5-Cyclo­hexyl-3-(2-fluoro­phenyl­sulfin­yl)-2-methyl-1-benzo­furan

Choi, H.D.; Seo, P.J.; Lee, U.

doi:10.1107/S1600536813011902

5-Cyclohexyl-3-(2-fluorophenylsulfinyl)-2-methyl-1-benzofuran

In the title compound, C₂₁H₂₁FO₂S, the cyclohexyl ring adopts a chair conformation. The 2-fluorophenyl ring makes a dihedral angle of 88.47 (4)° with the mean plane [r.m.s. deviation = 0.013 (1) Å] of the benzofuran fragment. In the crystal, molecules are linked by weak C—H

O and C—H

π interactions, forming chains propagating along [100]. The crystal structure also exhibits slipped π–π interactions between the furan rings of neighboring molecules [centroid-to-centroid distance = 3.397 (2) Å, interplanar distance = 3.346 (2) Å and slippage = 0.586 (2) Å].

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Supporting information

	Crystallographic Information File (CIF) https://doi.org/10.1107/S1600536813011902/zl2547sup1.cif Contains datablocks global, I
	Structure factor file (CIF format) https://doi.org/10.1107/S1600536813011902/zl2547Isup2.hkl Contains datablock I
	Chemical Markup Language (CML) file https://doi.org/10.1107/S1600536813011902/zl2547Isup3.cml Supplementary material

CCDC reference: 955046

checkCIF report

Key indicators

Single-crystal X-ray study
T = 173 K
Mean (C-C) = 0.003 Å
R factor = 0.044
wR factor = 0.116
Data-to-parameter ratio = 19.6

checkCIF/PLATON results

No syntax errors found



Alert level C
PLAT906_ALERT_3_C Large K value in the Analysis of Variance ......      2.059

Alert level G
PLAT005_ALERT_5_G No _iucr_refine_instructions_details  in the CIF          ?
PLAT154_ALERT_1_G The su's on the Cell Angles are Equal ..........    0.00100 Deg.
PLAT912_ALERT_4_G Missing # of FCF Reflections Above STh/L=  0.600         13

   0 ALERT level A = Most likely a serious problem - resolve or explain
   0 ALERT level B = A potentially serious problem, consider carefully
   1 ALERT level C = Check. Ensure it is not caused by an omission or oversight
   3 ALERT level G = General information/check it is not something unexpected

   1 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
   0 ALERT type 2 Indicator that the structure model may be wrong or deficient
   1 ALERT type 3 Indicator that the structure quality may be low
   1 ALERT type 4 Improvement, methodology, query or suggestion
   1 ALERT type 5 Informative message, check

Comment top

As a part of our continuing study of 5-cyclohexyl-2-methyl-1-benzofuran derivatives containing 4-fluorophenylsulfinyl (Choi et al., 2011) and 4-bromophenylsulfinyl (Choi et al., 2012) substituents in 3-position, we report herein the crystal structure of the title compound.

In the title molecule (Fig. 1), the benzofuran unit is essentially planar, with a mean deviation of 0.013 (1) Å from the least-squares plane defined by the nine constituent atoms. The cyclohexyl ring has the chair form. The dihedral angle formed by the 2-fluorophenyl ring and the mean plane of the benzofuran fragment is 88.47 (4)°. In the crystal structure (Figs. 2 and 3), molecules are connected by weak C—H···O and C—H···π interactions (Table 1, Cg2 is the centroid of the C2–C7 benzene ring). The crystal packing (Fig. 3) also exhibits slipped π–π interactions between the furan rings of neighbouring molecules, with a Cg1···Cg1^iv distance of 3.397 (2) Å and an interplanar distance of 3.346 (2) Å resulting in a slippage of 0.586 (2) Å (Cg1 is the centroid of the C1/C2/C7/O1/C8 furan ring).

Related literature top

For background information and the crystal structures of related compounds, see: Choi et al. (2011, 2012).

Experimental top

3-Chloroperoxybenzoic acid (77%, 224 mg, 1.0 mmol) was added in small portions to a stirred solution of 5-cyclohexyl-3-(2-fluorophenylsulfanyl)-2-methyl-1-benzofuran (306 mg, 0.9 mmol) in dichloromethane (40 ml) at 273 K. After being stirred at room temperature for 3 h, 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 column chromatography (hexane–ethyl acetate, 4:1 v/v) to afford the title compound as a colorless solid [yield 71%, m.p. 424-425 K; R_f = 0.46 (hexane–ethyl acetate, 4:1 v/v)]. Single crystals suitable for X-ray diffraction were prepared by slow evaporation of a solution of the title compound in acetone at room temperature.

