organic compounds
2-(4-Fluorophenyl)-3-methylsulfanyl-5-phenyl-1-benzofuran
aDepartment of Chemistry, Dongeui University, San 24 Kaya-dong Busanjin-gu, Busan 614-714, Republic of Korea, and bDepartment of Chemistry, Pukyong National University, 599-1 Daeyeon 3-dong, Nam-gu, Busan 608-737, Republic of Korea
*Correspondence e-mail: uklee@pknu.ac.kr
In the title compound, C21H15FOS, the 4-fluorophenyl ring is rotated out of the benzofuran plane, making a dihedral angle of 24.3 (1)°. The dihedral angle between the phenyl ring and the benzofuran plane is 28.3 (1)°. The may be stabilized by two very weak aromatic π–π interactions between the furan and the benzene rings of neighbouring benzofuran systems; the centroid–centroid distances are 3.909 (4) and 4.028 (4) Å.
Related literature
For the crystal structures of similar 2,5-diaryl-3-methylsulfanyl-1-benzofuran derivatives, see: Choi, Seo et al. (2006); Choi, Woo et al. (2006). For natural products with benzofuran ring systems, see: Akgul & Anil (2003); Soekamto et al. (2003); von Reuss & König (2004).
Experimental
Crystal data
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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 (Farrugia, 1997) and DIAMOND (Brandenburg, 1998); software used to prepare material for publication: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536809041713/vm2006sup1.cif
contains datablock I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536809041713/vm2006Isup2.hkl
Zinc chloride (273 mg, 2.0 mmol) was added to a stirred solution of 4-phenylphenol (340 mg, 2.0 mmol) and 2-chloro-4'-fluoro-2-methylsulfanylacetophenone (437 mg, 2.0 mmol) in dichloromethane (30 ml) at room temperature, and stirring was continued at the same temperature for 40 min. The reaction was quenched by the addition of water and the organic layer separated, dried over magnesium sulfate, filtered and concentrated in vacuum. The residue was purified by
(carbon tetrachloride) to afford the title compound as a colorless solid [yield 68%, m.p. 431–432 K; Rf = 0.71 (carbon tetrachloride)]. Single crystals suitable for X-ray diffraction were prepared by evaporation of a solution of the title compound in tetrahydrofuran at room temperature.All H atoms were positioned geometrically and refined using a riding model, with C—H = 0.93 Å for the aryl H atoms and 0.96 Å for the methyl H atoms, and with Uiso(H) = 1.2Ueq(C) for the aryl H atoms and 1.5Ueq(C) for the methyl H atoms.
Molecules containing the benzofuran skeleton constitute a major group of naturally-occurring compounds that are of a remarkable interest because of their biological activities (Akgul & Anil, 2003; Soekamto et al., 2003; von Reuss & König, 2004). As a part of our continuing studies of the effect of side chain substituents on the solid state structures of 2,5-diaryl-3-methylsulfanyl-1-benzofuran analogues (Choi, Seo et al., 2006; Choi, Woo et al., 2006), we report the
of the title compound (Fig. 1).The benzofuran unit is essentially planar, with a mean deviation of 0.011 (2) Å from the least-squares plane defined by the nine constituent atoms. The 4-fluorophenyl ring is rotated out of the benzofuran plane, with a dihedral angle of 24.3 (1)°. The dihedral angle between the phenyl ring and the benzofuran plane is 28.3 (1)°. The molecular packing (Fig. 2) is stabilized by two aromatic π···π interactions between the furan and the benzene rings of adjacent benzofuran molecules, with a Cg1···Cg2i and a Cg2···Cg1i distances of 3.909 (4) and 4.028 (4) Å, respectively (Cg1 and Cg2 are the centroids of the C1/C2/C7/O/C8 furan ring and the C2–C7 benzene ring, respectively, symmetry code i: - x + 1, y - 1/2, - z + 1).
For the crystal structures of similar 2,5-diaryl-3-methylsulfanyl-1-benzofuran derivatives, see: Choi, Seo et al. (2006); Choi, Woo et al. (2006). For natural products with benzofuran ring systems, see: Akgul & Anil (2003); Soekamto et al. (2003); von Reuss & König (2004).
