organic compounds
2-(4-Chlorophenyl)-3,5-dimethyl-1λ6,2-thiazine-1,1-dione
aDepartment of Chemistry,University of Salahaddin-Erbil, KurdistanIraq, and bDepartment of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
*Correspondence e-mail: khaledi@siswa.um.edu.my
In the title compound, C12H12ClNO2S, the S atom is displaced by 0.708 (2) Å out of the plane through the remaining atoms of the thiazine ring (r.m.s. deviation = 0.0823 Å). This plane makes a dihedral angle of 89.33 (7)° with the phenyl ring. In the crystal, adjacent molecules are connected through C—H⋯O hydrogen bonds into layers parallel to the bc plane.
Related literature
For the structure of the 4-methoxyphenyl analogue, see: Fanghanel et al. (1998). For some reactions of and see: Imam Ismail (1990).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2007); cell SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Barbour, 2001); software used to prepare material for publication: SHELXL97 and publCIF (Westrip, 2010).
Supporting information
https://doi.org/10.1107/S1600536811038852/vm2124sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811038852/vm2124Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536811038852/vm2124Isup3.cml
A mixture of 4,6-dimethyl-2,2-dioxo-1,2-oxathiine (1.6 g, 0.01 mol) and p-chloroaniline (1.28 g, 0.01 mol) in a conical flask was heated at 150°C for an hour. The content was cooled to room temperature and then washed with an aqueous solution (10 ml) of HCl (0.1 N). The white solid was collected, washed with water and dried over silica-gel. The X-ray quality crystals were obtained from a methanol solution at room temperature.
Hydrogen atoms were placed at calculated positions at distances H—Csp2 = 0.95 Å and H—Cmethyl= 0.98 Å and were treated as riding on their parent atoms, with Uiso(H) = 1.2 (1.5 for methyl)Ueq(C).
Sultones are cyclic sulfonate
of hydroxy and may be saturated or unsaturated. It is well known that the reaction of unsaturated with primary forms the corresponding a cyclic sulfonamide in which the S—N bond is part of the ring (Imam Ismail, 1990). The title sultam compound was obtained through the reaction of the sultone, 4,6-dimethyl-2,2-dioxo-1,2-oxathiine, with p-chloroaniline. Similar to what was observed in the structure of the 4-methoxyphenyl analogue (Fanghanel et al., 1998), the thiazine ring adopts a half-chair conformation with the S atom displaced by 0.708 (2) Å from the plane passing through the remaining five atoms of the ring, C2,C3,C4,C6 and N1. This plane and the phenyl ring make a dihedral angle of 89.33 (7)°. In the crystal, intermolecular C—H···O hydrogen bonds connect the molecules to form a two-dimensional network parallel to the bc plane (Table 1).For the structure of the 4-methoxyphenyl analogue, see: Fanghanel et al. (1998). For some reactions of
and see: Imam Ismail (1990).Data collection: APEX2 (Bruker, 2007); cell
SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: X-SEED (Barbour, 2001); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008) and publCIF (Westrip, 2010).Fig. 1. Molecular structure of the title compound with thermal ellipsoids at the 50% probability level. Hydrogen atoms are drawn as spheres of arbitrary radius. |
