organic compounds
4-{[4-(Dimethylamino)benzylidene]amino}benzenesulfonamide
aDepartment of Chemistry, Harran University, 63300 Şanlıurfa, Turkey, bScience Education Department, Aksaray University, 68100 Aksaray, Turkey, and cDepartment of Physics, Hacettepe University, 06800 Beytepe, Ankara, Turkey
*Correspondence e-mail: merzifon@hacettepe.edu.tr
The title Schiff base compound, C15H17N3O2S, is non-planar with a dihedral angle of 69.88 (4)° between the planes of the benzene rings. In the crystal, pairs of N—H⋯N hydrogen bonds, between the sulfonamide nitrogen-H atom and the azomethine N atom, link the molecules into inversion dimers, forming R22(16) ring motifs. These dimers are linked by N—H⋯O hydrogen bonds, between the sulfonamide nitrogen-H atom and one sulfonamide O atom, forming sheets lying parallel to (100). Within the sheets there are weak parallel slipped π–π interactions involving inversion-related benzenesulfonamide rings [centroid–centroid distance = 3.8800 (9) Å; normal distance = 3.4796 (6) Å; slippage = 1.717 Å].
CCDC reference: 1005250
Related literature
For the biological and physical properties of ); Domagk (1935); Khalil et al. (2009); Sharaby (2007); Lin et al. (2008); Maren (1967); Mohamed et al. (2013); Saluja et al. (2014); Supuran et al. (1996); Türkmen et al. (2005). For related structures, see: Idemudia et al. (2012); Loughrey et al. (2009). For bond-length data, see: Allen et al. (1987). For graph-set analysis, see: Bernstein et al. (1995).
and their derivatives and for their pharmacological applications, see: Chohan & Shad (2012Experimental
Crystal data
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Data collection: APEX2 (Bruker, 2012); cell SAINT (Bruker, 2012); 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, 2012); software used to prepare material for publication: WinGX (Farrugia, 2012) and PLATON (Spek, 2009).
Supporting information
CCDC reference: 1005250
10.1107/S1600536814012136/su2738sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536814012136/su2738Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536814012136/su2738Isup3.cml
The title compound was synthesized according to the literature method with some modifications (Khalil et al., 2009; Sharaby, 2007; Lin et al., 2008; Supuran et al., 1996; Mohamed et al., 2013). Sulfonamide (0.172 g, 1.0 mmol) in absolute ethanol (20 ml) was added to 4-(dimethylamino)benzaldehyde (0.149 g, 1.0 mmol) in absolute ethanol (20 ml), and 2 drops of formic acid were added as catalyst. The mixture was refluxed for 3-4 h, followed by cooling to room temperature. The resulting crystals were filtered in vacuum (yield: 85%). Crystals suitable for X-ray analysis were grown by slow evaporation of a methanol/ethanol/chloroform (3:1:1) solution, giving yellow prismatic crystals.
Atoms H31, H32 (for NH2) and H9 (for CH) were located in a difference Fourier map and freely refined. The remaining C-bound H-atoms were positioned geometrically with C—H = 0.93 and 0.96 Å for aromatic and methyl H-atoms, respectively, and constrained to ride on their parent atoms, with Uiso(H) = 1.5Ueq(C-methyl) and = 1.2Ueq(C) for other H-atoms.
