organic compounds
Uronium 3-carboxy-4-hydroxybenzenesulfonate
aDepartment of Physics, Presidency College, Chennai 600 005, India, bDepartment of Physics, CPCL Polytechnic College, Chennai 600 068, India, and cKunthavai Naacchiyaar Govt. Arts College (W), Thanjavur 613 007, India
*Correspondence e-mail: chakkaravarthi_2005@yahoo.com, kan_uma6@yahoo.com
In the title compound, CH5N2O+·C7H5O6S−, the dihedral angle between the benzene ring and the mean plane of the uronium cation is 76.02 (8)°. The carboxyl group in the anion is twisted by 1.47 (9)° from the benzene ring. In the crystal, the cation is linked to the anion by weak O—H⋯O and N—H⋯O hydrogen bonds and π–π interactions [centroid–centroid distance = 3.8859 (8) Å], forming a three-dimensional network.
CCDC reference: 968736
Related literature
For the biological activity of urea derivatives, see: Sliskovic et al. (1999); Furlong et al. (2000); Houghton et al. (1995). For related structures, see: Krishnakumar et al. (2012); Sudhahar et al. (2013); Worsham & Busing (1969); Nelyubina et al. (2007).
Experimental
Crystal data
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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: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97.
Supporting information
CCDC reference: 968736
10.1107/S1600536813029474/bh2485sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813029474/bh2485Isup2.hkl
Urea (CH4N2O, 3.003 g) and 5-sulfosalicylic acid (C7H6O6S, 12.711 g, 1:1 ratio) were mixed in water and the resulting solution was allowed for slow evaporation at room temperature. Good quality crystals, suitable for
data collection, were collected after 2 weeks.H atoms bonded to O and N heteroatoms were placed from difference maps and refined with free coordinates, although restrictions were applied on bond lengths: N—H = 0.86 (1) Å and O—H = 0.82 (1) Å. Isotropic displacement parameters for these H atoms were calculated as Uiso(H) = 1.5Ueq(O) for O—H bonds and Uiso(H) = 1.2Ueq(N) for N—H bonds. H atoms for CH groups were positioned geometrically and refined using a riding model, with C—H = 0.93 Å and Uiso(H) = 1.2Ueq(C).
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: PLATON (Spek, 2009); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The molecular structure of (I), with 30% probability displacement ellipsoids for non-H atoms. Intramolecular hydrogen bonds are shown as dashed lines. | |
Fig. 2. The packing of (I), viewed down b axis. Intermolecular hydrogen bonds are shown as dashed lines. H atoms not involved in hydrogen bonding have been omitted. |
CH5N2O+·C7H5O6S− | Z = 2 |
Mr = 278.24 | F(000) = 288 |
Triclinic, P1 | Dx = 1.631 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 7.2248 (4) Å | Cell parameters from 7318 reflections |
b = 8.7718 (5) Å | θ = 2.1–32.8° |
c = 10.1549 (5) Å | µ = 0.32 mm−1 |
α = 85.504 (3)° | T = 295 K |
β = 71.087 (2)° | Block, colourless |
γ = 68.659 (2)° | 0.30 × 0.24 × 0.20 mm |
V = 566.50 (5) Å3 |
Bruker APEXII CCD diffractometer | 4079 independent reflections |
Radiation source: fine-focus sealed tube | 3432 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.028 |
