
Acta Cryst. (2008). E64, o1036-o1037 [ doi:10.1107/S1600536808013081 ]
In the title compound, C27H27N3O3S3·CH4O, the dihedral angles formed by the mesitylene ring with the three oxopyridyl rings are 89.6 (1), 75.5 (1) and 80.69 (1)°, indicating that all three are nearly perpendicular to the mesitylene ring. Intramolecular C-H
S hydrogen bonds generate S(6) ring motifs. The crystal structure is stabilized by intramolecular C-H
S and intermolecular C-H
O hydrogen bonds and weak C-H
interactions.
A mixture of tris(bromomethyl)mesitylene (0.399 g, 1 mmol) and 1-hydroxypyridine-2-thione sodium salt (0.448 g, 3 mmol) in water (30 ml) and methanol (30 ml) was heated at 333 K with stirring for 30 min. The compound formed was filtered off, and dried (0.494 g, 92%). The compound was recrystallized from chloroform-methanol (1:2 v/v).
H atoms were positioned geometrically [C—H = 0.93 (aromatic), 0.96 Å (methyl) 0.97 Å (methylene), and 0.82Å O—H] and refined using a riding model, with Uiso(H) = 1.2 or -1.5Ueq(C).
Data collection: CAD-4 Software (Enraf–Nonius, 1989); cell refinement: CAD-4 Software (Enraf–Nonius, 1989); data reduction: CAD-4 Software (Enraf–Nonius, 1989); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).
| Fig. 1. The molecular structure of the title compound, showing 30% probability displacement ellipsoids and the atomic numbering scheme. |
| C27H27N3O3S3·CH4O | F000 = 1200 |
| Mr = 569.74 | Dx = 1.372 Mg m−3 |
| Monoclinic, P21/c | Cu Kα radiation λ = 1.54178 Å |
| Hall symbol: -P 2ybc | Cell parameters from 25 reflections |
| a = 11.9644 (17) Å | θ = 61–69º |
| b = 14.9129 (8) Å | µ = 2.78 mm−1 |
| c = 15.467 (2) Å | T = 298 (2) K |
| β = 91.733 (7)º | Block, colourless |
| V = 2758.4 (6) Å3 | 0.52 × 0.42 × 0.06 mm |
| Z = 4 |
| Enraf–Nonius CAD-4 diffractometer | θmax = 69.9º |
| Monochromator: graphite | θmin = 3.7º |
| ω/2θ scans | h = 0→14 |
| Absorption correction: ψ scan (North et al., 1968) | k = −18→0 |
| Tmin = 0.296, Tmax = 0.842 | l = −18→18 |
| 5226 measured reflections | 3 standard reflections |
| 5226 independent reflections | every 60 min |
| 4156 reflections with I > 2σ(I) | intensity decay: 3% |
| Rint = 0 |
| Refinement on F2 | 12 restraints |
| Least-squares matrix: full | H-atom parameters constrained |
| R[F2 > 2σ(F2)] = 0.051 | w = 1/[σ2(Fo2) + (0.0834P)2 + 0.7123P] where P = (Fo2 + 2Fc2)/3 |
| wR(F2) = 0.150 | (Δ/σ)max = 0.001 |
| S = 1.09 | Δρmax = 0.49 e Å−3 |
| 5226 reflections | Δρmin = −0.32 e Å−3 |
| 347 parameters | Extinction correction: none |
