organic compounds
(2E)-3-(3,4-Dimethoxyphenyl)-1-(2,5-dimethylthiophen-3-yl)prop-2-en-1-one
aThe Center of Excellence for Advanced Materials Research, King Abdul Aziz University, Jeddah 21589, PO Box 80203, Saudi Arabia, bDepartment of Chemistry, Faculty of Science, King Abdul Aziz University, Jeddah 21589, PO Box 80203, Saudi Arabia, and cDepartment of Physics, University of Sargodha, Sargodha, Pakistan
*Correspondence e-mail: dmntahir_uos@yahoo.com
The molecule of the title compound, C17H18O3S, is essentially planar: the phenyl and thiophene rings form a dihedral angle of 2.79 (10)° and they are inclined to the central propenone unit by 6.20 (15) and 4.78 (15)°, respectively. In the crystal, molecules are connected into dimers via pairs of C—H⋯O interactions, generating R22(14) motifs. π–π stacking interactions between the thiophene rings also occur, with a centroid–centroid distance of 3.8062 (12) Å.
Related literature
For background to et al. (2010); Deng et al. (2007); Liu et al. (2003); Verma et al. (2007). For graph-set notation, see: Bernstein et al. (1995).
their activity and applications, see: BandgarExperimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2009); cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON.
Supporting information
https://doi.org/10.1107/S1600536810029272/gk2297sup1.cif
contains datablocks text, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810029272/gk2297Isup2.hkl
A solution of 3-acetyl-2,5-dimethythiophene (0.38 g, 2.5 mmol) and 3,4-dimethoxybenzaldehyde (0.41 g, 2.5 mmol) in ethanolic solution of NaOH (3.0 g in 10 ml of methanol) was stirred for 16 h at room temperature. The solution was poured into ice cold water of pH = 2 (pH adjusted by HCl). The solid was separated and dissolved in CH2Cl2, washed with ═O), 1583(C═C).
of NaHCO3 and evaporated to dryness. The residual was recrystallized from methanol/chloroform to affoard light yellow prisms . Yield: 76%; m.p. 387–388 K. IR (KBr) \vmax cm-1: 2909 (C—H), 1647 (CThe H-atoms were positioned geometrically (C–H = 0.93–0.96 Å) and refined as riding with Uiso(H) = xUeq(C), where x = 1.5 for methyl and x = 1.2 for aryl H-atoms. One of the methyl group is disordered over two positions related by a rotation of 60° around the C-C bond.
α,β- Unsaturated are a family of bicyclic defined by the presence of two benzene rings joined by a three carbon bridge. Many natural or synthetic as well as chalcone glucosides and dimeric were found to show diverse pharmacological effects, such as antimicrobial activity (Bandgar et al., 2010), anti-HIV-1 protease activity (Deng et al., 2007) and antileishmanial activity (Liu et al., 2003). In addition, were used as important intermediates for the total synthesis of some natural products (Verma et al., 2007). On the bases of these aspects, we herein report the synthesis and of title compound (Fig. 1).
In the title compound, the group A (C1—C6/O1/O2) of 3,4-dimethoxyphenyl, the central group B (C9—C11/O3) and group C (C12—C17/S1) of 2,5-dimethylthiophen-3-yl moiety are planar. The dihedral angle between A/B, A/C and B/C is 6.58 (14), 3.19 (8) and 4.78 (15)°, respectively. The C-atoms, C7 and C8 of methoxy groups are at a distance of -0.1564 (27) and -0.0979 (32) Å from the mean square plane of the group A. The title compound consists of dimers which are formed due to C—H···O type of intermolecular H-bonding (Table 1, Fig. 2) and complete R22(14) ring motif (Bernstein et al., 1995). The π···π stacking interactions between their thiophene rings is also present, with the centroid-to centroid distance of 3.8062 (12) Å [symmetry code: - x, 1 - y, - z].