Computing details top

Data collection: APEX2 (Bruker, 2009); cell refinement: 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, 2012) and DIAMOND (Brandenburg, 1998); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).

Figures top

	Fig. 1. The molecular structure of the title compound with the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. H atoms are presented as small spheres of arbitrary radius.
	Fig. 2. A view of the C—H···O interactions (dotted lines) in the crystal structure of the title compound. H atoms non-participating in hydrogen-bonding were omitted for clarity. [Symmetry codes: (i) -x + 1, -y + 2, -z + 1; (ii) x - 1, y, z; (v) x + 1, y, z.]
	Fig. 3. A view of the C—H···π and π–π interactions (dotted lines) in the crystal structure of the title compound. H atoms non-participating in hydrogen-bonding were omitted for clarity. [Symmetry codes: (iii) -x + 1, -y + 1, -z + 1; (iv) -x + 2, -y + 2, -z + 1.]

5-Cyclohexyl-3-(2-fluorophenylsulfinyl)-2-methyl-1-benzofuran top

Crystal data top

C₂₁H₂₁FO₂S	Z = 2
M_r = 356.44	F(000) = 376
Triclinic, P1	D_x = 1.328 Mg m⁻³
Hall symbol: -P 1	Melting point = 424–425 K
a = 9.0667 (2) Å	Mo Kα radiation, λ = 0.71073 Å
b = 10.3647 (2) Å	Cell parameters from 5827 reflections
c = 10.6838 (2) Å	θ = 2.5–28.3°
α = 105.395 (1)°	µ = 0.20 mm⁻¹
β = 93.418 (1)°	T = 173 K
γ = 110.839 (1)°	Block, colourless
V = 891.33 (3) Å³	0.30 × 0.22 × 0.21 mm

Data collection top

Bruker SMART APEXII CCD diffractometer	4455 independent reflections
Radiation source: rotating anode	3495 reflections with I > 2σ(I)
Graphite multilayer monochromator	R_int = 0.031
Detector resolution: 10.0 pixels mm^-1	θ_max = 28.4°, θ_min = 2.0°
ϕ and ω scans	h = −12→12
Absorption correction: multi-scan (SADABS; Bruker, 2009)	k = −13→13
T_min = 0.681, T_max = 0.746	l = −14→14
16785 measured reflections

Refinement top

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: difference Fourier map
wR(F²) = 0.116	H-atom parameters constrained
S = 1.04	w = 1/[σ²(F_o²) + (0.0549P)² + 0.2597P] where P = (F_o² + 2F_c²)/3
4455 reflections	(Δ/σ)_max = 0.001
227 parameters	Δρ_max = 0.35 e Å⁻³
0 restraints	Δρ_min = −0.30 e Å⁻³

Crystal data top

C₂₁H₂₁FO₂S	γ = 110.839 (1)°
M_r = 356.44	V = 891.33 (3) Å³
Triclinic, P1	Z = 2
a = 9.0667 (2) Å	Mo Kα radiation
b = 10.3647 (2) Å	µ = 0.20 mm⁻¹
c = 10.6838 (2) Å	T = 173 K
α = 105.395 (1)°	0.30 × 0.22 × 0.21 mm
β = 93.418 (1)°

Data collection top

Bruker SMART APEXII CCD diffractometer	4455 independent reflections
Absorption correction: multi-scan (SADABS; Bruker, 2009)	3495 reflections with I > 2σ(I)
T_min = 0.681, T_max = 0.746	R_int = 0.031
16785 measured reflections

Refinement top

R[F² > 2σ(F²)] = 0.044	0 restraints
wR(F²) = 0.116	H-atom parameters constrained
S = 1.04	Δρ_max = 0.35 e Å⁻³
4455 reflections	Δρ_min = −0.30 e Å⁻³
227 parameters

