organic compounds
Benzyl 2-ethylhexyl sulfoxide
aSchool of Chemistry and Environment, South China Normal University, Guangzhou 510006, People's Republic of China, and bDepartment of Chemistry, South China University of Technology, Guangzhou 510641, People's Republic of China
*Correspondence e-mail: chzgxu@scnu.edu.cn
The molecule of the title compound, C15H24OS, shows S conformations for the S atom and the asymmetric C atom of the isooctyl group. The long axes of the molecules are directed along the c axis. In the the molecules are linked by weak intermolecular bifurcated C—H⋯O hydrogen bonds.
Related literature
For an X-ray and neutron diffraction study of benzyl tert-butyl sulfoxide, see: Iitaka et al. (1986). For an X-ray study of a flexible disulfoxide ligand, 1,6-bis(benzylsulfinyl)hexane, see: Li et al., (2003); For the use of in the separation of palladium from other platinum-group metals by see: Xu et al. (2006, 2007).
Experimental
Crystal data
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Data collection: APEX2 (Bruker, 2005); cell SAINT (Bruker, 2005); 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); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).
Supporting information
https://doi.org/10.1107/S1600536809044328/si2215sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536809044328/si2215Isup2.hkl
The title compound was prepared refering to the literature method (Li et al.,2003; Iitaka et al., 1986) with little modification. Sodium hydroxide (99%, 0.273 g, 0.0068 mol) and 1-isooctyl mercaptan (1.000 g, 0.0068 mol) were dissolved in anhydrous ethanol (50 ml) at 70°C, and then benzylchloride (0.86 g, 0.0068 mol) was added to the above solution with stirring over 1 h. The solution was extracted with CH2Cl2 after addition 400 ml of water. Benzyl isooctyl sulfide(1.412 g, 0.0060 mol) was obtained after evaporation of CH2Cl2. Yield: 87%. Hydrogen peroxide (30%, 0.0043 mol) was added dropwise to a solution of benzyl isooctyl sulfide (1.000 g, 0.0042 mol) in acetic acid (60 ml) on ice bath with a vigorously stir for 1 h. 500 ml of water was added. The solution was extracted with CH2Cl2, and the product of benzyl isooctyl sulfoxide(0.943 g, 0.0037 mol) was obtained after evaporation of CH2Cl2. Yield: 88%. It was characterized by recording its infrared and NMR spectra. White single crystals of the title compound were obtained by slow evaporation of its mixed solution including n-hexane and dichloromethane.
All H atoms were placed in calculated positions and subsequently constrained to ride on their parent atoms, with C–H distances of 0.93 Å (C-aromatic) and 0.97 Å (C-methyl). The Uiso(H) values were set at 1.2 Ueq(C aromatic) and 1.5 Ueq(C methyl).
Sulfoxides have been widely used in the separation of palladium from other platinum-group metals(PGMs) by