C12H12ClNO2S | F(000) = 560 |
Mr = 269.74 | Dx = 1.409 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 4756 reflections |
a = 11.2237 (1) Å | θ = 2.7–30.5° |
b = 15.1606 (2) Å | µ = 0.45 mm−1 |
c = 7.8752 (1) Å | T = 100 K |
β = 108.4503 (8)° | Block, colorless |
V = 1271.15 (3) Å3 | 0.28 × 0.24 × 0.19 mm |
Z = 4 |
Bruker APEXII CCD diffractometer | 2768 independent reflections |
Radiation source: fine-focus sealed tube | 2447 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.027 |
φ and ω scans | θmax = 27.0°, θmin = 2.3° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −14→14 |
Tmin = 0.884, Tmax = 0.919 | k = −19→19 |
11365 measured reflections | l = −10→10 |
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)] = 0.030 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.080 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0375P)2 + 0.7004P] where P = (Fo2 + 2Fc2)/3 |
2768 reflections | (Δ/σ)max = 0.001 |
156 parameters | Δρmax = 0.38 e Å−3 |
0 restraints | Δρmin = −0.43 e Å−3 |
C12H12ClNO2S | V = 1271.15 (3) Å3 |
Mr = 269.74 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 11.2237 (1) Å | µ = 0.45 mm−1 |
b = 15.1606 (2) Å | T = 100 K |
c = 7.8752 (1) Å | 0.28 × 0.24 × 0.19 mm |
β = 108.4503 (8)° |
Bruker APEXII CCD diffractometer | 2768 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2447 reflections with I > 2σ(I) |
Tmin = 0.884, Tmax = 0.919 | Rint = 0.027 |
11365 measured reflections |
R[F2 > 2σ(F2)] = 0.030 | 0 restraints |
wR(F2) = 0.080 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.38 e Å−3 |
2768 reflections | Δρmin = −0.43 e Å−3 |
156 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 | ||
Cl1 | 1.15452 (4) | 0.78261 (3) | 0.78766 (6) | 0.03679 (13) | |
S1 | 0.67185 (3) | 0.54702 (2) | 0.90462 (5) | 0.01583 (10) | |
O1 | 0.57169 (10) | 0.60996 (7) | 0.84129 (15) | 0.0224 (2) | |
O2 | 0.76889 (10) | 0.56910 (7) | 1.06785 (14) | 0.0236 (2) | |
N1 | 0.73994 (11) | 0.53279 (8) | 0.74623 (16) | 0.0169 (3) | |
C1 | 0.72390 (16) | 0.49244 (12) | 0.4367 (2) | 0.0266 (4) | |
H1A | 0.6744 | 0.4541 | 0.3397 | 0.040* | |
H1B | 0.8133 | 0.4784 | 0.4645 | 0.040* | |
H1C | 0.7095 | 0.5542 | 0.3992 | 0.040* | |
C2 | 0.68489 (13) | 0.47796 (10) | 0.59948 (19) | 0.0180 (3) | |
C3 | 0.60397 (14) | 0.41358 (10) | 0.6087 (2) | 0.0195 (3) | |
H3 | 0.5626 | 0.3814 | 0.5029 | 0.023* | |
C4 | 0.57720 (13) | 0.39124 (9) | 0.7697 (2) | 0.0181 (3) | |
C5 | 0.51384 (16) | 0.30477 (10) | 0.7770 (2) | 0.0264 (3) | |
H5A | 0.4946 | 0.3006 | 0.8898 | 0.040* | |
H5B | 0.5697 | 0.2563 | 0.7697 | 0.040* | |
H5C | 0.4358 | 0.3010 | 0.6763 | 0.040* | |
C6 | 0.61295 (13) | 0.44386 (9) | 0.9154 (2) | 0.0171 (3) | |
H6 | 0.6053 | 0.4233 | 1.0254 | 0.021* | |
C7 | 0.84013 (13) | 0.59335 (10) | 0.75099 (19) | 0.0173 (3) | |
C8 | 0.81380 (15) | 0.68225 (10) | 0.7151 (2) | 0.0233 (3) | |
H8 | 0.7297 | 0.7028 | 0.6841 | 0.028* | |
C9 | 0.91055 (15) | 0.74081 (11) | 0.7247 (2) | 0.0270 (4) | |
H9 | 0.8936 | 0.8017 | 0.7006 | 0.032* | |
C10 | 1.03192 (15) | 0.70909 (11) | 0.7698 (2) | 0.0243 (3) | |
