organic compounds
4-(Benzylideneamino)benzenesulfonamide
aEskitis Institute for Cell and Molecular Therapies, Griffith University, Brisbane 4111, Australia
*Correspondence e-mail: p.healy@griffith.edu.au
The title compound, C13H12N2O2S, formed by Schiff base condensation of benzaldehyde with sulfanilamide, crystallizes as discrete molecular species linked by N—H⋯N and N—H⋯O hydrogen bonds between the sulfamide nitrogen H atoms and the azamethine N and one sulfamide O atom, respectively, forming a two-dimensional array in the bc plane. The azamethine group is rotated slightly out of the benzaldehyde benzene plane [C—C—C—N torsion angle = 8.1 (3)°], while the dihedral angle between the two benzene rings is 30.0 (1)°.
Related literature
Condensation of substituted benzaldehydes with sulfanilamide yields a diverse array of et al. (1996); Lin et al. (2008). For our ongoing studies on the synthesis, structures and biological activity of organometallic Cp*Ru(II) arene complexes Loughrey et al. (2008, 2009). For related structures, see Chumakov et al. (2006); Subashini et al. (2009).
which display interesting enzymatic inhibition, see SupuranExperimental
Crystal data
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Refinement
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Data collection: CrysAlis CCD (Oxford Diffraction, 2007); cell CrysAlis RED (Oxford Diffraction, 2007); data reduction: CrysAlis RED; program(s) used to solve structure: SIR97 (Altomare et al., 1999); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: PLATON (Spek, 2009).
Supporting information
10.1107/S1600536809030256/tk2519sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809030256/tk2519Isup2.hkl
Compound (I) was prepared according to established procedures (Lin et al., 2008). Sulfanilamide (1.0 g, 5.81 mmol) was dissolved in a minimum quantity of ethanol and the resulting solution heated to reflux. Benzaldehyde (0.59 ml, 5.81 mmol) was added dropwise over a period of 5 minutes, during which time a fine white precipitate started to form. The mixture was heated at reflux for a further 3 h, after which the solvent was cooled and concentrated in vacuo. The resulting white, crystalline precipitate was filtered and washed with cold ethanol. Yield = 1.47 g, 97%. M.p. 462–465 K. NMR 1H (d6 DMSO), δ 7.35 (br s, 2H, NH2), 7.37 - 7.40 (m, 2H, C6H4 ortho), 7.51 - 7.57 (m, 3H, C6H5 meta, para), 7.84 - 7.87 (m, 2H, C6H4 meta), 7.94 - 7.97 (m, 2H, C6H5 ortho), 8.64 (s, 1H, CH=N). Crystals suitable for X-ray diffraction studies were grown by slow evaporation of an acetone solution of (I).
H atoms attached to carbon were constrained as riding atoms with C–H set to 0.95 Å, and with Uiso(H) values set to 1.2Ueq of the parent atom. The N protons were located in Fourier difference maps and constrained as riding atoms with N–H set to 0.86 - 0.87 Å, and with Uiso(H) values set to 1.2Ueq of the parent atom.
Data collection: CrysAlis CCD (Oxford Diffraction, 2007); cell
CrysAlis RED (Oxford Diffraction, 2007); data reduction: CrysAlis RED (Oxford Diffraction, 2007); program(s) used to solve structure: SIR97 (Altomare et al., 1999); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997); software used to prepare material for publication: PLATON (Spek, 2009).C13H12N2O2S | F(000) = 544 |
