organic compounds
N-[(E)-4-(Methylsulfonyl)benzylidene]-3-nitroaniline
aSchool of Life Sciences, ShanDong University of Technology, ZiBo 255049, People's Republic of China
*Correspondence e-mail: njuqss@yahoo.com.cn
In the title compound, C14H12N2O4S, the dihedral angle between the two aromatic rings is 35.65 (12)°. The crystal packing is stabilized by weak C—H⋯O hydrogen bonds and aromatic π–π ring stacking interactions [minimum ring centroid separation = 3.697 (3) Å].
Related literature
For pharmacological applications of ); Villar et al. (2004); Wadher et al. (2009). For similar structures, see: Qian & Cui (2009); Qian & Liu (2010). For comparative bond lengths, see: Allen et al. (1987).
see: Venugopal & Jayashree (2008Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2004); cell SAINT (Bruker, 2004); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536811031539/zs2133sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811031539/zs2133Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536811031539/zs2133Isup3.cml
4-(Methylsulfonyl)benzaldehyde (0.184 g) and 2,6-diisopropylaniline (0.138 g) were dissolved in acetonitrile (20 ml). The mixture was stirred at room temperature for 10 min to give a clear yellow solution. After allowing the solution to evaporate in air for 5 days, yellow block-shaped crystals of the title compound were obtained.
All H atoms were placed in geometrical positions and constrained to ride on their parent atoms with C—H distances in the range 0.93–0.96 Å. These were treated as riding atoms, with Uiso(H) = kUeq(C), where k = 1.5 for methyl and 1.2 for all other H atoms.
Data collection: APEX2 (Bruker, 2004); cell
SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C14H12N2O4S | F(000) = 632 |
Mr = 304.32 | Dx = 1.410 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 3721 reflections |
a = 12.707 (7) Å | θ = 2.8–26.0° |
b = 8.669 (5) Å | µ = 0.24 mm−1 |
c = 14.257 (8) Å | T = 296 K |
β = 114.140 (5)° | Block, yellow |
V = 1433.2 (14) Å3 | 0.25 × 0.23 × 0.21 mm |
Z = 4 |
Bruker APEXII CCD diffractometer | 2525 independent reflections |
Radiation source: fine-focus sealed tube | 1937 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.026 |
ϕ and ω scans | θmax = 25.0°, θmin = 2.8° |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | h = −15→15 |
Tmin = 0.942, Tmax = 0.951 | k = −10→9 |
9119 measured reflections | l = −16→16 |
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)] = 0.037 | H-atom parameters constrained |
wR(F2) = 0.102 | w = 1/[σ2(Fo2) + (0.0358P)2 + 0.9892P] where P = (Fo2 + 2Fc2)/3 |
