organic compounds
2-(3-Benzoyl-4-hydroxy-1,1-dioxo-2H-1λ6,2-benzothiazin-2-yl)-1-phenylethanone
aInstitute of Chemistry, University of the Punjab, Lahore 54590, Pakistan, bDepartment of Chemistry, Government College University, Faisalabad 3800, Pakistan, and cDepartment of Chemistry, The University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada T2N 1N4
*Correspondence e-mail: drhamidlatif@yahoo.com
In the title molecule, C23H17NO5S, the heterocyclic thiazine ring adopts a half-chair conformation, with the S and N atoms displaced by 0.383 (3) and 0.473 (3) Å, respectively, on opposite sides of the mean plane formed by the ring C atoms. The phenyl rings attached to carbonyl groups lie almost parallel to each other at a dihedral angle 7.43 (9)°, the distance between the centroids of the rings being 3.780 (1) Å. The C(thiazine)—C=O and O=C—CH2 groups make dihedral angles of 37.56 (16) and 1.93 (18)°, respectively, with the phenyl groups to which they are attached. The features O—H⋯O and C—H⋯O hydrogen bonds and further consolidated by C—H⋯π interactions; an intramolecular O—H⋯O hydrogen bond is also present.
Related literature
For the biological activity of benzothiazine derivatives, see: Ahmad et al. (2010); Siddiqui et al. (2007). For related structures, see: Siddiqui et al. (2008).
Experimental
Crystal data
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Refinement
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Data collection: COLLECT (Hooft, 1998); cell DENZO (Otwinowski & Minor, 1997); data reduction: SCALEPACK (Otwinowski & Minor, 1997); 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); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536811052615/wn2461sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811052615/wn2461Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536811052615/wn2461Isup3.cml
A mixture of 3-benzoyl-4-hydroxy-2H-1,2-benzothiazine 1,1-dioxide (2.5 g, 8.30 mmol) in acetone (25 ml), aqueous sodium hydroxide (0.67 g, 16.6 mmol) and 2-bromo-1-phenylethanone (1.98 g, 9.96 mmol) was subjected to ultrasonic irradiation for 20 minutes at 318 K followed by addition of HCl (5%) to maintain a pH value of 3.0. Chrome yellow precipitates of the title compound were formed, which were collected and washed with excess distilled water. Crystals suitable for crystallographic study were grown from methanol at room temperature. Yield = 3.1 g, 89.08%; m.p. = 451 - 453 K.
Though all the H atoms could be located in the difference Fourier map the they were included at geometrically idealized positions and refined in the riding-model approximation with the following constraints: O—H = 0.84, C—H = 0.95 and 0.99 Å for Csp2—H and C(methylene)—H, respectively; Uiso(H) = 1.2Ueq(C,O). The final difference map was essentially featurless.