ω and ϕ scan | θmax = 33.6°, θmin = 2.1° |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | h = −11→11 |
Tmin = 0.911, Tmax = 0.939 | k = −13→13 |
14246 measured reflections | l = −14→15 |
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 atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.110 | w = 1/[σ2(Fo2) + (0.0577P)2 + 0.1089P] where P = (Fo2 + 2Fc2)/3 |
S = 1.05 | (Δ/σ)max < 0.001 |
4079 reflections | Δρmax = 0.41 e Å−3 |
185 parameters | Δρmin = −0.40 e Å−3 |
7 restraints | Extinction correction: SHELXL97, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
0 constraints | Extinction coefficient: 0.105 (7) |
Primary atom site location: structure-invariant direct methods |
CH5N2O+·C7H5O6S− | γ = 68.659 (2)° |
Mr = 278.24 | V = 566.50 (5) Å3 |
Triclinic, P1 | Z = 2 |
a = 7.2248 (4) Å | Mo Kα radiation |
b = 8.7718 (5) Å | µ = 0.32 mm−1 |
c = 10.1549 (5) Å | T = 295 K |
α = 85.504 (3)° | 0.30 × 0.24 × 0.20 mm |
β = 71.087 (2)° |
Bruker APEXII CCD diffractometer | 4079 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2004) | 3432 reflections with I > 2σ(I) |
Tmin = 0.911, Tmax = 0.939 | Rint = 0.028 |
14246 measured reflections |
R[F2 > 2σ(F2)] = 0.037 | 7 restraints |
wR(F2) = 0.110 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.05 | Δρmax = 0.41 e Å−3 |
4079 reflections | Δρmin = −0.40 e Å−3 |
185 parameters |
x | y | z | Uiso*/Ueq | ||
C1 | 0.22603 (17) | 0.52320 (13) | 0.56728 (12) | 0.0301 (2) | |
C2 | 0.28443 (18) | 0.45643 (14) | 0.43261 (12) | 0.0324 (2) | |
C3 | 0.3015 (2) | 0.29542 (15) | 0.41388 (13) | 0.0376 (3) | |
H3 | 0.3363 | 0.2524 | 0.3246 | 0.045* | |
C4 | 0.26724 (19) | 0.20039 (14) | 0.52622 (13) | 0.0347 (2) | |
H4 | 0.2801 | 0.0928 | 0.5132 | 0.042* | |
C5 | 0.21286 (17) | 0.26557 (12) | 0.66054 (12) | 0.0288 (2) | |
C6 | 0.19033 (17) | 0.42571 (13) | 0.68131 (12) | 0.0301 (2) | |
H6 | 0.1514 | 0.4687 | 0.7712 | 0.036* | |
C7 | 0.20231 (19) | 0.69528 (14) | 0.58615 (14) | 0.0343 (2) | |
C8 | 0.5164 (2) | 0.26399 (16) | 1.00316 (13) | 0.0378 (3) | |
N1 | 0.6134 (2) | 0.16284 (17) | 0.89415 (14) | 0.0474 (3) | |
N2 | 0.6150 (2) | 0.32507 (16) | 1.05987 (13) | 0.0431 (3) | |
O1 | 0.1437 (2) | 0.74360 (11) | 0.71788 (11) | 0.0490 (3) | |
O2 | 0.23382 (18) | 0.78366 (11) | 0.48953 (11) | 0.0473 (2) | |
O3 | 0.32586 (18) | 0.54310 (12) | 0.31773 (10) | 0.0459 (2) | |
O4 | 0.39451 (15) | 0.02256 (11) | 0.79035 (11) | 0.0417 (2) | |
O5 | 0.05090 (15) | 0.05458 (11) | 0.78561 (11) | 0.0417 (2) | |
O6 | 0.08949 (15) | 0.24191 (11) | 0.92865 (9) | 0.0380 (2) | |
O7 | 0.31385 (16) | 0.31219 (15) | 1.06119 (12) | 0.0513 (3) | |
S1 | 0.18626 (4) | 0.13680 (3) | 0.80111 (3) | 0.03090 (10) | |
H1A | 0.551 (2) | 0.1153 (18) | 0.8654 (16) | 0.037* | |
H1B | 0.7463 (14) | 0.1303 (19) | 0.8589 (15) | 0.037* | |
H2A | 0.543 (2) | 0.3875 (17) | 1.1326 (12) | 0.037* | |
H2B | 0.7490 (14) | 0.2929 (19) | 1.0274 (16) | 0.037* | |
H1 | 0.129 (3) | 0.8404 (12) | 0.7270 (18) | 0.046* | |
H3A | 0.303 (3) | 0.6342 (14) | 0.3493 (18) | 0.046* | |
H7 | 0.253 (3) | 0.278 (2) | 1.0221 (17) | 0.046* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0310 (5) | 0.0228 (4) | 0.0369 (6) | −0.0100 (4) | −0.0100 (4) | −0.0027 (4) |