For background to
their activity and applications, see: Bandgar et al. (2010); Deng et al. (2007); Liu et al. (2003); Verma et al. (2007). For graph-set notation, see: Bernstein et al. (1995).Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON (Spek, 2009).C17H18O3S | F(000) = 640 |
Mr = 302.37 | Dx = 1.291 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 2182 reflections |
a = 9.1821 (6) Å | θ = 2.5–25.3° |
b = 8.3529 (5) Å | µ = 0.22 mm−1 |
c = 20.3443 (13) Å | T = 296 K |
β = 94.624 (4)° | Prism, yellow |
V = 1555.27 (17) Å3 | 0.30 × 0.24 × 0.22 mm |
Z = 4 |
Bruker KAPPA APEXII CCD diffractometer | 2791 independent reflections |
Radiation source: fine-focus sealed tube | 2182 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.025 |
Detector resolution: 8.10 pixels mm-1 | θmax = 25.3°, θmin = 2.5° |
ω scans | h = −10→11 |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | k = −9→10 |
Tmin = 0.868, Tmax = 0.965 | l = −24→24 |
11371 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)] = 0.036 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.106 | H-atom parameters constrained |
S = 1.07 | w = 1/[σ2(Fo2) + (0.0462P)2 + 0.374P] where P = (Fo2 + 2Fc2)/3 |
2791 reflections | (Δ/σ)max < 0.001 |
191 parameters | Δρmax = 0.15 e Å−3 |
0 restraints | Δρmin = −0.24 e Å−3 |
C17H18O3S | V = 1555.27 (17) Å3 |
Mr = 302.37 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 9.1821 (6) Å | µ = 0.22 mm−1 |
b = 8.3529 (5) Å | T = 296 K |
c = 20.3443 (13) Å | 0.30 × 0.24 × 0.22 mm |
β = 94.624 (4)° |
Bruker KAPPA APEXII CCD diffractometer | 2791 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 2182 reflections with I > 2σ(I) |
Tmin = 0.868, Tmax = 0.965 | Rint = 0.025 |
11371 measured reflections |
R[F2 > 2σ(F2)] = 0.036 | 0 restraints |
wR(F2) = 0.106 | H-atom parameters constrained |
S = 1.07 | Δρmax = 0.15 e Å−3 |
2791 reflections | Δρmin = −0.24 e Å−3 |
191 parameters |
Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell e.s.d.'s are taken into account in the estimation of distances, angles and torsion angles |
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) | |
S1 | −0.23565 (6) | 0.41751 (7) | −0.05399 (3) | 0.0660 (2) | |
O1 | 0.29637 (14) | −0.19408 (15) | 0.29377 (6) | 0.0576 (4) | |
O2 | 0.54659 (15) | −0.32480 (16) | 0.28650 (7) | 0.0659 (5) | |
O3 | 0.20712 (19) | 0.1767 (2) | −0.04839 (7) | 0.0981 (7) | |
C1 | 0.37251 (18) | −0.05442 (19) | 0.12728 (8) | 0.0467 (6) | |
C2 | 0.29878 (18) | −0.07466 (19) | 0.18470 (8) | 0.0450 (5) | |
C3 | 0.36019 (19) | −0.16436 (19) | 0.23649 (8) | 0.0451 (5) | |
C4 | 0.49784 (19) | −0.2356 (2) | 0.23254 (9) | 0.0490 (6) | |
C5 | 0.57073 (19) | −0.2145 (2) | 0.17692 (10) | 0.0551 (6) | |
C6 | 0.50821 (19) | −0.1245 (2) | 0.12462 (9) | 0.0541 (6) | |
