organic compounds
3-(4-Fluorophenylsulfonyl)-2-methylnaphtho[1,2-b]furan
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, C19H13FO3S, the 4-fluorophenyl ring makes a dihedral angle of 68.59 (5)° with the mean plane of the naphthofuran fragment. In the crystal, molecules are linked by weak intermolecular C—H⋯O, C—H⋯F and C—H⋯π interactions. The also exhibits aromatic π–π interactions between the central benzene and the outer benzene rings of neighbouring molecules [centroid–centroid distance = 3.650 (3) Å].
Related literature
For the pharmacological activity of naphthofuran compounds, see: Einhorn et al. (1984); Hranjec et al. (2003); Mahadevan & Vaidya (2003). For our previous structural studies of related 3-arylsulfonyl-2-methylnaphtho[1,2-b]furan derivatives, see: Choi et al. (2008a,b).
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/S1600536810048361/sj5062sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810048361/sj5062Isup2.hkl
77% 3-chloroperoxybenzoic acid (493 mg, 2.2 mmol) was added in small portions to a stirred solution of 3-(4-fluorophenylsulfanyl)-2-methylnaphtho [1,2-b]furan (339 mg, 1.1 mmol) in dichloromethane (30 mL) at 273 K. After being stirred at room temperature for 8h, the mixture was washed with saturated sodium bicarbonate solution and the organic layer was separated, dried over magnesium sulfate, filtered and concentrated at reduced pressure. The residue was purified by
(hexane-ethyl acetate, 4:1 v/v) to afford the title compound as a colorless solid [yield 71%, m.p. 439-440 K; Rf = 0.55 (hexane-ethyl acetate, 4:1 v/v)]. Single crystals suitable for X-ray diffraction were obtained by slow evaporation of a solution of the title compound in acetone at room temperature.All H atoms were positioned geometrically and refined using a riding model, with C–H = 0.95 Å for aryl and 0.98 Å for methyl H atoms. Uiso(H) = 1.2Ueq(C) for aryl and 1.5Ueq(C) for methyl H atoms.
Many compounds containing a naphthofuran moiety show diverse pharmacological properties such as antibacterial, antitumor and anthelmintic activities (Einhorn et al., 1984, Hranjec et al., 2003, Mahadevan & Vaidya, 2003). As a part of our ongoing studies of the substituent effect on the solid state structures of 3-arylsulfonyl-2-methylnaphtho[1,2-b]furan analogues (Choi et al., 2008a,b), we report herein on the
of the title compound.In the title molecule (Fig. 1), the naphthofuran unit is essentially planar, with a mean deviation of 0.008 (2) Å from the least-squares plane defined by the thirteen constituent atoms. The dihedral angle formed by the mean plane of the naphthofuran ring and the 4-fluorophenyl ring is 68.59 (5)°. The crystal packing (Fig. 2) is stabilized by weak intermolecular C–H···O and C–H···F hydrogen bonds; the first one between a benzene H atom and the oxygen of the O═S═O unit (Table 1; C8–H8···O3i), and the second one between the 4–fluorophenyl H atom and the oxygen of the O═S═O unit (Table 1; C16–H16···O3iii), and the third one between the 4-fluorophenyl H atom and the fluorine (Table 1; C15–H15···F1ii). The crystal packing (Fig. 3) is also exhibits an intermolecular C–H..π interaction between a benzene H atom and the 4-fluorophenyl ring (Table 1; C4–H4···Cg1iv, Cg1 is the centroid of the C14-C19 4-fluorophenyl ring). The crystal packing (Fig. 3) is further stabilized by an aromatic π–π interaction between the central benzene and the outer benzene rings of neighbouring molecules. The Cg2···Cg3viii distance is 3.650 (3) Å (Cg2 and Cg3 are the centroids of the C2/C3/C4/C5/C10/C11 benzene ring and the C5-C10 benzene ring, respectively).
For the pharmacological activity of naphthofuran compounds, see: Einhorn et al. (1984); Hranjec et al. (2003); Mahadevan & Vaidya (2003). For our previous structural studies of related 3-arylsulfonyl-2-methylnaphtho[1,2-b] furan derivatives, see: Choi et al. (2008a,b).