Mr = 260.32 | Dx = 1.367 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71070 Å |
Hall symbol: -P 2ybc | Cell parameters from 6065 reflections |
a = 14.5206 (8) Å | θ = 3.2–32.1° |
b = 11.4992 (6) Å | µ = 0.25 mm−1 |
c = 7.7846 (5) Å | T = 296 K |
β = 103.287 (6)° | Block, colourless |
V = 1265.04 (13) Å3 | 0.43 × 0.31 × 0.20 mm |
Z = 4 |
Oxford-Diffraction Gemini S Ultra diffractometer | 2253 independent reflections |
Radiation source: Enhance (Mo) X-ray Source | 1928 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.018 |
Detector resolution: 16.0774 pixels mm-1 | θmax = 25.2°, θmin = 3.2° |
ω and ϕ scans | h = −17→16 |
Absorption correction: multi-scan (CrysAlis RED; Oxford Diffraction, 2007) | k = −13→13 |
Tmin = 0.900, Tmax = 0.952 | l = −7→9 |
8991 measured reflections |
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)] = 0.031 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.085 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.0422P)2 + 0.369P] where P = (Fo2 + 2Fc2)/3 |
2253 reflections | (Δ/σ)max = 0.001 |
163 parameters | Δρmax = 0.27 e Å−3 |
0 restraints | Δρmin = −0.24 e Å−3 |
C13H12N2O2S | V = 1265.04 (13) Å3 |
Mr = 260.32 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 14.5206 (8) Å | µ = 0.25 mm−1 |
b = 11.4992 (6) Å | T = 296 K |
c = 7.7846 (5) Å | 0.43 × 0.31 × 0.20 mm |
β = 103.287 (6)° |
Oxford-Diffraction Gemini S Ultra diffractometer | 2253 independent reflections |
Absorption correction: multi-scan (CrysAlis RED; Oxford Diffraction, 2007) | 1928 reflections with I > 2σ(I) |
Tmin = 0.900, Tmax = 0.952 | Rint = 0.018 |
8991 measured reflections |
R[F2 > 2σ(F2)] = 0.031 | 0 restraints |
wR(F2) = 0.085 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.27 e Å−3 |
2253 reflections | Δρmin = −0.24 e Å−3 |
163 parameters |
Experimental. CrysAlis RED, Oxford Diffraction Ltd., Version 1.171.33.32 (release 27-01-2009 CrysAlis171 .NET) (compiled Jan 27 2009,14:17:37) Empirical absorption correction using spherical harmonics, implemented in SCALE3 ABSPACK scaling algorithm. |
Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell e.s.d.'s are taken into account in the estimation of distances, angles and torsion angles |
Refinement. Refinement on F2 for ALL reflections except those flagged by the user for potential systematic errors. Weighted R-factors wR and all goodnesses of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The observed criterion of F2 > σ(F2) is used only for calculating -R-factor-obs 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 | 1.18567 (3) | 0.37673 (4) | 0.30521 (6) | 0.0398 (1) | |
O11 | 1.21041 (8) | 0.26127 (11) | 0.26279 (18) | 0.0556 (5) | |
O12 | 1.19451 (9) | 0.47053 (13) | 0.19034 (18) | 0.0621 (5) | |
N1 | 1.25128 (9) | 0.40557 (11) | 0.49616 (19) | 0.0418 (4) | |
N4 | 0.78277 (9) | 0.36050 (11) | 0.36083 (18) | 0.0389 (4) | |
C1 | 1.06568 (11) | 0.37128 (13) | 0.3201 (2) | 0.0345 (5) | |
C2 | 1.00490 (12) | 0.46245 (14) | 0.2581 (2) | 0.0420 (5) | |
C3 | 0.91150 (11) | 0.45702 (14) | 0.2709 (2) | 0.0431 (5) | |
C4 | 0.87847 (11) | 0.36039 (13) | 0.3457 (2) | 0.0350 (5) | |
C5 | 0.94078 (11) | 0.26993 (14) | 0.4104 (2) | 0.0383 (5) | |