S = 1.02 | (Δ/σ)max < 0.001 |
2525 reflections | Δρmax = 0.28 e Å−3 |
192 parameters | Δρmin = −0.21 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0103 (10) |
C14H12N2O4S | V = 1433.2 (14) Å3 |
Mr = 304.32 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 12.707 (7) Å | µ = 0.24 mm−1 |
b = 8.669 (5) Å | T = 296 K |
c = 14.257 (8) Å | 0.25 × 0.23 × 0.21 mm |
β = 114.140 (5)° |
Bruker APEXII CCD diffractometer | 2525 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | 1937 reflections with I > 2σ(I) |
Tmin = 0.942, Tmax = 0.951 | Rint = 0.026 |
9119 measured reflections |
R[F2 > 2σ(F2)] = 0.037 | 0 restraints |
wR(F2) = 0.102 | H-atom parameters constrained |
S = 1.02 | Δρmax = 0.28 e Å−3 |
2525 reflections | Δρmin = −0.21 e Å−3 |
192 parameters |
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 | ||
C1 | 1.01452 (18) | 0.6909 (2) | 0.10542 (17) | 0.0405 (5) | |
C2 | 1.0352 (2) | 0.5465 (3) | 0.15075 (18) | 0.0475 (6) | |
H2 | 1.1079 | 0.5208 | 0.2000 | 0.057* | |
C3 | 0.9452 (2) | 0.4404 (3) | 0.12122 (18) | 0.0498 (6) | |
H3 | 0.9580 | 0.3433 | 0.1515 | 0.060* | |
C4 | 0.83654 (19) | 0.4776 (3) | 0.04718 (17) | 0.0420 (5) | |
C5 | 0.8187 (2) | 0.6221 (3) | 0.00106 (19) | 0.0507 (6) | |
H5 | 0.7467 | 0.6471 | −0.0496 | 0.061* | |
C6 | 0.90665 (19) | 0.7287 (3) | 0.02969 (18) | 0.0500 (6) | |
H6 | 0.8941 | 0.8253 | −0.0013 | 0.060* | |
C7 | 0.7403 (2) | 0.3652 (3) | 0.01717 (18) | 0.0479 (6) | |
H7 | 0.7518 | 0.2703 | 0.0503 | 0.058* | |
C8 | 0.5512 (2) | 0.2885 (3) | −0.08472 (18) | 0.0496 (6) | |
C9 | 0.5682 (2) | 0.1309 (3) | −0.09320 (17) | 0.0485 (6) | |
H9 | 0.6417 | 0.0912 | −0.0765 | 0.058* | |
C10 | 0.4727 (2) | 0.0354 (3) | −0.12720 (17) | 0.0504 (6) | |
C11 | 0.3618 (2) | 0.0891 (4) | −0.1524 (2) | 0.0648 (8) | |
H11 | 0.2994 | 0.0217 | −0.1736 | 0.078* | |
C12 | 0.3465 (2) | 0.2452 (4) | −0.1451 (2) | 0.0703 (8) | |
H12 | 0.2728 | 0.2841 | −0.1621 | 0.084* | |
C13 | 0.4393 (2) | 0.3445 (3) | −0.1129 (2) | 0.0640 (7) | |
H13 | 0.4273 | 0.4499 | −0.1099 | 0.077* | |
N1 | 0.64205 (17) | 0.3974 (2) | −0.05349 (16) | 0.0530 (5) | |
N2 | 0.4908 (2) | −0.1309 (3) | −0.13755 (16) | 0.0634 (6) | |
O1 | 1.22903 (14) | 0.7666 (2) | 0.21956 (15) | 0.0694 (6) | |
O2 | 1.13137 (15) | 0.8930 (2) | 0.05065 (14) | 0.0609 (5) | |
C14 | 1.0752 (2) | 0.9783 (3) | 0.1990 (2) | 0.0600 (7) | |
H14A | 1.0613 | 0.9364 | 0.2552 | 0.090* | |
H14B | 1.0048 | 1.0201 | 0.1486 | 0.090* | |
H14C | 1.1320 | 1.0585 | 0.2238 | 0.090* | |
O4 | 0.5876 (2) | −0.1747 (2) | −0.12006 (19) | 0.0886 (7) | |