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 (Farrugia, 1997) and DIAMOND (Brandenburg, 1998); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).C19H13FO3S | F(000) = 704 |
Mr = 340.35 | Dx = 1.452 Mg m−3 |
Orthorhombic, Pna21 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2c -2n | Cell parameters from 3161 reflections |
a = 8.1456 (3) Å | θ = 2.3–27.5° |
b = 18.4472 (5) Å | µ = 0.23 mm−1 |
c = 10.3618 (4) Å | T = 173 K |
V = 1557.00 (9) Å3 | Block, colourless |
Z = 4 | 0.30 × 0.25 × 0.12 mm |
Bruker SMART APEXII CCD diffractometer | 2719 independent reflections |
Radiation source: rotating anode | 2502 reflections with I > 2σ(I) |
Graphite multilayer monochromator | Rint = 0.026 |
Detector resolution: 10.0 pixels mm-1 | θmax = 27.5°, θmin = 2.2° |
φ and ω scans | h = −10→4 |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | k = −23→22 |
Tmin = 0.664, Tmax = 0.746 | l = −10→13 |
7603 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)] = 0.030 | H-atom parameters constrained |
wR(F2) = 0.075 | w = 1/[σ2(Fo2) + (0.0405P)2 + 0.1905P] where P = (Fo2 + 2Fc2)/3 |
S = 1.05 | (Δ/σ)max = 0.001 |
2719 reflections | Δρmax = 0.25 e Å−3 |
218 parameters | Δρmin = −0.23 e Å−3 |
1 restraint | Absolute structure: Flack (1983), 830 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.09 (7) |
C19H13FO3S | V = 1557.00 (9) Å3 |
Mr = 340.35 | Z = 4 |
Orthorhombic, Pna21 | Mo Kα radiation |
a = 8.1456 (3) Å | µ = 0.23 mm−1 |
b = 18.4472 (5) Å | T = 173 K |
c = 10.3618 (4) Å | 0.30 × 0.25 × 0.12 mm |
Bruker SMART APEXII CCD diffractometer | 2719 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2009) | 2502 reflections with I > 2σ(I) |
Tmin = 0.664, Tmax = 0.746 | Rint = 0.026 |
7603 measured reflections |
R[F2 > 2σ(F2)] = 0.030 | H-atom parameters constrained |
wR(F2) = 0.075 | Δρmax = 0.25 e Å−3 |
S = 1.05 | Δρmin = −0.23 e Å−3 |
2719 reflections | Absolute structure: Flack (1983), 830 Friedel pairs |
218 parameters | Absolute structure parameter: 0.09 (7) |
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 | ||
S1 | 0.52554 (5) | 0.41581 (2) | 0.52995 (6) | 0.02619 (12) | |
F1 | 1.07897 (19) | 0.56345 (10) | 0.29185 (19) | 0.0694 (5) | |
O1 | 0.46264 (16) | 0.22234 (6) | 0.38327 (16) | 0.0295 (3) | |
O2 | 0.57654 (19) | 0.39444 (8) | 0.65655 (16) | 0.0367 (4) | |
O3 | 0.38342 (15) | 0.46132 (7) | 0.51578 (19) | 0.0351 (4) | |
C1 | 0.4869 (2) | 0.33848 (9) | 0.4394 (2) | 0.0256 (4) | |
C2 | 0.3939 (2) | 0.33602 (9) | 0.3211 (2) | 0.0262 (4) | |
C3 | 0.3171 (2) | 0.38737 (10) | 0.2398 (2) | 0.0294 (5) | |
H3 | 0.3221 | 0.4377 | 0.2585 | 0.035* | |
C4 | 0.2358 (2) | 0.36252 (10) | 0.1336 (2) | 0.0321 (5) | |
H4 | 0.1835 | 0.3965 | 0.0784 | 0.039* | |
C5 | 0.2264 (2) | 0.28691 (11) | 0.1021 (2) | 0.0316 (5) | |
