organic compounds
2-[(2-Carboxyphenyl)disulfanyl]benzoic acid–4,4′-bipyridyl N,N′-dioxide (1/2)
aDepartamento de Química - Facultad de Ciencias, Universidad del Valle, Apartado 25360, Santiago de Cali, Colombia, bInstituto de Física de São Carlos, IFSC, Universidade de São Paulo, USP, São Carlos, SP, Brazil, and cInstituto de Qυ'imica de São Carlos, IFSC, Universidade de São Paulo, USP, São Carlos, SP, Brazil
*Correspondence e-mail: rodimo26@yahoo.es
In the title 2:1 adduct, C14H10O4S2·0.5C10H8N2O2, which arose from an unexpected oxidation of a precursor, the dihedral angle between the aromatic rings in the disulfide is 82.51 (11)°. In the crystal, the molecules are linked by O—H⋯O, O—H⋯N and C—H⋯O interactions, generating sheets.
Related literature
For structural studies of 4,4′-bipyridyl N,N′-dioxide, see: Lou & Huang (2007); Reddy et al. (2006). For the disulfide bond in polypeptide chains, see: Gortner & Hoffman (1941). For a related structure, see: Moreno-Fuquen et al. (2003). For hydrogen bonding, see: Etter (1990); Nardelli (1995).
Experimental
Crystal data
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Refinement
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Data collection: MSC/AFC Diffractometer Control Software (Molecular Structure Corporation, 1993); cell MSC/AFC Diffractometer Control Software; data reduction: TEXSAN (Molecular Structure Corporation, 1995); 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, 1997) and Mercury (Macrae et al., 2006); software used to prepare material for publication: WinGX (Farrugia, 1999).
Supporting information
https://doi.org/10.1107/S1600536810018775/hg2676sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810018775/hg2676Isup2.hkl
The sinthesis of the title compound (I) was carried out by slow evaporation of equimolar quantities of 2-mercaptobenzoic acid (0.537 g., 0.0035 mol) and 4,4'-bipyridyl N,N'-dioxide (0.655 g) in 50 ml of dry acetonitrile. Pale-yellow prisms of good quality, suitable for X-ray analysis were obtained. The initial reagents were purchased from Aldrich Chemical Co. and were used as received.
All H-atoms were located from difference maps and were positioned geometrically and refined using a riding model with C–H= 0.93–0.97 Å and Uiso(H)= 1.2Ueq(C).
The title compound, C14H10O4S2, 0.5(C10H8N2O2), (I), belongs to a series of molecular systems based on 4,4'-bipyridyl N,N'-dioxide (DPNO) with diverse hydrogen-bond donors, that has been synthesized in our research group (Moreno-Fuquen et al., 2003). Several authors have reported the formation of co-crystals from DPNO moiety (Lou & Huang, 2007; Reddy et al., 2006), taking advantage of the strong acceptor character of the N-oxide group. Initially, it was unclear which intermolecular hydrogen bond is formed: S—H ··· O or O—H ··· O. The oxidation of sulfhydryl (S—H) group, of the 2-mercaptobenzoic acid (MBA), allows the formation of 2,2'-dicarboxyphenyldisulfide molecule (CPS), which enters in the reaction with DPNO to form the title