Data collection: COLLECT (Hooft, 1998); cell
DENZO (Otwinowski & Minor, 1997); data reduction: SCALEPACK (Otwinowski & Minor, 1997); 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); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The molecular structure, with displacement ellipsoids plotted at the 30% probability level. Hydrogen atoms are shown as spheres of arbitrary radius. | |
Fig. 2. A unit cell packing diagram of the title compound showing hydrogen bonds and C—H···π-interactions drawn as dashed lines. Hydrogen atoms not involved in H-bonds have been excluded for clarity. |
C23H17NO5S | Z = 2 |
Mr = 419.44 | F(000) = 436 |
Triclinic, P1 | Dx = 1.460 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 7.5458 (2) Å | Cell parameters from 4252 reflections |
b = 10.9169 (4) Å | θ = 1.0–27.5° |
c = 12.0924 (4) Å | µ = 0.21 mm−1 |
α = 101.920 (2)° | T = 173 K |
β = 101.423 (2)° | Block, yellow |
γ = 90.484 (2)° | 0.24 × 0.14 × 0.12 mm |
V = 954.08 (5) Å3 |
Nonius KappaCCD diffractometer | 4362 independent reflections |
Radiation source: fine-focus sealed tube | 3706 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.026 |
ω and ϕ scans | θmax = 27.5°, θmin = 3.0° |
Absorption correction: multi-scan (SORTAV; Blessing, 1997) | h = −9→9 |
Tmin = 0.952, Tmax = 0.976 | k = −14→14 |
8312 measured reflections | l = −15→15 |
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)] = 0.044 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.107 | H-atom parameters constrained |
S = 1.07 | w = 1/[σ2(Fo2) + (0.0313P)2 + 0.6186P] where P = (Fo2 + 2Fc2)/3 |
4362 reflections | (Δ/σ)max < 0.001 |
272 parameters | Δρmax = 0.27 e Å−3 |
0 restraints | Δρmin = −0.37 e Å−3 |
C23H17NO5S | γ = 90.484 (2)° |
Mr = 419.44 | V = 954.08 (5) Å3 |
Triclinic, P1 | Z = 2 |
a = 7.5458 (2) Å | Mo Kα radiation |
b = 10.9169 (4) Å | µ = 0.21 mm−1 |
c = 12.0924 (4) Å | T = 173 K |
α = 101.920 (2)° | 0.24 × 0.14 × 0.12 mm |
β = 101.423 (2)° |
Nonius KappaCCD diffractometer | 4362 independent reflections |
Absorption correction: multi-scan (SORTAV; Blessing, 1997) | 3706 reflections with I > 2σ(I) |
Tmin = 0.952, Tmax = 0.976 | Rint = 0.026 |
8312 measured reflections |
R[F2 > 2σ(F2)] = 0.044 | 0 restraints |
wR(F2) = 0.107 | H-atom parameters constrained |
S = 1.07 | Δρmax = 0.27 e Å−3 |
4362 reflections | Δρmin = −0.37 e Å−3 |
272 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. |
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 | ||
S1 | 0.34149 (7) | −0.18920 (4) | 0.12065 (4) | 0.03505 (13) | |