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 (Farrugia, 1997) and DIAMOND (Brandenburg, 1998); software used to prepare material for publication: SHELXL97.C21H15FOS | F(000) = 348 |
Mr = 334.39 | Dx = 1.390 Mg m−3 |
Monoclinic, P21 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2yb | Cell parameters from 5096 reflections |
a = 10.621 (6) Å | θ = 3.4–27.5° |
b = 7.192 (4) Å | µ = 0.22 mm−1 |
c = 11.642 (6) Å | T = 173 K |
β = 116.076 (5)° | Block, colorless |
V = 798.7 (8) Å3 | 0.50 × 0.42 × 0.33 mm |
Z = 2 |
Bruker SMART APEXII CCD diffractometer | 3339 independent reflections |
Radiation source: Rotating Anode | 3147 reflections with I > 2σ(I) |
HELIOS monochromator | Rint = 0.095 |
Detector resolution: 10.0 pixels mm-1 | θmax = 27.5°, θmin = 2.0° |
φ and ω scans | h = −12→13 |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | k = −9→9 |
Tmin = 0.893, Tmax = 0.932 | l = −14→15 |
7602 measured reflections |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.050 | H-atom parameters constrained |
wR(F2) = 0.133 | w = 1/[σ2(Fo2) + (0.0945P)2] where P = (Fo2 + 2Fc2)/3 |
S = 1.04 | (Δ/σ)max = 0.001 |
3339 reflections | Δρmax = 0.41 e Å−3 |
218 parameters | Δρmin = −0.44 e Å−3 |
1 restraint | Absolute structure: Flack (1983), 1362 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.00 (9) |
C21H15FOS | V = 798.7 (8) Å3 |
Mr = 334.39 | Z = 2 |
Monoclinic, P21 | Mo Kα radiation |
a = 10.621 (6) Å | µ = 0.22 mm−1 |
b = 7.192 (4) Å | T = 173 K |
c = 11.642 (6) Å | 0.50 × 0.42 × 0.33 mm |
β = 116.076 (5)° |
Bruker SMART APEXII CCD diffractometer | 3339 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | 3147 reflections with I > 2σ(I) |
Tmin = 0.893, Tmax = 0.932 | Rint = 0.095 |
7602 measured reflections |
R[F2 > 2σ(F2)] = 0.050 | H-atom parameters constrained |
wR(F2) = 0.133 | Δρmax = 0.41 e Å−3 |
S = 1.04 | Δρmin = −0.44 e Å−3 |
3339 reflections | Absolute structure: Flack (1983), 1362 Friedel pairs |
218 parameters | Absolute structure parameter: 0.00 (9) |
1 restraint |
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. |
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 > 2sigma(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 | ||
S | 0.55481 (6) | 0.85482 (12) | 0.86991 (5) | 0.03285 (19) | |
F | 1.25269 (13) | 0.7897 (3) | 1.00995 (14) | 0.0411 (4) | |
O | 0.63814 (15) | 0.7920 (2) | 0.57182 (13) | 0.0245 (4) | |
C1 | 0.5612 (2) | 0.8243 (3) | 0.72327 (19) | 0.0223 (5) | |
C2 | 0.4412 (2) | 0.8143 (3) | 0.60022 (19) | 0.0227 (5) | |