Data collection: APEX2 (Bruker, 2012); cell
SAINT (Bruker, 2012); data reduction: SAINT (Bruker, 2012); 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, 2012); software used to prepare material for publication: WinGX (Farrugia, 2012) and PLATON (Spek, 2009).C15H17N3O2S | F(000) = 640 |
Mr = 303.38 | Dx = 1.370 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 9899 reflections |
a = 16.8982 (5) Å | θ = 2.3–28.3° |
b = 9.0273 (3) Å | µ = 0.23 mm−1 |
c = 9.8405 (3) Å | T = 296 K |
β = 101.552 (3)° | Prism, yellow |
V = 1470.71 (8) Å3 | 0.35 × 0.22 × 0.15 mm |
Z = 4 |
Bruker SMART BREEZE CCD diffractometer | 3644 independent reflections |
Radiation source: fine-focus sealed tube | 3133 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.025 |
ϕ and ω scans | θmax = 28.3°, θmin = 1.2° |
Absorption correction: multi-scan (SADABS; Bruker, 2012) | h = −22→22 |
Tmin = 0.924, Tmax = 0.987 | k = −7→12 |
19398 measured reflections | l = −11→13 |
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)] = 0.040 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.116 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.08 | w = 1/[σ2(Fo2) + (0.0572P)2 + 0.485P] where P = (Fo2 + 2Fc2)/3 |
3644 reflections | (Δ/σ)max = 0.001 |
204 parameters | Δρmax = 0.37 e Å−3 |
0 restraints | Δρmin = −0.29 e Å−3 |
C15H17N3O2S | V = 1470.71 (8) Å3 |
Mr = 303.38 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 16.8982 (5) Å | µ = 0.23 mm−1 |
b = 9.0273 (3) Å | T = 296 K |
c = 9.8405 (3) Å | 0.35 × 0.22 × 0.15 mm |
β = 101.552 (3)° |
Bruker SMART BREEZE CCD diffractometer | 3644 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2012) | 3133 reflections with I > 2σ(I) |
Tmin = 0.924, Tmax = 0.987 | Rint = 0.025 |
19398 measured reflections |
R[F2 > 2σ(F2)] = 0.040 | 0 restraints |
wR(F2) = 0.116 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.08 | Δρmax = 0.37 e Å−3 |
3644 reflections | Δρmin = −0.29 e Å−3 |
204 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 | 0.329465 (19) | 0.28756 (4) | 0.08578 (4) | 0.03754 (13) | |
O1 | 0.30989 (7) | 0.13297 (14) | 0.08516 (15) | 0.0608 (4) | |
O2 | 0.31107 (7) | 0.37779 (18) | 0.19404 (13) | 0.0613 (4) | |
N1 | 1.05511 (8) | 0.16049 (17) | 0.10070 (15) | 0.0479 (3) | |
N2 | 0.68218 (7) | 0.32679 (14) | 0.09636 (13) | 0.0364 (3) | |
N3 | 0.28201 (7) | 0.35422 (17) | −0.05859 (14) | 0.0385 (3) | |
H31 | 0.2899 (12) | 0.441 (3) | −0.069 (2) | 0.058 (6)* | |
H32 | 0.2864 (13) | 0.300 (2) | −0.125 (2) | 0.059 (6)* | |
C1 | 1.10626 (9) | 0.0462 (2) | 0.17517 (18) | 0.0516 (4) | |
H1A | 1.1559 | 0.0414 | 0.1419 | 0.077* | |
H1B | 1.0791 | −0.0476 | 0.1606 | 0.077* | |
H1C | 1.1178 | 0.0690 | 0.2724 | 0.077* | |
C2 | 1.09209 (11) | 0.2638 (2) | 0.0203 (2) | 0.0611 (5) | |
H2A | 1.1451 | 0.2294 | 0.0148 | 0.092* | |
H2B | 1.0961 | 0.3593 | 0.0640 | 0.092* | |
H2C | 1.0597 | 0.2714 | −0.0715 | 0.092* | |
C3 | 0.97582 (8) | 0.17399 (17) | 0.10927 (15) | 0.0350 (3) | |
C4 | 0.92808 (9) | 0.29053 (16) | 0.04153 (18) | 0.0410 (3) | |
H4 | 0.9514 | 0.3603 | −0.0079 | 0.049* | |