C6 | 1.03363 (11) | 0.27468 (13) | 0.3960 (2) | 0.0380 (5) | |
C41 | 0.73681 (11) | 0.26550 (14) | 0.3389 (2) | 0.0409 (5) | |
C42 | 0.63915 (11) | 0.25305 (14) | 0.3574 (2) | 0.0405 (5) | |
C43 | 0.58382 (13) | 0.34722 (17) | 0.3798 (3) | 0.0584 (7) | |
C44 | 0.49211 (14) | 0.3309 (2) | 0.3954 (3) | 0.0685 (8) | |
C45 | 0.45425 (13) | 0.2225 (2) | 0.3881 (3) | 0.0638 (8) | |
C46 | 0.50775 (16) | 0.1288 (2) | 0.3660 (4) | 0.0746 (9) | |
C47 | 0.60028 (14) | 0.14359 (17) | 0.3505 (3) | 0.0629 (7) | |
H2 | 1.02730 | 0.52870 | 0.20700 | 0.0500* | |
H3 | 0.86980 | 0.51960 | 0.22830 | 0.0520* | |
H5 | 0.91910 | 0.20460 | 0.46480 | 0.0460* | |
H6 | 1.07550 | 0.21210 | 0.43790 | 0.0450* | |
H11 | 1.23500 | 0.47150 | 0.53220 | 0.0480* | |
H12 | 1.24380 | 0.35210 | 0.57000 | 0.0480* | |
H41 | 0.76760 | 0.19860 | 0.30880 | 0.0490* | |
H43 | 0.60920 | 0.42360 | 0.38450 | 0.0700* | |
H44 | 0.45490 | 0.39620 | 0.41160 | 0.0820* | |
H45 | 0.39080 | 0.21220 | 0.39820 | 0.0760* | |
H46 | 0.48150 | 0.05290 | 0.36120 | 0.0900* | |
H47 | 0.63700 | 0.07770 | 0.33510 | 0.0750* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0320 (2) | 0.0436 (2) | 0.0465 (3) | −0.0013 (2) | 0.0148 (2) | −0.0021 (2) |
O11 | 0.0422 (7) | 0.0583 (8) | 0.0686 (9) | 0.0029 (6) | 0.0177 (6) | −0.0237 (7) |
O12 | 0.0473 (7) | 0.0774 (9) | 0.0668 (9) | −0.0024 (6) | 0.0241 (6) | 0.0241 (7) |
N1 | 0.0351 (7) | 0.0369 (7) | 0.0540 (9) | −0.0028 (6) | 0.0118 (6) | −0.0050 (6) |
N4 | 0.0323 (7) | 0.0386 (7) | 0.0470 (8) | 0.0007 (6) | 0.0119 (6) | −0.0024 (6) |
C1 | 0.0308 (8) | 0.0361 (8) | 0.0373 (8) | −0.0016 (6) | 0.0095 (6) | −0.0039 (7) |
C2 | 0.0416 (9) | 0.0326 (8) | 0.0550 (10) | −0.0002 (7) | 0.0176 (8) | 0.0056 (7) |
C3 | 0.0383 (9) | 0.0348 (8) | 0.0579 (11) | 0.0064 (7) | 0.0143 (8) | 0.0051 (8) |
C4 | 0.0320 (8) | 0.0354 (8) | 0.0385 (8) | −0.0003 (6) | 0.0102 (6) | −0.0055 (7) |
C5 | 0.0367 (8) | 0.0343 (8) | 0.0446 (9) | −0.0019 (6) | 0.0109 (7) | 0.0041 (7) |
C6 | 0.0336 (8) | 0.0347 (8) | 0.0443 (9) | 0.0027 (6) | 0.0064 (7) | 0.0031 (7) |
C41 | 0.0359 (9) | 0.0387 (9) | 0.0488 (9) | 0.0015 (7) | 0.0112 (7) | −0.0055 (7) |
C42 | 0.0335 (8) | 0.0430 (9) | 0.0453 (9) | −0.0030 (7) | 0.0097 (7) | −0.0031 (7) |
C43 | 0.0378 (10) | 0.0477 (10) | 0.0915 (15) | −0.0012 (8) | 0.0188 (10) | −0.0052 (10) |
C44 | 0.0394 (11) | 0.0706 (14) | 0.0988 (17) | 0.0055 (10) | 0.0226 (11) | −0.0102 (13) |
C45 | 0.0366 (10) | 0.0868 (16) | 0.0701 (14) | −0.0095 (10) | 0.0169 (9) | −0.0023 (12) |
C46 | 0.0548 (13) | 0.0639 (14) | 0.1079 (19) | −0.0227 (11) | 0.0245 (13) | −0.0024 (13) |
C47 | 0.0462 (11) | 0.0489 (11) | 0.0965 (16) | −0.0058 (9) | 0.0225 (11) | −0.0086 (11) |
S1—O11 | 1.4337 (13) | C42—C43 | 1.383 (3) |
S1—O12 | 1.4256 (15) | C43—C44 | 1.378 (3) |
S1—N1 | 1.6051 (15) | C44—C45 | 1.358 (3) |
S1—C1 | 1.7737 (17) | C45—C46 | 1.362 (3) |
N4—C4 | 1.421 (2) | C46—C47 | 1.387 (3) |
N4—C41 | 1.271 (2) | C2—H2 | 0.9500 |
N1—H12 | 0.8700 | C3—H3 | 0.9500 |
N1—H11 | 0.8600 | C5—H5 | 0.9500 |
C1—C6 | 1.388 (2) | C6—H6 | 0.9500 |
C1—C2 | 1.384 (2) | C41—H41 | 0.9500 |
C2—C3 | 1.384 (2) | C43—H43 | 0.9500 |
C3—C4 | 1.390 (2) | C44—H44 | 0.9500 |
C4—C5 | 1.395 (2) | C45—H45 | 0.9500 |
C5—C6 | 1.379 (2) | C46—H46 | 0.9500 |