C7 | 0.1508 (2) | −0.1415 (3) | 0.29816 (9) | 0.0614 (7) | |
C8 | 0.6814 (3) | −0.4081 (3) | 0.28383 (12) | 0.0842 (9) | |
C9 | 0.3079 (2) | 0.0318 (2) | 0.06976 (9) | 0.0543 (6) | |
C10 | 0.1823 (2) | 0.1089 (2) | 0.06199 (8) | 0.0518 (6) | |
C11 | 0.1314 (2) | 0.1829 (2) | −0.00184 (9) | 0.0582 (7) | |
C12 | −0.0124 (2) | 0.2618 (2) | −0.00808 (8) | 0.0512 (6) | |
C13 | −0.1133 (2) | 0.2654 (3) | 0.04167 (9) | 0.0626 (7) | |
C14 | −0.2388 (2) | 0.3431 (3) | 0.02449 (10) | 0.0645 (7) | |
C15 | −0.0661 (2) | 0.3419 (2) | −0.06373 (9) | 0.0534 (6) | |
C16 | 0.00200 (19) | 0.3678 (3) | −0.12765 (8) | 0.0764 (9) | |
C17 | −0.3685 (2) | 0.3698 (3) | 0.06374 (9) | 0.0992 (11) | |
H2 | 0.20796 | −0.02712 | 0.18767 | 0.0540* | |
H5 | 0.66227 | −0.26053 | 0.17423 | 0.0661* | |
H6 | 0.55856 | −0.11126 | 0.08712 | 0.0649* | |
H7A | 0.08903 | −0.18692 | 0.26264 | 0.0921* | |
H7B | 0.14723 | −0.02682 | 0.29529 | 0.0921* | |
H7C | 0.11750 | −0.17510 | 0.33951 | 0.0921* | |
H8A | 0.75919 | −0.33235 | 0.28076 | 0.1263* | |
H8B | 0.67593 | −0.47691 | 0.24591 | 0.1263* | |
H8C | 0.69998 | −0.47129 | 0.32304 | 0.1263* | |
H9 | 0.36315 | 0.03252 | 0.03340 | 0.0652* | |
H10 | 0.12456 | 0.11680 | 0.09736 | 0.0621* | |
H13 | −0.09372 | 0.21771 | 0.08274 | 0.0751* | |
H16A | 0.01848 | 0.26624 | −0.14783 | 0.1146* | 0.800 |
H16B | 0.09342 | 0.42280 | −0.11923 | 0.1146* | 0.800 |
H16C | −0.06243 | 0.43103 | −0.15670 | 0.1146* | 0.800 |
H17A | −0.35355 | 0.31512 | 0.10525 | 0.1488* | |
H17B | −0.45484 | 0.32891 | 0.03968 | 0.1488* | |
H17C | −0.38004 | 0.48231 | 0.07136 | 0.1488* | |
H16D | −0.06913 | 0.34716 | −0.16386 | 0.1146* | 0.200 |
H16E | 0.08332 | 0.29641 | −0.13003 | 0.1146* | 0.200 |
H16F | 0.03529 | 0.47650 | −0.12987 | 0.1146* | 0.200 |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0546 (3) | 0.0741 (4) | 0.0675 (3) | 0.0037 (3) | −0.0054 (2) | −0.0005 (3) |
O1 | 0.0578 (8) | 0.0640 (8) | 0.0522 (7) | 0.0112 (6) | 0.0117 (6) | 0.0113 (6) |
O2 | 0.0603 (8) | 0.0686 (9) | 0.0679 (9) | 0.0191 (7) | −0.0009 (7) | 0.0068 (7) |
O3 | 0.0874 (11) | 0.1509 (16) | 0.0607 (9) | 0.0547 (11) | 0.0350 (8) | 0.0337 (10) |
C1 | 0.0462 (10) | 0.0443 (9) | 0.0504 (10) | −0.0022 (7) | 0.0085 (8) | −0.0028 (7) |
C2 | 0.0419 (9) | 0.0426 (9) | 0.0512 (10) | 0.0027 (7) | 0.0080 (7) | −0.0023 (7) |
C3 | 0.0468 (10) | 0.0402 (9) | 0.0489 (9) | −0.0008 (7) | 0.0068 (8) | −0.0029 (7) |
C4 | 0.0462 (10) | 0.0434 (9) | 0.0565 (10) | 0.0007 (8) | −0.0014 (8) | −0.0028 (8) |
C5 | 0.0390 (10) | 0.0560 (11) | 0.0706 (12) | 0.0033 (8) | 0.0069 (9) | −0.0077 (9) |
C6 | 0.0475 (10) | 0.0590 (11) | 0.0575 (11) | −0.0019 (8) | 0.0142 (8) | −0.0030 (9) |
C7 | 0.0589 (12) | 0.0756 (13) | 0.0514 (10) | 0.0145 (10) | 0.0152 (9) | 0.0050 (9) |