O1 | 0.1720 (2) | −0.14634 (15) | 0.07084 (12) | 0.0479 (4) | |
O2 | 0.4317 (2) | −0.27840 (14) | 0.05051 (12) | 0.0515 (4) | |
O3 | 0.2650 (2) | 0.04686 (11) | 0.43060 (11) | 0.0393 (3) | |
H3O | 0.1841 | 0.0150 | 0.4561 | 0.047* | |
O4 | 0.03228 (19) | −0.11927 (12) | 0.43691 (12) | 0.0417 (3) | |
O5 | 0.3911 (2) | −0.37516 (13) | 0.44672 (11) | 0.0434 (3) | |
N1 | 0.31001 (19) | −0.24683 (13) | 0.23118 (12) | 0.0282 (3) | |
C1 | 0.4892 (2) | −0.05913 (16) | 0.19162 (15) | 0.0321 (4) | |
C2 | 0.6247 (3) | −0.02094 (19) | 0.14220 (17) | 0.0416 (5) | |
H2 | 0.6424 | −0.0660 | 0.0695 | 0.050* | |
C3 | 0.7341 (3) | 0.0844 (2) | 0.20105 (19) | 0.0490 (5) | |
H3 | 0.8273 | 0.1123 | 0.1682 | 0.059* | |
C4 | 0.7082 (3) | 0.14888 (19) | 0.30697 (18) | 0.0442 (5) | |
H4 | 0.7848 | 0.2205 | 0.3467 | 0.053* | |
C5 | 0.5726 (3) | 0.11088 (16) | 0.35621 (16) | 0.0360 (4) | |
H5 | 0.5553 | 0.1568 | 0.4287 | 0.043* | |
C6 | 0.4613 (2) | 0.00504 (15) | 0.29926 (14) | 0.0289 (4) | |
C7 | 0.3151 (2) | −0.03730 (15) | 0.35027 (14) | 0.0284 (4) | |
C8 | 0.2340 (2) | −0.15732 (15) | 0.31233 (14) | 0.0270 (3) | |
C9 | 0.0816 (2) | −0.19319 (16) | 0.35527 (15) | 0.0299 (4) | |
C10 | −0.0199 (2) | −0.31649 (16) | 0.30855 (15) | 0.0285 (3) | |
C11 | −0.0556 (2) | −0.37228 (18) | 0.19143 (16) | 0.0335 (4) | |
H11 | −0.0137 | −0.3318 | 0.1383 | 0.040* | |
C12 | −0.1522 (2) | −0.48683 (18) | 0.15228 (17) | 0.0383 (4) | |
H12 | −0.1780 | −0.5240 | 0.0722 | 0.046* | |
C13 | −0.2109 (2) | −0.54715 (18) | 0.22929 (18) | 0.0377 (4) | |
H13 | −0.2742 | −0.6267 | 0.2024 | 0.045* | |
C14 | −0.1775 (3) | −0.49171 (18) | 0.34562 (17) | 0.0374 (4) | |
H14 | −0.2192 | −0.5328 | 0.3983 | 0.045* | |
C15 | −0.0836 (2) | −0.37660 (17) | 0.38541 (16) | 0.0326 (4) | |
H15 | −0.0623 | −0.3384 | 0.4652 | 0.039* | |
C16 | 0.4658 (2) | −0.31090 (16) | 0.28640 (17) | 0.0344 (4) | |
H16A | 0.5508 | −0.2488 | 0.3443 | 0.041* | |
H16B | 0.5316 | −0.3537 | 0.2274 | 0.041* | |
C17 | 0.3936 (2) | −0.40619 (16) | 0.34464 (15) | 0.0311 (4) | |
C18 | 0.3239 (2) | −0.53246 (16) | 0.27569 (15) | 0.0284 (4) | |
C19 | 0.3222 (2) | −0.56942 (17) | 0.15799 (16) | 0.0345 (4) | |
H19 | 0.3679 | −0.5131 | 0.1188 | 0.041* | |
C20 | 0.2540 (3) | −0.68798 (19) | 0.09805 (17) | 0.0397 (4) | |
H20 | 0.2531 | −0.7128 | 0.0179 | 0.048* | |
C21 | 0.1876 (3) | −0.76998 (18) | 0.15442 (18) | 0.0414 (5) | |
H21 | 0.1403 | −0.8510 | 0.1129 | 0.050* | |
C22 | 0.1894 (3) | −0.73471 (18) | 0.27146 (18) | 0.0398 (4) | |
H22 | 0.1439 | −0.7915 | 0.3103 | 0.048* | |
C23 | 0.2577 (2) | −0.61663 (17) | 0.33150 (16) | 0.0345 (4) | |