C6 | 0.1433 (3) | 0.26263 (12) | −0.0094 (2) | 0.0399 (6) | |
H6 | 0.0923 | 0.2967 | −0.0653 | 0.048* | |
C7 | 0.1359 (3) | 0.18989 (13) | −0.0374 (3) | 0.0475 (6) | |
H7 | 0.0807 | 0.1740 | −0.1130 | 0.057* | |
C8 | 0.2087 (3) | 0.13917 (11) | 0.0444 (3) | 0.0447 (6) | |
H8 | 0.2016 | 0.0891 | 0.0240 | 0.054* | |
C9 | 0.2901 (3) | 0.16034 (10) | 0.1534 (3) | 0.0371 (5) | |
H9 | 0.3390 | 0.1253 | 0.2084 | 0.044* | |
C10 | 0.3008 (2) | 0.23490 (9) | 0.1835 (2) | 0.0294 (5) | |
C11 | 0.3834 (2) | 0.26340 (9) | 0.2913 (2) | 0.0276 (4) | |
C12 | 0.5250 (2) | 0.26895 (10) | 0.4729 (2) | 0.0286 (4) | |
C13 | 0.6087 (3) | 0.23448 (11) | 0.5836 (3) | 0.0382 (5) | |
H13A | 0.6786 | 0.1949 | 0.5524 | 0.057* | |
H13B | 0.5266 | 0.2151 | 0.6435 | 0.057* | |
H13C | 0.6764 | 0.2706 | 0.6281 | 0.057* | |
C14 | 0.6915 (2) | 0.45978 (9) | 0.4545 (2) | 0.0251 (4) | |
C15 | 0.8504 (2) | 0.44194 (10) | 0.4931 (2) | 0.0304 (5) | |
H15 | 0.8679 | 0.4059 | 0.5572 | 0.036* | |
C16 | 0.9823 (3) | 0.47724 (12) | 0.4372 (3) | 0.0386 (5) | |
H16 | 1.0917 | 0.4664 | 0.4624 | 0.046* | |
C17 | 0.9511 (3) | 0.52791 (13) | 0.3451 (3) | 0.0423 (6) | |
C18 | 0.7955 (3) | 0.54585 (13) | 0.3041 (3) | 0.0455 (6) | |
H18 | 0.7794 | 0.5813 | 0.2388 | 0.055* | |
C19 | 0.6633 (3) | 0.51109 (11) | 0.3605 (2) | 0.0359 (5) | |
H19 | 0.5544 | 0.5224 | 0.3346 | 0.043* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0226 (2) | 0.02804 (19) | 0.0279 (3) | 0.00002 (15) | 0.0020 (3) | −0.0023 (2) |
F1 | 0.0527 (9) | 0.1072 (12) | 0.0483 (10) | −0.0428 (9) | 0.0082 (9) | 0.0102 (10) |
O1 | 0.0281 (7) | 0.0237 (6) | 0.0368 (9) | 0.0001 (5) | 0.0003 (6) | 0.0019 (6) |
O2 | 0.0381 (8) | 0.0429 (7) | 0.0291 (9) | −0.0014 (6) | 0.0014 (8) | 0.0032 (7) |
O3 | 0.0239 (6) | 0.0338 (6) | 0.0477 (11) | 0.0044 (5) | 0.0033 (8) | −0.0078 (8) |
C1 | 0.0223 (8) | 0.0251 (8) | 0.0293 (12) | −0.0009 (6) | 0.0016 (9) | −0.0008 (9) |
C2 | 0.0229 (9) | 0.0256 (8) | 0.0301 (12) | −0.0012 (7) | 0.0028 (9) | −0.0025 (8) |
C3 | 0.0295 (10) | 0.0241 (8) | 0.0344 (13) | −0.0008 (7) | 0.0016 (9) | −0.0006 (8) |
C4 | 0.0329 (10) | 0.0325 (8) | 0.0310 (13) | 0.0016 (8) | 0.0001 (10) | 0.0035 (9) |
C5 | 0.0257 (10) | 0.0358 (10) | 0.0332 (12) | −0.0049 (8) | 0.0040 (9) | −0.0025 (9) |
C6 | 0.0381 (11) | 0.0440 (12) | 0.0375 (14) | −0.0043 (9) | 0.0003 (10) | −0.0036 (10) |
C7 | 0.0465 (13) | 0.0545 (14) | 0.0416 (15) | −0.0139 (10) | 0.0016 (13) | −0.0153 (12) |
C8 | 0.0481 (12) | 0.0354 (9) | 0.0506 (17) | −0.0112 (9) | 0.0099 (14) | −0.0125 (12) |
C9 | 0.0361 (11) | 0.0291 (9) | 0.0459 (15) | −0.0062 (8) | 0.0074 (11) | −0.0035 (10) |
C10 | 0.0263 (9) | 0.0275 (9) | 0.0346 (12) | −0.0032 (7) | 0.0077 (9) | −0.0040 (8) |
C11 | 0.0239 (9) | 0.0252 (8) | 0.0338 (11) | −0.0008 (7) | 0.0039 (9) | 0.0013 (8) |