The strong S—S disulfide bond formed in this structure, is important in linking polypeptide chains of proteins (Gortner & Hoffman, 1941). A perspective view of the molecule of the title compound, showing the atomic numbering scheme, is given in Fig. 1. The DPNO and CPS molecules are held together by an intermolecular hydrogen bonds between the O1 atom of the N-oxide group of DPNO and the O5 and O3 of the CPS molecule, with O···O distances of 2.583 (3) and 2.672 (3) Å respectively. The central S1—S2 bond length is 2.0397 (10) Å and the Car-S—S-Car torsion angle is -86.15 (14)%. There are no intramolecular O—H ··· S bonds in the structure. It is noted however, that carboxylic groups of the CPS molecule, exhibit different behaviors with respect to the presence of the neighboring sulfur atom. Indeed, while one of the O—H group of carboxylic group is oriented away from the S1 atom [torsion angle C13 C14 C19 O5, -12.7 (5)°], the second O—H group is oriented near to S2 atom [torsion angle C8 C7 C6 O3 163.8 (3)]. the DPNO molecule is almost coplanar with one of the planes of the CPS molecule showing a dihedral angle of 0.71 (7)°. With the other plane of CPS, the DPNO molecule forms a dihedral angle of 82.52 (11)°. The growth of the can be explained through a hydrogen bonding scheme (Table 1) (Nardelli, 1995). The title molecule is characterized by the formation of O—H···O and O—H···N hydrogen bonds and other weak C—H···O interactions. In a first atom O5 in the molecule at (x+1/2,-y+1/2,+z-1/2) and atom O3 in the molecule at (-x,-y,-z+1) act simultaneously as hydrogen bond donors to O1 atom in the molecule at (x,y,z). In turn, the O5 atom is linked to the N1 atom at (x,y,z). The propagation of these interactions forms a large R76(57) ring (Etter, 1990) in the (1 0 -2) plane (Fig. 2). In a second atom C17 in the molecule at (x,y,z) acts as hydrogen bond donor to O2 atom in the molecule at -x+1/2,+y-1/2,-z+1/2. The propagation of this interaction forms C(11) continuous chains and running along [010] direction. All of these interactions define an infinite two-dimensional network for the structure (I) (Fig. 3).For structural studies of 4,4'-bipyridyl N,N'-dioxide, see: Lou & Huang (2007); Reddy et al. (2006). For the disulfide bond in polypeptide chains, see: Gortner & Hoffman (1941). For a related structure, see: Moreno-Fuquen et al. (2003). For hydrogen bonding, see: Etter (1990); Nardelli (1995).
Data collection: MSC/AFC Diffractometer Control Software (Molecular Structure Corporation, 1993); cell
MSC/AFC Diffractometer Control Software (Molecular Structure Corporation, 1993); data reduction: TEXSAN (Molecular Structure Corporation, 1995); 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, 1997) and Mercury (Macrae et al., 2006); software used to prepare material for publication: WinGX (Farrugia, 1999).C14H10O4S2·0.5C10H8N2O2 | F(000) = 1656 |