H23 | 0.2594 | −0.5927 | 0.4118 | 0.041* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1 | 0.0427 (3) | 0.0347 (2) | 0.0262 (2) | −0.01221 (19) | 0.01089 (18) | −0.00028 (17) |
O1 | 0.0480 (8) | 0.0589 (9) | 0.0339 (7) | −0.0119 (7) | −0.0025 (6) | 0.0141 (7) |
O2 | 0.0661 (10) | 0.0448 (8) | 0.0429 (8) | −0.0181 (7) | 0.0321 (7) | −0.0112 (6) |
O3 | 0.0554 (9) | 0.0261 (6) | 0.0396 (7) | −0.0039 (6) | 0.0237 (6) | 0.0008 (5) |
O4 | 0.0470 (8) | 0.0337 (7) | 0.0467 (8) | −0.0002 (6) | 0.0265 (6) | −0.0024 (6) |
O5 | 0.0555 (9) | 0.0369 (7) | 0.0334 (7) | 0.0010 (6) | 0.0065 (6) | 0.0000 (6) |
N1 | 0.0310 (7) | 0.0238 (7) | 0.0303 (7) | −0.0026 (6) | 0.0123 (6) | 0.0015 (6) |
C1 | 0.0388 (9) | 0.0280 (9) | 0.0287 (8) | −0.0073 (7) | 0.0077 (7) | 0.0037 (7) |
C2 | 0.0474 (11) | 0.0401 (11) | 0.0390 (10) | −0.0107 (9) | 0.0180 (9) | 0.0043 (8) |
C3 | 0.0497 (12) | 0.0487 (12) | 0.0508 (12) | −0.0194 (10) | 0.0169 (10) | 0.0100 (10) |
C4 | 0.0491 (12) | 0.0352 (10) | 0.0451 (11) | −0.0170 (9) | 0.0047 (9) | 0.0064 (9) |
C5 | 0.0478 (11) | 0.0262 (9) | 0.0319 (9) | −0.0061 (8) | 0.0052 (8) | 0.0045 (7) |
C6 | 0.0361 (9) | 0.0236 (8) | 0.0275 (8) | −0.0019 (7) | 0.0060 (7) | 0.0075 (6) |
C7 | 0.0364 (9) | 0.0241 (8) | 0.0264 (8) | 0.0018 (7) | 0.0094 (7) | 0.0060 (6) |
C8 | 0.0310 (8) | 0.0243 (8) | 0.0265 (8) | 0.0004 (7) | 0.0092 (7) | 0.0043 (6) |
C9 | 0.0316 (9) | 0.0273 (8) | 0.0312 (9) | 0.0030 (7) | 0.0083 (7) | 0.0056 (7) |
C10 | 0.0245 (8) | 0.0272 (8) | 0.0344 (9) | 0.0012 (6) | 0.0086 (7) | 0.0056 (7) |
C11 | 0.0295 (9) | 0.0384 (10) | 0.0326 (9) | −0.0041 (7) | 0.0067 (7) | 0.0072 (7) |
C12 | 0.0328 (9) | 0.0411 (11) | 0.0361 (10) | −0.0051 (8) | 0.0035 (8) | 0.0007 (8) |
C13 | 0.0310 (9) | 0.0298 (9) | 0.0513 (11) | −0.0022 (7) | 0.0082 (8) | 0.0066 (8) |
C14 | 0.0369 (10) | 0.0345 (10) | 0.0460 (11) | −0.0003 (8) | 0.0142 (8) | 0.0151 (8) |
C15 | 0.0316 (9) | 0.0343 (9) | 0.0338 (9) | 0.0009 (7) | 0.0115 (7) | 0.0070 (7) |
C16 | 0.0293 (9) | 0.0271 (9) | 0.0462 (10) | 0.0002 (7) | 0.0117 (8) | 0.0023 (8) |
C17 | 0.0278 (8) | 0.0286 (9) | 0.0347 (9) | 0.0049 (7) | 0.0042 (7) | 0.0042 (7) |
C18 | 0.0264 (8) | 0.0261 (8) | 0.0326 (9) | 0.0031 (6) | 0.0058 (7) | 0.0058 (7) |
C19 | 0.0364 (9) | 0.0333 (9) | 0.0348 (9) | −0.0006 (7) | 0.0105 (8) | 0.0066 (7) |
C20 | 0.0420 (11) | 0.0390 (10) | 0.0340 (10) | 0.0011 (8) | 0.0074 (8) | −0.0010 (8) |
C21 | 0.0365 (10) | 0.0301 (9) | 0.0519 (12) | −0.0016 (8) | 0.0047 (9) | 0.0006 (8) |
C22 | 0.0389 (10) | 0.0318 (10) | 0.0507 (12) | −0.0019 (8) | 0.0084 (9) | 0.0137 (9) |
C23 | 0.0361 (9) | 0.0359 (10) | 0.0332 (9) | 0.0030 (8) | 0.0075 (8) | 0.0109 (8) |
S1—O2 | 1.4249 (15) | C10—C15 | 1.396 (2) |