C3 | 0.2962 (2) | 0.8170 (3) | 0.55929 (18) | 0.0221 (5) | |
H3 | 0.2591 | 0.8309 | 0.6178 | 0.027* | |
C4 | 0.2085 (2) | 0.7984 (3) | 0.42913 (19) | 0.0212 (4) | |
C5 | 0.2683 (2) | 0.7823 (4) | 0.3427 (2) | 0.0260 (5) | |
H5 | 0.2089 | 0.7725 | 0.2558 | 0.031* | |
C6 | 0.4106 (2) | 0.7804 (4) | 0.38153 (19) | 0.0251 (5) | |
H6 | 0.4485 | 0.7701 | 0.3234 | 0.030* | |
C7 | 0.4948 (2) | 0.7947 (3) | 0.5121 (2) | 0.0230 (5) | |
C8 | 0.6759 (2) | 0.8099 (3) | 0.70145 (19) | 0.0234 (5) | |
C9 | 0.8275 (2) | 0.8059 (3) | 0.78298 (19) | 0.0229 (5) | |
C10 | 0.9163 (2) | 0.7210 (4) | 0.7396 (2) | 0.0251 (5) | |
H10 | 0.8786 | 0.6685 | 0.6584 | 0.030* | |
C11 | 1.0589 (2) | 0.7133 (4) | 0.8147 (2) | 0.0297 (5) | |
H11 | 1.1177 | 0.6548 | 0.7858 | 0.036* | |
C12 | 1.1119 (2) | 0.7952 (4) | 0.9344 (2) | 0.0283 (5) | |
C13 | 1.0284 (2) | 0.8825 (4) | 0.9805 (2) | 0.0290 (5) | |
H13 | 1.0674 | 0.9376 | 1.0610 | 0.035* | |
C14 | 0.8855 (2) | 0.8868 (4) | 0.9050 (2) | 0.0262 (5) | |
H14 | 0.8273 | 0.9437 | 0.9352 | 0.031* | |
C15 | 0.05328 (19) | 0.7926 (3) | 0.38285 (19) | 0.0219 (4) | |
C16 | −0.0110 (2) | 0.8798 (4) | 0.4505 (2) | 0.0260 (5) | |
H16 | 0.0430 | 0.9478 | 0.5238 | 0.031* | |
C17 | −0.1552 (2) | 0.8657 (4) | 0.4092 (2) | 0.0301 (5) | |
H17 | −0.1969 | 0.9239 | 0.4551 | 0.036* | |
C18 | −0.2363 (2) | 0.7662 (4) | 0.3008 (2) | 0.0332 (6) | |
H18 | −0.3322 | 0.7546 | 0.2748 | 0.040* | |
C19 | −0.1752 (2) | 0.6834 (4) | 0.2304 (2) | 0.0335 (6) | |
H19 | −0.2304 | 0.6199 | 0.1554 | 0.040* | |
C20 | −0.0313 (2) | 0.6951 (4) | 0.2718 (2) | 0.0263 (5) | |
H20 | 0.0094 | 0.6373 | 0.2249 | 0.032* | |
C21 | 0.4797 (3) | 0.6375 (5) | 0.8842 (3) | 0.0451 (7) | |
H21A | 0.5406 | 0.5375 | 0.8863 | 0.068* | |
H21B | 0.3899 | 0.6218 | 0.8123 | 0.068* | |
H21C | 0.4686 | 0.6371 | 0.9617 | 0.068* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S | 0.0337 (3) | 0.0481 (4) | 0.0206 (3) | −0.0045 (3) | 0.0155 (2) | −0.0065 (3) |
F | 0.0241 (7) | 0.0489 (10) | 0.0401 (8) | 0.0020 (6) | 0.0050 (6) | 0.0013 (8) |
O | 0.0244 (7) | 0.0326 (9) | 0.0174 (7) | 0.0000 (7) | 0.0101 (6) | −0.0011 (7) |
C1 | 0.0248 (9) | 0.0243 (12) | 0.0181 (9) | −0.0034 (8) | 0.0097 (8) | −0.0029 (9) |
C2 | 0.0292 (10) | 0.0231 (13) | 0.0178 (9) | −0.0019 (9) | 0.0123 (8) | −0.0015 (9) |
C3 | 0.0262 (10) | 0.0230 (12) | 0.0199 (9) | −0.0009 (9) | 0.0127 (8) | −0.0004 (9) |
C4 | 0.0249 (10) | 0.0196 (11) | 0.0198 (9) | 0.0002 (8) | 0.0105 (8) | 0.0002 (9) |
C5 | 0.0297 (11) | 0.0273 (12) | 0.0188 (9) | 0.0010 (10) | 0.0087 (8) | −0.0011 (9) |