C8 | 0.0675 (14) | 0.0900 (17) | 0.0931 (17) | 0.0315 (13) | −0.0065 (12) | 0.0054 (13) |
C9 | 0.0573 (11) | 0.0587 (11) | 0.0490 (10) | 0.0026 (9) | 0.0164 (8) | 0.0015 (8) |
C10 | 0.0536 (11) | 0.0596 (11) | 0.0433 (9) | 0.0034 (9) | 0.0117 (8) | −0.0026 (8) |
C11 | 0.0617 (12) | 0.0680 (12) | 0.0466 (10) | 0.0098 (9) | 0.0146 (9) | 0.0029 (9) |
C12 | 0.0527 (10) | 0.0548 (10) | 0.0465 (10) | 0.0003 (8) | 0.0061 (8) | −0.0044 (8) |
C13 | 0.0606 (12) | 0.0760 (13) | 0.0525 (11) | 0.0089 (10) | 0.0131 (9) | 0.0037 (9) |
C14 | 0.0541 (12) | 0.0737 (13) | 0.0666 (12) | 0.0029 (10) | 0.0104 (9) | −0.0047 (10) |
C15 | 0.0549 (11) | 0.0563 (10) | 0.0484 (10) | −0.0049 (8) | 0.0006 (8) | −0.0058 (8) |
C16 | 0.0811 (16) | 0.0956 (16) | 0.0524 (12) | 0.0066 (13) | 0.0046 (11) | 0.0097 (11) |
C17 | 0.0693 (16) | 0.134 (2) | 0.0976 (19) | 0.0252 (16) | 0.0270 (14) | 0.0061 (17) |
S1—C14 | 1.716 (2) | C2—H2 | 0.9300 |
S1—C15 | 1.7063 (19) | C5—H5 | 0.9300 |
O1—C3 | 1.369 (2) | C6—H6 | 0.9300 |
O1—C7 | 1.417 (2) | C7—H7A | 0.9600 |
O2—C4 | 1.372 (2) | C7—H7B | 0.9600 |
O2—C8 | 1.425 (3) | C7—H7C | 0.9600 |
O3—C11 | 1.220 (2) | C8—H8A | 0.9600 |
C1—C2 | 1.407 (2) | C8—H8B | 0.9600 |
C1—C6 | 1.382 (2) | C8—H8C | 0.9600 |
C1—C9 | 1.459 (2) | C9—H9 | 0.9300 |
C2—C3 | 1.376 (2) | C10—H10 | 0.9300 |
C3—C4 | 1.405 (2) | C13—H13 | 0.9300 |
C4—C5 | 1.372 (3) | C16—H16A | 0.9600 |
C5—C6 | 1.389 (3) | C16—H16B | 0.9600 |
C9—C10 | 1.319 (3) | C16—H16C | 0.9600 |
C10—C11 | 1.480 (2) | C16—H16D | 0.9600 |
C11—C12 | 1.472 (3) | C16—H16E | 0.9600 |
C12—C13 | 1.427 (3) | C16—H16F | 0.9600 |
C12—C15 | 1.372 (2) | C17—H17A | 0.9600 |
C13—C14 | 1.344 (3) | C17—H17B | 0.9600 |
C14—C17 | 1.503 (3) | C17—H17C | 0.9600 |
C15—C16 | 1.503 (2) | ||
S1···C1i | 3.5635 (17) | H2···C7 | 2.5400 |
S1···C11ii | 3.6293 (18) | H2···C10 | 2.7900 |
S1···C12ii | 3.6734 (18) | H2···H7A | 2.3600 |
S1···C7iii | 3.624 (2) | H2···H7B | 2.3000 |
O1···O2 | 2.5588 (19) | H2···H10 | 2.2800 |
O1···C2iv | 3.335 (2) | H2···O1vii | 2.8100 |
O1···C10iv | 3.356 (2) | H5···C8 | 2.5400 |
O2···O1 | 2.5588 (19) | H5···H8A | 2.3500 |
O3···C6v | 3.175 (2) | H5···H8B | 2.3200 |
O3···C16 | 2.865 (3) | H5···H16Ev | 2.5900 |
O1···H16Cvi | 2.7000 | H6···H9 | 2.3500 |
O1···H10iv | 2.7700 | H6···O3v | 2.4100 |
O1···H2iv | 2.8100 | H7A···C2 | 2.7600 |
O2···H13iv | 2.6800 | H7A···H2 | 2.3600 |
O2···H7Biv | 2.8800 | H7A···H16Ai | 2.5500 |
O3···H9 | 2.4300 | H7A···H16Di | 2.4100 |
O3···H16B | 2.6700 | H7B···C2 | 2.7700 |
O3···H16E | 2.1800 | H7B···H2 | 2.3000 |
O3···H16A | 2.6600 | H7B···O2vii | 2.8800 |
O3···H6v | 2.4100 | H7B···C3vii | 3.1000 |
C1···S1i | 3.5635 (17) | H7B···C4vii | 2.8100 |
C2···O1vii | 3.335 (2) | H8A···C5 | 2.8000 |
C5···C8viii | 3.475 (3) | H8A···H5 | 2.3500 |
C6···O3v | 3.175 (2) | H8B···C5 | 2.7400 |