Mr = 400.45 | Dx = 1.532 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -c 2yc | Cell parameters from 25 reflections |
a = 21.314 (2) Å | θ = 10.3–19.1° |
b = 10.5621 (8) Å | µ = 0.34 mm−1 |
c = 16.005 (8) Å | T = 291 K |
β = 105.412 (8)° | Prism, pale-yellow |
V = 3473.5 (18) Å3 | 0.22 × 0.18 × 0.12 mm |
Z = 8 |
Rigaku AFC-7S diffractometer | 2658 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed X-ray tube | Rint = 0.046 |
Graphite monochromator | θmax = 25.1°, θmin = 2.0° |
ω/2θ scans | h = −25→24 |
Absorption correction: ψ scan (North et al., 1968) | k = 0→12 |
Tmin = 0.951, Tmax = 0.990 | l = 0→19 |
3066 measured reflections | 3 standard reflections every 120 min |
2781 independent reflections | intensity decay: 0.9% |
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)] = 0.065 | H-atom parameters constrained |
wR(F2) = 0.192 | w = 1/[σ2(Fo2) + (0.1415P)2 + 4.1121P] where P = (Fo2 + 2Fc2)/3 |
S = 1.11 | (Δ/σ)max < 0.001 |
2781 reflections | Δρmax = 0.74 e Å−3 |
244 parameters | Δρmin = −0.47 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008) |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: none |
C14H10O4S2·0.5C10H8N2O2 | V = 3473.5 (18) Å3 |
Mr = 400.45 | Z = 8 |
Monoclinic, C2/c | Mo Kα radiation |
a = 21.314 (2) Å | µ = 0.34 mm−1 |
b = 10.5621 (8) Å | T = 291 K |
c = 16.005 (8) Å | 0.22 × 0.18 × 0.12 mm |
β = 105.412 (8)° |
Rigaku AFC-7S diffractometer | 2658 reflections with I > 2σ(I) |
Absorption correction: ψ scan (North et al., 1968) | Rint = 0.046 |
Tmin = 0.951, Tmax = 0.990 | 3 standard reflections every 120 min |
3066 measured reflections | intensity decay: 0.9% |
2781 independent reflections |
R[F2 > 2σ(F2)] = 0.065 | 0 restraints |
wR(F2) = 0.192 | H-atom parameters constrained |
S = 1.11 | Δρmax = 0.74 e Å−3 |
2781 reflections | Δρmin = −0.47 e Å−3 |
244 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 > σ(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 | ||
S2 | 0.34651 (3) | 0.02160 (7) | 0.27473 (5) | 0.0381 (3) | |
S1 | 0.25516 (3) | −0.05076 (8) | 0.22805 (5) | 0.0389 (3) | |
O2 | 0.13221 (10) | −0.1328 (3) | 0.17027 (17) | 0.0487 (6) | |
O4 | 0.55073 (13) | 0.0281 (3) | 0.4215 (2) | 0.0761 (9) | |
O3 | 0.07037 (11) | −0.1051 (3) | 0.03538 (17) | 0.0589 (7) | |
H3 | 0.0408 | −0.1159 | 0.0585 | 0.088* | |
O5 | 0.46308 (12) | 0.1178 (2) | 0.3372 (2) | 0.0690 (9) | |
H55 | 0.4829 | 0.1832 | 0.3551 | 0.103* | |
C13 | 0.39868 (14) | −0.1151 (3) | 0.2968 (2) | 0.0359 (7) | |
C17 | 0.41418 (17) | −0.3405 (3) | 0.2889 (2) | 0.0472 (8) | |
H17 | 0.3975 | −0.4197 | 0.2693 | 0.057* | |
C9 | 0.29901 (14) | −0.0579 (3) | 0.0790 (2) | 0.0374 (7) | |
H9 | 0.3401 | −0.0404 | 0.1150 | 0.045* | |
C7 | 0.18433 (13) | −0.0960 (2) | 0.0587 (2) | 0.0337 (7) | |
C14 | 0.46425 (14) | −0.1032 (3) | 0.3434 (2) | 0.0379 (7) | |
C11 | 0.23059 (17) | −0.0955 (3) | −0.0634 (2) | 0.0443 (8) | |
