organic compounds
2,4,6-Tris(1-oxo-2-pyridylsulfanylmethyl)mesitylene methanol solvate
aDepartment of Chemistry, Popes College, Sawyerpuram 628 251, Tamil Nadu, India, bDepartment of Physics, Karunya University, Karunya Nagar, Coimbatore 641 114, India, and cInstitut für Organische Chemie, Universität Mainz, Duesbergweg 10-14, 55099 Mainz, Germany
*Correspondence e-mail: b_ravidurai@yahoo.com
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 is stabilized by intramolecular C—H⋯S and intermolecular C—H⋯O hydrogen bonds and weak C—H⋯π interactions.
Related literature
For related literature on the biological activity of N-oxides see: Lobana et al., (1989); Symons & West (1985); Katsuyuki et al. (1991); Bovin et al. (1992); Leonard et al.(1955). For related literature on N-oxides, see: Jebas et al. (2005); Ravindran et al. (2008). For bond-length data, see: Allen et al. (1987); Jebas et al. (2005); Ravindran et al. (2008). For hydrogen-bond motifs, see: Bernstein et al. (1995).
Experimental
Crystal data
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Refinement
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Data collection: CAD-4 Software (Enraf–Nonius, 1989); cell CAD-4 Software; data reduction: CAD-4 Software; 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.
Supporting information
10.1107/S1600536808013081/at2565sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808013081/at2565Isup2.hkl
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
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 | F(000) = 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 = 61–69° |
b = 14.9129 (8) Å | µ = 2.78 mm−1 |
c = 15.467 (2) Å | T = 298 K |
β = 91.733 (7)° | Block, colourless |
V = 2758.4 (6) Å3 | 0.52 × 0.42 × 0.06 mm |
Z = 4 |
Enraf–Nonius CAD-4 diffractometer | 4156 reflections with I > 2σ(I) |
Radiation source: rotating anode | Rint = 0 |
Graphite monochromator | θmax = 69.9°, θmin = 3.7° |
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 every 60 min |
5226 independent reflections | intensity decay: 3% |
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 |
C27H27N3O3S3·CH4O | V = 2758.4 (6) Å3 |
Mr = 569.74 | Z = 4 |
Monoclinic, P21/c | Cu Kα radiation |
a = 11.9644 (17) Å | µ = 2.78 mm−1 |
b = 14.9129 (8) Å | T = 298 K |
c = 15.467 (2) Å | 0.52 × 0.42 × 0.06 mm |
β = 91.733 (7)° |
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 every 60 min |
5226 measured reflections | intensity decay: 3% |
5226 independent reflections |
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. |
Experimental details
Crystal data | |
Chemical formula | C27H27N3O3S3·CH4O |
Mr | 569.74 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 298 |
a, b, c (Å) | 11.9644 (17), 14.9129 (8), 15.467 (2) |
β (°) | 91.733 (7) |
V (Å3) | 2758.4 (6) |
Z | 4 |
Radiation type | Cu Kα |
µ (mm−1) | 2.78 |
Crystal size (mm) | 0.52 × 0.42 × 0.06 |
Data collection | |
Diffractometer | Enraf–Nonius CAD-4 diffractometer |
Absorption correction | ψ scan (North et al., 1968) |
Tmin, Tmax | 0.296, 0.842 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5226, 5226, 4156 |
Rint | 0 |
(sin θ/λ)max (Å−1) | 0.609 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.051, 0.150, 1.09 |
No. of reflections | 5226 |
No. of parameters | 347 |
No. of restraints | 12 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.49, −0.32 |
Computer programs: CAD-4 Software (Enraf–Nonius, 1989), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O1L—H1L···O27 | 0.82 | 2.41 | 2.804 (7) | 110.4 |
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. |
Acknowledgements
BRDN thanks the University Grants Commission, India, for a Teacher Fellowship.
References
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
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).