Special details top

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.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å²) top

	x	y	z	U_iso*/U_eq
S1	0.76058 (5)	1.09181 (4)	0.70859 (4)	0.03217 (12)
O1	1.03485 (12)	0.87847 (12)	0.60101 (10)	0.0301 (2)
O2	0.67934 (15)	1.12362 (13)	0.60291 (12)	0.0422 (3)
F1	0.79828 (12)	0.97950 (14)	0.92911 (10)	0.0507 (3)
C1	0.84436 (18)	0.96774 (16)	0.63603 (14)	0.0264 (3)
C2	0.77490 (17)	0.83447 (15)	0.52735 (14)	0.0251 (3)
C3	0.62620 (18)	0.75355 (16)	0.44660 (15)	0.0278 (3)
H3	0.5406	0.7860	0.4560	0.033*
C4	0.60561 (19)	0.62411 (16)	0.35184 (16)	0.0306 (3)
C5	0.7353 (2)	0.58063 (18)	0.33814 (17)	0.0364 (4)
H5	0.7198	0.4925	0.2726	0.044*
C6	0.8845 (2)	0.66036 (18)	0.41581 (17)	0.0351 (4)
H6	0.9717	0.6304	0.4045	0.042*
C7	0.89918 (18)	0.78535 (16)	0.51019 (15)	0.0273 (3)
C8	0.99753 (18)	0.98799 (16)	0.67553 (15)	0.0282 (3)
C9	0.4458 (2)	0.52941 (17)	0.26325 (17)	0.0362 (4)
H9	0.4510	0.4334	0.2193	0.043*
C10	0.4120 (2)	0.5904 (2)	0.15474 (17)	0.0394 (4)
H10A	0.4059	0.6858	0.1949	0.047*
H10B	0.5012	0.6055	0.1039	0.047*
C11	0.2557 (2)	0.4885 (2)	0.06208 (19)	0.0517 (5)
H11A	0.2343	0.5336	−0.0041	0.062*
H11B	0.2662	0.3970	0.0147	0.062*
C12	0.1165 (2)	0.4548 (2)	0.1352 (2)	0.0489 (5)
H12A	0.0959	0.5439	0.1717	0.059*
H12B	0.0194	0.3816	0.0730	0.059*
C13	0.1483 (2)	0.3982 (2)	0.2457 (2)	0.0567 (6)
H13A	0.1532	0.3019	0.2083	0.068*
H13B	0.0590	0.3860	0.2963	0.068*
C14	0.3054 (2)	0.5009 (2)	0.3382 (2)	0.0516 (5)
H14A	0.2964	0.5940	0.3829	0.062*
H14B	0.3254	0.4580	0.4067	0.062*
C15	1.1253 (2)	1.09951 (19)	0.78339 (17)	0.0372 (4)
H15A	1.0949	1.1821	0.8190	0.056*
H15B	1.2256	1.1323	0.7493	0.056*
H15C	1.1401	1.0581	0.8533	0.056*
C16	0.60472 (19)	0.97077 (17)	0.76771 (15)	0.0303 (3)
C17	0.6418 (2)	0.93040 (19)	0.87463 (16)	0.0347 (4)
C18	0.5274 (2)	0.8447 (2)	0.92798 (18)	0.0406 (4)
H18	0.5560	0.8180	1.0014	0.049*
C19	0.3692 (2)	0.79842 (19)	0.87168 (19)	0.0416 (4)
H19	0.2872	0.7398	0.9074	0.050*
C20	0.3288 (2)	0.83647 (19)	0.76392 (19)	0.0427 (4)
H20	0.2194	0.8025	0.7254	0.051*
C21	0.4458 (2)	0.92345 (18)	0.71169 (17)	0.0364 (4)
H21	0.4175	0.9504	0.6383	0.044*