H11 | 0.2254 | −0.1039 | −0.1227 | 0.053* | |
C8 | 0.24617 (13) | −0.0705 (3) | 0.1146 (2) | 0.0335 (7) | |
C10 | 0.29099 (16) | −0.0710 (3) | −0.0088 (2) | 0.0428 (8) | |
H10 | 0.3268 | −0.0632 | −0.0314 | 0.051* | |
C18 | 0.37493 (15) | −0.2348 (3) | 0.2689 (2) | 0.0421 (7) | |
H18 | 0.3320 | −0.2438 | 0.2363 | 0.051* | |
C19 | 0.49747 (14) | 0.0205 (3) | 0.3733 (2) | 0.0441 (8) | |
C6 | 0.12735 (14) | −0.1140 (3) | 0.0947 (2) | 0.0395 (8) | |
C15 | 0.50222 (15) | −0.2117 (3) | 0.3643 (2) | 0.0455 (8) | |
H15 | 0.5452 | −0.2041 | 0.3969 | 0.055* | |
C16 | 0.47782 (16) | −0.3297 (3) | 0.3378 (2) | 0.0480 (8) | |
H16 | 0.5038 | −0.4012 | 0.3527 | 0.058* | |
C12 | 0.17762 (15) | −0.1077 (3) | −0.0295 (2) | 0.0422 (8) | |
H12 | 0.1368 | −0.1239 | −0.0665 | 0.051* | |
N1 | 0.08340 (11) | 0.1895 (2) | 0.91617 (17) | 0.0361 (6) | |
O1 | 0.01985 (9) | 0.1677 (2) | 0.88364 (16) | 0.0460 (6) | |
C4 | 0.18672 (14) | 0.2206 (3) | 0.8937 (2) | 0.0399 (7) | |
H4 | 0.2127 | 0.2256 | 0.8555 | 0.048* | |
C1 | 0.10782 (14) | 0.2062 (3) | 1.0006 (2) | 0.0449 (8) | |
H1 | 0.0804 | 0.2023 | 1.0371 | 0.054* | |
C3 | 0.21476 (12) | 0.2373 (2) | 0.98169 (19) | 0.0311 (6) | |
C2 | 0.17312 (14) | 0.2295 (3) | 1.0351 (2) | 0.0436 (8) | |
H2 | 0.1895 | 0.2400 | 1.0946 | 0.052* | |
C5 | 0.12157 (14) | 0.1970 (3) | 0.8619 (2) | 0.0428 (7) | |
H5 | 0.1038 | 0.1863 | 0.8027 | 0.051* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S2 | 0.0244 (4) | 0.0417 (5) | 0.0448 (6) | −0.0003 (3) | 0.0033 (3) | −0.0071 (3) |
S1 | 0.0220 (4) | 0.0573 (5) | 0.0375 (6) | −0.0022 (3) | 0.0081 (3) | −0.0064 (3) |
O2 | 0.0295 (11) | 0.0734 (15) | 0.0435 (17) | −0.0045 (10) | 0.0101 (10) | 0.0060 (11) |
O4 | 0.0343 (15) | 0.0647 (17) | 0.109 (3) | −0.0041 (11) | −0.0167 (15) | −0.0058 (16) |
O3 | 0.0253 (12) | 0.092 (2) | 0.0547 (16) | −0.0101 (11) | 0.0029 (10) | 0.0050 (13) |
O5 | 0.0371 (13) | 0.0452 (13) | 0.105 (2) | −0.0065 (10) | −0.0149 (13) | −0.0014 (13) |
C13 | 0.0301 (14) | 0.0420 (15) | 0.0366 (18) | 0.0015 (11) | 0.0104 (12) | 0.0001 (12) |
C17 | 0.056 (2) | 0.0402 (16) | 0.050 (2) | −0.0028 (14) | 0.0208 (16) | −0.0012 (13) |
C9 | 0.0296 (15) | 0.0405 (15) | 0.044 (2) | −0.0018 (11) | 0.0129 (13) | −0.0009 (12) |
C7 | 0.0281 (14) | 0.0313 (13) | 0.040 (2) | −0.0027 (10) | 0.0060 (12) | 0.0008 (11) |
C14 | 0.0269 (14) | 0.0446 (16) | 0.044 (2) | 0.0017 (11) | 0.0127 (12) | 0.0010 (13) |
C11 | 0.054 (2) | 0.0433 (16) | 0.038 (2) | −0.0037 (14) | 0.0158 (15) | −0.0013 (13) |
C8 | 0.0247 (13) | 0.0328 (13) | 0.044 (2) | 0.0005 (10) | 0.0103 (12) | −0.0008 (11) |
C10 | 0.0435 (17) | 0.0418 (16) | 0.050 (2) | −0.0021 (13) | 0.0243 (15) | 0.0017 (13) |
C18 | 0.0367 (15) | 0.0448 (16) | 0.045 (2) | −0.0064 (12) | 0.0107 (13) | −0.0047 (13) |
C19 | 0.0232 (16) | 0.0506 (18) | 0.057 (2) | −0.0011 (12) | 0.0079 (14) | −0.0019 (14) |
C6 | 0.0256 (14) | 0.0360 (15) | 0.054 (2) | −0.0054 (11) | 0.0055 (13) | −0.0040 (13) |