O5 | 0.4073 (2) | −0.2168 (3) | −0.1646 (2) | 0.1008 (8) | |
S1 | 1.12545 (5) | 0.83166 (7) | 0.14267 (5) | 0.0477 (2) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0409 (11) | 0.0355 (12) | 0.0461 (12) | 0.0032 (10) | 0.0189 (10) | −0.0023 (10) |
C2 | 0.0451 (13) | 0.0397 (13) | 0.0495 (13) | 0.0046 (11) | 0.0109 (10) | 0.0002 (11) |
C3 | 0.0609 (15) | 0.0332 (12) | 0.0526 (14) | 0.0031 (11) | 0.0205 (12) | 0.0031 (10) |
C4 | 0.0447 (12) | 0.0378 (13) | 0.0455 (12) | −0.0008 (10) | 0.0204 (10) | −0.0055 (10) |
C5 | 0.0425 (13) | 0.0461 (14) | 0.0567 (14) | 0.0027 (11) | 0.0132 (11) | 0.0048 (11) |
C6 | 0.0482 (13) | 0.0381 (13) | 0.0581 (15) | 0.0026 (11) | 0.0161 (11) | 0.0090 (11) |
C7 | 0.0551 (14) | 0.0400 (13) | 0.0518 (14) | −0.0005 (11) | 0.0250 (12) | −0.0037 (11) |
C8 | 0.0471 (13) | 0.0506 (15) | 0.0488 (14) | −0.0002 (11) | 0.0174 (11) | −0.0008 (11) |
C9 | 0.0424 (12) | 0.0519 (15) | 0.0475 (13) | 0.0001 (11) | 0.0147 (10) | 0.0013 (11) |
C10 | 0.0514 (14) | 0.0535 (15) | 0.0433 (13) | −0.0007 (12) | 0.0161 (11) | 0.0014 (11) |
C11 | 0.0479 (15) | 0.081 (2) | 0.0619 (17) | −0.0114 (14) | 0.0186 (12) | −0.0038 (15) |
C12 | 0.0443 (14) | 0.084 (2) | 0.0773 (19) | 0.0097 (14) | 0.0189 (13) | −0.0106 (17) |
C13 | 0.0541 (15) | 0.0622 (17) | 0.0695 (17) | 0.0086 (13) | 0.0191 (13) | −0.0076 (14) |
N1 | 0.0483 (12) | 0.0473 (12) | 0.0613 (13) | −0.0043 (10) | 0.0202 (10) | −0.0040 (10) |
N2 | 0.0696 (15) | 0.0529 (14) | 0.0540 (13) | −0.0085 (13) | 0.0114 (11) | 0.0022 (11) |
O1 | 0.0432 (9) | 0.0555 (11) | 0.0905 (14) | 0.0030 (8) | 0.0081 (9) | 0.0054 (10) |
O2 | 0.0639 (11) | 0.0529 (11) | 0.0763 (12) | −0.0058 (9) | 0.0392 (10) | 0.0029 (9) |
C14 | 0.0634 (16) | 0.0438 (15) | 0.0705 (17) | −0.0047 (12) | 0.0249 (14) | −0.0131 (13) |
O4 | 0.0781 (15) | 0.0586 (13) | 0.1134 (18) | 0.0129 (11) | 0.0232 (13) | 0.0019 (12) |
O5 | 0.0914 (16) | 0.0647 (14) | 0.1174 (19) | −0.0310 (13) | 0.0134 (14) | −0.0079 (13) |
S1 | 0.0405 (3) | 0.0382 (3) | 0.0612 (4) | 0.0001 (3) | 0.0177 (3) | −0.0009 (3) |
C1—C2 | 1.385 (3) | C9—C10 | 1.383 (3) |
C1—C6 | 1.393 (3) | C9—H9 | 0.9300 |
C1—S1 | 1.773 (2) | C10—C11 | 1.384 (4) |
C2—C3 | 1.391 (3) | C10—N2 | 1.477 (3) |
C2—H2 | 0.9300 | C11—C12 | 1.377 (4) |
C3—C4 | 1.391 (3) | C11—H11 | 0.9300 |
C3—H3 | 0.9300 | C12—C13 | 1.378 (4) |
C4—C5 | 1.390 (3) | C12—H12 | 0.9300 |
C4—C7 | 1.483 (3) | C13—H13 | 0.9300 |
C5—C6 | 1.377 (3) | N2—O4 | 1.212 (3) |
C5—H5 | 0.9300 | N2—O5 | 1.222 (3) |
C6—H6 | 0.9300 | O1—S1 | 1.4394 (18) |