C5 | 0.84765 (9) | 0.30314 (16) | 0.04715 (17) | 0.0394 (3) | |
H5 | 0.8178 | 0.3817 | 0.0021 | 0.047* | |
C6 | 0.81000 (8) | 0.20063 (16) | 0.11890 (15) | 0.0347 (3) | |
C7 | 0.85645 (9) | 0.08345 (18) | 0.18336 (16) | 0.0405 (3) | |
H7 | 0.8321 | 0.0119 | 0.2292 | 0.049* | |
C8 | 0.93761 (9) | 0.07021 (18) | 0.18125 (15) | 0.0405 (3) | |
H8 | 0.9672 | −0.0079 | 0.2277 | 0.049* | |
C9 | 0.72524 (8) | 0.21083 (16) | 0.12705 (16) | 0.0363 (3) | |
H9 | 0.7038 (10) | 0.128 (2) | 0.1561 (17) | 0.041 (4)* | |
C10 | 0.59860 (8) | 0.31581 (15) | 0.09662 (14) | 0.0321 (3) | |
C11 | 0.55164 (9) | 0.20677 (16) | 0.01965 (17) | 0.0408 (3) | |
H11 | 0.5755 | 0.1385 | −0.0305 | 0.049* | |
C12 | 0.46948 (9) | 0.19932 (17) | 0.01722 (18) | 0.0416 (3) | |
H12 | 0.4382 | 0.1260 | −0.0340 | 0.050* | |
C13 | 0.43431 (8) | 0.30106 (15) | 0.09101 (14) | 0.0321 (3) | |
C14 | 0.47978 (8) | 0.41333 (17) | 0.16501 (15) | 0.0363 (3) | |
H14 | 0.4554 | 0.4829 | 0.2129 | 0.044* | |
C15 | 0.56207 (8) | 0.42089 (17) | 0.16691 (15) | 0.0372 (3) | |
H15 | 0.5928 | 0.4965 | 0.2154 | 0.045* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.02420 (17) | 0.0491 (2) | 0.0407 (2) | 0.00001 (13) | 0.00964 (14) | 0.00972 (15) |
O1 | 0.0358 (6) | 0.0526 (7) | 0.0930 (10) | −0.0060 (5) | 0.0103 (6) | 0.0303 (7) |
O2 | 0.0387 (6) | 0.1018 (11) | 0.0477 (7) | 0.0046 (7) | 0.0191 (5) | −0.0089 (7) |
N1 | 0.0281 (6) | 0.0592 (8) | 0.0583 (8) | 0.0037 (6) | 0.0131 (6) | 0.0048 (7) |
N2 | 0.0254 (5) | 0.0400 (6) | 0.0449 (7) | −0.0016 (5) | 0.0095 (5) | 0.0025 (5) |
N3 | 0.0281 (6) | 0.0441 (7) | 0.0425 (7) | 0.0011 (5) | 0.0055 (5) | 0.0067 (6) |
C1 | 0.0308 (7) | 0.0734 (12) | 0.0487 (9) | 0.0107 (7) | 0.0030 (6) | −0.0042 (8) |
C2 | 0.0372 (8) | 0.0600 (11) | 0.0927 (15) | −0.0065 (8) | 0.0292 (9) | 0.0010 (10) |
C3 | 0.0274 (6) | 0.0421 (7) | 0.0356 (7) | −0.0013 (5) | 0.0069 (5) | −0.0062 (6) |
C4 | 0.0335 (7) | 0.0382 (8) | 0.0544 (9) | −0.0018 (6) | 0.0164 (6) | 0.0037 (6) |
C5 | 0.0324 (7) | 0.0362 (7) | 0.0508 (9) | 0.0038 (5) | 0.0116 (6) | 0.0060 (6) |
C6 | 0.0259 (6) | 0.0396 (7) | 0.0390 (7) | −0.0001 (5) | 0.0073 (5) | −0.0001 (6) |
C7 | 0.0330 (7) | 0.0456 (8) | 0.0444 (8) | 0.0016 (6) | 0.0116 (6) | 0.0103 (6) |
C8 | 0.0322 (7) | 0.0481 (8) | 0.0410 (8) | 0.0073 (6) | 0.0068 (6) | 0.0073 (6) |
C9 | 0.0281 (6) | 0.0391 (8) | 0.0426 (8) | −0.0020 (5) | 0.0092 (6) | 0.0047 (6) |
C10 | 0.0245 (6) | 0.0363 (7) | 0.0357 (7) | −0.0003 (5) | 0.0066 (5) | 0.0051 (5) |
C11 | 0.0306 (7) | 0.0387 (8) | 0.0541 (9) | 0.0017 (5) | 0.0110 (6) | −0.0104 (6) |
C12 | 0.0307 (7) | 0.0386 (8) | 0.0543 (9) | −0.0042 (5) | 0.0055 (6) | −0.0099 (6) |
C13 | 0.0241 (6) | 0.0385 (7) | 0.0340 (7) | 0.0007 (5) | 0.0067 (5) | 0.0051 (5) |
C14 | 0.0319 (7) | 0.0419 (7) | 0.0368 (7) | 0.0011 (6) | 0.0111 (5) | −0.0053 (6) |
C15 | 0.0309 (6) | 0.0419 (8) | 0.0385 (7) | −0.0056 (6) | 0.0068 (5) | −0.0073 (6) |
S1—O1 | 1.4340 (13) | C4—H4 | 0.9300 |
S1—O2 | 1.4239 (13) | C5—H5 | 0.9300 |
S1—N3 | 1.6023 (13) | C6—C5 | 1.393 (2) |
S1—C13 | 1.7664 (13) | C6—C7 | 1.392 (2) |
N1—C1 | 1.447 (2) | C6—C9 | 1.4534 (18) |