| C27H27N3O3S3·CH4O | V = 2758.4 (6) Å3 |
| Mr = 569.74 | Z = 4 |
| Monoclinic, P21/c | Cu Kα |
| a = 11.9644 (17) Å | µ = 2.78 mm−1 |
| b = 14.9129 (8) Å | T = 298 (2) K |
| c = 15.467 (2) Å | 0.52 × 0.42 × 0.06 mm |
| β = 91.733 (7)º |
| Enraf–Nonius CAD-4 diffractometer | 4156 reflections with I > 2σ(I) |
| Absorption correction: ψ scan (North et al., 1968) | Rint = 0 |
| Tmin = 0.296, Tmax = 0.842 | 3 standard reflections |
| 5226 measured reflections | every 60 min |
| 5226 independent reflections | intensity decay: 3% |
| R[F2 > 2σ(F2)] = 0.051 | 12 restraints |
| wR(F2) = 0.150 | H-atom parameters constrained |
| S = 1.09 | Δρmax = 0.49 e Å−3 |
| 5226 reflections | Δρmin = −0.32 e Å−3 |
| 347 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
| x | y | z | Uiso*/Ueq | ||
| C1 | 0.3585 (2) | 0.25409 (17) | −0.03619 (16) | 0.0411 (6) | |
| C2 | 0.4031 (2) | 0.2831 (2) | −0.11233 (17) | 0.0509 (7) | |
| H2 | 0.4415 | 0.3372 | −0.114 | 0.061* | |
| C3 | 0.3906 (3) | 0.2318 (2) | −0.18594 (19) | 0.0595 (8) | |
| H3 | 0.4189 | 0.2516 | −0.2379 | 0.071* | |
| C4 | 0.3357 (3) | 0.1508 (2) | −0.1818 (2) | 0.0627 (8) | |
| H4 | 0.3283 | 0.1149 | −0.2307 | 0.075* | |
| C5 | 0.2921 (3) | 0.1234 (2) | −0.1054 (2) | 0.0593 (8) | |
| H5 | 0.2552 | 0.0686 | −0.1028 | 0.071* | |
| N6 | 0.30179 (19) | 0.17480 (15) | −0.03383 (15) | 0.0475 (5) | |
| O7 | 0.2579 (2) | 0.15045 (15) | 0.03880 (14) | 0.0660 (6) | |
| S8 | 0.36161 (6) | 0.30782 (4) | 0.06449 (4) | 0.04599 (19) | |
| C9 | 0.4460 (2) | 0.40587 (17) | 0.04115 (15) | 0.0442 (6) | |
| H9A | 0.5203 | 0.3879 | 0.0245 | 0.053* | |
| H9B | 0.4117 | 0.4404 | −0.0057 | 0.053* | |
| C10 | 0.4525 (2) | 0.46111 (16) | 0.12348 (15) | 0.0380 (5) | |
| C11 | 0.3677 (2) | 0.52357 (17) | 0.13909 (16) | 0.0407 (5) | |
| C12 | 0.3725 (2) | 0.57310 (16) | 0.21599 (16) | 0.0401 (5) | |
| C13 | 0.4580 (2) | 0.55854 (16) | 0.27863 (16) | 0.0401 (5) | |
| C14 | 0.5453 (2) | 0.49992 (16) | 0.25966 (15) | 0.0384 (5) | |
| C15 | 0.5413 (2) | 0.44950 (16) | 0.18286 (15) | 0.0384 (5) | |
| C16 | 0.2719 (3) | 0.5372 (2) | 0.07464 (19) | 0.0551 (7) | |
| H16A | 0.2881 | 0.5871 | 0.0378 | 0.083* | |
| H16B | 0.2047 | 0.5491 | 0.1049 | 0.083* | |
| H16C | 0.2621 | 0.4841 | 0.0401 | 0.083* | |
| C17 | 0.4548 (3) | 0.6036 (2) | 0.36637 (19) | 0.0588 (8) | |
| H17A | 0.4966 | 0.6585 | 0.3652 | 0.088* | |
| H17B | 0.487 | 0.5645 | 0.4096 | 0.088* | |
| H17C | 0.3786 | 0.6164 | 0.3799 | 0.088* | |
| C18 | 0.6333 (3) | 0.3827 (2) | 0.16668 (19) | 0.0535 (7) | |