C7···S1vi | 3.624 (2) | H8B···H5 | 2.3200 |
C8···C5ix | 3.475 (3) | H8C···C5ix | 2.9300 |
C10···C12i | 3.598 (2) | H8C···C6ix | 3.0800 |
C10···O1vii | 3.356 (2) | H9···O3 | 2.4300 |
C11···S1ii | 3.6293 (18) | H9···H6 | 2.3500 |
C12···C10i | 3.598 (2) | H10···C2 | 2.8000 |
C12···S1ii | 3.6734 (18) | H10···C13 | 2.6800 |
C16···O3 | 2.865 (3) | H10···H2 | 2.2800 |
C2···H7B | 2.7700 | H10···H13 | 2.1700 |
C2···H10 | 2.8000 | H10···O1vii | 2.7700 |
C2···H7A | 2.7600 | H13···C10 | 2.7600 |
C3···H7Biv | 3.1000 | H13···H10 | 2.1700 |
C3···H16Cvi | 2.9600 | H13···H17A | 2.6000 |
C4···H7Biv | 2.8100 | H13···O2vii | 2.6800 |
C5···H8Cviii | 2.9300 | H13···C8vii | 3.0800 |
C5···H8A | 2.8000 | H16A···O3 | 2.6600 |
C5···H8B | 2.7400 | H16A···H7Ai | 2.5500 |
C6···H8Cviii | 3.0800 | H16B···O3 | 2.6700 |
C7···H2 | 2.5400 | H16B···C13ii | 3.0400 |
C8···H13iv | 3.0800 | H16B···C14ii | 2.9800 |
C8···H5 | 2.5400 | H16C···O1iii | 2.7000 |
C10···H13 | 2.7600 | H16C···C3iii | 2.9600 |
C10···H2 | 2.7900 | H16D···H7Ai | 2.4100 |
C11···H16E | 2.7800 | H16E···C11 | 2.7800 |
C13···H10 | 2.6800 | H16E···O3 | 2.1800 |
C13···H16Fii | 2.8600 | H16E···H5v | 2.5900 |
C13···H16Bii | 3.0400 | H16F···C13ii | 2.8600 |
C14···H16Bii | 2.9800 | H17A···H13 | 2.6000 |
C14—S1—C15 | 93.32 (9) | O1—C7—H7A | 109.00 |
C3—O1—C7 | 117.93 (14) | O1—C7—H7B | 109.00 |
C4—O2—C8 | 117.60 (16) | O1—C7—H7C | 109.00 |
C2—C1—C6 | 118.52 (15) | H7A—C7—H7B | 109.00 |
C2—C1—C9 | 122.25 (15) | H7A—C7—H7C | 109.00 |
C6—C1—C9 | 119.17 (15) | H7B—C7—H7C | 109.00 |
C1—C2—C3 | 120.42 (15) | O2—C8—H8A | 110.00 |
O1—C3—C2 | 125.00 (15) | O2—C8—H8B | 109.00 |
O1—C3—C4 | 114.88 (15) | O2—C8—H8C | 109.00 |
C2—C3—C4 | 120.12 (16) | H8A—C8—H8B | 109.00 |
O2—C4—C3 | 114.92 (15) | H8A—C8—H8C | 109.00 |
O2—C4—C5 | 125.49 (16) | H8B—C8—H8C | 109.00 |
C3—C4—C5 | 119.59 (16) | C1—C9—H9 | 115.00 |
C4—C5—C6 | 120.17 (16) | C10—C9—H9 | 115.00 |
C1—C6—C5 | 121.18 (16) | C9—C10—H10 | 119.00 |
C1—C9—C10 | 129.21 (17) | C11—C10—H10 | 119.00 |
C9—C10—C11 | 121.36 (16) | C12—C13—H13 | 123.00 |
O3—C11—C10 | 120.27 (17) | C14—C13—H13 | 123.00 |
O3—C11—C12 | 121.02 (17) | C15—C16—H16A | 109.00 |
C10—C11—C12 | 118.71 (15) | C15—C16—H16B | 109.00 |
C11—C12—C13 | 125.28 (16) | C15—C16—H16C | 109.00 |
C11—C12—C15 | 123.34 (16) | C15—C16—H16D | 109.00 |
C13—C12—C15 | 111.37 (17) | C15—C16—H16E | 109.00 |
C12—C13—C14 | 114.71 (18) | C15—C16—H16F | 109.00 |
S1—C14—C13 | 109.79 (15) | H16A—C16—H16B | 109.00 |
S1—C14—C17 | 120.94 (15) | H16A—C16—H16C | 109.00 |
C13—C14—C17 | 129.27 (19) | H16B—C16—H16C | 109.00 |
S1—C15—C12 | 110.81 (14) | H16D—C16—H16E | 109.00 |
S1—C15—C16 | 119.62 (14) | H16D—C16—H16F | 109.00 |
C12—C15—C16 | 129.57 (17) | H16E—C16—H16F | 109.00 |
C1—C2—H2 | 120.00 | C14—C17—H17A | 109.00 |