C11 | 1.05906 (14) | 0.62056 (11) | 0.8042 (2) | 0.0237 (3) | |
H11 | 1.1431 | 0.6000 | 0.8337 | 0.028* | |
C12 | 0.96219 (14) | 0.56223 (10) | 0.7952 (2) | 0.0202 (3) | |
H12 | 0.9794 | 0.5013 | 0.8191 | 0.024* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0280 (2) | 0.0363 (2) | 0.0456 (3) | −0.01448 (18) | 0.01096 (19) | 0.00453 (19) |
S1 | 0.01745 (18) | 0.01486 (18) | 0.01607 (18) | −0.00151 (13) | 0.00658 (14) | −0.00116 (13) |
O1 | 0.0240 (6) | 0.0180 (5) | 0.0280 (6) | 0.0041 (4) | 0.0121 (5) | 0.0018 (4) |
O2 | 0.0258 (6) | 0.0265 (6) | 0.0175 (5) | −0.0090 (5) | 0.0051 (5) | −0.0038 (4) |
N1 | 0.0166 (6) | 0.0177 (6) | 0.0175 (6) | −0.0017 (5) | 0.0071 (5) | −0.0011 (5) |
C1 | 0.0287 (8) | 0.0336 (9) | 0.0188 (8) | −0.0013 (7) | 0.0094 (7) | −0.0017 (6) |
C2 | 0.0170 (7) | 0.0204 (7) | 0.0157 (7) | 0.0049 (6) | 0.0038 (6) | 0.0001 (6) |
C3 | 0.0188 (7) | 0.0191 (7) | 0.0184 (7) | 0.0016 (6) | 0.0028 (6) | −0.0035 (6) |
C4 | 0.0151 (7) | 0.0156 (7) | 0.0224 (7) | 0.0017 (5) | 0.0045 (6) | 0.0007 (6) |
C5 | 0.0303 (8) | 0.0179 (7) | 0.0306 (8) | −0.0065 (7) | 0.0093 (7) | −0.0030 (6) |
C6 | 0.0172 (7) | 0.0154 (7) | 0.0196 (7) | −0.0010 (5) | 0.0070 (6) | 0.0022 (5) |
C7 | 0.0164 (7) | 0.0201 (7) | 0.0163 (7) | −0.0009 (6) | 0.0062 (5) | 0.0019 (5) |
C8 | 0.0181 (7) | 0.0217 (8) | 0.0298 (8) | 0.0025 (6) | 0.0070 (6) | 0.0053 (6) |
C9 | 0.0271 (8) | 0.0193 (8) | 0.0349 (9) | 0.0000 (7) | 0.0103 (7) | 0.0063 (7) |
C10 | 0.0204 (8) | 0.0278 (8) | 0.0249 (8) | −0.0079 (6) | 0.0077 (6) | 0.0028 (6) |
C11 | 0.0164 (7) | 0.0296 (8) | 0.0252 (8) | 0.0021 (6) | 0.0069 (6) | 0.0048 (6) |
C12 | 0.0206 (7) | 0.0206 (7) | 0.0199 (7) | 0.0019 (6) | 0.0072 (6) | 0.0034 (6) |
Cl1—C10 | 1.7416 (16) | C4—C5 | 1.501 (2) |
S1—O2 | 1.4369 (11) | C5—H5A | 0.9800 |
S1—O1 | 1.4382 (11) | C5—H5B | 0.9800 |
S1—N1 | 1.6703 (12) | C5—H5C | 0.9800 |
S1—C6 | 1.7104 (14) | C6—H6 | 0.9500 |
N1—C2 | 1.3987 (19) | C7—C12 | 1.385 (2) |
N1—C7 | 1.4430 (18) | C7—C8 | 1.390 (2) |
C1—C2 | 1.496 (2) | C8—C9 | 1.386 (2) |
C1—H1A | 0.9800 | C8—H8 | 0.9500 |
C1—H1B | 0.9800 | C9—C10 | 1.381 (2) |
C1—H1C | 0.9800 | C9—H9 | 0.9500 |
C2—C3 | 1.351 (2) | C10—C11 | 1.384 (2) |
C3—C4 | 1.433 (2) | C11—C12 | 1.386 (2) |
C3—H3 | 0.9500 | C11—H11 | 0.9500 |
C4—C6 | 1.350 (2) | C12—H12 | 0.9500 |
O2—S1—O1 | 116.33 (7) | H5A—C5—H5B | 109.5 |
O2—S1—N1 | 107.56 (6) | C4—C5—H5C | 109.5 |
O1—S1—N1 | 108.60 (6) | H5A—C5—H5C | 109.5 |
O2—S1—C6 | 111.35 (7) | H5B—C5—H5C | 109.5 |
O1—S1—C6 | 110.61 (7) | C4—C6—S1 | 120.91 (12) |
N1—S1—C6 | 101.21 (7) | C4—C6—H6 | 119.5 |
C2—N1—C7 | 122.44 (12) | S1—C6—H6 | 119.5 |
C2—N1—S1 | 120.46 (10) | C12—C7—C8 | 120.75 (14) |
C7—N1—S1 | 115.81 (10) | C12—C7—N1 | 119.36 (13) |
C2—C1—H1A | 109.5 | C8—C7—N1 | 119.87 (13) |
C2—C1—H1B | 109.5 | C9—C8—C7 | 119.85 (14) |
H1A—C1—H1B | 109.5 | C9—C8—H8 | 120.1 |
C2—C1—H1C | 109.5 | C7—C8—H8 | 120.1 |
H1A—C1—H1C | 109.5 | C10—C9—C8 | 118.88 (15) |
H1B—C1—H1C | 109.5 | C10—C9—H9 | 120.6 |
C3—C2—N1 | 120.91 (13) | C8—C9—H9 | 120.6 |
C3—C2—C1 | 122.43 (14) | C9—C10—C11 | 121.75 (15) |
N1—C2—C1 | 116.63 (13) | C9—C10—Cl1 | 119.19 (13) |
C2—C3—C4 | 123.45 (14) | C11—C10—Cl1 | 119.05 (12) |