C2 | 0.0333 (5) | 0.0287 (5) | 0.0338 (6) | −0.0102 (4) | −0.0095 (4) | −0.0006 (4) |
C3 | 0.0466 (6) | 0.0317 (5) | 0.0328 (6) | −0.0125 (5) | −0.0105 (5) | −0.0068 (4) |
C4 | 0.0412 (6) | 0.0245 (5) | 0.0382 (6) | −0.0114 (4) | −0.0110 (5) | −0.0070 (4) |
C5 | 0.0300 (4) | 0.0222 (4) | 0.0341 (5) | −0.0099 (4) | −0.0083 (4) | −0.0037 (4) |
C6 | 0.0342 (5) | 0.0237 (4) | 0.0327 (5) | −0.0115 (4) | −0.0082 (4) | −0.0053 (4) |
C7 | 0.0361 (5) | 0.0244 (5) | 0.0434 (6) | −0.0117 (4) | −0.0123 (5) | −0.0015 (4) |
C8 | 0.0418 (6) | 0.0372 (6) | 0.0358 (6) | −0.0163 (5) | −0.0127 (5) | 0.0067 (5) |
N1 | 0.0385 (6) | 0.0541 (7) | 0.0480 (7) | −0.0165 (5) | −0.0089 (5) | −0.0101 (5) |
N2 | 0.0458 (6) | 0.0439 (6) | 0.0433 (6) | −0.0191 (5) | −0.0152 (5) | 0.0014 (5) |
O1 | 0.0766 (7) | 0.0265 (4) | 0.0465 (5) | −0.0241 (5) | −0.0149 (5) | −0.0053 (4) |
O2 | 0.0630 (6) | 0.0306 (4) | 0.0512 (6) | −0.0213 (4) | −0.0176 (5) | 0.0064 (4) |
O3 | 0.0634 (6) | 0.0374 (5) | 0.0356 (5) | −0.0196 (5) | −0.0130 (4) | 0.0036 (4) |
O4 | 0.0428 (5) | 0.0284 (4) | 0.0487 (5) | −0.0056 (4) | −0.0155 (4) | −0.0018 (4) |
O5 | 0.0445 (5) | 0.0310 (4) | 0.0515 (5) | −0.0216 (4) | −0.0064 (4) | −0.0068 (4) |
O6 | 0.0445 (5) | 0.0331 (4) | 0.0337 (4) | −0.0155 (4) | −0.0052 (3) | −0.0066 (3) |
O7 | 0.0402 (5) | 0.0632 (7) | 0.0490 (6) | −0.0176 (5) | −0.0095 (4) | −0.0137 (5) |
S1 | 0.03538 (15) | 0.02207 (13) | 0.03448 (16) | −0.01185 (10) | −0.00736 (11) | −0.00307 (9) |
C1—C6 | 1.3966 (16) | C8—O7 | 1.3029 (16) |
C1—C2 | 1.4010 (16) | C8—N1 | 1.3047 (17) |
C1—C7 | 1.4766 (15) | C8—N2 | 1.3104 (18) |
C2—O3 | 1.3523 (15) | N1—H1A | 0.841 (9) |
C2—C3 | 1.3951 (17) | N1—H1B | 0.852 (9) |
C3—C4 | 1.3695 (18) | N2—H2A | 0.850 (9) |
C3—H3 | 0.9300 | N2—H2B | 0.858 (9) |
C4—C5 | 1.3976 (15) | O1—H1 | 0.826 (9) |
C4—H4 | 0.9300 | O3—H3A | 0.824 (9) |
C5—C6 | 1.3791 (14) | O4—S1 | 1.4468 (10) |
C5—S1 | 1.7544 (12) | O5—S1 | 1.4602 (9) |
C6—H6 | 0.9300 | O6—S1 | 1.4654 (9) |
C7—O2 | 1.2165 (16) | O7—H7 | 0.821 (9) |
C7—O1 | 1.3189 (16) | ||
C6—C1—C2 | 119.27 (10) | O1—C7—C1 | 113.41 (11) |
C6—C1—C7 | 121.23 (10) | O7—C8—N1 | 121.64 (12) |
C2—C1—C7 | 119.50 (11) | O7—C8—N2 | 115.88 (12) |
O3—C2—C3 | 117.87 (11) | N1—C8—N2 | 122.48 (13) |
O3—C2—C1 | 122.19 (10) | C8—N1—H1A | 121.2 (11) |
C3—C2—C1 | 119.95 (11) | C8—N1—H1B | 120.5 (11) |
C4—C3—C2 | 120.39 (11) | H1A—N1—H1B | 117.5 (15) |
C4—C3—H3 | 119.8 | C8—N2—H2A | 117.9 (11) |
C2—C3—H3 | 119.8 | C8—N2—H2B | 118.8 (11) |
C3—C4—C5 | 119.82 (10) | H2A—N2—H2B | 123.0 (15) |
C3—C4—H4 | 120.1 | C7—O1—H1 | 112.4 (12) |
C5—C4—H4 | 120.1 | C2—O3—H3A | 103.8 (13) |
C6—C5—C4 | 120.59 (11) | C8—O7—H7 | 115.2 (13) |
C6—C5—S1 | 120.71 (9) | O4—S1—O5 | 112.06 (6) |
C4—C5—S1 | 118.63 (8) | O4—S1—O6 | 112.49 (6) |
C5—C6—C1 | 119.95 (10) | O5—S1—O6 | 111.64 (5) |
C5—C6—H6 | 120.0 | O4—S1—C5 | 106.92 (6) |
C1—C6—H6 | 120.0 | O5—S1—C5 | 106.35 (6) |
O2—C7—O1 | 123.37 (11) | O6—S1—C5 | 106.94 (5) |
O2—C7—C1 | 123.22 (11) | ||
C6—C1—C2—O3 | −178.47 (11) | C7—C1—C6—C5 | 179.73 (10) |
C7—C1—C2—O3 | 1.84 (18) | C6—C1—C7—O2 | 179.30 (12) |