S1—O1 | 1.4281 (16) | C11—C12 | 1.386 (2) |
S1—N1 | 1.6460 (15) | C11—H11 | 0.9500 |
S1—C1 | 1.7566 (17) | C12—C13 | 1.382 (3) |
O3—C7 | 1.309 (2) | C12—H12 | 0.9500 |
O3—H3O | 0.8400 | C13—C14 | 1.383 (3) |
O4—C9 | 1.259 (2) | C13—H13 | 0.9500 |
O5—C17 | 1.215 (2) | C14—C15 | 1.383 (3) |
N1—C8 | 1.443 (2) | C14—H14 | 0.9500 |
N1—C16 | 1.488 (2) | C15—H15 | 0.9500 |
C1—C2 | 1.384 (2) | C16—C17 | 1.523 (3) |
C1—C6 | 1.401 (2) | C16—H16A | 0.9900 |
C2—C3 | 1.387 (3) | C16—H16B | 0.9900 |
C2—H2 | 0.9500 | C17—C18 | 1.487 (2) |
C3—C4 | 1.379 (3) | C18—C23 | 1.390 (2) |
C3—H3 | 0.9500 | C18—C19 | 1.394 (2) |
C4—C5 | 1.382 (3) | C19—C20 | 1.385 (3) |
C4—H4 | 0.9500 | C19—H19 | 0.9500 |
C5—C6 | 1.393 (2) | C20—C21 | 1.378 (3) |
C5—H5 | 0.9500 | C20—H20 | 0.9500 |
C6—C7 | 1.479 (2) | C21—C22 | 1.385 (3) |
C7—C8 | 1.389 (2) | C21—H21 | 0.9500 |
C8—C9 | 1.434 (2) | C22—C23 | 1.381 (3) |
C9—C10 | 1.488 (2) | C22—H22 | 0.9500 |
C10—C11 | 1.392 (2) | C23—H23 | 0.9500 |
O2—S1—O1 | 119.49 (10) | C12—C11—H11 | 120.0 |
O2—S1—N1 | 108.46 (9) | C10—C11—H11 | 120.0 |
O1—S1—N1 | 107.29 (8) | C13—C12—C11 | 120.28 (18) |
O2—S1—C1 | 110.05 (9) | C13—C12—H12 | 119.9 |
O1—S1—C1 | 109.15 (9) | C11—C12—H12 | 119.9 |
N1—S1—C1 | 100.71 (8) | C12—C13—C14 | 119.98 (17) |
C7—O3—H3O | 109.5 | C12—C13—H13 | 120.0 |
C8—N1—C16 | 113.65 (14) | C14—C13—H13 | 120.0 |
C8—N1—S1 | 111.94 (11) | C13—C14—C15 | 120.22 (17) |
C16—N1—S1 | 115.61 (11) | C13—C14—H14 | 119.9 |
C2—C1—C6 | 121.76 (16) | C15—C14—H14 | 119.9 |
C2—C1—S1 | 121.28 (14) | C14—C15—C10 | 120.14 (17) |
C6—C1—S1 | 116.95 (13) | C14—C15—H15 | 119.9 |
C1—C2—C3 | 118.64 (18) | C10—C15—H15 | 119.9 |
C1—C2—H2 | 120.7 | N1—C16—C17 | 108.46 (14) |
C3—C2—H2 | 120.7 | N1—C16—H16A | 110.0 |
C4—C3—C2 | 120.36 (18) | C17—C16—H16A | 110.0 |
C4—C3—H3 | 119.8 | N1—C16—H16B | 110.0 |
C2—C3—H3 | 119.8 | C17—C16—H16B | 110.0 |
C3—C4—C5 | 120.99 (17) | H16A—C16—H16B | 108.4 |
C3—C4—H4 | 119.5 | O5—C17—C18 | 121.73 (17) |
C5—C4—H4 | 119.5 | O5—C17—C16 | 118.41 (16) |
C4—C5—C6 | 119.86 (17) | C18—C17—C16 | 119.84 (15) |
C4—C5—H5 | 120.1 | C23—C18—C19 | 118.96 (16) |
C6—C5—H5 | 120.1 | C23—C18—C17 | 118.26 (16) |
C5—C6—C1 | 118.39 (16) | C19—C18—C17 | 122.78 (16) |
C5—C6—C7 | 120.79 (16) | C20—C19—C18 | 120.18 (17) |
C1—C6—C7 | 120.81 (15) | C20—C19—H19 | 119.9 |
O3—C7—C8 | 122.77 (15) | C18—C19—H19 | 119.9 |
O3—C7—C6 | 115.46 (14) | C21—C20—C19 | 120.17 (18) |
C8—C7—C6 | 121.75 (15) | C21—C20—H20 | 119.9 |
C7—C8—C9 | 121.00 (15) | C19—C20—H20 | 119.9 |
C7—C8—N1 | 118.45 (14) | C20—C21—C22 | 120.25 (18) |
C9—C8—N1 | 120.52 (14) | C20—C21—H21 | 119.9 |
O4—C9—C8 | 119.42 (15) | C22—C21—H21 | 119.9 |
O4—C9—C10 | 118.06 (15) | C23—C22—C21 | 119.70 (18) |