N1—C2 | 1.444 (2) | C7—C8 | 1.3809 (19) |
N2—C9 | 1.2762 (19) | C7—H7 | 0.9300 |
N2—C10 | 1.4163 (16) | C8—H8 | 0.9300 |
N3—H31 | 0.81 (2) | C9—H9 | 0.904 (18) |
N3—H32 | 0.83 (2) | C10—C15 | 1.389 (2) |
C1—H1A | 0.9600 | C10—C11 | 1.390 (2) |
C1—H1B | 0.9600 | C11—H11 | 0.9300 |
C1—H1C | 0.9600 | C12—C11 | 1.385 (2) |
C2—H2A | 0.9600 | C12—H12 | 0.9300 |
C2—H2B | 0.9600 | C13—C12 | 1.377 (2) |
C2—H2C | 0.9600 | C13—C14 | 1.3869 (19) |
C3—N1 | 1.3647 (18) | C14—C15 | 1.3887 (18) |
C3—C4 | 1.409 (2) | C14—H14 | 0.9300 |
C3—C8 | 1.407 (2) | C15—H15 | 0.9300 |
C4—C5 | 1.376 (2) | ||
O2—S1—O1 | 118.37 (9) | C4—C5—H5 | 119.3 |
O1—S1—N3 | 106.72 (8) | C6—C5—H5 | 119.3 |
O1—S1—C13 | 107.24 (7) | C5—C6—C9 | 122.76 (13) |
O2—S1—N3 | 107.64 (8) | C7—C6—C5 | 117.57 (13) |
O2—S1—C13 | 107.86 (7) | C7—C6—C9 | 119.67 (13) |
N3—S1—C13 | 108.72 (7) | C6—C7—H7 | 119.0 |
C2—N1—C1 | 117.24 (14) | C8—C7—C6 | 122.00 (14) |
C3—N1—C1 | 121.77 (14) | C8—C7—H7 | 119.0 |
C3—N1—C2 | 120.95 (14) | C3—C8—H8 | 119.8 |
C9—N2—C10 | 117.63 (12) | C7—C8—C3 | 120.48 (14) |
S1—N3—H31 | 114.2 (14) | C7—C8—H8 | 119.8 |
S1—N3—H32 | 111.8 (14) | N2—C9—C6 | 124.09 (13) |
H32—N3—H31 | 116 (2) | N2—C9—H9 | 120.7 (11) |
N1—C1—H1A | 109.5 | C6—C9—H9 | 115.2 (11) |
N1—C1—H1B | 109.5 | C11—C10—N2 | 120.62 (13) |
N1—C1—H1C | 109.5 | C15—C10—N2 | 119.72 (12) |
H1A—C1—H1B | 109.5 | C15—C10—C11 | 119.52 (12) |
H1A—C1—H1C | 109.5 | C10—C11—H11 | 119.8 |
H1B—C1—H1C | 109.5 | C12—C11—C10 | 120.31 (13) |
N1—C2—H2A | 109.5 | C12—C11—H11 | 119.8 |
N1—C2—H2B | 109.5 | C11—C12—H12 | 120.2 |
N1—C2—H2C | 109.5 | C13—C12—C11 | 119.69 (13) |
H2A—C2—H2B | 109.5 | C13—C12—H12 | 120.2 |
H2A—C2—H2C | 109.5 | C12—C13—S1 | 118.35 (11) |
H2B—C2—H2C | 109.5 | C12—C13—C14 | 120.80 (12) |
N1—C3—C4 | 120.90 (14) | C14—C13—S1 | 120.84 (11) |
N1—C3—C8 | 121.80 (14) | C13—C14—C15 | 119.40 (13) |
C8—C3—C4 | 117.27 (12) | C13—C14—H14 | 120.3 |
C3—C4—H4 | 119.4 | C15—C14—H14 | 120.3 |
C5—C4—C3 | 121.27 (13) | C10—C15—H15 | 119.9 |
C5—C4—H4 | 119.4 | C14—C15—C10 | 120.22 (13) |
C4—C5—C6 | 121.37 (14) | C14—C15—H15 | 119.9 |
O1—S1—C13—C12 | 37.32 (14) | C7—C6—C5—C4 | −0.9 (2) |
O1—S1—C13—C14 | −144.13 (13) | C9—C6—C5—C4 | 179.91 (14) |
O2—S1—C13—C12 | 165.83 (13) | C5—C6—C7—C8 | 2.1 (2) |
O2—S1—C13—C14 | −15.62 (14) | C9—C6—C7—C8 | −178.63 (14) |
N3—S1—C13—C12 | −77.72 (14) | C5—C6—C9—N2 | −15.4 (2) |
N3—S1—C13—C14 | 100.83 (13) | C7—C6—C9—N2 | 165.43 (16) |
C10—N2—C9—C6 | 174.08 (13) | C6—C7—C8—C3 | −1.9 (2) |
C9—N2—C10—C11 | −53.6 (2) | N2—C10—C11—C12 | −178.14 (14) |
C9—N2—C10—C15 | 130.68 (15) | C15—C10—C11—C12 | −2.5 (2) |
C4—C3—N1—C1 | 176.79 (15) | N2—C10—C15—C14 | 178.40 (13) |
C4—C3—N1—C2 | −1.0 (2) | C11—C10—C15—C14 | 2.7 (2) |
C8—C3—N1—C1 | −5.5 (2) | C13—C12—C11—C10 | 0.3 (2) |
C8—C3—N1—C2 | 176.71 (16) | S1—C13—C12—C11 | −179.80 (12) |
N1—C3—C4—C5 | 178.58 (15) | C14—C13—C12—C11 | 1.7 (2) |
C8—C3—C4—C5 | 0.8 (2) | S1—C13—C14—C15 | −179.94 (11) |
N1—C3—C8—C7 | −177.33 (15) | C12—C13—C14—C15 | −1.4 (2) |
C4—C3—C8—C7 | 0.4 (2) | C13—C14—C15—C10 | −0.8 (2) |