C6 | 0.0304 (11) | 0.0310 (13) | 0.0169 (9) | 0.0000 (10) | 0.0130 (9) | −0.0013 (9) |
C7 | 0.0238 (9) | 0.0257 (12) | 0.0207 (10) | −0.0008 (9) | 0.0110 (8) | −0.0001 (9) |
C8 | 0.0299 (10) | 0.0227 (12) | 0.0184 (9) | −0.0013 (9) | 0.0113 (8) | −0.0011 (9) |
C9 | 0.0247 (10) | 0.0226 (12) | 0.0222 (10) | −0.0018 (9) | 0.0112 (8) | 0.0012 (9) |
C10 | 0.0305 (11) | 0.0223 (11) | 0.0235 (10) | −0.0015 (9) | 0.0129 (9) | −0.0022 (9) |
C11 | 0.0285 (11) | 0.0291 (13) | 0.0359 (12) | 0.0019 (9) | 0.0181 (10) | −0.0006 (11) |
C12 | 0.0218 (10) | 0.0278 (12) | 0.0288 (11) | −0.0005 (9) | 0.0052 (9) | 0.0057 (10) |
C13 | 0.0320 (11) | 0.0289 (14) | 0.0212 (10) | −0.0020 (10) | 0.0071 (9) | −0.0006 (10) |
C14 | 0.0277 (10) | 0.0261 (13) | 0.0242 (10) | 0.0002 (10) | 0.0108 (8) | −0.0017 (10) |
C15 | 0.0235 (10) | 0.0198 (11) | 0.0210 (9) | 0.0013 (9) | 0.0086 (8) | 0.0031 (9) |
C16 | 0.0293 (10) | 0.0236 (12) | 0.0247 (10) | 0.0017 (10) | 0.0115 (8) | 0.0002 (10) |
C17 | 0.0322 (11) | 0.0289 (12) | 0.0361 (12) | 0.0054 (11) | 0.0212 (9) | 0.0021 (12) |
C18 | 0.0218 (10) | 0.0351 (14) | 0.0408 (13) | 0.0023 (9) | 0.0121 (10) | 0.0021 (12) |
C19 | 0.0276 (11) | 0.0355 (14) | 0.0303 (12) | −0.0006 (10) | 0.0062 (9) | −0.0035 (11) |
C20 | 0.0283 (11) | 0.0272 (12) | 0.0240 (10) | 0.0016 (9) | 0.0119 (9) | −0.0038 (10) |
C21 | 0.0473 (15) | 0.056 (2) | 0.0393 (15) | −0.0026 (14) | 0.0255 (13) | 0.0137 (14) |
S—C1 | 1.752 (2) | C10—H10 | 0.9300 |
S—C21 | 1.795 (3) | C11—C12 | 1.384 (3) |
F—C12 | 1.362 (2) | C11—H11 | 0.9300 |
O—C7 | 1.368 (3) | C12—C13 | 1.374 (3) |
O—C8 | 1.387 (3) | C13—C14 | 1.380 (3) |
C1—C8 | 1.353 (3) | C13—H13 | 0.9300 |
C1—C2 | 1.441 (3) | C14—H14 | 0.9300 |
C2—C7 | 1.381 (3) | C15—C20 | 1.396 (3) |
C2—C3 | 1.398 (3) | C15—C16 | 1.397 (3) |
C3—C4 | 1.393 (3) | C16—C17 | 1.393 (3) |
C3—H3 | 0.9300 | C16—H16 | 0.9300 |
C4—C5 | 1.411 (3) | C17—C18 | 1.375 (4) |
C4—C15 | 1.493 (3) | C17—H17 | 0.9300 |
C5—C6 | 1.374 (3) | C18—C19 | 1.384 (4) |
C5—H5 | 0.9300 | C18—H18 | 0.9300 |
C6—C7 | 1.388 (3) | C19—C20 | 1.389 (3) |
C6—H6 | 0.9300 | C19—H19 | 0.9300 |
C8—C9 | 1.467 (3) | C20—H20 | 0.9300 |
C9—C10 | 1.391 (3) | C21—H21A | 0.9600 |
C9—C14 | 1.403 (3) | C21—H21B | 0.9600 |
C10—C11 | 1.378 (3) | C21—H21C | 0.9600 |
C1—S—C21 | 100.97 (13) | C12—C11—H11 | 121.0 |
C7—O—C8 | 106.04 (16) | F—C12—C13 | 118.3 (2) |
C8—C1—C2 | 106.57 (18) | F—C12—C11 | 118.9 (2) |
C8—C1—S | 128.05 (16) | C13—C12—C11 | 122.7 (2) |
C2—C1—S | 125.37 (15) | C12—C13—C14 | 118.6 (2) |