(Xu et al., 2006). The experimental results indicated that the title compound exhibited excellent extraction property to PGMs (Xu et al.,2007). A similar disulfoxide ligand 1,6-bis(benzylsulfinyl)hexane and its Copper(II) and Cadmium(II) dimeric complexes were obtained (Li et al.,2003).The stucture of the title compound, (I), Fig.1, exhibit the S conformation for the sulfur atom and asymmetric carbon atom of the isooctyl group. The long axes of the molecules are directed along the c axis. Additionally, the
exhibits weak intermolecular bifurcated C—H···O hydrogen bonds (for geometric details see Table 1).For an X-ray and neutron diffraction study of benzyl tert-butyl sulfoxide, see: Iitaka et al. (1986). For an X-ray study of a flexible disulfoxide ligand, 1,6-bis(benzylsulfinyl)hexane, see: Li et al., (2003); For the use of
in the separation of palladium from other platinum-group metals by see: Xu et al. (2006, 2007).Data collection: APEX2 (Bruker, 2005); cell
SAINT (Bruker, 2005); data reduction: SAINT (Bruker, 2005); 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); software used to prepare material for publication: SHELXL97 and PLATON (Spek, 2009).Fig. 1. Molecule structure of (I) with displacement ellipsoids drawn at the 50% probability level. | |
Fig. 2. Molecular packing of the title compound as viewed along the b axis. |
C15H24OS | F(000) = 276 |
Mr = 252.41 | Dx = 1.118 Mg m−3 |
Monoclinic, P21 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2yb | Cell parameters from 2250 reflections |
a = 8.832 (2) Å | θ = 2.4–23.4° |
b = 5.2321 (14) Å | µ = 0.20 mm−1 |
c = 16.588 (4) Å | T = 273 K |
β = 102.005 (3)° | Block, white |
V = 749.8 (3) Å3 | 0.26 × 0.22 × 0.15 mm |
Z = 2 |
Bruker SMART APEXII diffractometer | 3119 independent reflections |
Radiation source: fine-focus sealed tube | 2527 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.021 |
φ and ω scans | θmax = 28.3°, θmin = 2.4° |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | h = −7→11 |
Tmin = 0.949, Tmax = 0.970 | k = −6→6 |
4539 measured reflections | l = −21→22 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.039 | H-atom parameters constrained |
wR(F2) = 0.095 | w = 1/[σ2(Fo2) + (0.047P)2 + ] where P = (Fo2 + 2Fc2)/3 |
S = 1.06 | (Δ/σ)max = 0.022 |
3119 reflections | Δρmax = 0.15 e Å−3 |
156 parameters | Δρmin = −0.15 e Å−3 |
1 restraint | Absolute structure: Flack (1983), 1074 Friedel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: −0.03 (8) |
C15H24OS | V = 749.8 (3) Å3 |
Mr = 252.41 | Z = 2 |
Monoclinic, P21 | Mo Kα radiation |
a = 8.832 (2) Å | µ = 0.20 mm−1 |
b = 5.2321 (14) Å | T = 273 K |
c = 16.588 (4) Å | 0.26 × 0.22 × 0.15 mm |
β = 102.005 (3)° |
Bruker SMART APEXII diffractometer | 3119 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 2527 reflections with I > 2σ(I) |
Tmin = 0.949, Tmax = 0.970 | Rint = 0.021 |
4539 measured reflections |
R[F2 > 2σ(F2)] = 0.039 | H-atom parameters constrained |
wR(F2) = 0.095 | Δρmax = 0.15 e Å−3 |
S = 1.06 | Δρmin = −0.15 e Å−3 |
3119 reflections | Absolute structure: Flack (1983), 1074 Friedel pairs |
156 parameters | Absolute structure parameter: −0.03 (8) |
1 restraint |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s 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 > 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 | ||