C3—C4—C5—C6 | −0.6 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H31···N2i | 0.80 (3) | 2.18 (3) | 2.981 (2) | 177 (2) |
N3—H32···O2ii | 0.832 (19) | 2.494 (19) | 3.321 (2) | 174 (2) |
Symmetry codes: (i) −x+1, −y+1, −z; (ii) x, −y+1/2, z−1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
N3—H31···N2i | 0.80 (3) | 2.18 (3) | 2.981 (2) | 177 (2) |
N3—H32···O2ii | 0.832 (19) | 2.494 (19) | 3.321 (2) | 174 (2) |
Symmetry codes: (i) −x+1, −y+1, −z; (ii) x, −y+1/2, z−1/2. |
Acknowledgements
The authors acknowledge the Aksaray University, Science and Technology Application and Research Center, Aksaray, Turkey, for the use of the Bruker SMART BREEZE CCD diffractometer (purchased under grant No. 2010K120480 of the State of Planning Organization), and the Unit of Scientific Research Projects of Harran University, Şanlıurfa, Turkey for a research grant (HUBAK grant No. 12040).
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Many Schiff bases are prepared by condensation reactions of a sulfonamide with a substituted benzaldehyde derivative. Such compounds contain both azomethine (-HC═N-) and sulfonamide (-SO2NH2) groups. Sulfonamide derivatives are very important because of their varied structures and biological activities (Domagk, 1935). This type of derivative displays interesting enzymatic inhibition towards the carbonic anhydrase (CA) isozymes CA I, II, IV, IX and XII (Supuran et al., 1996; Türkmen et al., 2005; Saluja et al., 2014) and the cyclo-oxygenase (COX) enzymes COX-1 and COX-2 (Lin et al., 2008) are still widely used as antimicrobial drugs, antithyroid agents, antibacterial, antifungal, antitumor, antibiotics, acid-base indicator, potential anticancer agents (Maren, 1967; Khalil et al., 2009; Sharaby, 2007; Mohamed et al., 2013; Chohan & Shad, 2012). The title compound was synthesized and its crystal structure is reported on herein.
In the molecule of the title compound (Fig. 1) the bond lengths are within normal ranges (Allen et al., 1987). The azomethine (-HC═N-) group is rotated out of the plane of the dimethylamino benzaldehyde and benzenesulfonamide benzene rings with torsion angles C5–C6–C9–N2 = -15.4 (2)° and C11–C10–N2–c9 = -53.6 (2)°. The two benzene rings A (C3—C8) and B (C10—C15) are oriented at a dihedral angle of 69.88 (4)°. Atoms N1, N2, C1, C2, C9 and C10 atoms are displaced from the plane of ring A by 0.034 (2), -0.302 (1), -0.045 (2), 0.106 (2), -0.018 (2) and -0.146 (2) Å, respectively, while atoms S1 and N2 are displaced from ring B by -0.0181 (4) and 0.026 (1) Å, respectively.
In the crystal, pairs of N—H···N hydrogen bonds link the molecules into inversion dimers forming R22(16) ring motifs (Table 1 and Fig. 2; Bernstein et al., 1995). These dimers are linked by N—H···O hydrogen bonds (Table 1) forming sheets lying parallel to (100). A π···π contact between inversion related the benzenesulfonamide benzene rings in the sheet, Cg2—Cg2i [symmetry code: (i) - x+1, - y+ 2, - z; where Cg2 is the centroid of ring B] may further stabilize the structure, with a centroid-centroid distance of 3.8800 (9) Å.