C7—C2—C3 | 119.98 (19) | C12—C13—H13 | 120.7 |
C7—C2—C1 | 105.69 (18) | C14—C13—H13 | 120.7 |
C3—C2—C1 | 134.31 (19) | C13—C14—C9 | 120.4 (2) |
C4—C3—C2 | 118.64 (19) | C13—C14—H14 | 119.8 |
C4—C3—H3 | 120.7 | C9—C14—H14 | 119.8 |
C2—C3—H3 | 120.7 | C20—C15—C16 | 118.23 (19) |
C3—C4—C5 | 119.2 (2) | C20—C15—C4 | 120.47 (19) |
C3—C4—C15 | 119.99 (19) | C16—C15—C4 | 121.28 (19) |
C5—C4—C15 | 120.80 (19) | C17—C16—C15 | 120.5 (2) |
C6—C5—C4 | 122.8 (2) | C17—C16—H16 | 119.7 |
C6—C5—H5 | 118.6 | C15—C16—H16 | 119.7 |
C4—C5—H5 | 118.6 | C18—C17—C16 | 120.4 (2) |
C5—C6—C7 | 116.5 (2) | C18—C17—H17 | 119.8 |
C5—C6—H6 | 121.8 | C16—C17—H17 | 119.8 |
C7—C6—H6 | 121.8 | C17—C18—C19 | 120.0 (2) |
O—C7—C2 | 110.71 (18) | C17—C18—H18 | 120.0 |
O—C7—C6 | 126.35 (19) | C19—C18—H18 | 120.0 |
C2—C7—C6 | 122.9 (2) | C18—C19—C20 | 120.0 (2) |
C1—C8—O | 110.98 (18) | C18—C19—H19 | 120.0 |
C1—C8—C9 | 134.7 (2) | C20—C19—H19 | 120.0 |
O—C8—C9 | 114.35 (18) | C19—C20—C15 | 120.9 (2) |
C10—C9—C14 | 118.9 (2) | C19—C20—H20 | 119.5 |
C10—C9—C8 | 120.0 (2) | C15—C20—H20 | 119.5 |
C14—C9—C8 | 121.05 (19) | S—C21—H21A | 109.5 |
C11—C10—C9 | 121.3 (2) | S—C21—H21B | 109.5 |
C11—C10—H10 | 119.3 | H21A—C21—H21B | 109.5 |
C9—C10—H10 | 119.3 | S—C21—H21C | 109.5 |
C10—C11—C12 | 118.0 (2) | H21A—C21—H21C | 109.5 |
C10—C11—H11 | 121.0 | H21B—C21—H21C | 109.5 |
C21—S—C1—C8 | −113.4 (2) | C1—C8—C9—C10 | 155.3 (3) |
C21—S—C1—C2 | 68.3 (2) | O—C8—C9—C10 | −23.3 (3) |
C8—C1—C2—C7 | −0.2 (3) | C1—C8—C9—C14 | −24.7 (4) |
S—C1—C2—C7 | 178.46 (18) | O—C8—C9—C14 | 156.6 (2) |
C8—C1—C2—C3 | 178.5 (3) | C14—C9—C10—C11 | 0.8 (4) |
S—C1—C2—C3 | −2.9 (4) | C8—C9—C10—C11 | −179.3 (2) |
C7—C2—C3—C4 | 0.4 (3) | C9—C10—C11—C12 | −0.9 (4) |
C1—C2—C3—C4 | −178.1 (3) | C10—C11—C12—F | −179.8 (2) |
C2—C3—C4—C5 | −1.6 (3) | C10—C11—C12—C13 | 0.2 (4) |
C2—C3—C4—C15 | 177.4 (2) | F—C12—C13—C14 | −179.3 (2) |
C3—C4—C5—C6 | 1.3 (4) | C11—C12—C13—C14 | 0.8 (4) |
C15—C4—C5—C6 | −177.7 (2) | C12—C13—C14—C9 | −0.9 (4) |
C4—C5—C6—C7 | 0.2 (4) | C10—C9—C14—C13 | 0.2 (4) |
C8—O—C7—C2 | 0.2 (3) | C8—C9—C14—C13 | −179.8 (2) |
C8—O—C7—C6 | −179.9 (2) | C3—C4—C15—C20 | −150.9 (2) |
C3—C2—C7—O | −178.9 (2) | C5—C4—C15—C20 | 28.0 (4) |
C1—C2—C7—O | 0.0 (3) | C3—C4—C15—C16 | 27.4 (3) |
C3—C2—C7—C6 | 1.2 (4) | C5—C4—C15—C16 | −153.6 (2) |
C1—C2—C7—C6 | −180.0 (2) | C20—C15—C16—C17 | 1.4 (4) |
C5—C6—C7—O | 178.6 (2) | C4—C15—C16—C17 | −177.0 (2) |
C5—C6—C7—C2 | −1.5 (4) | C15—C16—C17—C18 | −0.2 (4) |
C2—C1—C8—O | 0.3 (3) | C16—C17—C18—C19 | −1.6 (4) |