S1 | 0.48826 (6) | 0.23389 (10) | 0.70138 (3) | 0.05069 (16) | |
C1 | 0.6639 (3) | 0.0772 (5) | 0.68705 (15) | 0.0621 (6) | |
H1A | 0.7435 | 0.0945 | 0.7367 | 0.075* | |
H1B | 0.6441 | −0.1036 | 0.6769 | 0.075* | |
C2 | 0.7188 (2) | 0.1937 (4) | 0.61568 (12) | 0.0502 (5) | |
C3 | 0.6676 (3) | 0.1092 (5) | 0.53602 (17) | 0.0714 (7) | |
H3 | 0.5993 | −0.0279 | 0.5259 | 0.086* | |
C4 | 0.7162 (3) | 0.2252 (7) | 0.47099 (14) | 0.0778 (7) | |
H4 | 0.6802 | 0.1663 | 0.4175 | 0.093* | |
C10 | 0.3505 (2) | 0.0564 (5) | 0.91695 (12) | 0.0555 (6) | |
H10A | 0.3303 | −0.1252 | 0.9095 | 0.067* | |
H10B | 0.4548 | 0.0759 | 0.9492 | 0.067* | |
C9 | 0.3423 (2) | 0.1786 (4) | 0.83225 (11) | 0.0489 (5) | |
H9 | 0.3620 | 0.3617 | 0.8413 | 0.059* | |
C14 | 0.1834 (2) | 0.1520 (4) | 0.77427 (13) | 0.0571 (6) | |
H14A | 0.1071 | 0.2359 | 0.7996 | 0.069* | |
H14B | 0.1862 | 0.2427 | 0.7236 | 0.069* | |
C8 | 0.4742 (2) | 0.0711 (5) | 0.79491 (12) | 0.0516 (5) | |
H8A | 0.4564 | −0.1095 | 0.7835 | 0.062* | |
H8B | 0.5712 | 0.0884 | 0.8345 | 0.062* | |
C5 | 0.8165 (3) | 0.4249 (6) | 0.48481 (16) | 0.0722 (8) | |
H5 | 0.8493 | 0.5022 | 0.4409 | 0.087* | |
C11 | 0.2376 (3) | 0.1677 (5) | 0.96566 (13) | 0.0607 (6) | |
H11A | 0.2536 | 0.3509 | 0.9708 | 0.073* | |
H11B | 0.1327 | 0.1387 | 0.9354 | 0.073* | |
C7 | 0.8196 (3) | 0.3962 (5) | 0.62789 (14) | 0.0640 (6) | |
H7 | 0.8557 | 0.4572 | 0.6811 | 0.077* | |
C6 | 0.8688 (3) | 0.5117 (6) | 0.56292 (15) | 0.0737 (7) | |
H6 | 0.9375 | 0.6484 | 0.5726 | 0.088* | |
C12 | 0.2557 (3) | 0.0528 (6) | 1.05069 (14) | 0.0730 (7) | |
H12A | 0.3602 | 0.0843 | 1.0812 | 0.088* | |
H12B | 0.2417 | −0.1308 | 1.0455 | 0.088* | |
C15 | 0.1300 (3) | −0.1175 (6) | 0.75268 (15) | 0.0782 (7) | |
H15A | 0.2028 | −0.2020 | 0.7261 | 0.117* | |
H15B | 0.0302 | −0.1140 | 0.7161 | 0.117* | |
H15C | 0.1228 | −0.2083 | 0.8020 | 0.117* | |
C13 | 0.1419 (3) | 0.1591 (7) | 1.09933 (15) | 0.0903 (11) | |
H13A | 0.1537 | 0.3412 | 1.1040 | 0.135* | |
H13B | 0.1618 | 0.0843 | 1.1533 | 0.135* | |
H13C | 0.0382 | 0.1190 | 1.0713 | 0.135* | |
O1 | 0.5294 (2) | 0.5042 (3) | 0.72507 (10) | 0.0703 (5) |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0564 (3) | 0.0427 (3) | 0.0549 (3) | 0.0024 (3) | 0.0162 (2) | −0.0007 (3) |
C1 | 0.0675 (15) | 0.0432 (14) | 0.0836 (16) | 0.0064 (12) | 0.0342 (13) | 0.0086 (12) |
C2 | 0.0520 (11) | 0.0406 (15) | 0.0624 (12) | 0.0054 (10) | 0.0215 (9) | 0.0006 (10) |
C3 | 0.0696 (15) | 0.0641 (17) | 0.0844 (17) | −0.0124 (13) | 0.0249 (13) | −0.0186 (13) |
C4 | 0.0815 (16) | 0.094 (2) | 0.0604 (13) | 0.006 (2) | 0.0211 (12) | −0.0157 (18) |
C10 | 0.0608 (13) | 0.0537 (14) | 0.0536 (12) | 0.0046 (11) | 0.0156 (10) | 0.0015 (10) |
C9 | 0.0560 (11) | 0.0377 (14) | 0.0538 (11) | 0.0022 (9) | 0.0132 (9) | −0.0009 (9) |
C14 | 0.0575 (12) | 0.0593 (16) | 0.0560 (12) | 0.0035 (11) | 0.0150 (10) | 0.0000 (10) |
C8 | 0.0587 (12) | 0.0409 (13) | 0.0580 (12) | 0.0034 (10) | 0.0184 (10) | 0.0038 (9) |
C5 | 0.0774 (17) | 0.078 (2) | 0.0697 (15) | 0.0113 (15) | 0.0353 (13) | 0.0131 (14) |