C41—C42 | 1.465 (2) | C47—H47 | 0.9500 |
C42—C47 | 1.375 (3) | ||
S1···H6i | 3.1100 | H2···C5iii | 2.9900 |
O11···C6i | 3.398 (2) | H2···C6iii | 3.0200 |
O11···N1i | 2.9845 (19) | H5···C41 | 2.7000 |
O11···H45ii | 2.6500 | H5···H41 | 2.2600 |
O11···H6 | 2.6900 | H5···C2v | 3.0200 |
O11···H6i | 2.8400 | H5···C3v | 3.0400 |
O11···H12i | 2.1300 | H6···O11 | 2.6900 |
O12···H2 | 2.5500 | H6···S1v | 3.1100 |
O12···H41iii | 2.6800 | H6···O11v | 2.8400 |
O12···H47iii | 2.7900 | H11···N4iv | 2.1400 |
N1···N4iv | 2.9955 (18) | H11···C3iv | 3.0100 |
N1···O11v | 2.9845 (19) | H11···C4iv | 2.8400 |
N4···N1iv | 2.9955 (18) | H11···H43iv | 2.5100 |
N1···H43iv | 2.8200 | H12···O11v | 2.1300 |
N4···H43 | 2.6700 | H41···C5 | 2.5900 |
N4···H11iv | 2.1400 | H41···H5 | 2.2600 |
C6···O11v | 3.398 (2) | H41···H47 | 2.4000 |
C44···C47v | 3.542 (3) | H41···O12vi | 2.6800 |
C47···C44i | 3.542 (3) | H43···N4 | 2.6700 |
C2···H5i | 3.0200 | H43···H46vii | 2.5400 |
C3···H11iv | 3.0100 | H43···N1iv | 2.8200 |
C3···H5i | 3.0400 | H43···H11iv | 2.5100 |
C4···H11iv | 2.8400 | H45···O11ix | 2.6500 |
C5···H2vi | 2.9900 | H46···C43x | 3.0300 |
C5···H41 | 2.5900 | H46···H43x | 2.5400 |
C6···H2vi | 3.0200 | H46···C46viii | 2.9600 |
C41···H5 | 2.7000 | H46···H46viii | 2.4300 |
C43···H46vii | 3.0300 | H47···H41 | 2.4000 |
C46···H46viii | 2.9600 | H47···O12vi | 2.7900 |
H2···O12 | 2.5500 | ||
O11—S1—O12 | 119.52 (8) | C43—C44—C45 | 120.8 (2) |
O11—S1—N1 | 106.13 (8) | C44—C45—C46 | 119.6 (2) |
O11—S1—C1 | 106.51 (7) | C45—C46—C47 | 120.4 (2) |
O12—S1—N1 | 107.74 (8) | C42—C47—C46 | 120.39 (19) |
O12—S1—C1 | 107.41 (8) | C1—C2—H2 | 120.00 |
N1—S1—C1 | 109.25 (7) | C3—C2—H2 | 120.00 |
C4—N4—C41 | 118.77 (13) | C2—C3—H3 | 120.00 |
H11—N1—H12 | 109.00 | C4—C3—H3 | 120.00 |
S1—N1—H11 | 110.00 | C4—C5—H5 | 120.00 |
S1—N1—H12 | 109.00 | C6—C5—H5 | 120.00 |
S1—C1—C2 | 120.51 (12) | C1—C6—H6 | 120.00 |
S1—C1—C6 | 119.12 (12) | C5—C6—H6 | 120.00 |
C2—C1—C6 | 120.36 (15) | N4—C41—H41 | 118.00 |
C1—C2—C3 | 119.85 (15) | C42—C41—H41 | 118.00 |
C2—C3—C4 | 120.29 (15) | C42—C43—H43 | 120.00 |
C3—C4—C5 | 119.33 (15) | C44—C43—H43 | 120.00 |
N4—C4—C5 | 122.43 (14) | C43—C44—H44 | 120.00 |
N4—C4—C3 | 118.17 (14) | C45—C44—H44 | 120.00 |
C4—C5—C6 | 120.41 (15) | C44—C45—H45 | 120.00 |
C1—C6—C5 | 119.73 (15) | C46—C45—H45 | 120.00 |
N4—C41—C42 | 124.13 (15) | C45—C46—H46 | 120.00 |
C41—C42—C43 | 122.64 (15) | C47—C46—H46 | 120.00 |
C41—C42—C47 | 118.91 (16) | C42—C47—H47 | 120.00 |
C43—C42—C47 | 118.45 (17) | C46—C47—H47 | 120.00 |
C42—C43—C44 | 120.38 (18) | ||
O11—S1—C1—C2 | −141.95 (13) | C2—C3—C4—C5 | 1.1 (2) |
O11—S1—C1—C6 | 38.53 (15) | N4—C4—C5—C6 | −178.65 (14) |
O12—S1—C1—C2 | −12.78 (15) | C3—C4—C5—C6 | −1.8 (2) |
O12—S1—C1—C6 | 167.69 (13) | C4—C5—C6—C1 | 1.4 (2) |
N1—S1—C1—C2 | 103.82 (13) | N4—C41—C42—C43 | 8.1 (3) |
N1—S1—C1—C6 | −75.71 (14) | N4—C41—C42—C47 | −172.62 (17) |
C41—N4—C4—C3 | 143.94 (15) | C41—C42—C43—C44 | 179.57 (18) |
C41—N4—C4—C5 | −39.2 (2) | C47—C42—C43—C44 | 0.3 (3) |
C4—N4—C41—C42 | 177.62 (14) | C41—C42—C47—C46 | −179.4 (2) |
S1—C1—C2—C3 | −179.89 (12) | C43—C42—C47—C46 | −0.1 (3) |
C6—C1—C2—C3 | −0.4 (2) | C42—C43—C44—C45 | −0.4 (3) |
S1—C1—C6—C5 | 179.21 (12) | C43—C44—C45—C46 | 0.3 (4) |