C12 | 0.0227 (9) | 0.0297 (9) | 0.0335 (12) | −0.0007 (7) | 0.0036 (9) | 0.0019 (9) |
C13 | 0.0352 (11) | 0.0347 (10) | 0.0448 (15) | 0.0048 (9) | −0.0024 (11) | 0.0075 (10) |
C14 | 0.0219 (8) | 0.0271 (8) | 0.0263 (11) | −0.0021 (7) | 0.0002 (8) | −0.0029 (8) |
C15 | 0.0263 (9) | 0.0306 (9) | 0.0343 (13) | 0.0027 (7) | −0.0029 (8) | −0.0025 (8) |
C16 | 0.0252 (9) | 0.0505 (12) | 0.0400 (15) | −0.0028 (8) | −0.0008 (10) | −0.0093 (12) |
C17 | 0.0389 (12) | 0.0574 (13) | 0.0307 (14) | −0.0206 (10) | 0.0064 (11) | −0.0057 (12) |
C18 | 0.0508 (14) | 0.0525 (12) | 0.0333 (14) | −0.0185 (11) | −0.0082 (12) | 0.0124 (12) |
C19 | 0.0355 (11) | 0.0384 (9) | 0.0339 (13) | −0.0074 (8) | −0.0086 (10) | 0.0057 (10) |
S1—O2 | 1.4313 (18) | C7—H7 | 0.9500 |
S1—O3 | 1.4375 (13) | C8—C9 | 1.366 (4) |
S1—C1 | 1.736 (2) | C8—H8 | 0.9500 |
S1—C14 | 1.7596 (19) | C9—C10 | 1.413 (2) |
F1—C17 | 1.348 (2) | C9—H9 | 0.9500 |
O1—C12 | 1.364 (3) | C10—C11 | 1.406 (3) |
O1—C11 | 1.378 (3) | C12—C13 | 1.478 (3) |
C1—C12 | 1.365 (3) | C13—H13A | 0.9800 |
C1—C2 | 1.442 (3) | C13—H13B | 0.9800 |
C2—C11 | 1.377 (2) | C13—H13C | 0.9800 |
C2—C3 | 1.414 (3) | C14—C19 | 1.378 (3) |
C3—C4 | 1.364 (3) | C14—C15 | 1.394 (3) |
C3—H3 | 0.9500 | C15—C16 | 1.384 (3) |
C4—C5 | 1.434 (3) | C15—H15 | 0.9500 |
C4—H4 | 0.9500 | C16—C17 | 1.360 (4) |
C5—C6 | 1.412 (3) | C16—H16 | 0.9500 |
C5—C10 | 1.414 (3) | C17—C18 | 1.377 (3) |
C6—C7 | 1.374 (3) | C18—C19 | 1.382 (3) |
C6—H6 | 0.9500 | C18—H18 | 0.9500 |
C7—C8 | 1.395 (4) | C19—H19 | 0.9500 |
O2—S1—O3 | 119.22 (11) | C11—C10—C9 | 124.7 (2) |
O2—S1—C1 | 108.75 (9) | C11—C10—C5 | 115.16 (16) |
O3—S1—C1 | 106.18 (9) | C9—C10—C5 | 120.2 (2) |
O2—S1—C14 | 108.11 (10) | C2—C11—O1 | 110.52 (19) |
O3—S1—C14 | 107.71 (9) | C2—C11—C10 | 124.85 (19) |
C1—S1—C14 | 106.15 (10) | O1—C11—C10 | 124.62 (15) |
C12—O1—C11 | 107.39 (14) | O1—C12—C1 | 109.55 (19) |
C12—C1—C2 | 107.83 (17) | O1—C12—C13 | 115.41 (16) |
C12—C1—S1 | 126.42 (18) | C1—C12—C13 | 135.0 (2) |
C2—C1—S1 | 125.49 (14) | C12—C13—H13A | 109.5 |
C11—C2—C3 | 119.37 (19) | C12—C13—H13B | 109.5 |
C11—C2—C1 | 104.71 (18) | H13A—C13—H13B | 109.5 |
C3—C2—C1 | 135.91 (17) | C12—C13—H13C | 109.5 |
C4—C3—C2 | 118.08 (16) | H13A—C13—H13C | 109.5 |
C4—C3—H3 | 121.0 | H13B—C13—H13C | 109.5 |
C2—C3—H3 | 121.0 | C19—C14—C15 | 121.31 (19) |
C3—C4—C5 | 122.4 (2) | C19—C14—S1 | 120.18 (15) |
C3—C4—H4 | 118.8 | C15—C14—S1 | 118.50 (16) |
C5—C4—H4 | 118.8 | C16—C15—C14 | 119.3 (2) |
C6—C5—C10 | 118.56 (18) | C16—C15—H15 | 120.3 |
C6—C5—C4 | 121.3 (2) | C14—C15—H15 | 120.3 |
C10—C5—C4 | 120.1 (2) | C17—C16—C15 | 118.2 (2) |
C7—C6—C5 | 120.2 (2) | C17—C16—H16 | 120.9 |
C7—C6—H6 | 119.9 | C15—C16—H16 | 120.9 |
C5—C6—H6 | 119.9 | F1—C17—C16 | 118.5 (2) |
C6—C7—C8 | 120.6 (2) | F1—C17—C18 | 117.9 (2) |
C6—C7—H7 | 119.7 | C16—C17—C18 | 123.6 (2) |