| H18A | 0.6067 | 0.3384 | 0.126 | 0.08* | |
| H18B | 0.6552 | 0.354 | 0.2201 | 0.08* | |
| H18C | 0.6964 | 0.4133 | 0.1437 | 0.08* | |
| C19 | 0.2853 (2) | 0.64413 (18) | 0.2303 (2) | 0.0489 (6) | |
| H19A | 0.2688 | 0.6758 | 0.1766 | 0.059* | |
| H19B | 0.313 | 0.6872 | 0.2728 | 0.059* | |
| S20 | 0.15895 (7) | 0.59076 (5) | 0.26844 (6) | 0.0598 (2) | |
| C21 | 0.0714 (2) | 0.6832 (2) | 0.2755 (2) | 0.0534 (7) | |
| C22 | 0.0959 (3) | 0.7726 (2) | 0.2634 (2) | 0.0627 (8) | |
| H22 | 0.167 | 0.7891 | 0.2465 | 0.075* | |
| C23 | 0.0164 (3) | 0.8378 (3) | 0.2760 (3) | 0.0754 (10) | |
| H23 | 0.0333 | 0.898 | 0.2674 | 0.09* | |
| C24 | −0.0876 (3) | 0.8128 (3) | 0.3012 (3) | 0.0837 (12) | |
| H24 | −0.1412 | 0.8561 | 0.3121 | 0.1* | |
| C25 | −0.1127 (3) | 0.7240 (3) | 0.3104 (3) | 0.0831 (12) | |
| H25 | −0.1841 | 0.7072 | 0.3263 | 0.1* | |
| N26 | −0.0351 (2) | 0.6605 (2) | 0.29666 (19) | 0.0687 (8) | |
| O27 | −0.0591 (2) | 0.57455 (19) | 0.3027 (2) | 0.0984 (10) | |
| C28 | 0.6442 (2) | 0.49055 (18) | 0.32203 (17) | 0.0450 (6) | |
| H28A | 0.6531 | 0.5448 | 0.3561 | 0.054* | |
| H28B | 0.712 | 0.4813 | 0.2903 | 0.054* | |
| S29 | 0.62016 (6) | 0.39480 (5) | 0.39312 (5) | 0.0517 (2) | |
| C30 | 0.7555 (2) | 0.37491 (19) | 0.43343 (17) | 0.0475 (6) | |
| C31 | 0.8492 (3) | 0.4281 (2) | 0.4247 (2) | 0.0604 (8) | |
| H31 | 0.8431 | 0.4844 | 0.3993 | 0.073* | |
| C32 | 0.9529 (3) | 0.3962 (3) | 0.4545 (3) | 0.0771 (10) | |
| H32 | 1.0171 | 0.4301 | 0.4475 | 0.093* | |
| C33 | 0.9589 (4) | 0.3142 (3) | 0.4943 (3) | 0.0871 (13) | |
| H33 | 1.0278 | 0.2922 | 0.5142 | 0.104* | |
| C34 | 0.8648 (4) | 0.2647 (3) | 0.5050 (2) | 0.0772 (11) | |
| H34 | 0.8701 | 0.2094 | 0.5327 | 0.093* | |
| N35 | 0.7633 (2) | 0.29458 (17) | 0.47588 (16) | 0.0572 (6) | |
| O36 | 0.6727 (2) | 0.24782 (16) | 0.48565 (16) | 0.0756 (7) | |
| O1L | −0.1572 (5) | 0.5507 (4) | 0.1374 (4) | 0.205 (2) | |
| H1L | −0.12 | 0.5136 | 0.1649 | 0.308* | |
| C2L | −0.0867 (7) | 0.5996 (6) | 0.0829 (5) | 0.189 (3) | |
| H2LA | −0.0521 | 0.6478 | 0.115 | 0.284* | |
| H2LB | −0.1301 | 0.6237 | 0.0351 | 0.284* | |
| H2LC | −0.03 | 0.5606 | 0.0615 | 0.284* |
| U11 | U22 | U33 | U12 | U13 | U23 | |
| C1 | 0.0480 (14) | 0.0322 (12) | 0.0432 (13) | 0.0010 (10) | 0.0013 (11) | −0.0040 (10) |
| C2 | 0.0599 (16) | 0.0485 (16) | 0.0447 (14) | −0.0036 (13) | 0.0087 (12) | −0.0060 (12) |
| C3 | 0.0659 (19) | 0.066 (2) | 0.0471 (15) | 0.0032 (16) | 0.0085 (14) | −0.0108 (14) |