C15 | 0.0336 (15) | 0.0553 (19) | 0.050 (2) | 0.0077 (13) | 0.0142 (13) | 0.0056 (15) |
C16 | 0.0466 (18) | 0.0494 (18) | 0.053 (2) | 0.0115 (14) | 0.0214 (15) | 0.0080 (14) |
C12 | 0.0401 (17) | 0.0398 (16) | 0.043 (2) | −0.0081 (12) | 0.0049 (14) | −0.0055 (12) |
N1 | 0.0223 (11) | 0.0340 (12) | 0.0523 (19) | 0.0035 (9) | 0.0108 (11) | 0.0060 (10) |
O1 | 0.0191 (10) | 0.0503 (13) | 0.0661 (16) | 0.0003 (8) | 0.0071 (9) | 0.0062 (10) |
C4 | 0.0290 (15) | 0.0531 (17) | 0.042 (2) | 0.0012 (12) | 0.0171 (13) | 0.0015 (13) |
C1 | 0.0281 (14) | 0.065 (2) | 0.047 (2) | −0.0006 (13) | 0.0187 (14) | 0.0026 (15) |
C3 | 0.0253 (14) | 0.0300 (12) | 0.0416 (19) | 0.0032 (10) | 0.0152 (12) | 0.0025 (11) |
C2 | 0.0277 (14) | 0.065 (2) | 0.042 (2) | −0.0003 (13) | 0.0157 (13) | −0.0003 (14) |
C5 | 0.0316 (15) | 0.0500 (17) | 0.047 (2) | 0.0025 (13) | 0.0108 (14) | 0.0025 (14) |
S2—C13 | 1.799 (3) | C11—C10 | 1.375 (5) |
S2—S1 | 2.0397 (10) | C11—C12 | 1.383 (5) |
S1—C8 | 1.786 (3) | C11—H11 | 0.9300 |
O2—C6 | 1.203 (4) | C10—H10 | 0.9300 |
O4—C19 | 1.194 (4) | C18—H18 | 0.9300 |
O3—C6 | 1.331 (4) | C15—C16 | 1.373 (5) |
O3—H3 | 0.8200 | C15—H15 | 0.9300 |
O5—C19 | 1.305 (4) | C16—H16 | 0.9300 |
O5—H55 | 0.8200 | C12—H12 | 0.9300 |
C13—C18 | 1.391 (4) | N1—C1 | 1.324 (4) |
C13—C14 | 1.404 (4) | N1—O1 | 1.336 (3) |
C17—C16 | 1.379 (5) | N1—C5 | 1.340 (4) |
C17—C18 | 1.380 (5) | C4—C5 | 1.369 (4) |
C17—H17 | 0.9300 | C4—C3 | 1.387 (5) |
C9—C10 | 1.376 (5) | C4—H4 | 0.9300 |
C9—C8 | 1.397 (4) | C1—C2 | 1.376 (4) |
C9—H9 | 0.9300 | C1—H1 | 0.9300 |
C7—C12 | 1.386 (5) | C3—C2 | 1.389 (4) |
C7—C8 | 1.408 (4) | C3—C3i | 1.484 (5) |
C7—C6 | 1.488 (4) | C2—H2 | 0.9300 |
C14—C15 | 1.391 (4) | C5—H5 | 0.9300 |
C14—C19 | 1.502 (4) | ||
C13—S2—S1 | 104.55 (10) | O4—C19—C14 | 123.5 (3) |
C8—S1—S2 | 104.49 (9) | O5—C19—C14 | 112.5 (3) |
C6—O3—H3 | 109.5 | O2—C6—O3 | 123.2 (3) |
C19—O5—H55 | 109.5 | O2—C6—C7 | 123.3 (3) |
C18—C13—C14 | 118.6 (3) | O3—C6—C7 | 113.5 (3) |
C18—C13—S2 | 120.9 (2) | C16—C15—C14 | 121.7 (3) |
C14—C13—S2 | 120.6 (2) | C16—C15—H15 | 119.2 |
C16—C17—C18 | 120.6 (3) | C14—C15—H15 | 119.2 |
C16—C17—H17 | 119.7 | C15—C16—C17 | 119.0 (3) |
C18—C17—H17 | 119.7 | C15—C16—H16 | 120.5 |
C10—C9—C8 | 120.8 (3) | C17—C16—H16 | 120.5 |
C10—C9—H9 | 119.6 | C11—C12—C7 | 121.2 (3) |
C8—C9—H9 | 119.6 | C11—C12—H12 | 119.4 |
C12—C7—C8 | 119.3 (3) | C7—C12—H12 | 119.4 |
C12—C7—C6 | 120.6 (3) | C1—N1—O1 | 120.2 (2) |
C8—C7—C6 | 120.1 (3) | C1—N1—C5 | 120.7 (3) |
C15—C14—C13 | 119.2 (3) | O1—N1—C5 | 119.0 (3) |
C15—C14—C19 | 116.4 (3) | C5—C4—C3 | 121.4 (3) |
C13—C14—C19 | 124.4 (3) | C5—C4—H4 | 119.3 |
C10—C11—C12 | 119.5 (3) | C3—C4—H4 | 119.3 |
C10—C11—H11 | 120.3 | N1—C1—C2 | 121.0 (3) |
C12—C11—H11 | 120.3 | N1—C1—H1 | 119.5 |
C9—C8—C7 | 118.6 (3) | C2—C1—H1 | 119.5 |
C9—C8—S1 | 121.5 (2) | C4—C3—C2 | 116.3 (3) |
C7—C8—S1 | 119.8 (2) | C4—C3—C3i | 122.8 (3) |
C11—C10—C9 | 120.6 (3) | C2—C3—C3i | 120.9 (3) |