Atomic displacement parameters (Å²) top

	U¹¹	U²²	U³³	U¹²	U¹³	U²³
S1	0.0368 (2)	0.0274 (2)	0.0298 (2)	0.01355 (17)	0.00040 (16)	0.00423 (16)
O1	0.0240 (5)	0.0359 (6)	0.0295 (6)	0.0102 (5)	0.0022 (4)	0.0111 (5)
O2	0.0506 (7)	0.0417 (7)	0.0430 (7)	0.0253 (6)	0.0040 (6)	0.0176 (6)
F1	0.0376 (6)	0.0818 (8)	0.0353 (6)	0.0238 (6)	−0.0011 (5)	0.0229 (6)
C1	0.0276 (7)	0.0260 (7)	0.0232 (7)	0.0083 (6)	0.0021 (6)	0.0069 (6)
C2	0.0277 (7)	0.0251 (7)	0.0236 (7)	0.0093 (6)	0.0038 (6)	0.0103 (6)
C3	0.0269 (7)	0.0264 (7)	0.0289 (8)	0.0086 (6)	0.0019 (6)	0.0095 (6)
C4	0.0321 (8)	0.0245 (7)	0.0309 (8)	0.0073 (6)	0.0003 (6)	0.0079 (6)
C5	0.0426 (10)	0.0276 (8)	0.0342 (9)	0.0141 (7)	0.0030 (7)	0.0019 (7)
C6	0.0348 (9)	0.0368 (9)	0.0368 (9)	0.0183 (7)	0.0077 (7)	0.0099 (7)
C7	0.0255 (7)	0.0300 (7)	0.0257 (7)	0.0084 (6)	0.0027 (6)	0.0113 (6)
C8	0.0293 (8)	0.0299 (8)	0.0250 (8)	0.0085 (6)	0.0033 (6)	0.0121 (6)
C9	0.0364 (9)	0.0224 (7)	0.0396 (9)	0.0068 (7)	−0.0048 (7)	0.0019 (7)
C10	0.0337 (9)	0.0483 (10)	0.0296 (9)	0.0080 (8)	0.0040 (7)	0.0126 (8)
C11	0.0410 (11)	0.0669 (13)	0.0342 (10)	0.0092 (10)	−0.0038 (8)	0.0129 (9)
C12	0.0332 (9)	0.0543 (12)	0.0502 (11)	0.0084 (9)	−0.0025 (8)	0.0155 (9)
C13	0.0379 (10)	0.0543 (12)	0.0627 (13)	−0.0061 (9)	−0.0035 (9)	0.0294 (11)
C14	0.0390 (10)	0.0554 (12)	0.0464 (11)	−0.0057 (9)	−0.0023 (8)	0.0284 (10)
C15	0.0306 (8)	0.0394 (9)	0.0329 (9)	0.0057 (7)	−0.0051 (7)	0.0105 (7)
C16	0.0345 (8)	0.0312 (8)	0.0251 (8)	0.0169 (7)	0.0036 (6)	0.0032 (6)
C17	0.0350 (9)	0.0408 (9)	0.0278 (8)	0.0187 (7)	0.0014 (7)	0.0050 (7)
C18	0.0502 (11)	0.0438 (10)	0.0353 (9)	0.0257 (9)	0.0104 (8)	0.0128 (8)
C19	0.0426 (10)	0.0317 (9)	0.0494 (11)	0.0152 (8)	0.0149 (8)	0.0083 (8)
C20	0.0329 (9)	0.0373 (9)	0.0525 (11)	0.0149 (8)	−0.0001 (8)	0.0048 (8)
C21	0.0369 (9)	0.0364 (9)	0.0349 (9)	0.0186 (7)	−0.0021 (7)	0.0053 (7)

Geometric parameters (Å, º) top

S1—O2	1.4823 (12)	C11—C12	1.508 (3)
S1—C1	1.7516 (15)	C11—H11A	0.9900
S1—C16	1.7988 (17)	C11—H11B	0.9900
O1—C8	1.3647 (19)	C12—C13	1.506 (3)
O1—C7	1.3790 (18)	C12—H12A	0.9900
F1—C17	1.3569 (19)	C12—H12B	0.9900
C1—C8	1.351 (2)	C13—C14	1.527 (3)
C1—C2	1.447 (2)	C13—H13A	0.9900
C2—C3	1.392 (2)	C13—H13B	0.9900
C2—C7	1.395 (2)	C14—H14A	0.9900
C3—C4	1.392 (2)	C14—H14B	0.9900
C3—H3	0.9500	C15—H15A	0.9800
C4—C5	1.403 (2)	C15—H15B	0.9800
C4—C9	1.513 (2)	C15—H15C	0.9800
C5—C6	1.381 (2)	C16—C17	1.379 (2)
C5—H5	0.9500	C16—C21	1.383 (2)
C6—C7	1.371 (2)	C17—C18	1.368 (3)
C6—H6	0.9500	C18—C19	1.380 (3)
C8—C15	1.479 (2)	C18—H18	0.9500
C9—C10	1.524 (2)	C19—C20	1.382 (3)
C9—C14	1.527 (3)	C19—H19	0.9500
C9—H9	1.0000	C20—C21	1.381 (3)
C10—C11	1.522 (2)	C20—H20	0.9500
C10—H10A	0.9900	C21—H21	0.9500
C10—H10B	0.9900