| C4 | 0.0639 (18) | 0.065 (2) | 0.0594 (18) | 0.0085 (16) | −0.0044 (15) | −0.0287 (16) |
| C5 | 0.0639 (18) | 0.0428 (16) | 0.071 (2) | −0.0009 (14) | −0.0044 (15) | −0.0194 (14) |
| N6 | 0.0517 (12) | 0.0371 (12) | 0.0536 (13) | −0.0005 (10) | 0.0007 (10) | −0.0030 (10) |
| O7 | 0.0869 (16) | 0.0497 (12) | 0.0620 (13) | −0.0199 (11) | 0.0136 (12) | 0.0040 (10) |
| S8 | 0.0649 (4) | 0.0383 (3) | 0.0351 (3) | −0.0115 (3) | 0.0081 (3) | −0.0010 (2) |
| C9 | 0.0598 (16) | 0.0381 (14) | 0.0352 (12) | −0.0108 (12) | 0.0078 (11) | −0.0017 (10) |
| C10 | 0.0494 (14) | 0.0304 (12) | 0.0346 (12) | −0.0079 (10) | 0.0060 (10) | 0.0004 (9) |
| C11 | 0.0465 (13) | 0.0332 (12) | 0.0425 (13) | −0.0049 (10) | 0.0034 (11) | 0.0048 (10) |
| C12 | 0.0450 (13) | 0.0290 (12) | 0.0467 (13) | −0.0001 (10) | 0.0082 (11) | 0.0028 (10) |
| C13 | 0.0497 (14) | 0.0294 (12) | 0.0416 (13) | 0.0001 (10) | 0.0079 (11) | −0.0017 (10) |
| C14 | 0.0464 (13) | 0.0305 (12) | 0.0384 (12) | −0.0026 (10) | 0.0037 (10) | 0.0024 (10) |
| C15 | 0.0477 (13) | 0.0293 (12) | 0.0387 (12) | −0.0008 (10) | 0.0094 (10) | 0.0007 (9) |
| C16 | 0.0574 (17) | 0.0541 (17) | 0.0534 (16) | 0.0011 (14) | −0.0053 (13) | 0.0049 (13) |
| C17 | 0.074 (2) | 0.0518 (17) | 0.0513 (16) | 0.0057 (15) | 0.0062 (14) | −0.0164 (13) |
| C18 | 0.0585 (17) | 0.0464 (16) | 0.0557 (16) | 0.0127 (13) | 0.0063 (13) | −0.0059 (13) |
| C19 | 0.0485 (14) | 0.0331 (13) | 0.0655 (17) | 0.0037 (11) | 0.0095 (13) | 0.0016 (12) |
| S20 | 0.0567 (4) | 0.0417 (4) | 0.0823 (5) | 0.0054 (3) | 0.0209 (4) | 0.0093 (3) |
| C21 | 0.0492 (15) | 0.0523 (17) | 0.0592 (17) | 0.0065 (13) | 0.0094 (13) | 0.0061 (13) |
| C22 | 0.0565 (17) | 0.0502 (17) | 0.082 (2) | 0.0055 (14) | 0.0066 (16) | 0.0005 (16) |
| C23 | 0.073 (2) | 0.054 (2) | 0.100 (3) | 0.0166 (18) | 0.006 (2) | 0.0046 (19) |
| C24 | 0.074 (2) | 0.078 (3) | 0.099 (3) | 0.032 (2) | 0.014 (2) | 0.010 (2) |
| C25 | 0.0563 (19) | 0.096 (3) | 0.099 (3) | 0.020 (2) | 0.0250 (19) | 0.020 (2) |
| N26 | 0.0583 (15) | 0.0674 (18) | 0.0815 (19) | 0.0050 (14) | 0.0231 (14) | 0.0188 (15) |
| O27 | 0.0813 (18) | 0.0709 (17) | 0.146 (3) | −0.0036 (14) | 0.0488 (18) | 0.0273 (17) |
| C28 | 0.0495 (14) | 0.0383 (14) | 0.0471 (14) | −0.0038 (11) | −0.0007 (12) | 0.0030 (11) |
| S29 | 0.0522 (4) | 0.0503 (4) | 0.0524 (4) | −0.0049 (3) | −0.0013 (3) | 0.0111 (3) |
| C30 | 0.0598 (16) | 0.0425 (14) | 0.0399 (13) | 0.0037 (12) | −0.0041 (12) | −0.0029 (11) |
| C31 | 0.0605 (18) | 0.0562 (18) | 0.0639 (18) | −0.0008 (15) | −0.0104 (15) | −0.0032 (15) |
