organic compounds
N-(2-Aminophenylsulfonyl)-N-(2-nitrophenylsulfonyl)methylamine
aCollege of Science, Qingdao Agricultural University, Qingdao 266109, People's Republic of China
*Correspondence e-mail: songzuwei2008@yahoo.cn
In the title molecule, C13H13N3O6S2, the two benzene rings form a dihedral angle of 28.59 (7)°. The crystal sructure exhibits weak intermolecular N—H⋯O, C—H⋯O and C—H⋯N hydrogen bonds and π–π interactions [centroid-to-centroid distance = 3.899 (3) Å].
Related literature
For applications of sulfonimide-containing compounds, see: Kamoshita et al. (1987); Zhang et al. (2007). For the of a related compound, see: Henschel et al. (1996).
Experimental
Crystal data
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Refinement
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Data collection: RAPID-AUTO (Rigaku, 2004); cell RAPID-AUTO; data reduction: RAPID-AUTO; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supporting information
10.1107/S1600536808028092/cv2436sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808028092/cv2436Isup2.hkl
A solution of 2-aminobenzene-1-sulfonyl chloride (10 mmol) 1.92 g dissolved in anhydrous CH2Cl2 (10 ml), and dropwise added over a period of 10 min to a solution of 2-nitro-N-methyl-benzenesulfonamide (10 mmol) 2.16g and EtN(i-Pr)2 (3 mmol) in CH2Cl2 (10 ml) at 273 K. The mixture was stirred at r.t. for 4 h. The organic phase was washed with 2N HCl twice, and dried over anhydrous Na2SO4. The solvent was removed and the residue was purified by flash
(3:1 Cyclohexane:Dichloromethane) to give 1 as a white solid (3.52 mg, 95 %). Single crystals suitable for X-ray measurements were obtained by recrystallization from ethanol and Dichloromethane at room temperature.H atoms were positioned geometrically and refined using a riding model, with N—H = 0.88 Å, C—H = 0.95 or 0.98 Å and with Uiso(H) = 1.2 (1.5 for methyl groups) Ueq(C,N).
Data collection: RAPID-AUTO (Rigaku, 2004); cell
RAPID-AUTO (Rigaku, 2004); data reduction: RAPID-AUTO (Rigaku, 2004); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. The molecular structure of (I), with atom labels and 40% probability displacement ellipsoids for non-H atoms. | |
Fig. 2. Packing diagram. |
C13H13N3O6S2 | F(000) = 1536 |
Mr = 371.38 | Dx = 1.654 Mg m−3 |
Orthorhombic, Pbca | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 37072 reflections |
a = 13.844 (3) Å | θ = 6.3–55.1° |
b = 12.942 (2) Å | µ = 0.40 mm−1 |
c = 16.645 (3) Å | T = 153 K |
V = 2982.2 (10) Å3 | Platelet, yellow |
Z = 8 | 0.60 × 0.56 × 0.08 mm |
Rigaku R-AXIS RAPID IP area-detector diffractometer | 2630 independent reflections |
Radiation source: Rotating anode | 2428 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.027 |
ω oscillation scans | θmax = 25.0°, θmin = 3.2° |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | h = −16→16 |
Tmin = 0.733, Tmax = 0.969 | k = −15→15 |