C11 | 0.0643 (13) | 0.0643 (19) | 0.0554 (11) | 0.0034 (12) | 0.0170 (10) | −0.0006 (11) |
C7 | 0.0638 (14) | 0.0697 (18) | 0.0593 (13) | −0.0104 (14) | 0.0145 (11) | −0.0028 (12) |
C6 | 0.0769 (17) | 0.0720 (19) | 0.0771 (16) | −0.0169 (14) | 0.0270 (13) | 0.0031 (14) |
C12 | 0.0772 (16) | 0.084 (2) | 0.0600 (14) | 0.0012 (15) | 0.0203 (12) | −0.0009 (13) |
C15 | 0.0746 (16) | 0.0795 (19) | 0.0805 (16) | −0.0213 (16) | 0.0164 (13) | −0.0149 (15) |
C13 | 0.0885 (18) | 0.122 (3) | 0.0676 (15) | 0.0008 (18) | 0.0328 (14) | −0.0044 (16) |
O1 | 0.1012 (13) | 0.0340 (9) | 0.0831 (10) | 0.0008 (9) | 0.0366 (9) | 0.0008 (8) |
S1—O1 | 1.4923 (18) | C14—H14B | 0.9700 |
S1—C8 | 1.797 (2) | C8—H8A | 0.9700 |
S1—C1 | 1.813 (2) | C8—H8B | 0.9700 |
C1—C2 | 1.499 (3) | C5—C6 | 1.360 (4) |
C1—H1A | 0.9700 | C5—H5 | 0.9300 |
C1—H1B | 0.9700 | C11—C12 | 1.511 (3) |
C2—C7 | 1.372 (3) | C11—H11A | 0.9700 |
C2—C3 | 1.378 (3) | C11—H11B | 0.9700 |
C3—C4 | 1.382 (4) | C7—C6 | 1.382 (3) |
C3—H3 | 0.9300 | C7—H7 | 0.9300 |
C4—C5 | 1.358 (4) | C6—H6 | 0.9300 |
C4—H4 | 0.9300 | C12—C13 | 1.520 (3) |
C10—C11 | 1.523 (3) | C12—H12A | 0.9700 |
C10—C9 | 1.532 (3) | C12—H12B | 0.9700 |
C10—H10A | 0.9700 | C15—H15A | 0.9600 |
C10—H10B | 0.9700 | C15—H15B | 0.9600 |
C9—C14 | 1.534 (3) | C15—H15C | 0.9600 |
C9—C8 | 1.535 (3) | C13—H13A | 0.9600 |
C9—H9 | 0.9800 | C13—H13B | 0.9600 |
C14—C15 | 1.507 (3) | C13—H13C | 0.9600 |
C14—H14A | 0.9700 | ||
O1—S1—C8 | 106.19 (10) | S1—C8—H8A | 109.3 |
O1—S1—C1 | 107.14 (11) | C9—C8—H8B | 109.3 |
C8—S1—C1 | 96.52 (10) | S1—C8—H8B | 109.3 |
C2—C1—S1 | 110.21 (15) | H8A—C8—H8B | 107.9 |
C2—C1—H1A | 109.6 | C4—C5—C6 | 119.9 (2) |
S1—C1—H1A | 109.6 | C4—C5—H5 | 120.1 |
C2—C1—H1B | 109.6 | C6—C5—H5 | 120.1 |
S1—C1—H1B | 109.6 | C12—C11—C10 | 112.9 (2) |
H1A—C1—H1B | 108.1 | C12—C11—H11A | 109.0 |
C7—C2—C3 | 117.6 (2) | C10—C11—H11A | 109.0 |
C7—C2—C1 | 120.3 (2) | C12—C11—H11B | 109.0 |
C3—C2—C1 | 122.1 (2) | C10—C11—H11B | 109.0 |
C2—C3—C4 | 121.0 (2) | H11A—C11—H11B | 107.8 |
C2—C3—H3 | 119.5 | C2—C7—C6 | 121.5 (2) |
C4—C3—H3 | 119.5 | C2—C7—H7 | 119.3 |
C5—C4—C3 | 120.3 (2) | C6—C7—H7 | 119.3 |
C5—C4—H4 | 119.9 | C5—C6—C7 | 119.8 (3) |
C3—C4—H4 | 119.9 | C5—C6—H6 | 120.1 |
C11—C10—C9 | 114.60 (18) | C7—C6—H6 | 120.1 |
C11—C10—H10A | 108.6 | C11—C12—C13 | 113.4 (2) |
C9—C10—H10A | 108.6 | C11—C12—H12A | 108.9 |
C11—C10—H10B | 108.6 | C13—C12—H12A | 108.9 |
C9—C10—H10B | 108.6 | C11—C12—H12B | 108.9 |
H10A—C10—H10B | 107.6 | C13—C12—H12B | 108.9 |
C10—C9—C14 | 113.55 (17) | H12A—C12—H12B | 107.7 |
C10—C9—C8 | 108.82 (16) | C14—C15—H15A | 109.5 |
C14—C9—C8 | 112.70 (16) | C14—C15—H15B | 109.5 |
C10—C9—H9 | 107.1 | H15A—C15—H15B | 109.5 |
C14—C9—H9 | 107.1 | C14—C15—H15C | 109.5 |
C8—C9—H9 | 107.1 | H15A—C15—H15C | 109.5 |
C15—C14—C9 | 115.7 (2) | H15B—C15—H15C | 109.5 |
C15—C14—H14A | 108.3 | C12—C13—H13A | 109.5 |
C9—C14—H14A | 108.3 | C12—C13—H13B | 109.5 |
C15—C14—H14B | 108.3 | H13A—C13—H13B | 109.5 |
C9—C14—H14B | 108.3 | C12—C13—H13C | 109.5 |