| C32 | 0.058 (2) | 0.085 (3) | 0.087 (3) | 0.0017 (18) | −0.0141 (18) | −0.015 (2) |
| C33 | 0.080 (3) | 0.092 (3) | 0.087 (3) | 0.030 (2) | −0.032 (2) | −0.016 (2) |
| C34 | 0.101 (3) | 0.066 (2) | 0.064 (2) | 0.025 (2) | −0.022 (2) | 0.0010 (17) |
| N35 | 0.0801 (18) | 0.0444 (14) | 0.0467 (13) | 0.0080 (13) | −0.0035 (12) | 0.0002 (11) |
| O36 | 0.0988 (18) | 0.0528 (14) | 0.0755 (15) | −0.0065 (13) | 0.0083 (14) | 0.0178 (12) |
| O1L | 0.213 (4) | 0.187 (4) | 0.214 (4) | −0.065 (4) | −0.012 (3) | −0.012 (3) |
| C2L | 0.178 (5) | 0.210 (5) | 0.179 (5) | −0.041 (4) | −0.017 (4) | 0.006 (4) |
| C1—N6 | 1.364 (3) | C19—S20 | 1.822 (3) |
| C1—C2 | 1.377 (4) | C19—H19A | 0.97 |
| C1—S8 | 1.751 (2) | C19—H19B | 0.97 |
| C2—C3 | 1.376 (4) | S20—C21 | 1.737 (3) |
| C2—H2 | 0.93 | C21—N26 | 1.368 (4) |
| C3—C4 | 1.377 (5) | C21—C22 | 1.378 (4) |
| C3—H3 | 0.93 | C22—C23 | 1.379 (4) |
| C4—C5 | 1.368 (5) | C22—H22 | 0.93 |
| C4—H4 | 0.93 | C23—C24 | 1.368 (5) |
| C5—N6 | 1.349 (4) | C23—H23 | 0.93 |
| C5—H5 | 0.93 | C24—C25 | 1.366 (6) |
| N6—O7 | 1.306 (3) | C24—H24 | 0.93 |
| S8—C9 | 1.820 (3) | C25—N26 | 1.348 (5) |
| C9—C10 | 1.517 (3) | C25—H25 | 0.93 |
| C9—H9A | 0.97 | N26—O27 | 1.318 (4) |
| C9—H9B | 0.97 | C28—S29 | 1.830 (3) |
| C10—C15 | 1.394 (4) | C28—H28A | 0.97 |
| C10—C11 | 1.404 (4) | C28—H28B | 0.97 |
| C11—C12 | 1.400 (4) | S29—C30 | 1.742 (3) |
| C11—C16 | 1.510 (4) | C30—N35 | 1.368 (4) |
| C12—C13 | 1.404 (4) | C30—C31 | 1.384 (4) |
| C12—C19 | 1.508 (3) | C31—C32 | 1.394 (5) |
| C13—C14 | 1.400 (3) | C31—H31 | 0.93 |
| C13—C17 | 1.516 (4) | C32—C33 | 1.370 (6) |
| C14—C15 | 1.406 (3) | C32—H32 | 0.93 |
| C14—C28 | 1.510 (3) | C33—C34 | 1.361 (6) |
| C15—C18 | 1.511 (4) | C33—H33 | 0.93 |
| C16—H16A | 0.96 | C34—N35 | 1.358 (4) |
| C16—H16B | 0.96 | C34—H34 | 0.93 |
| C16—H16C | 0.96 | N35—O36 | 1.302 (4) |
| C17—H17A | 0.96 | O1L—C2L | 1.414 (9) |
| C17—H17B | 0.96 | O1L—H1L | 0.82 |
| C17—H17C | 0.96 | C2L—H2LA | 0.96 |
| C18—H18A | 0.96 | C2L—H2LB | 0.96 |
| C18—H18B | 0.96 | C2L—H2LC | 0.96 |
| C18—H18C | 0.96 | ||
| N6—C1—C2 | 120.1 (2) | H18A—C18—H18C | 109.5 |
| N6—C1—S8 | 111.72 (18) | H18B—C18—H18C | 109.5 |
| C2—C1—S8 | 128.2 (2) | C12—C19—S20 | 108.98 (18) |
| C3—C2—C1 | 119.8 (3) | C12—C19—H19A | 109.9 |
| C3—C2—H2 | 120.1 | S20—C19—H19A | 109.9 |
| C1—C2—H2 | 120.1 | C12—C19—H19B | 109.9 |
| C2—C3—C4 | 119.3 (3) | S20—C19—H19B | 109.9 |
| C2—C3—H3 | 120.4 | H19A—C19—H19B | 108.3 |
| C4—C3—H3 | 120.4 | C21—S20—C19 | 100.44 (13) |