34829 measured reflections | l = −19→18 |
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)] = 0.032 | H-atom parameters constrained |
wR(F2) = 0.087 | w = 1/[σ2(Fo2) + (0.0473P)2 + 2.1978P] where P = (Fo2 + 2Fc2)/3 |
S = 1.08 | (Δ/σ)max < 0.001 |
2630 reflections | Δρmax = 0.42 e Å−3 |
218 parameters | Δρmin = −0.39 e Å−3 |
0 restraints | Extinction correction: SHELXTL (Sheldrick, 2001), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0018 (3) |
C13H13N3O6S2 | V = 2982.2 (10) Å3 |
Mr = 371.38 | Z = 8 |
Orthorhombic, Pbca | Mo Kα radiation |
a = 13.844 (3) Å | µ = 0.40 mm−1 |
b = 12.942 (2) Å | T = 153 K |
c = 16.645 (3) Å | 0.60 × 0.56 × 0.08 mm |
Rigaku R-AXIS RAPID IP area-detector diffractometer | 2630 independent reflections |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | 2428 reflections with I > 2σ(I) |
Tmin = 0.733, Tmax = 0.969 | Rint = 0.027 |
34829 measured reflections |
R[F2 > 2σ(F2)] = 0.032 | 0 restraints |
wR(F2) = 0.087 | H-atom parameters constrained |
S = 1.08 | Δρmax = 0.42 e Å−3 |
2630 reflections | Δρmin = −0.39 e Å−3 |
218 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 | ||
S1 | 0.22770 (3) | 0.20009 (3) | 0.06984 (2) | 0.01845 (14) | |
S2 | 0.43344 (3) | 0.22433 (4) | 0.04145 (2) | 0.01991 (15) | |
O1 | 0.49675 (13) | 0.12116 (13) | −0.20069 (10) | 0.0487 (5) | |
O2 | 0.40368 (12) | 0.08365 (11) | −0.10127 (9) | 0.0364 (4) | |
O3 | 0.51339 (9) | 0.15580 (11) | 0.03241 (8) | 0.0281 (3) | |
O4 | 0.43340 (9) | 0.29881 (11) | 0.10485 (8) | 0.0275 (3) | |
O5 | 0.16079 (10) | 0.12669 (11) | 0.03769 (8) | 0.0288 (3) | |
O6 | 0.23132 (9) | 0.30186 (10) | 0.03747 (8) | 0.0243 (3) | |
N1 | 0.44722 (12) | 0.14579 (12) | −0.14329 (9) | 0.0266 (4) | |
N2 | 0.33660 (11) | 0.14908 (11) | 0.05243 (9) | 0.0214 (3) | |
N3 | 0.14942 (13) | 0.03260 (13) | 0.19054 (11) | 0.0366 (4) | |
H3B | 0.1590 | 0.0188 | 0.1394 | 0.044* | |
H3C | 0.1251 | −0.0150 | 0.2224 | 0.044* | |
C1 | 0.43468 (12) | 0.25628 (14) | −0.12717 (11) | 0.0211 (4) | |
C2 | 0.43337 (13) | 0.31966 (16) | −0.19394 (11) | 0.0268 (4) | |
H2A | 0.4441 | 0.2917 | −0.2460 | 0.032* | |
C3 | 0.41632 (14) | 0.42395 (16) | −0.18432 (12) | 0.0301 (5) | |
H3D | 0.4138 | 0.4678 | −0.2300 | 0.036* | |
C4 | 0.40295 (14) | 0.46490 (15) | −0.10843 (12) | 0.0298 (4) | |
H4B | 0.3924 | 0.5370 | −0.1020 | 0.036* | |
C5 | 0.40499 (13) | 0.40078 (15) | −0.04174 (11) | 0.0238 (4) | |
H5B | 0.3961 | 0.4295 | 0.0102 | 0.029* | |
C6 | 0.41971 (12) | 0.29552 (14) | −0.04974 (11) | 0.0186 (4) | |
C7 | 0.34860 (16) | 0.03595 (15) | 0.06305 (13) | 0.0347 (5) | |
H7A | 0.4155 | 0.0166 | 0.0511 | 0.052* | |
H7B | 0.3049 | −0.0006 | 0.0264 | 0.052* | |
H7C | 0.3333 | 0.0171 | 0.1186 | 0.052* | |
C8 | 0.21121 (13) | 0.20842 (14) | 0.17402 (11) | 0.0211 (4) | |
C9 | 0.23455 (13) | 0.30465 (15) | 0.20835 (12) | 0.0255 (4) | |
H9A | 0.2607 | 0.3580 | 0.1758 | 0.031* | |