C7—N1 | 1.274 (3) | O2—S1 | 1.446 (2) |
C7—H7 | 0.9300 | C14—S1 | 1.757 (3) |
C8—C9 | 1.396 (4) | C14—H14A | 0.9600 |
C8—C13 | 1.398 (3) | C14—H14B | 0.9600 |
C8—N1 | 1.415 (3) | C14—H14C | 0.9600 |
C2—C1—C6 | 120.9 (2) | C9—C10—N2 | 117.9 (2) |
C2—C1—S1 | 120.43 (17) | C11—C10—N2 | 119.1 (2) |
C6—C1—S1 | 118.68 (17) | C12—C11—C10 | 118.1 (3) |
C1—C2—C3 | 118.7 (2) | C12—C11—H11 | 121.0 |
C1—C2—H2 | 120.6 | C10—C11—H11 | 121.0 |
C3—C2—H2 | 120.6 | C11—C12—C13 | 120.8 (3) |
C4—C3—C2 | 121.0 (2) | C11—C12—H12 | 119.6 |
C4—C3—H3 | 119.5 | C13—C12—H12 | 119.6 |
C2—C3—H3 | 119.5 | C12—C13—C8 | 120.7 (3) |
C5—C4—C3 | 119.2 (2) | C12—C13—H13 | 119.7 |
C5—C4—C7 | 120.0 (2) | C8—C13—H13 | 119.7 |
C3—C4—C7 | 120.9 (2) | C7—N1—C8 | 120.8 (2) |
C6—C5—C4 | 120.6 (2) | O4—N2—O5 | 123.4 (3) |
C6—C5—H5 | 119.7 | O4—N2—C10 | 118.2 (2) |
C4—C5—H5 | 119.7 | O5—N2—C10 | 118.4 (3) |
C5—C6—C1 | 119.6 (2) | S1—C14—H14A | 109.5 |
C5—C6—H6 | 120.2 | S1—C14—H14B | 109.5 |
C1—C6—H6 | 120.2 | H14A—C14—H14B | 109.5 |
N1—C7—C4 | 120.7 (2) | S1—C14—H14C | 109.5 |
N1—C7—H7 | 119.7 | H14A—C14—H14C | 109.5 |
C4—C7—H7 | 119.7 | H14B—C14—H14C | 109.5 |
C9—C8—C13 | 119.4 (2) | O1—S1—O2 | 117.69 (12) |
C9—C8—N1 | 123.0 (2) | O1—S1—C14 | 109.00 (13) |
C13—C8—N1 | 117.5 (2) | O2—S1—C14 | 108.15 (13) |
C10—C9—C8 | 118.1 (2) | O1—S1—C1 | 109.01 (11) |
C10—C9—H9 | 120.9 | O2—S1—C1 | 108.14 (11) |
C8—C9—H9 | 120.9 | C14—S1—C1 | 103.97 (12) |
C9—C10—C11 | 123.0 (3) | ||
C6—C1—C2—C3 | −1.7 (4) | C10—C11—C12—C13 | −0.5 (4) |
S1—C1—C2—C3 | 178.49 (18) | C11—C12—C13—C8 | −1.4 (5) |
C1—C2—C3—C4 | 0.4 (4) | C9—C8—C13—C12 | 2.5 (4) |
C2—C3—C4—C5 | 1.1 (4) | N1—C8—C13—C12 | 179.3 (2) |
C2—C3—C4—C7 | −179.0 (2) | C4—C7—N1—C8 | 177.8 (2) |
C3—C4—C5—C6 | −1.4 (4) | C9—C8—N1—C7 | −38.7 (4) |
C7—C4—C5—C6 | 178.7 (2) | C13—C8—N1—C7 | 144.5 (2) |
C4—C5—C6—C1 | 0.1 (4) | C9—C10—N2—O4 | −3.1 (4) |
C2—C1—C6—C5 | 1.4 (4) | C11—C10—N2—O4 | 176.4 (2) |
S1—C1—C6—C5 | −178.75 (19) | C9—C10—N2—O5 | 177.9 (2) |
C5—C4—C7—N1 | 2.7 (3) | C11—C10—N2—O5 | −2.6 (4) |
C3—C4—C7—N1 | −177.3 (2) | C2—C1—S1—O1 | 1.1 (2) |
C13—C8—C9—C10 | −1.5 (4) | C6—C1—S1—O1 | −178.74 (19) |
N1—C8—C9—C10 | −178.2 (2) | C2—C1—S1—O2 | 130.2 (2) |
C8—C9—C10—C11 | −0.4 (4) | C6—C1—S1—O2 | −49.7 (2) |
C8—C9—C10—N2 | 179.1 (2) | C2—C1—S1—C14 | −115.1 (2) |
C9—C10—C11—C12 | 1.4 (4) | C6—C1—S1—C14 | 65.1 (2) |
N2—C10—C11—C12 | −178.1 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
C14—H14C···O1i | 0.96 | 2.42 | 3.380 (3) | 178 |
C12—H12···O5ii | 0.93 | 2.59 | 3.273 (4) | 131 |
C6—H6···O2iii | 0.93 | 2.52 | 3.442 (3) | 169 |