C3—C2—H2 | 120.00 | C14—C17—H17B | 109.00 |
C4—C5—H5 | 120.00 | C14—C17—H17C | 109.00 |
C6—C5—H5 | 120.00 | H17A—C17—H17B | 109.00 |
C1—C6—H6 | 119.00 | H17A—C17—H17C | 109.00 |
C5—C6—H6 | 119.00 | H17B—C17—H17C | 109.00 |
C15—S1—C14—C13 | 0.60 (19) | C2—C3—C4—C5 | 0.3 (3) |
C15—S1—C14—C17 | −179.89 (19) | O2—C4—C5—C6 | 178.31 (16) |
C14—S1—C15—C12 | −0.23 (15) | C3—C4—C5—C6 | −0.6 (3) |
C14—S1—C15—C16 | 179.43 (17) | C4—C5—C6—C1 | 0.1 (3) |
C7—O1—C3—C2 | 6.1 (2) | C1—C9—C10—C11 | −176.81 (16) |
C7—O1—C3—C4 | −172.97 (16) | C9—C10—C11—O3 | −1.6 (3) |
C8—O2—C4—C3 | 176.26 (17) | C9—C10—C11—C12 | 177.63 (16) |
C8—O2—C4—C5 | −2.7 (3) | O3—C11—C12—C13 | 175.23 (19) |
C6—C1—C2—C3 | −0.9 (2) | O3—C11—C12—C15 | −4.6 (3) |
C9—C1—C2—C3 | 176.38 (16) | C10—C11—C12—C13 | −4.0 (3) |
C2—C1—C6—C5 | 0.7 (2) | C10—C11—C12—C15 | 176.11 (16) |
C9—C1—C6—C5 | −176.74 (16) | C11—C12—C13—C14 | −179.21 (19) |
C2—C1—C9—C10 | 3.9 (3) | C15—C12—C13—C14 | 0.7 (3) |
C6—C1—C9—C10 | −178.80 (18) | C11—C12—C15—S1 | 179.70 (14) |
C1—C2—C3—O1 | −178.57 (15) | C11—C12—C15—C16 | 0.1 (3) |
C1—C2—C3—C4 | 0.5 (2) | C13—C12—C15—S1 | −0.2 (2) |
O1—C3—C4—O2 | 0.4 (2) | C13—C12—C15—C16 | −179.81 (19) |
O1—C3—C4—C5 | 179.43 (15) | C12—C13—C14—S1 | −0.8 (3) |
C2—C3—C4—O2 | −178.71 (15) | C12—C13—C14—C17 | 179.7 (2) |
Symmetry codes: (i) −x, −y, −z; (ii) −x, −y+1, −z; (iii) x−1/2, −y+1/2, z−1/2; (iv) −x+1/2, y−1/2, −z+1/2; (v) −x+1, −y, −z; (vi) x+1/2, −y+1/2, z+1/2; (vii) −x+1/2, y+1/2, −z+1/2; (viii) −x+3/2, y+1/2, −z+1/2; (ix) −x+3/2, y−1/2, −z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C6—H6···O3v | 0.93 | 2.41 | 3.175 (2) | 139 |
Symmetry code: (v) −x+1, −y, −z. |
Experimental details
Crystal data | |
Chemical formula | C17H18O3S |
Mr | 302.37 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 296 |
a, b, c (Å) | 9.1821 (6), 8.3529 (5), 20.3443 (13) |
β (°) | 94.624 (4) |
V (Å3) | 1555.27 (17) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.22 |
Crystal size (mm) | 0.30 × 0.24 × 0.22 |
Data collection | |
Diffractometer | Bruker KAPPA APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.868, 0.965 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11371, 2791, 2182 |
Rint | 0.025 |
(sin θ/λ)max (Å−1) | 0.600 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.036, 0.106, 1.07 |
No. of reflections | 2791 |
No. of parameters | 191 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.15, −0.24 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009), WinGX (Farrugia, 1999) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C6—H6···O3i | 0.93 | 2.41 | 3.175 (2) | 139 |
Symmetry code: (i) −x+1, −y, −z. |
Acknowledgements
The authors would like to thank the Chemistry Department, King Abdul Aziz University, Jeddah, Saudi Arabia for providing research facilities and for financial support of this work via grant No. 3–045/430.