H14A—C14—H14B | 107.4 | H13A—C13—H13C | 109.5 |
C9—C8—S1 | 111.68 (15) | H13B—C13—H13C | 109.5 |
C9—C8—H8A | 109.3 | ||
O1—S1—C1—C2 | −64.88 (19) | C10—C9—C8—S1 | −172.63 (15) |
C8—S1—C1—C2 | −174.08 (17) | C14—C9—C8—S1 | 60.5 (2) |
S1—C1—C2—C7 | 90.3 (2) | O1—S1—C8—C9 | 63.90 (17) |
S1—C1—C2—C3 | −87.7 (2) | C1—S1—C8—C9 | 173.90 (16) |
C7—C2—C3—C4 | −0.1 (4) | C3—C4—C5—C6 | −0.2 (4) |
C1—C2—C3—C4 | 177.9 (2) | C9—C10—C11—C12 | −176.65 (19) |
C2—C3—C4—C5 | 0.3 (4) | C3—C2—C7—C6 | −0.1 (4) |
C11—C10—C9—C14 | −60.3 (3) | C1—C2—C7—C6 | −178.2 (2) |
C11—C10—C9—C8 | 173.35 (18) | C4—C5—C6—C7 | 0.0 (4) |
C10—C9—C14—C15 | −61.5 (2) | C2—C7—C6—C5 | 0.2 (4) |
C8—C9—C14—C15 | 62.8 (2) | C10—C11—C12—C13 | −179.0 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
C8—H8A···O1i | 0.97 | 2.39 | 3.258 (3) | 149 |
C1—H1B···O1i | 0.97 | 2.49 | 3.333 (3) | 145 |
Symmetry code: (i) x, y−1, z. |
Experimental details
Crystal data | |
Chemical formula | C15H24OS |
Mr | 252.41 |
Crystal system, space group | Monoclinic, P21 |
Temperature (K) | 273 |
a, b, c (Å) | 8.832 (2), 5.2321 (14), 16.588 (4) |
β (°) | 102.005 (3) |
V (Å3) | 749.8 (3) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.20 |
Crystal size (mm) | 0.26 × 0.22 × 0.15 |
Data collection | |
Diffractometer | Bruker SMART APEXII |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.949, 0.970 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 4539, 3119, 2527 |
Rint | 0.021 |
(sin θ/λ)max (Å−1) | 0.666 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.039, 0.095, 1.06 |
No. of reflections | 3119 |
No. of parameters | 156 |
No. of restraints | 1 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.15, −0.15 |
Absolute structure | Flack (1983), 1074 Friedel pairs |
Absolute structure parameter | −0.03 (8) |
Computer programs: APEX2 (Bruker, 2005), SAINT (Bruker, 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997), SHELXL97 and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
C8—H8A···O1i | 0.97 | 2.39 | 3.258 (3) | 149.0 |
C1—H1B···O1i | 0.97 | 2.49 | 3.333 (3) | 144.8 |
Symmetry code: (i) x, y−1, z. |
Acknowledgements
This work was supported by the Natural Science Foundation of Guangdong Province (Nos. 8451063101000731 and 9151063101000037) and the NNSFC (No. 20971046).
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Sulfoxides have been widely used in the separation of palladium from other platinum-group metals(PGMs) by solvent extraction (Xu et al., 2006). The experimental results indicated that the title compound exhibited excellent extraction property to PGMs (Xu et al.,2007). A similar disulfoxide ligand 1,6-bis(benzylsulfinyl)hexane and its Copper(II) and Cadmium(II) dimeric complexes were obtained (Li et al.,2003).
The stucture of the title compound, (I), Fig.1, exhibit the S conformation for the sulfur atom and asymmetric carbon atom of the isooctyl group. The long axes of the molecules are directed along the c axis. Additionally, the crystal structure exhibits weak intermolecular bifurcated C—H···O hydrogen bonds (for geometric details see Table 1).