C5—H5···O4iv | 0.93 | 2.41 | 3.249 (3) | 150 |
C2—H2···O1 | 0.93 | 2.58 | 2.948 (3) | 104 |
Symmetry codes: (i) −x+5/2, y+1/2, −z+1/2; (ii) −x+1/2, y+1/2, −z−1/2; (iii) −x+2, −y+2, −z; (iv) x, y+1, z. |
Experimental details
Crystal data | |
Chemical formula | C14H12N2O4S |
Mr | 304.32 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 296 |
a, b, c (Å) | 12.707 (7), 8.669 (5), 14.257 (8) |
β (°) | 114.140 (5) |
V (Å3) | 1433.2 (14) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.24 |
Crystal size (mm) | 0.25 × 0.23 × 0.21 |
Data collection | |
Diffractometer | Bruker APEXII CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2004) |
Tmin, Tmax | 0.942, 0.951 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 9119, 2525, 1937 |
Rint | 0.026 |
(sin θ/λ)max (Å−1) | 0.596 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.037, 0.102, 1.02 |
No. of reflections | 2525 |
No. of parameters | 192 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.28, −0.21 |
Computer programs: APEX2 (Bruker, 2004), SAINT (Bruker, 2004), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
C14—H14C···O1i | 0.96 | 2.42 | 3.380 (3) | 178 |
C12—H12···O5ii | 0.93 | 2.59 | 3.273 (4) | 131 |
C6—H6···O2iii | 0.93 | 2.52 | 3.442 (3) | 169 |
C5—H5···O4iv | 0.93 | 2.41 | 3.249 (3) | 150 |
Symmetry codes: (i) −x+5/2, y+1/2, −z+1/2; (ii) −x+1/2, y+1/2, −z−1/2; (iii) −x+2, −y+2, −z; (iv) x, y+1, z. |
Acknowledgements
This project was sponsored by the ShanDong Province Science & Technology Innovation Foundation (People's Republic of China).
References
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Schiff base compounds have been of great interest owing to their wide range of biological activities. They have been found to possess pharmacological activities, such as anti-cancer (Villar et al., 2004), anti-bacterial (Venugopal & Jayashree, 2008), anti-inflammatory, anti-microbial and anti-viral (Wadher et al., 2009). As an extension of our work on the structural characterization of Schiff base compounds, the crystal structure of the title compound C14H12N2O4S is reported here. In this compound (Fig. 1), all bond lengths are within normal ranges (Allen et al., 1987) and comparable with the values observed in two closely related compounds (Qian & Cui, 2009; Qian & Liu, 2010). The dihedral angle between the two aromatic rings is 35.65 (12)°. The crystal packing is stabilized by weak C—H···O hydrogen bonds (Table 1) and aromatic π-π stacking interactions [minimum ring centroid–centroid distance, 3.697 (3)Å] (Fig. 2).