| C5—C4—C3 | 119.8 (3) | N26—C21—C22 | 118.4 (3) |
| C5—C4—H4 | 120.1 | N26—C21—S20 | 112.7 (2) |
| C3—C4—H4 | 120.1 | C22—C21—S20 | 128.9 (2) |
| N6—C5—C4 | 120.9 (3) | C21—C22—C23 | 120.8 (3) |
| N6—C5—H5 | 119.6 | C21—C22—H22 | 119.6 |
| C4—C5—H5 | 119.6 | C23—C22—H22 | 119.6 |
| O7—N6—C5 | 121.4 (2) | C24—C23—C22 | 119.0 (4) |
| O7—N6—C1 | 118.5 (2) | C24—C23—H23 | 120.5 |
| C5—N6—C1 | 120.1 (3) | C22—C23—H23 | 120.5 |
| C1—S8—C9 | 100.86 (12) | C25—C24—C23 | 119.9 (3) |
| C10—C9—S8 | 106.53 (16) | C25—C24—H24 | 120 |
| C10—C9—H9A | 110.4 | C23—C24—H24 | 120 |
| S8—C9—H9A | 110.4 | N26—C25—C24 | 120.7 (3) |
| C10—C9—H9B | 110.4 | N26—C25—H25 | 119.7 |
| S8—C9—H9B | 110.4 | C24—C25—H25 | 119.7 |
| H9A—C9—H9B | 108.6 | O27—N26—C25 | 121.3 (3) |
| C15—C10—C11 | 120.6 (2) | O27—N26—C21 | 117.7 (3) |
| C15—C10—C9 | 120.3 (2) | C25—N26—C21 | 121.0 (3) |
| C11—C10—C9 | 119.1 (2) | C14—C28—S29 | 108.76 (17) |
| C12—C11—C10 | 119.0 (2) | C14—C28—H28A | 109.9 |
| C12—C11—C16 | 120.1 (2) | S29—C28—H28A | 109.9 |
| C10—C11—C16 | 120.9 (2) | C14—C28—H28B | 109.9 |
| C11—C12—C13 | 121.0 (2) | S29—C28—H28B | 109.9 |
| C11—C12—C19 | 119.0 (2) | H28A—C28—H28B | 108.3 |
| C13—C12—C19 | 120.0 (2) | C30—S29—C28 | 100.76 (13) |
| C14—C13—C12 | 119.0 (2) | N35—C30—C31 | 120.3 (3) |
| C14—C13—C17 | 120.3 (2) | N35—C30—S29 | 111.7 (2) |
| C12—C13—C17 | 120.7 (2) | C31—C30—S29 | 127.9 (2) |
| C13—C14—C15 | 120.3 (2) | C30—C31—C32 | 119.2 (3) |
| C13—C14—C28 | 119.9 (2) | C30—C31—H31 | 120.4 |
| C15—C14—C28 | 119.8 (2) | C32—C31—H31 | 120.4 |
| C10—C15—C14 | 119.8 (2) | C33—C32—C31 | 119.2 (4) |
| C10—C15—C18 | 121.1 (2) | C33—C32—H32 | 120.4 |
| C14—C15—C18 | 119.1 (2) | C31—C32—H32 | 120.4 |
| C11—C16—H16A | 109.5 | C34—C33—C32 | 120.4 (4) |
| C11—C16—H16B | 109.5 | C34—C33—H33 | 119.8 |
| H16A—C16—H16B | 109.5 | C32—C33—H33 | 119.8 |
| C11—C16—H16C | 109.5 | N35—C34—C33 | 121.1 (4) |
| H16A—C16—H16C | 109.5 | N35—C34—H34 | 119.4 |
| H16B—C16—H16C | 109.5 | C33—C34—H34 | 119.4 |
| C13—C17—H17A | 109.5 | O36—N35—C34 | 121.7 (3) |
| C13—C17—H17B | 109.5 | O36—N35—C30 | 118.7 (3) |
| H17A—C17—H17B | 109.5 | C34—N35—C30 | 119.6 (3) |
| C13—C17—H17C | 109.5 | C2L—O1L—H1L | 109.5 |
| H17A—C17—H17C | 109.5 | O1L—C2L—H2LA | 109.5 |
| H17B—C17—H17C | 109.5 | O1L—C2L—H2LB | 109.5 |
| C15—C18—H18A | 109.5 | H2LA—C2L—H2LB | 109.5 |
| C15—C18—H18B | 109.5 | O1L—C2L—H2LC | 109.5 |
| H18A—C18—H18B | 109.5 | H2LA—C2L—H2LC | 109.5 |
| C15—C18—H18C | 109.5 | H2LB—C2L—H2LC | 109.5 |
| N6—C1—C2—C3 | −0.2 (4) | C13—C14—C15—C10 | 3.0 (3) |