C8—C7—H7 | 119.7 | C17—C18—C19 | 118.4 (2) |
C9—C8—C7 | 121.1 (2) | C17—C18—H18 | 120.8 |
C9—C8—H8 | 119.4 | C19—C18—H18 | 120.8 |
C7—C8—H8 | 119.4 | C14—C19—C18 | 119.2 (2) |
C8—C9—C10 | 119.4 (2) | C14—C19—H19 | 120.4 |
C8—C9—H9 | 120.3 | C18—C19—H19 | 120.4 |
C10—C9—H9 | 120.3 | ||
O2—S1—C1—C12 | −10.6 (2) | C1—C2—C11—C10 | 179.16 (19) |
O3—S1—C1—C12 | −140.05 (17) | C12—O1—C11—C2 | −0.1 (2) |
C14—S1—C1—C12 | 105.50 (18) | C12—O1—C11—C10 | −179.04 (19) |
O2—S1—C1—C2 | 162.76 (16) | C9—C10—C11—C2 | −179.9 (2) |
O3—S1—C1—C2 | 33.3 (2) | C5—C10—C11—C2 | 0.6 (3) |
C14—S1—C1—C2 | −81.12 (18) | C9—C10—C11—O1 | −1.1 (3) |
C12—C1—C2—C11 | −0.3 (2) | C5—C10—C11—O1 | 179.34 (18) |
S1—C1—C2—C11 | −174.67 (15) | C11—O1—C12—C1 | −0.1 (2) |
C12—C1—C2—C3 | 178.4 (2) | C11—O1—C12—C13 | 177.31 (18) |
S1—C1—C2—C3 | 4.0 (3) | C2—C1—C12—O1 | 0.2 (2) |
C11—C2—C3—C4 | −0.4 (3) | S1—C1—C12—O1 | 174.55 (14) |
C1—C2—C3—C4 | −178.9 (2) | C2—C1—C12—C13 | −176.4 (2) |
C2—C3—C4—C5 | −0.2 (3) | S1—C1—C12—C13 | −2.1 (3) |
C3—C4—C5—C6 | −179.1 (2) | O2—S1—C14—C19 | −152.63 (17) |
C3—C4—C5—C10 | 1.0 (3) | O3—S1—C14—C19 | −22.6 (2) |
C10—C5—C6—C7 | −0.1 (3) | C1—S1—C14—C19 | 90.83 (18) |
C4—C5—C6—C7 | −180.0 (2) | O2—S1—C14—C15 | 26.78 (19) |
C5—C6—C7—C8 | 0.6 (4) | O3—S1—C14—C15 | 156.85 (16) |
C6—C7—C8—C9 | −0.5 (4) | C1—S1—C14—C15 | −89.76 (18) |
C7—C8—C9—C10 | −0.1 (3) | C19—C14—C15—C16 | 1.0 (3) |
C8—C9—C10—C11 | −178.9 (2) | S1—C14—C15—C16 | −178.42 (17) |
C8—C9—C10—C5 | 0.7 (3) | C14—C15—C16—C17 | −0.6 (3) |
C6—C5—C10—C11 | 179.01 (19) | C15—C16—C17—F1 | 178.8 (2) |
C4—C5—C10—C11 | −1.1 (3) | C15—C16—C17—C18 | −0.2 (4) |
C6—C5—C10—C9 | −0.6 (3) | F1—C17—C18—C19 | −178.3 (2) |
C4—C5—C10—C9 | 179.30 (19) | C16—C17—C18—C19 | 0.7 (4) |
C3—C2—C11—O1 | −178.73 (17) | C15—C14—C19—C18 | −0.5 (3) |
C1—C2—C11—O1 | 0.2 (2) | S1—C14—C19—C18 | 178.88 (18) |
C3—C2—C11—C10 | 0.2 (3) | C17—C18—C19—C14 | −0.3 (4) |
Cg1 is the centroid of the C14–C19 4-fluorophenyl ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
C8—H8···O3i | 0.95 | 2.46 | 3.379 (2) | 163 |
C15—H15···F1ii | 0.95 | 2.53 | 3.150 (3) | 123 |
C16—H16···O3iii | 0.95 | 2.44 | 3.380 (2) | 170 |
C4—H4···Cg1iv | 0.95 | 2.75 | 3.625 (3) | 154 |
Symmetry codes: (i) −x+1/2, y−1/2, z−1/2; (ii) −x+2, −y+1, z+1/2; (iii) x+1, y, z; (iv) −x+1, −y+1, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | C19H13FO3S |
Mr | 340.35 |
Crystal system, space group | Orthorhombic, Pna21 |
Temperature (K) | 173 |
a, b, c (Å) | 8.1456 (3), 18.4472 (5), 10.3618 (4) |
V (Å3) | 1557.00 (9) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.23 |
Crystal size (mm) | 0.30 × 0.25 × 0.12 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2009) |
Tmin, Tmax | 0.664, 0.746 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7603, 2719, 2502 |