C11—C10—H10 | 119.7 | C1—C2—C3 | 120.5 (3) |
C9—C10—H10 | 119.7 | C1—C2—H2 | 119.8 |
C17—C18—C13 | 120.9 (3) | C3—C2—H2 | 119.8 |
C17—C18—H18 | 119.5 | N1—C5—C4 | 120.0 (3) |
C13—C18—H18 | 119.5 | N1—C5—H5 | 120.0 |
O4—C19—O5 | 123.9 (3) | C4—C5—H5 | 120.0 |
C13—S2—S1—C8 | −86.15 (14) | C13—C14—C19—O5 | −12.7 (5) |
S1—S2—C13—C18 | 10.1 (3) | C12—C7—C6—O2 | 163.0 (3) |
S1—S2—C13—C14 | −169.3 (2) | C8—C7—C6—O2 | −15.1 (4) |
C18—C13—C14—C15 | −3.6 (5) | C12—C7—C6—O3 | −18.1 (4) |
S2—C13—C14—C15 | 175.9 (2) | C8—C7—C6—O3 | 163.8 (3) |
C18—C13—C14—C19 | 176.5 (3) | C13—C14—C15—C16 | 2.3 (5) |
S2—C13—C14—C19 | −4.1 (4) | C19—C14—C15—C16 | −177.7 (3) |
C10—C9—C8—C7 | −0.5 (4) | C14—C15—C16—C17 | 0.4 (5) |
C10—C9—C8—S1 | −178.8 (2) | C18—C17—C16—C15 | −1.9 (5) |
C12—C7—C8—C9 | −0.1 (4) | C10—C11—C12—C7 | −0.2 (5) |
C6—C7—C8—C9 | 178.1 (3) | C8—C7—C12—C11 | 0.4 (4) |
C12—C7—C8—S1 | 178.2 (2) | C6—C7—C12—C11 | −177.7 (3) |
C6—C7—C8—S1 | −3.6 (4) | O1—N1—C1—C2 | −179.6 (3) |
S2—S1—C8—C9 | 10.4 (2) | C5—N1—C1—C2 | −1.3 (5) |
S2—S1—C8—C7 | −167.9 (2) | C5—C4—C3—C2 | −0.4 (4) |
C12—C11—C10—C9 | −0.3 (5) | C5—C4—C3—C3i | 179.8 (3) |
C8—C9—C10—C11 | 0.7 (5) | N1—C1—C2—C3 | 0.8 (5) |
C16—C17—C18—C13 | 0.5 (5) | C4—C3—C2—C1 | 0.1 (5) |
C14—C13—C18—C17 | 2.2 (5) | C3i—C3—C2—C1 | 179.8 (3) |
S2—C13—C18—C17 | −177.2 (3) | C1—N1—C5—C4 | 0.9 (5) |
C15—C14—C19—O4 | −9.3 (5) | O1—N1—C5—C4 | 179.3 (3) |
C13—C14—C19—O4 | 170.6 (4) | C3—C4—C5—N1 | −0.1 (5) |
C15—C14—C19—O5 | 167.4 (3) |
Symmetry code: (i) −x+1/2, −y+1/2, −z+2. |
D—H···A | D—H | H···A | D···A | D—H···A |
O5—H55···O1ii | 0.82 | 1.77 | 2.583 (3) | 174 |
O3—H3···O1iii | 0.82 | 1.86 | 2.672 (3) | 170 |
O5—H55···N1ii | 0.82 | 2.50 | 3.255 (3) | 154 |
C17—H17···O2iv | 0.93 | 2.59 | 3.359 (4) | 140 |
Symmetry codes: (ii) x+1/2, −y+1/2, z−1/2; (iii) −x, −y, −z+1; (iv) −x+1/2, y−1/2, −z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C14H10O4S2·0.5C10H8N2O2 |
Mr | 400.45 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 291 |
a, b, c (Å) | 21.314 (2), 10.5621 (8), 16.005 (8) |
β (°) | 105.412 (8) |
V (Å3) | 3473.5 (18) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.34 |
Crystal size (mm) | 0.22 × 0.18 × 0.12 |
Data collection | |
Diffractometer | Rigaku AFC-7S diffractometer |
Absorption correction | ψ scan (North et al., 1968) |
Tmin, Tmax | 0.951, 0.990 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 3066, 2781, 2658 |
Rint | 0.046 |
(sin θ/λ)max (Å−1) | 0.596 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.065, 0.192, 1.11 |
No. of reflections | 2781 |
No. of parameters | 244 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.74, −0.47 |
Computer programs: MSC/AFC Diffractometer Control Software (Molecular Structure Corporation, 1993), TEXSAN (Molecular Structure Corporation, 1995), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997) and Mercury (Macrae et al., 2006), WinGX (Farrugia, 1999).