| S8—C1—C2—C3 | −178.9 (2) | C28—C14—C15—C10 | −177.1 (2) |
| C1—C2—C3—C4 | −1.6 (5) | C13—C14—C15—C18 | −176.4 (2) |
| C2—C3—C4—C5 | 1.6 (5) | C28—C14—C15—C18 | 3.5 (3) |
| C3—C4—C5—N6 | 0.2 (5) | C11—C12—C19—S20 | 81.2 (3) |
| C4—C5—N6—O7 | 178.1 (3) | C13—C12—C19—S20 | −99.9 (2) |
| C4—C5—N6—C1 | −1.9 (4) | C12—C19—S20—C21 | −177.6 (2) |
| C2—C1—N6—O7 | −178.1 (3) | C19—S20—C21—N26 | 174.9 (2) |
| S8—C1—N6—O7 | 0.8 (3) | C19—S20—C21—C22 | −5.5 (4) |
| C2—C1—N6—C5 | 1.9 (4) | N26—C21—C22—C23 | 2.8 (5) |
| S8—C1—N6—C5 | −179.1 (2) | S20—C21—C22—C23 | −176.7 (3) |
| N6—C1—S8—C9 | 177.65 (19) | C21—C22—C23—C24 | 0.3 (6) |
| C2—C1—S8—C9 | −3.5 (3) | C22—C23—C24—C25 | −2.5 (7) |
| C1—S8—C9—C10 | 178.14 (19) | C23—C24—C25—N26 | 1.5 (7) |
| S8—C9—C10—C15 | 92.9 (2) | C24—C25—N26—O27 | −177.9 (4) |
| S8—C9—C10—C11 | −86.7 (2) | C24—C25—N26—C21 | 1.8 (6) |
| C15—C10—C11—C12 | −1.1 (3) | C22—C21—N26—O27 | 175.8 (3) |
| C9—C10—C11—C12 | 178.6 (2) | S20—C21—N26—O27 | −4.5 (4) |
| C15—C10—C11—C16 | 179.3 (2) | C22—C21—N26—C25 | −3.9 (5) |
| C9—C10—C11—C16 | −1.0 (3) | S20—C21—N26—C25 | 175.7 (3) |
| C10—C11—C12—C13 | −2.6 (4) | C13—C14—C28—S29 | 94.8 (2) |
| C16—C11—C12—C13 | 177.0 (2) | C15—C14—C28—S29 | −85.0 (2) |
| C10—C11—C12—C19 | 176.3 (2) | C14—C28—S29—C30 | 162.19 (18) |
| C16—C11—C12—C19 | −4.1 (4) | C28—S29—C30—N35 | −168.0 (2) |
| C11—C12—C13—C14 | 6.3 (4) | C28—S29—C30—C31 | 10.1 (3) |
| C19—C12—C13—C14 | −172.5 (2) | N35—C30—C31—C32 | 4.3 (5) |
| C11—C12—C13—C17 | −172.2 (2) | S29—C30—C31—C32 | −173.7 (3) |
| C19—C12—C13—C17 | 9.0 (4) | C30—C31—C32—C33 | −2.1 (5) |
| C12—C13—C14—C15 | −6.5 (3) | C31—C32—C33—C34 | −0.3 (6) |
| C17—C13—C14—C15 | 172.0 (2) | C32—C33—C34—N35 | 0.7 (6) |
| C12—C13—C14—C28 | 173.6 (2) | C33—C34—N35—O36 | 180.0 (3) |
| C17—C13—C14—C28 | −7.9 (4) | C33—C34—N35—C30 | 1.4 (5) |
| C11—C10—C15—C14 | 0.8 (3) | C31—C30—N35—O36 | 177.5 (3) |
| C9—C10—C15—C14 | −178.9 (2) | S29—C30—N35—O36 | −4.2 (3) |
| C11—C10—C15—C18 | −179.8 (2) | C31—C30—N35—C34 | −3.9 (4) |
| C9—C10—C15—C18 | 0.5 (3) | S29—C30—N35—C34 | 174.3 (2) |
| D—H···A | D—H | H···A | D···A | D—H···A |
| O1L—H1L···O27 | 0.82 | 2.41 | 2.804 (7) | 110 |
| C16—H16A···O36i | 0.96 | 2.47 | 3.348 (4) | 152 |
| C16—H16B···S20 | 0.96 | 2.68 | 3.420 (3) | 135 |
| C18—H18B···S29 | 0.96 | 2.79 | 3.515 (3) | 133 |
| C25—H25···O7ii | 0.93 | 2.44 | 3.147 (5) | 133 |
| C28—H28A···O7i | 0.97 | 2.48 | 3.397 (3) | 157 |
| C31—H31···O27iii | 0.93 | 2.35 | 3.107 (4) | 139 |
| C2—H2···Cg1iv | 0.93 | 2.91 | 3.774 (3) | 154 |