S—C1—C8—O | −178.31 (17) | C17—C18—C19—C20 | 2.3 (4) |
C2—C1—C8—C9 | −178.4 (3) | C18—C19—C20—C15 | −1.2 (4) |
S—C1—C8—C9 | 3.0 (4) | C16—C15—C20—C19 | −0.7 (4) |
C7—O—C8—C1 | −0.3 (3) | C4—C15—C20—C19 | 177.7 (2) |
C7—O—C8—C9 | 178.73 (19) |
Experimental details
Crystal data | |
Chemical formula | C21H15FOS |
Mr | 334.39 |
Crystal system, space group | Monoclinic, P21 |
Temperature (K) | 173 |
a, b, c (Å) | 10.621 (6), 7.192 (4), 11.642 (6) |
β (°) | 116.076 (5) |
V (Å3) | 798.7 (8) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.22 |
Crystal size (mm) | 0.50 × 0.42 × 0.33 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.893, 0.932 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7602, 3339, 3147 |
Rint | 0.095 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.050, 0.133, 1.04 |
No. of reflections | 3339 |
No. of parameters | 218 |
No. of restraints | 1 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.41, −0.44 |
Absolute structure | Flack (1983), 1362 Friedel pairs |
Absolute structure parameter | 0.00 (9) |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SAINT, SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 1998), SHELXL97.
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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.
Molecules containing the benzofuran skeleton constitute a major group of naturally-occurring compounds that are of a remarkable interest because of their biological activities (Akgul & Anil, 2003; Soekamto et al., 2003; von Reuss & König, 2004). As a part of our continuing studies of the effect of side chain substituents on the solid state structures of 2,5-diaryl-3-methylsulfanyl-1-benzofuran analogues (Choi, Seo et al., 2006; Choi, Woo et al., 2006), we report the crystal structure of the title compound (Fig. 1).
The benzofuran unit is essentially planar, with a mean deviation of 0.011 (2) Å from the least-squares plane defined by the nine constituent atoms. The 4-fluorophenyl ring is rotated out of the benzofuran plane, with a dihedral angle of 24.3 (1)°. The dihedral angle between the phenyl ring and the benzofuran plane is 28.3 (1)°. The molecular packing (Fig. 2) is stabilized by two aromatic π···π interactions between the furan and the benzene rings of adjacent benzofuran molecules, with a Cg1···Cg2i and a Cg2···Cg1i distances of 3.909 (4) and 4.028 (4) Å, respectively (Cg1 and Cg2 are the centroids of the C1/C2/C7/O/C8 furan ring and the C2–C7 benzene ring, respectively, symmetry code i: - x + 1, y - 1/2, - z + 1).