O2—S1—C1	108.76 (7)	C10—C11—H11B	109.3
O2—S1—C16	106.28 (8)	H11A—C11—H11B	107.9
C1—S1—C16	97.18 (7)	C13—C12—C11	111.76 (17)
C8—O1—C7	106.55 (11)	C13—C12—H12A	109.3
C8—C1—C2	107.67 (13)	C11—C12—H12A	109.3
C8—C1—S1	122.41 (12)	C13—C12—H12B	109.3
C2—C1—S1	129.89 (11)	C11—C12—H12B	109.3
C3—C2—C7	119.50 (14)	H12A—C12—H12B	107.9
C3—C2—C1	136.36 (14)	C12—C13—C14	111.52 (15)
C7—C2—C1	104.13 (13)	C12—C13—H13A	109.3
C2—C3—C4	118.59 (14)	C14—C13—H13A	109.3
C2—C3—H3	120.7	C12—C13—H13B	109.3
C4—C3—H3	120.7	C14—C13—H13B	109.3
C3—C4—C5	119.45 (15)	H13A—C13—H13B	108.0
C3—C4—C9	121.17 (14)	C9—C14—C13	111.25 (17)
C5—C4—C9	119.38 (14)	C9—C14—H14A	109.4
C6—C5—C4	122.89 (15)	C13—C14—H14A	109.4
C6—C5—H5	118.6	C9—C14—H14B	109.4
C4—C5—H5	118.6	C13—C14—H14B	109.4
C7—C6—C5	116.01 (15)	H14A—C14—H14B	108.0
C7—C6—H6	122.0	C8—C15—H15A	109.5
C5—C6—H6	122.0	C8—C15—H15B	109.5
C6—C7—O1	125.80 (14)	H15A—C15—H15B	109.5
C6—C7—C2	123.52 (15)	C8—C15—H15C	109.5
O1—C7—C2	110.68 (13)	H15A—C15—H15C	109.5
C1—C8—O1	110.97 (13)	H15B—C15—H15C	109.5
C1—C8—C15	132.96 (15)	C17—C16—C21	119.06 (16)
O1—C8—C15	116.03 (13)	C17—C16—S1	120.14 (13)
C4—C9—C10	112.40 (13)	C21—C16—S1	120.71 (13)
C4—C9—C14	113.24 (14)	F1—C17—C18	119.26 (15)
C10—C9—C14	109.31 (14)	F1—C17—C16	118.10 (15)
C4—C9—H9	107.2	C18—C17—C16	122.63 (16)
C10—C9—H9	107.2	C17—C18—C19	117.89 (17)
C14—C9—H9	107.2	C17—C18—H18	121.1
C11—C10—C9	111.29 (15)	C19—C18—H18	121.1
C11—C10—H10A	109.4	C18—C19—C20	120.65 (17)
C9—C10—H10A	109.4	C18—C19—H19	119.7
C11—C10—H10B	109.4	C20—C19—H19	119.7
C9—C10—H10B	109.4	C21—C20—C19	120.64 (17)
H10A—C10—H10B	108.0	C21—C20—H20	119.7
C12—C11—C10	111.80 (16)	C19—C20—H20	119.7
C12—C11—H11A	109.3	C20—C21—C16	119.12 (16)
C10—C11—H11A	109.3	C20—C21—H21	120.4
C12—C11—H11B	109.3	C16—C21—H21	120.4