| C4—H4···Cg1v | 0.93 | 2.67 | 3.377 (3) | 134 |
| Symmetry codes: (i) −x+1, y+1/2, −z+1/2; (ii) −x, y+1/2, −z+1/2; (iii) x+1, y, z; (iv) −x+1, −y+1, −z; (v) x, −y−1/2, z−3/2. |
| D—H···A | D—H | H···A | D···A | D—H···A |
| O1L—H1L···O27 | 0.82 | 2.41 | 2.804 (7) | 110 |
| C16—H16A···O36i | 0.96 | 2.47 | 3.348 (4) | 152 |
| C16—H16B···S20 | 0.96 | 2.68 | 3.420 (3) | 135 |
| C18—H18B···S29 | 0.96 | 2.79 | 3.515 (3) | 133 |
| C25—H25···O7ii | 0.93 | 2.44 | 3.147 (5) | 133 |
| C28—H28A···O7i | 0.97 | 2.48 | 3.397 (3) | 157 |
| C31—H31···O27iii | 0.93 | 2.35 | 3.107 (4) | 139 |
| C2—H2···Cg1iv | 0.93 | 2.91 | 3.774 (3) | 154 |
| C4—H4···Cg1v | 0.93 | 2.67 | 3.377 (3) | 134 |
| Symmetry codes: (i) −x+1, y+1/2, −z+1/2; (ii) −x, y+1/2, −z+1/2; (iii) x+1, y, z; (iv) −x+1, −y+1, −z; (v) x, −y−1/2, z−3/2. |
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N-Oxides and their derivatives show a broad spectrum of biological activity, such as antifungal, antibacterial, antimicrobial and antibacterial activities (Lobana & Bhatia, 1989; Symons et al.,1985). These compounds are also found to be involved in DNA strand scission under physiological conditions (Katsuyuki et al.,1991; Bovin et al. 1992). Pyridine N-oxides bearing a sulfur group in position 2 display significant antimicrobial activity (Leonard et al.,1955). In view of the importance of N-oxides, we have previously reported the crystal structures of N-oxide derivatives (Jebas et al., 2005; Ravindran et al., 2008). As an extension of our work on these derivatives, we report here the crystal structure of the title compound (Fig. 1).
The bond lengths and angles agree well with the N-oxide derivatives reported earlier (Jebas et al., 2005; Ravindran et al., 2008). The N–O bond length is in good agreement with the mean value of 1.304 (15) Å reported in the literature for pyridine N–oxides (Allen et al.,1987).
The meistylene ring is planar with the maximum deviation from planarity being -0.036 (1) Å. The dihedral angle formed by the meistylene ring with the oxopyridinium rings (C1–C5/N6) 89.6 (1) °; (C21–C25/N26) 75.5 (1) ° and (C30–C34/N35) 80.69 (1) ° respectively, indicating that all the three oxopyridinium rings are perpendicular to the meistylene ring.
Intramolecular C—H···S hydrogen bonds generate S(6)S(6) ring motifs. The crystal structure is stabilized by intramolecular C—H···S and intermolecular C—H··· O hydrogen bonds and weak C—H···π interactions (Table 1, where Cg1 is the centroid of the ring C10-C15).