (2) | 0.013 (2) |
| C16 | 0.060 (2) | 0.057 (2) | 0.069 (2) | −0.0092 (18) | 0.0171 (19) | −0.0049 (18) |
| C17 | 0.079 (3) | 0.066 (3) | 0.069 (3) | 0.002 (2) | 0.020 (2) | −0.008 (2) |
| C18 | 0.053 (2) | 0.092 (4) | 0.105 (4) | −0.004 (2) | 0.010 (2) | −0.021 (3) |
Geometric parameters (Å, º)
| Cl1—C5 | 1.743 (5) | C10—C15 | 1.364 (6) |
| O1—C1 | 1.228 (5) | C11—H11 | 0.9500 |
| C1—C2 | 1.472 (6) | C11—C12 | 1.372 (6) |
| C1—C8 | 1.486 (6) | C12—H12 | 0.9500 |
| C2—C3 | 1.393 (5) | C12—C13 | 1.382 (6) |
| C2—C7 | 1.400 (6) | C13—C14 | 1.401 (5) |
| C3—H3 | 0.9500 | C13—C16 | 1.512 (5) |
| C3—C4 | 1.366 (6) | C14—H14 | 0.9500 |
| C4—H4 | 0.9500 | C14—C15 | 1.358 (6) |
| C4—C5 | 1.386 (6) | C15—H15 | 0.9500 |
| C5—C6 | 1.359 (6) | C16—H16 | 1.0000 |
| C6—H6 | 0.9500 | C16—C17 | 1.521 (6) |
| C6—C7 | 1.379 (7) | C16—C18 | 1.538 (7) |
| C7—H7 | 0.9500 | C17—H17A | 0.9800 |
| C8—H8 | 0.9500 | C17—H17B | 0.9800 |
| C8—C9 | 1.321 (7) | C17—H17C | 0.9800 |
| C9—H9 | 0.9500 | C18—H18A | 0.9800 |
| C9—C10 | 1.469 (6) | C18—H18B | 0.9800 |
| C10—C11 | 1.396 (6) | C18—H18C | 0.9800 |
| O1—C1—C2 | 121.0 (3) | C12—C11—H11 | 119.9 |
| O1—C1—C8 | 121.9 (4) | C11—C12—H12 | 119.4 |
| C2—C1—C8 | 116.9 (4) | C11—C12—C13 | 121.2 (4) |
| C3—C2—C1 | 120.4 (4) | C13—C12—H12 | 119.4 |
| C3—C2—C7 | 117.0 (4) | C12—C13—C14 | 117.6 (4) |
| C7—C2—C1 | 122.5 (4) | C12—C13—C16 | 121.2 (3) |
| C2—C3—H3 | 119.4 | C14—C13—C16 | 121.2 (4) |
| C4—C3—C2 | 121.3 (4) | C13—C14—H14 | 119.6 |
| C4—C3—H3 | 119.4 | C15—C14—C13 | 120.9 (4) |
| C3—C4—H4 | 120.2 | C15—C14—H14 | 119.6 |
| C3—C4—C5 | 119.6 (4) | C10—C15—H15 | 119.2 |
| C5—C4—H4 | 120.2 | C14—C15—C10 | 121.6 (4) |
| C4—C5—Cl1 | 120.0 (4) | C14—C15—H15 | 119.2 |
| C6—C5—Cl1 | 118.7 (4) | C13—C16—H16 | 108.0 |
| C6—C5—C4 | 121.3 (4) | C13—C16—C17 | 112.1 (3) |
| C5—C6—H6 | 120.7 | C13—C16—C18 | 110.3 (4) |
| C5—C6—C7 | 118.6 (4) | C17—C16—H16 | 108.0 |
| C7—C6—H6 | 120.7 | C17—C16—C18 | 110.3 (4) |
| C2—C7—H7 | 118.9 | C18—C16—H16 | 108.0 |
| C6—C7—C2 | 122.1 (4) | C16—C17—H17A | 109.5 |
| C6—C7—H7 | 118.9 | C16—C17—H17B | 109.5 |
| C1—C8—H8 | 119.9 | C16—C17—H17C | 109.5 |
| C9—C8—C1 | 120.2 (4) | H17A—C17—H17B | 109.5 |
| C9—C8—H8 | 119.9 | H17A—C17—H17C | 109.5 |
| C8—C9—H9 | 116.3 | H17B—C17—H17C | 109.5 |
| C8—C9—C10 | 127.3 (4) | C16—C18—H18A | 109.5 |
| C10—C9—H9 | 116.3 | C16—C18—H18B | 109.5 |
| C11—C10—C9 | 121.8 (4) | C16—C18—H18C | 109.5 |
| C15—C10—C9 | 119.7 (4) | H18A—C18—H18B | 109.5 |
| C15—C10—C11 | 118.5 (4) | H18A—C18—H18C | 109.5 |
| C10—C11—H11 | 119.9 | H18B—C18—H18C | 109.5 |
| C12—C11—C10 | 120.3 (4) | ||
| Cl1—C5—C6—C7 | −179.1 (3) | C8—C9—C10—C11 | −16.7 (7) |
| O1—C1—C2—C3 | −25.1 (5) | C8—C9—C10—C15 | 165.8 (5) |
| O1—C1—C2—C7 | 152.0 (4) | C9—C10—C11—C12 | −178.8 (4) |
| O1—C1—C8—C9 | −13.1 (6) | C9—C10—C15—C14 | 179.8 (4) |
| C1—C2—C3—C4 | 177.8 (4) | C10—C11—C12—C13 | 0.1 (7) |
| C1—C2—C7—C6 | −176.0 (4) | C11—C10—C15—C14 | 2.3 (7) |
| C1—C8—C9—C10 | 176.1 (4) | C11—C12—C13—C14 | 0.1 (6) |
| C2—C1—C8—C9 | 162.2 (4) | C11—C12—C13—C16 | −179.6 (4) |
| C2—C3—C4—C5 | −1.7 (6) | C12—C13—C14—C15 | 0.9 (6) |
| C3—C2—C7—C6 | 1.1 (6) | C12—C13—C16—C17 | 115.4 (4) |
| C3—C4—C5—Cl1 | −179.3 (3) | C12—C13—C16—C18 | −121.2 (4) |
| C3—C4—C5—C6 | 1.1 (6) | C13—C14—C15—C10 | −2.1 (7) |
| C4—C5—C6—C7 | 0.5 (6) | C14—C13—C16—C17 | −64.3 (5) |
| C5—C6—C7—C2 | −1.7 (6) | C14—C13—C16—C18 | 59.0 (5) |
| C7—C2—C3—C4 | 0.6 (6) | C15—C10—C11—C12 | −1.3 (7) |
| C8—C1—C2—C3 | 159.6 (4) | C16—C13—C14—C15 | −179.4 (4) |
| C8—C1—C2—C7 | −23.4 (5) |
Footnotes
Supporting information for this paper is available from the IUCr electronic archives (Reference: ZS2302).
References
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Associated Data
This section collects any data citations, data availability statements, or supplementary materials included in this article.
Supplementary Materials
Crystal structure: contains datablock(s) I. DOI: 10.1107/S1600536814015281/zs2302sup1.cif
Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536814015281/zs2302Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536814015281/zs2302Isup3.cml
CCDC reference: 1011011
Additional supporting information: crystallographic information; 3D view; checkCIF report