Rint | 0.026 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.030, 0.075, 1.05 |
No. of reflections | 2719 |
No. of parameters | 218 |
No. of restraints | 1 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.25, −0.23 |
Absolute structure | Flack (1983), 830 Friedel pairs |
Absolute structure parameter | 0.09 (7) |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997) and DIAMOND (Brandenburg, 1998).
Cg1 is the centroid of the C14–C19 4-fluorophenyl ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
C8—H8···O3i | 0.95 | 2.46 | 3.379 (2) | 163.3 |
C15—H15···F1ii | 0.95 | 2.53 | 3.150 (3) | 122.7 |
C16—H16···O3iii | 0.95 | 2.44 | 3.380 (2) | 169.5 |
C4—H4···Cg1iv | 0.95 | 2.75 | 3.625 (3) | 154.3 |
Symmetry codes: (i) −x+1/2, y−1/2, z−1/2; (ii) −x+2, −y+1, z+1/2; (iii) x+1, y, z; (iv) −x+1, −y+1, z−1/2. |
Acknowledgements
This work was supported by the Blue-Bio Industry RIC at Dongeui University as an RIC programme under the Ministry of Knowledge Economy and Busan City.
References
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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.
Many compounds containing a naphthofuran moiety show diverse pharmacological properties such as antibacterial, antitumor and anthelmintic activities (Einhorn et al., 1984, Hranjec et al., 2003, Mahadevan & Vaidya, 2003). As a part of our ongoing studies of the substituent effect on the solid state structures of 3-arylsulfonyl-2-methylnaphtho[1,2-b]furan analogues (Choi et al., 2008a,b), we report herein on the crystal structure of the title compound.
In the title molecule (Fig. 1), the naphthofuran unit is essentially planar, with a mean deviation of 0.008 (2) Å from the least-squares plane defined by the thirteen constituent atoms. The dihedral angle formed by the mean plane of the naphthofuran ring and the 4-fluorophenyl ring is 68.59 (5)°. The crystal packing (Fig. 2) is stabilized by weak intermolecular C–H···O and C–H···F hydrogen bonds; the first one between a benzene H atom and the oxygen of the O═S═O unit (Table 1; C8–H8···O3i), and the second one between the 4–fluorophenyl H atom and the oxygen of the O═S═O unit (Table 1; C16–H16···O3iii), and the third one between the 4-fluorophenyl H atom and the fluorine (Table 1; C15–H15···F1ii). The crystal packing (Fig. 3) is also exhibits an intermolecular C–H..π interaction between a benzene H atom and the 4-fluorophenyl ring (Table 1; C4–H4···Cg1iv, Cg1 is the centroid of the C14-C19 4-fluorophenyl ring). The crystal packing (Fig. 3) is further stabilized by an aromatic π–π interaction between the central benzene and the outer benzene rings of neighbouring molecules. The Cg2···Cg3viii distance is 3.650 (3) Å (Cg2 and Cg3 are the centroids of the C2/C3/C4/C5/C10/C11 benzene ring and the C5-C10 benzene ring, respectively).