D—H···A | D—H | H···A | D···A | D—H···A |
O5—H55···O1i | 0.82 | 1.77 | 2.583 (3) | 173.8 |
O3—H3···O1ii | 0.82 | 1.86 | 2.672 (3) | 170.1 |
O5—H55···N1i | 0.82 | 2.50 | 3.255 (3) | 153.9 |
C17—H17···O2iii | 0.93 | 2.59 | 3.359 (4) | 139.8 |
Symmetry codes: (i) x+1/2, −y+1/2, z−1/2; (ii) −x, −y, −z+1; (iii) −x+1/2, y−1/2, −z+1/2. |
Acknowledgements
RMF is grateful to the Spanish Research Council (CSIC) for the use of a free-of-charge licence to the Cambridge Structural Database (Allen, 2002). RMF also wishes to thank the Universidad del Valle, Colombia, and the Instituto de Física de São Carlos, Brasil, for partial financial support. LR acknowledges CNPq Brazil for a research fellowship.
References
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The title compound, C14H10O4S2, 0.5(C10H8N2O2), (I), belongs to a series of molecular systems based on 4,4'-bipyridyl N,N'-dioxide (DPNO) with diverse hydrogen-bond donors, that has been synthesized in our research group (Moreno-Fuquen et al., 2003). Several authors have reported the formation of co-crystals from DPNO moiety (Lou & Huang, 2007; Reddy et al., 2006), taking advantage of the strong acceptor character of the N-oxide group. Initially, it was unclear which intermolecular hydrogen bond is formed: S—H ··· O or O—H ··· O. The oxidation of sulfhydryl (S—H) group, of the 2-mercaptobenzoic acid (MBA), allows the formation of 2,2'-dicarboxyphenyldisulfide molecule (CPS), which enters in the reaction with DPNO to form the title co-crystal. The strong S—S disulfide bond formed in this structure, is important in linking polypeptide chains of proteins (Gortner & Hoffman, 1941). A perspective view of the molecule of the title compound, showing the atomic numbering scheme, is given in Fig. 1. The DPNO and CPS molecules are held together by an intermolecular hydrogen bonds between the O1 atom of the N-oxide group of DPNO and the O5 and O3 of the CPS molecule, with O···O distances of 2.583 (3) and 2.672 (3) Å respectively. The central S1—S2 bond length is 2.0397 (10) Å and the Car-S—S-Car torsion angle is -86.15 (14)%. There are no intramolecular O—H ··· S bonds in the structure. It is noted however, that carboxylic groups of the CPS molecule, exhibit different behaviors with respect to the presence of the neighboring sulfur atom. Indeed, while one of the O—H group of carboxylic group is oriented away from the S1 atom [torsion angle C13 C14 C19 O5, -12.7 (5)°], the second O—H group is oriented near to S2 atom [torsion angle C8 C7 C6 O3 163.8 (3)]. the DPNO molecule is almost coplanar with one of the planes of the CPS molecule showing a dihedral angle of 0.71 (7)°. With the other plane of CPS, the DPNO molecule forms a dihedral angle of 82.52 (11)°. The growth of the crystal system can be explained through a hydrogen bonding scheme (Table 1) (Nardelli, 1995). The title molecule is characterized by the formation of O—H···O and O—H···N hydrogen bonds and other weak C—H···O interactions. In a first substructure atom O5 in the molecule at (x+1/2,-y+1/2,+z-1/2) and atom O3 in the molecule at (-x,-y,-z+1) act simultaneously as hydrogen bond donors to O1 atom in the molecule at (x,y,z). In turn, the O5 atom is linked to the N1 atom at (x,y,z). The propagation of these interactions forms a large R76(57) ring (Etter, 1990) in the (1 0 -2) plane (Fig. 2). In a second substructure, atom C17 in the molecule at (x,y,z) acts as hydrogen bond donor to O2 atom in the molecule at -x+1/2,+y-1/2,-z+1/2. The propagation of this interaction forms C(11) continuous chains and running along [010] direction. All of these interactions define an infinite two-dimensional network for the structure (I) (Fig. 3).