C6—C1—C2—C3 | 1.51 (17) | C2—C1—C7—O2 | −1.02 (18) |
C7—C1—C2—C3 | −178.18 (11) | C6—C1—C7—O1 | −0.71 (16) |
O3—C2—C3—C4 | 178.12 (12) | C2—C1—C7—O1 | 178.98 (11) |
C1—C2—C3—C4 | −1.86 (19) | C6—C5—S1—O4 | −106.66 (10) |
C2—C3—C4—C5 | 0.64 (19) | C4—C5—S1—O4 | 70.32 (10) |
C3—C4—C5—C6 | 0.94 (18) | C6—C5—S1—O5 | 133.45 (9) |
C3—C4—C5—S1 | −176.05 (10) | C4—C5—S1—O5 | −49.56 (10) |
C4—C5—C6—C1 | −1.28 (17) | C6—C5—S1—O6 | 14.04 (11) |
S1—C5—C6—C1 | 175.65 (8) | C4—C5—S1—O6 | −168.98 (9) |
C2—C1—C6—C5 | 0.05 (17) |
D—H···A | D—H | H···A | D···A | D—H···A |
O3—H3A···O2 | 0.82 (1) | 1.83 (1) | 2.5966 (14) | 154 (18) |
O7—H7···O6 | 0.82 (1) | 1.85 (1) | 2.6629 (14) | 169 (18) |
N1—H1A···O4 | 0.84 (1) | 1.96 (1) | 2.7979 (16) | 175 (16) |
O1—H1···O5i | 0.83 (1) | 1.84 (1) | 2.6511 (12) | 167 (18) |
N1—H1B···O5ii | 0.85 (1) | 1.95 (1) | 2.7976 (16) | 178 (15) |
N2—H2B···O6ii | 0.86 (1) | 2.22 (1) | 3.0712 (16) | 172 (15) |
N2—H2A···O3iii | 0.85 (1) | 2.19 (1) | 3.0347 (16) | 173 (15) |
Symmetry codes: (i) x, y+1, z; (ii) x+1, y, z; (iii) x, y, z+1. |
D—H···A | D—H | H···A | D···A | D—H···A |
O3—H3A···O2 | 0.824 (9) | 1.831 (11) | 2.5966 (14) | 154 (18) |
O7—H7···O6 | 0.821 (9) | 1.852 (10) | 2.6629 (14) | 169 (18) |
N1—H1A···O4 | 0.841 (9) | 1.960 (9) | 2.7979 (16) | 175 (16) |
O1—H1···O5i | 0.826 (9) | 1.841 (10) | 2.6511 (12) | 167 (18) |
N1—H1B···O5ii | 0.852 (9) | 1.947 (9) | 2.7976 (16) | 178 (15) |
N2—H2B···O6ii | 0.858 (9) | 2.220 (9) | 3.0712 (16) | 172 (15) |
N2—H2A···O3iii | 0.850 (9) | 2.189 (9) | 3.0347 (16) | 173 (15) |
Symmetry codes: (i) x, y+1, z; (ii) x+1, y, z; (iii) x, y, z+1. |
Acknowledgements
The authors thank the SAIF, IIT Madras, for the data collection. MKK thanks the Council of Scientific and Industrial Research, New Delhi, India, for providing financial support [project No. 03 (1200)/11/EMR-II].
References
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Urea derivatives are known to exhibit anticholesterolemic, herbicidal and antitumor activities (Sliskovic et al., 1999; Furlong et al., 2000; Houghton et al., 1995). Herein, we report the crystal structure of the title compound (I, Fig. 1). The asymmetric unit consists of one CH5N2O+ cation and one C7H5O6S- anion. In the title compound, the geometric parameters of the uronium cation (Worsham & Busing, 1969; Nelyubina et al., 2007) and 3-carboxy-4-hydroxybenzenesulfonate anion (Krishnakumar et al., 2012; Sudhahar et al., 2013) are comparable with the reported structures.
The dihedral angle between the benzene ring and the mean plane of the uronium fragment is 76.02 (8)°. In the anion, the carboxyl group makes the dihedral angle of 1.47 (9)° with the benzene ring. In the molecular structure, cation and anion are linked by O—H···O and N—H···O hydrogen bonds, and the molecular conformation of the anion is controlled by weak O—H···O hydrogen bond (Fig. 1). The crystal structure exhibits weak intermolecular O—H···O, N—H···O (Table 1 and Fig. 2) and π···π [Cg1···Cg1i distance: 3.8859 (8) Å; (i) x, 1-y, 1-z; Cg1 is the centroid of the ring C1···C6] interactions, to form a three dimensional network.