C8—C9—C10 | 122.51 (15) | C23—C22—H22 | 120.2 |
C11—C10—C15 | 119.30 (16) | C21—C22—H22 | 120.2 |
C11—C10—C9 | 122.38 (16) | C22—C23—C18 | 120.75 (17) |
C15—C10—C9 | 118.31 (15) | C22—C23—H23 | 119.6 |
C12—C11—C10 | 120.05 (17) | C18—C23—H23 | 119.6 |
O2—S1—N1—C8 | 174.71 (11) | S1—N1—C8—C9 | 132.02 (14) |
O1—S1—N1—C8 | −54.93 (13) | C7—C8—C9—O4 | −7.3 (3) |
C1—S1—N1—C8 | 59.18 (13) | N1—C8—C9—O4 | 170.73 (16) |
O2—S1—N1—C16 | 42.43 (14) | C7—C8—C9—C10 | 173.95 (16) |
O1—S1—N1—C16 | 172.79 (12) | N1—C8—C9—C10 | −8.0 (3) |
C1—S1—N1—C16 | −73.10 (13) | O4—C9—C10—C11 | 142.68 (18) |
O2—S1—C1—C2 | 30.8 (2) | C8—C9—C10—C11 | −38.5 (3) |
O1—S1—C1—C2 | −102.15 (18) | O4—C9—C10—C15 | −36.2 (2) |
N1—S1—C1—C2 | 145.15 (17) | C8—C9—C10—C15 | 142.54 (18) |
O2—S1—C1—C6 | −150.24 (15) | C15—C10—C11—C12 | −0.5 (3) |
O1—S1—C1—C6 | 76.79 (16) | C9—C10—C11—C12 | −179.43 (17) |
N1—S1—C1—C6 | −35.90 (16) | C10—C11—C12—C13 | −1.0 (3) |
C6—C1—C2—C3 | −0.6 (3) | C11—C12—C13—C14 | 1.7 (3) |
S1—C1—C2—C3 | 178.33 (17) | C12—C13—C14—C15 | −0.7 (3) |
C1—C2—C3—C4 | 0.4 (3) | C13—C14—C15—C10 | −0.8 (3) |
C2—C3—C4—C5 | −0.5 (4) | C11—C10—C15—C14 | 1.5 (3) |
C3—C4—C5—C6 | 0.8 (3) | C9—C10—C15—C14 | −179.59 (16) |
C4—C5—C6—C1 | −1.0 (3) | C8—N1—C16—C17 | 74.17 (17) |
C4—C5—C6—C7 | −179.94 (18) | S1—N1—C16—C17 | −154.35 (12) |
C2—C1—C6—C5 | 0.9 (3) | N1—C16—C17—O5 | −95.19 (19) |
S1—C1—C6—C5 | −178.09 (14) | N1—C16—C17—C18 | 83.21 (18) |
C2—C1—C6—C7 | 179.81 (18) | O5—C17—C18—C23 | −1.1 (3) |
S1—C1—C6—C7 | 0.9 (2) | C16—C17—C18—C23 | −179.48 (16) |
C5—C6—C7—O3 | 18.8 (2) | O5—C17—C18—C19 | 178.78 (18) |
C1—C6—C7—O3 | −160.17 (17) | C16—C17—C18—C19 | 0.4 (3) |
C5—C6—C7—C8 | −163.06 (17) | C23—C18—C19—C20 | 0.5 (3) |
C1—C6—C7—C8 | 18.0 (3) | C17—C18—C19—C20 | −179.41 (17) |
O3—C7—C8—C9 | 3.8 (3) | C18—C19—C20—C21 | 0.0 (3) |
C6—C7—C8—C9 | −174.28 (16) | C19—C20—C21—C22 | −0.4 (3) |
O3—C7—C8—N1 | −174.30 (16) | C20—C21—C22—C23 | 0.2 (3) |
C6—C7—C8—N1 | 7.7 (2) | C21—C22—C23—C18 | 0.3 (3) |
C16—N1—C8—C7 | 83.33 (19) | C19—C18—C23—C22 | −0.7 (3) |
S1—N1—C8—C7 | −49.91 (19) | C17—C18—C23—C22 | 179.26 (17) |
C16—N1—C8—C9 | −94.73 (18) |
Cg1 is the centroid of the C10–C15 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
O3—H3O···O4i | 0.84 | 2.43 | 3.026 (2) | 129 |
C5—H5···O5ii | 0.95 | 2.52 | 3.311 (2) | 140 |
C22—H22···O3iii | 0.95 | 2.57 | 3.346 (2) | 139 |
O3—H3O···O4 | 0.84 | 1.80 | 2.537 (2) | 146 |
C16—H16B···Cg1iv | 0.99 | 2.78 | 3.455 (2) | 126 |
Symmetry codes: (i) −x, −y, −z+1; (ii) −x+1, −y, −z+1; (iii) x, y−1, z; (iv) x+1, y, z. |
Experimental details
Crystal data | |
Chemical formula | C23H17NO5S |