O2—S1—C1—C8	131.20 (13)	C7—O1—C8—C15	178.13 (12)
C16—S1—C1—C8	−118.85 (14)	C3—C4—C9—C10	75.69 (19)
O2—S1—C1—C2	−46.74 (16)	C5—C4—C9—C10	−104.29 (18)
C16—S1—C1—C2	63.21 (15)	C3—C4—C9—C14	−48.8 (2)
C8—C1—C2—C3	178.69 (16)	C5—C4—C9—C14	131.23 (17)
S1—C1—C2—C3	−3.1 (3)	C4—C9—C10—C11	176.45 (15)
C8—C1—C2—C7	−0.48 (16)	C14—C9—C10—C11	−56.9 (2)
S1—C1—C2—C7	177.70 (12)	C9—C10—C11—C12	55.9 (2)
C7—C2—C3—C4	0.9 (2)	C10—C11—C12—C13	−53.9 (2)
C1—C2—C3—C4	−178.16 (16)	C11—C12—C13—C14	53.8 (3)
C2—C3—C4—C5	−1.5 (2)	C4—C9—C14—C13	−176.82 (15)
C2—C3—C4—C9	178.51 (14)	C10—C9—C14—C13	57.0 (2)
C3—C4—C5—C6	0.5 (3)	C12—C13—C14—C9	−56.0 (2)
C9—C4—C5—C6	−179.48 (15)	O2—S1—C16—C17	−174.67 (12)
C4—C5—C6—C7	1.0 (2)	C1—S1—C16—C17	73.34 (14)
C5—C6—C7—O1	177.69 (14)	O2—S1—C16—C21	1.70 (15)
C5—C6—C7—C2	−1.7 (2)	C1—S1—C16—C21	−110.29 (14)
C8—O1—C7—C6	−179.97 (15)	C21—C16—C17—F1	−179.18 (14)
C8—O1—C7—C2	−0.55 (15)	S1—C16—C17—F1	−2.8 (2)
C3—C2—C7—C6	0.7 (2)	C21—C16—C17—C18	0.1 (2)
C1—C2—C7—C6	−179.93 (14)	S1—C16—C17—C18	176.54 (13)
C3—C2—C7—O1	−178.71 (12)	F1—C17—C18—C19	178.98 (15)
C1—C2—C7—O1	0.63 (16)	C16—C17—C18—C19	−0.3 (3)
C2—C1—C8—O1	0.17 (17)	C17—C18—C19—C20	0.7 (3)
S1—C1—C8—O1	−178.18 (10)	C18—C19—C20—C21	−1.0 (3)
C2—C1—C8—C15	−177.26 (15)	C19—C20—C21—C16	0.8 (3)
S1—C1—C8—C15	4.4 (2)	C17—C16—C21—C20	−0.3 (2)
C7—O1—C8—C1	0.23 (16)	S1—C16—C21—C20	−176.75 (12)

Hydrogen-bond geometry (Å, º) top

Cg2 is the centroid of the C2–C7 benzene ring.

D—H···A	D—H	H···A	D···A	D—H···A
C3—H3···O2ⁱ	0.95	2.60	3.5024 (19)	160
C20—H20···O1ⁱⁱ	0.95	2.53	3.316 (2)	140
C21—H21···O2ⁱ	0.95	2.49	3.332 (2)	148
C14—H14B···Cg2ⁱⁱⁱ	0.99	2.69	3.618 (2)	156
C15—H15B···Cg2^iv	0.98	2.85	3.422 (2)	118

Symmetry codes: (i) −x+1, −y+2, −z+1; (ii) x−1, y, z; (iii) −x+1, −y+1, −z+1; (iv) −x+2, −y+2, −z+1.

Experimental details

Crystal data
Chemical formula	C₂₁H₂₁FO₂S
M_r	356.44
Crystal system, space group	Triclinic, P1
Temperature (K)	173
a, b, c (Å)	9.0667 (2), 10.3647 (2), 10.6838 (2)
α, β, γ (°)	105.395 (1), 93.418 (1), 110.839 (1)
V (Å³)	891.33 (3)
Z	2
Radiation type	Mo Kα
µ (mm⁻¹)	0.20
Crystal size (mm)	0.30 × 0.22 × 0.21

Data collection
Diffractometer	Bruker SMART APEXII CCD diffractometer
Absorption correction	Multi-scan (SADABS; Bruker, 2009)
T_min, T_max	0.681, 0.746
No. of measured, independent and observed [I > 2σ(I)] reflections	16785, 4455, 3495
R_int	0.031
(sin θ/λ)_max (Å⁻¹)	0.669

Refinement
R[F² > 2σ(F²)], wR(F²), S	0.044, 0.116, 1.04
No. of reflections	4455
No. of parameters	227
H-atom treatment	H-atom parameters constrained
Δρ_max, Δρ_min (e Å⁻³)	0.35, −0.30

Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 2012) and DIAMOND (Brandenburg, 1998).