C10 | 0.21958 (14) | 0.32160 (18) | 0.28892 (12) | 0.0328 (5) | |
H10A | 0.2351 | 0.3864 | 0.3125 | 0.039* | |
C11 | 0.18139 (14) | 0.24220 (19) | 0.33523 (12) | 0.0359 (5) | |
H11A | 0.1707 | 0.2536 | 0.3909 | 0.043* | |
C12 | 0.15875 (14) | 0.14838 (18) | 0.30301 (12) | 0.0340 (5) | |
H12A | 0.1334 | 0.0957 | 0.3367 | 0.041* | |
C13 | 0.17225 (13) | 0.12809 (15) | 0.22050 (12) | 0.0272 (4) |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0183 (2) | 0.0203 (2) | 0.0167 (2) | 0.00124 (16) | 0.00013 (16) | −0.00004 (16) |
S2 | 0.0185 (2) | 0.0241 (3) | 0.0171 (2) | 0.00214 (16) | −0.00052 (16) | −0.00013 (17) |
O1 | 0.0593 (11) | 0.0436 (10) | 0.0431 (9) | 0.0052 (8) | 0.0250 (8) | −0.0135 (7) |
O2 | 0.0501 (9) | 0.0231 (7) | 0.0360 (8) | −0.0032 (7) | 0.0085 (7) | −0.0021 (6) |
O3 | 0.0214 (7) | 0.0326 (8) | 0.0304 (7) | 0.0080 (6) | 0.0002 (5) | 0.0034 (6) |
O4 | 0.0305 (7) | 0.0326 (8) | 0.0195 (7) | −0.0013 (6) | −0.0024 (5) | −0.0053 (5) |
O5 | 0.0265 (7) | 0.0303 (7) | 0.0297 (7) | −0.0043 (6) | −0.0045 (5) | −0.0064 (6) |
O6 | 0.0249 (7) | 0.0236 (7) | 0.0246 (7) | 0.0045 (5) | 0.0016 (5) | 0.0051 (5) |
N1 | 0.0301 (8) | 0.0271 (9) | 0.0226 (8) | 0.0023 (7) | 0.0029 (7) | −0.0057 (7) |
N2 | 0.0223 (8) | 0.0175 (8) | 0.0243 (7) | 0.0030 (6) | 0.0058 (6) | 0.0015 (6) |
N3 | 0.0400 (10) | 0.0259 (9) | 0.0438 (10) | 0.0013 (8) | 0.0158 (8) | 0.0048 (8) |
C1 | 0.0195 (9) | 0.0215 (9) | 0.0222 (9) | −0.0018 (7) | 0.0022 (7) | −0.0026 (7) |
C2 | 0.0257 (10) | 0.0352 (11) | 0.0194 (9) | −0.0058 (8) | 0.0032 (7) | 0.0002 (8) |
C3 | 0.0301 (10) | 0.0315 (11) | 0.0287 (10) | −0.0056 (8) | 0.0013 (8) | 0.0107 (8) |
C4 | 0.0310 (10) | 0.0213 (10) | 0.0371 (11) | −0.0013 (8) | 0.0021 (9) | 0.0041 (8) |
C5 | 0.0235 (9) | 0.0227 (9) | 0.0251 (9) | −0.0004 (7) | 0.0024 (7) | −0.0027 (7) |
C6 | 0.0163 (8) | 0.0220 (9) | 0.0176 (9) | −0.0013 (7) | 0.0014 (7) | 0.0004 (7) |
C7 | 0.0367 (11) | 0.0204 (10) | 0.0470 (12) | 0.0061 (9) | 0.0130 (10) | 0.0079 (9) |
C8 | 0.0174 (8) | 0.0287 (10) | 0.0171 (9) | 0.0045 (7) | 0.0010 (7) | 0.0007 (7) |
C9 | 0.0194 (9) | 0.0316 (11) | 0.0256 (10) | 0.0026 (8) | 0.0009 (7) | −0.0022 (8) |
C10 | 0.0245 (10) | 0.0453 (12) | 0.0285 (10) | 0.0031 (9) | −0.0014 (8) | −0.0121 (9) |
C11 | 0.0248 (10) | 0.0614 (15) | 0.0215 (10) | 0.0066 (10) | 0.0013 (8) | 0.0007 (10) |
C12 | 0.0254 (10) | 0.0476 (13) | 0.0289 (10) | 0.0092 (9) | 0.0078 (8) | 0.0112 (9) |
C13 | 0.0205 (9) | 0.0299 (10) | 0.0311 (10) | 0.0062 (8) | 0.0045 (8) | 0.0078 (8) |
S1—O6 | 1.4239 (13) | C3—C4 | 1.382 (3) |
S1—O5 | 1.4307 (13) | C3—H3D | 0.9500 |
S1—N2 | 1.6711 (15) | C4—C5 | 1.386 (3) |
S1—C8 | 1.7523 (18) | C4—H4B | 0.9500 |
S2—O3 | 1.4263 (13) | C5—C6 | 1.384 (3) |
S2—O4 | 1.4291 (14) | C5—H5B | 0.9500 |
S2—N2 | 1.6671 (15) | C7—H7A | 0.9800 |
S2—C6 | 1.7859 (18) | C7—H7B | 0.9800 |
O1—N1 | 1.218 (2) | C7—H7C | 0.9800 |
O2—N1 | 1.224 (2) | C8—C13 | 1.404 (3) |