References
Bandgar, B. P., Patil, S. A., Korbad, B. L., Biradar, S. C., Nile, S. N. & Khobragade, C. N. (2010). Eur. J. Med. Chem. 45, 3223–3227. Web of Science CrossRef CAS PubMed Google Scholar
Bernstein, J., Davis, R. E., Shimoni, L. & Chang, N.-L. (1995). Angew. Chem. Int. Ed. Engl. 34, 1555–1573. CrossRef CAS Web of Science Google Scholar
Bruker (2005). SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Bruker (2009). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Deng, J., Sanchez, T., Al-Mawsawi, L. Q., Dayam, R., Yunes, R. A., Garofalo, A., Bolger, M. B. & Neamati, N. (2007). Bioorg. Med. Chem. 15, 4985–5002. Web of Science CrossRef PubMed CAS Google Scholar
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565. CrossRef IUCr Journals Google Scholar
Farrugia, L. J. (1999). J. Appl. Cryst. 32, 837–838. CrossRef CAS IUCr Journals Google Scholar
Liu, M., Wilairat, P., Croft, S. L., Tan, A. L. C. & Go, M. (2003). Bioorg. Med. Chem. 11, 2729–2738. Web of Science CrossRef PubMed CAS 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
Verma, A. K., Koul, S., Pannu, A. P. S. & Razdan, T. K. (2007). Tetrahedron, 63, 8715–8722. Web of Science CSD CrossRef CAS 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.
α,β- Unsaturated ketones are a family of bicyclic flavonoids, defined by the presence of two benzene rings joined by a three carbon bridge. Many natural or synthetic chalcones, as well as chalcone glucosides and dimeric chalcones, were found to show diverse pharmacological effects, such as antimicrobial activity (Bandgar et al., 2010), anti-HIV-1 protease activity (Deng et al., 2007) and antileishmanial activity (Liu et al., 2003). In addition, chalcones were used as important intermediates for the total synthesis of some natural products (Verma et al., 2007). On the bases of these aspects, we herein report the synthesis and crystal structure of title compound (Fig. 1).
In the title compound, the group A (C1—C6/O1/O2) of 3,4-dimethoxyphenyl, the central group B (C9—C11/O3) and group C (C12—C17/S1) of 2,5-dimethylthiophen-3-yl moiety are planar. The dihedral angle between A/B, A/C and B/C is 6.58 (14), 3.19 (8) and 4.78 (15)°, respectively. The C-atoms, C7 and C8 of methoxy groups are at a distance of -0.1564 (27) and -0.0979 (32) Å from the mean square plane of the group A. The title compound consists of dimers which are formed due to C—H···O type of intermolecular H-bonding (Table 1, Fig. 2) and complete R22(14) ring motif (Bernstein et al., 1995). The π···π stacking interactions between their thiophene rings is also present, with the centroid-to centroid distance of 3.8062 (12) Å [symmetry code: - x, 1 - y, - z].