Mr | 419.44 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 173 |
a, b, c (Å) | 7.5458 (2), 10.9169 (4), 12.0924 (4) |
α, β, γ (°) | 101.920 (2), 101.423 (2), 90.484 (2) |
V (Å3) | 954.08 (5) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.21 |
Crystal size (mm) | 0.24 × 0.14 × 0.12 |
Data collection | |
Diffractometer | Nonius KappaCCD diffractometer |
Absorption correction | Multi-scan (SORTAV; Blessing, 1997) |
Tmin, Tmax | 0.952, 0.976 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 8312, 4362, 3706 |
Rint | 0.026 |
(sin θ/λ)max (Å−1) | 0.651 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.044, 0.107, 1.07 |
No. of reflections | 4362 |
No. of parameters | 272 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.27, −0.37 |
Computer programs: COLLECT (Hooft, 1998), DENZO (Otwinowski & Minor, 1997), SCALEPACK (Otwinowski & Minor, 1997), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997).
Cg1 is the centroid of the C10–C15 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
O3—H3O···O4i | 0.84 | 2.43 | 3.026 (2) | 129 |
C5—H5···O5ii | 0.95 | 2.52 | 3.311 (2) | 140 |
C22—H22···O3iii | 0.95 | 2.57 | 3.346 (2) | 139 |
O3—H3O···O4 | 0.84 | 1.80 | 2.537 (2) | 146 |
C16—H16B···Cg1iv | 0.99 | 2.78 | 3.455 (2) | 126 |
Symmetry codes: (i) −x, −y, −z+1; (ii) −x+1, −y, −z+1; (iii) x, y−1, z; (iv) x+1, y, z. |
Acknowledgements
HLS is grateful to the Institute of Chemistry, University of the Punjab, Lahore, Pakistan, for financial support.
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.
In continuation of our research on the synthesis of biologically active benzothiazine derivatives (Siddiqui et al., 2007 and Ahmad et al., 2010), we now report the synthesis and crystal structure of the title compound.
The bond distances and angles in the title compound (Fig. 1) agree very well with the corresponding bond distances and angles reported in closely related compounds (Siddiqui et al., 2008). The heterocyclic thiazine ring adopts a half-chair conformation with atoms S1 and N1 displaced by 0.383 (3) and 0.473 (3) Å, respectively, on opposite sides of the mean plane formed by the ring C atoms. The phenyl rings C10–C15 and C18–C23 lie almost parallel to each other, at a dihedral angle of 7.43 (9)°, the distance between the centroids of the rings being 3.780 (1) Å. The O4/C9/C8 and O5/C17/C16 groups are oriented at 37.56 (16) and 1.93 (18)°, respectively, with the phenyl rings to which they are bonded.
The crystal structure is stabilized by intermolecular O—H···O and C—H···O hydrogen bonds and further consolidated by C—H···π-interactions (Fig. 2); an intramolecular O—H···O hydrogen bond is also present (Table 1).