N1—C1 | 1.465 (2) | C8—C9 | 1.408 (3) |
N2—C7 | 1.484 (2) | C9—C10 | 1.375 (3) |
N3—C13 | 1.370 (3) | C9—H9A | 0.9500 |
N3—H3B | 0.8800 | C10—C11 | 1.389 (3) |
N3—H3C | 0.8800 | C10—H10A | 0.9500 |
C1—C2 | 1.381 (3) | C11—C12 | 1.364 (3) |
C1—C6 | 1.401 (2) | C11—H11A | 0.9500 |
C2—C3 | 1.380 (3) | C12—C13 | 1.411 (3) |
C2—H2A | 0.9500 | C12—H12A | 0.9500 |
Cg1···Cg2i | 3.899 (3) | ||
O6—S1—O5 | 119.70 (8) | C5—C4—H4B | 120.0 |
O6—S1—N2 | 105.55 (8) | C6—C5—C4 | 121.02 (18) |
O5—S1—N2 | 104.89 (8) | C6—C5—H5B | 119.5 |
O6—S1—C8 | 108.79 (8) | C4—C5—H5B | 119.5 |
O5—S1—C8 | 109.06 (8) | C5—C6—C1 | 117.86 (17) |
N2—S1—C8 | 108.27 (8) | C5—C6—S2 | 116.22 (14) |
O3—S2—O4 | 119.85 (8) | C1—C6—S2 | 125.40 (14) |
O3—S2—N2 | 105.80 (8) | N2—C7—H7A | 109.5 |
O4—S2—N2 | 108.22 (8) | N2—C7—H7B | 109.5 |
O3—S2—C6 | 108.28 (8) | H7A—C7—H7B | 109.5 |
O4—S2—C6 | 106.24 (8) | N2—C7—H7C | 109.5 |
N2—S2—C6 | 107.99 (8) | H7A—C7—H7C | 109.5 |
O1—N1—O2 | 123.58 (17) | H7B—C7—H7C | 109.5 |
O1—N1—C1 | 117.75 (16) | C13—C8—C9 | 121.31 (17) |
O2—N1—C1 | 118.56 (15) | C13—C8—S1 | 123.36 (15) |
C7—N2—S2 | 119.96 (13) | C9—C8—S1 | 115.23 (14) |
C7—N2—S1 | 118.04 (12) | C10—C9—C8 | 120.18 (19) |
S2—N2—S1 | 120.91 (9) | C10—C9—H9A | 119.9 |
C13—N3—H3B | 120.0 | C8—C9—H9A | 119.9 |
C13—N3—H3C | 120.0 | C9—C10—C11 | 118.7 (2) |
H3B—N3—H3C | 120.0 | C9—C10—H10A | 120.6 |
C2—C1—C6 | 121.53 (18) | C11—C10—H10A | 120.6 |
C2—C1—N1 | 115.70 (16) | C12—C11—C10 | 121.86 (19) |
C6—C1—N1 | 122.68 (16) | C12—C11—H11A | 119.1 |
C3—C2—C1 | 119.33 (18) | C10—C11—H11A | 119.1 |
C3—C2—H2A | 120.3 | C11—C12—C13 | 121.21 (19) |
C1—C2—H2A | 120.3 | C11—C12—H12A | 119.4 |
C2—C3—C4 | 120.27 (18) | C13—C12—H12A | 119.4 |
C2—C3—H3D | 119.9 | N3—C13—C8 | 123.80 (18) |
C4—C3—H3D | 119.9 | N3—C13—C12 | 119.46 (18) |
C3—C4—C5 | 119.96 (19) | C8—C13—C12 | 116.72 (19) |
C3—C4—H4B | 120.0 | ||
O3—S2—N2—C7 | 8.83 (17) | C2—C1—C6—S2 | −172.37 (14) |
O4—S2—N2—C7 | −120.79 (15) | N1—C1—C6—S2 | 11.1 (2) |
C6—S2—N2—C7 | 124.60 (15) | O3—S2—C6—C5 | −134.60 (14) |
O3—S2—N2—S1 | 176.65 (10) | O4—S2—C6—C5 | −4.64 (16) |
O4—S2—N2—S1 | 47.02 (12) | N2—S2—C6—C5 | 111.28 (15) |
C6—S2—N2—S1 | −67.59 (12) | O3—S2—C6—C1 | 36.88 (18) |
O6—S1—N2—C7 | −166.74 (14) | O4—S2—C6—C1 | 166.83 (15) |
O5—S1—N2—C7 | −39.44 (16) | N2—S2—C6—C1 | −77.25 (16) |
C8—S1—N2—C7 | 76.90 (16) | O6—S1—C8—C13 | 157.41 (15) |
O6—S1—N2—S2 | 25.21 (12) | O5—S1—C8—C13 | 25.25 (18) |
O5—S1—N2—S2 | 152.52 (10) | N2—S1—C8—C13 | −88.35 (16) |
C8—S1—N2—S2 | −91.14 (11) | O6—S1—C8—C9 | −18.95 (16) |
O1—N1—C1—C2 | 32.8 (2) | O5—S1—C8—C9 | −151.11 (13) |
O2—N1—C1—C2 | −143.45 (18) | N2—S1—C8—C9 | 95.29 (14) |
O1—N1—C1—C6 | −150.48 (18) | C13—C8—C9—C10 | 0.1 (3) |
O2—N1—C1—C6 | 33.2 (3) | S1—C8—C9—C10 | 176.58 (15) |
C6—C1—C2—C3 | −0.4 (3) | C8—C9—C10—C11 | 0.1 (3) |
N1—C1—C2—C3 | 176.31 (17) | C9—C10—C11—C12 | 0.2 (3) |
C1—C2—C3—C4 | 1.5 (3) | C10—C11—C12—C13 | −0.7 (3) |