C2—C3—H3 | 118.3 | C10—C11—C12 | 119.23 (14) |
C4—C3—H3 | 118.3 | C10—C11—H11 | 120.4 |
C6—C4—C3 | 121.54 (13) | C12—C11—H11 | 120.4 |
C6—C4—C5 | 120.04 (14) | C7—C12—C11 | 119.54 (14) |
C3—C4—C5 | 118.34 (13) | C7—C12—H12 | 120.2 |
C4—C5—H5A | 109.5 | C11—C12—H12 | 120.2 |
C4—C5—H5B | 109.5 |
D—H···A | D—H | H···A | D···A | D—H···A |
C6—H6···O1i | 0.95 | 2.57 | 3.3384 (18) | 138 |
C9—H9···O2ii | 0.95 | 2.44 | 3.3339 (19) | 156 |
Symmetry codes: (i) −x+1, −y+1, −z+2; (ii) x, −y+3/2, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | C12H12ClNO2S |
Mr | 269.74 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 100 |
a, b, c (Å) | 11.2237 (1), 15.1606 (2), 7.8752 (1) |
β (°) | 108.4503 (8) |
V (Å3) | 1271.15 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.45 |
Crystal size (mm) | 0.28 × 0.24 × 0.19 |
Data collection | |
Diffractometer | Bruker APEXII CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.884, 0.919 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11365, 2768, 2447 |
Rint | 0.027 |
(sin θ/λ)max (Å−1) | 0.639 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.030, 0.080, 1.04 |
No. of reflections | 2768 |
No. of parameters | 156 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.38, −0.43 |
Computer programs: APEX2 (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), X-SEED (Barbour, 2001), SHELXL97 (Sheldrick, 2008) and publCIF (Westrip, 2010).
D—H···A | D—H | H···A | D···A | D—H···A |
C6—H6···O1i | 0.95 | 2.57 | 3.3384 (18) | 137.8 |
C9—H9···O2ii | 0.95 | 2.44 | 3.3339 (19) | 156.4 |
Symmetry codes: (i) −x+1, −y+1, −z+2; (ii) x, −y+3/2, z−1/2. |
Acknowledgements
Financial support form the University of Malaya is highly appreciated (PPP grant No. PS359/2009 C).
References
Barbour, L. J. (2001). J. Supramol. Chem. 1, 189–191. CrossRef CAS Google Scholar
Bruker (2007). APEX2 and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Fanghanel, E., Bartossek, H., Baumeister, U., Biedermann, M. & Hartung, H. (1998). J. Heterocycl. Chem. 35, 1449–1454. CAS Google Scholar
Imam Ismail, I. (1990). Arch. Pharm. Res. 13, 1–4. Google Scholar
Sheldrick, G. M. (1996). SADABS. University of Göttingen, Germany. Google Scholar
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Sultones are cyclic sulfonate esters of hydroxy sulfonic acids and may be saturated or unsaturated. It is well known that the reaction of unsaturated sultones with primary amines forms the corresponding sultams, a cyclic sulfonamide in which the S—N bond is part of the ring (Imam Ismail, 1990). The title sultam compound was obtained through the reaction of the sultone, 4,6-dimethyl-2,2-dioxo-1,2-oxathiine, with p-chloroaniline. Similar to what was observed in the structure of the 4-methoxyphenyl analogue (Fanghanel et al., 1998), the thiazine ring adopts a half-chair conformation with the S atom displaced by 0.708 (2) Å from the plane passing through the remaining five atoms of the ring, C2,C3,C4,C6 and N1. This plane and the phenyl ring make a dihedral angle of 89.33 (7)°. In the crystal, intermolecular C—H···O hydrogen bonds connect the molecules to form a two-dimensional network parallel to the bc plane (Table 1).