C2—C1—C6—C5 | −0.3 (2) | C44—C45—C46—C47 | −0.2 (4) |
C1—C2—C3—C4 | 0.0 (2) | C45—C46—C47—C42 | 0.1 (4) |
C2—C3—C4—N4 | 178.08 (14) |
Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) x+1, y, z; (iii) −x+2, y+1/2, −z+1/2; (iv) −x+2, −y+1, −z+1; (v) x, −y+1/2, z+1/2; (vi) −x+2, y−1/2, −z+1/2; (vii) −x+1, y+1/2, −z+1/2; (viii) −x+1, −y, −z+1; (ix) x−1, y, z; (x) −x+1, y−1/2, −z+1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H11···N4iv | 0.86 | 2.14 | 2.9955 (18) | 171 |
N1—H12···O11v | 0.87 | 2.13 | 2.9845 (19) | 171 |
Symmetry codes: (iv) −x+2, −y+1, −z+1; (v) x, −y+1/2, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C13H12N2O2S |
Mr | 260.32 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 296 |
a, b, c (Å) | 14.5206 (8), 11.4992 (6), 7.7846 (5) |
β (°) | 103.287 (6) |
V (Å3) | 1265.04 (13) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.25 |
Crystal size (mm) | 0.43 × 0.31 × 0.20 |
Data collection | |
Diffractometer | Oxford-Diffraction Gemini S Ultra diffractometer |
Absorption correction | Multi-scan (CrysAlis RED; Oxford Diffraction, 2007) |
Tmin, Tmax | 0.900, 0.952 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 8991, 2253, 1928 |
Rint | 0.018 |
(sin θ/λ)max (Å−1) | 0.599 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.031, 0.085, 1.05 |
No. of reflections | 2253 |
No. of parameters | 163 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.27, −0.24 |
Computer programs: CrysAlis CCD (Oxford Diffraction, 2007), CrysAlis RED (Oxford Diffraction, 2007), SIR97 (Altomare et al., 1999), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997), PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H11···N4i | 0.86 | 2.14 | 2.9955 (18) | 171 |
N1—H12···O11ii | 0.87 | 2.13 | 2.9845 (19) | 171 |
Symmetry codes: (i) −x+2, −y+1, −z+1; (ii) x, −y+1/2, z+1/2. |
Acknowledgements
We acknowledge support of this work by Griffith University, the Queensland University of Technology and the Eskitis Institute for Cell and Molecular Therapies.
References
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Condensation of substituted benzaldehydes with sulfanilamide yields a diverse array of Schiff bases which display interesting enzymatic inhibition towards the carbonic anhydrase (CA) isozymes CA I, II and IV (Supuran et al., 1996) and the cyclo-oxogenase (COX) enzymes COX-1 and COX-2 (Lin et al., 2008). As part of our ongoing studies on the synthesis, structures and biological activity of organometallic Cp*Ru(II) arene complexes with these and related benzenesulfonamides [Cp*Ru(R—Ph—SO2NH2)]X (Loughrey et al., 2008, 2009) we have prepared and determined the crystal structure of the title compound (I).
The crystal structure of (I) consists of discrete molecules (Fig. 1) with bond lengths in the normal range expected for this class of compound (Chumakov et al., 2006; Subashini et al., 2009). The –CH=N– azomethine group is rotated slightly out of the plane of the benzaldehyde benzene ring with the torsion angle C43—C42—C41—N4 = 8.1 (3)°. The dihedral angle between the two benzene rings is 30.0 (1)°. In the crystal lattice, the sulfamide nitrogen protons form N—H···N and N—H···O intermolecular hydrogen bonds with the azamethine nitrogen and the sulfamide oxygen O11 (Table 1, Fig. 2).