C2—C3—C4—C5 | −1.1 (3) | C9—C8—C13—N3 | −179.11 (17) |
C3—C4—C5—C6 | −0.4 (3) | S1—C8—C13—N3 | 4.8 (3) |
C4—C5—C6—C1 | 1.4 (3) | C9—C8—C13—C12 | −0.6 (3) |
C4—C5—C6—S2 | 173.57 (15) | S1—C8—C13—C12 | −176.77 (14) |
C2—C1—C6—C5 | −1.0 (3) | C11—C12—C13—N3 | 179.44 (19) |
N1—C1—C6—C5 | −177.53 (16) | C11—C12—C13—C8 | 0.9 (3) |
Symmetry code: (i) −x−1/2, y−1/2, z−1. |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3C···O1ii | 0.88 | 2.52 | 3.366 (2) | 160 |
C12—H12A···O2ii | 0.95 | 2.59 | 3.508 (3) | 162 |
C9—H9A···N3iii | 0.95 | 2.59 | 3.372 (3) | 140 |
Symmetry codes: (ii) −x+1/2, −y, z+1/2; (iii) −x+1/2, y+1/2, z. |
Experimental details
Crystal data | |
Chemical formula | C13H13N3O6S2 |
Mr | 371.38 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 153 |
a, b, c (Å) | 13.844 (3), 12.942 (2), 16.645 (3) |
V (Å3) | 2982.2 (10) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.40 |
Crystal size (mm) | 0.60 × 0.56 × 0.08 |
Data collection | |
Diffractometer | Rigaku R-AXIS RAPID IP area-detector diffractometer |
Absorption correction | Multi-scan (ABSCOR; Higashi, 1995) |
Tmin, Tmax | 0.733, 0.969 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 34829, 2630, 2428 |
Rint | 0.027 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.032, 0.087, 1.08 |
No. of reflections | 2630 |
No. of parameters | 218 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.42, −0.39 |
Computer programs: RAPID-AUTO (Rigaku, 2004), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H3C···O1ii | 0.88 | 2.52 | 3.366 (2) | 160.4 |
C12—H12A···O2ii | 0.95 | 2.59 | 3.508 (3) | 162.0 |
C9—H9A···N3iii | 0.95 | 2.59 | 3.372 (3) | 139.7 |
Symmetry codes: (ii) −x+1/2, −y, z+1/2; (iii) −x+1/2, y+1/2, z. |
References
Henschel, D., Hiemisch, O., Blaschette, A. & Jones, P. G. (1996). Z. Naturforsch. Teil B, 51, 1313–1315. CAS Google Scholar
Higashi, T. (1995). ABSCOR. Rigaku Corporation, Tokyo, Japan. Google Scholar
Kamoshita, K., Matsumoto, H. & Nagano, E. (1987). US Patent US 4 670 046. Google Scholar
Rigaku (2004). RAPID-AUTO. Rigaku Corporation, Takyo, Japan. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Zhang, Z. B., Zhou, S. Y. & Nie, J. (2007). J. Mol. Catal. A Chem. 265, 9-14. Web of Science CrossRef CAS Google Scholar
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Many compounds containing sulfonimide groups possess a broad spectrum of biological activities and can be widely used as herbicides (Kamoshita et al., 1987) or catalysts (Zhang et al., 2007). Herein we report the crystal structure of the title compound, (I).
In (I) (Fig. 1), all bond lengths and angles are in a good agreement with those reported previously for related compounds (Henschel et al., 1996). Two benzene rings (C1–C6 and C8–C13) form a dihedral angle of 28.59 (7)°.
The crystal packing exhibits π–π interactions (Table 1) and weak intermolecular N—H···O, C—H···N and C—H···O hydrogen bonds (Table 2).