organic compounds
2-[(3-Bromoanilino)methyl]-1,2-benzothiazol-3(2H)-one
aInstitute of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650093, People's Republic of China, bInstitute of Materials and Chemical Engineering, Hainan University, Haikou 570228, People's Republic of China, and cCollege of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571100, People's Republic of China
*Correspondence e-mail: linqianggroup@163.com_yangjxmail@sohu.com
The title compound, C14H11BrN2OS, was synthesized by the reaction of 1,2-benzothiazol-3(2H)-one with formalin and 3-bromoaniline in ethanol. The 1,2-benzothiazolone ring system is approximately planar [maximum deviation = 0.0142 (s.u.?) Å] and forms a dihedral angle of 79.19 (5)° with the benzene ring. In the crystal, molecules are linked by N—H⋯O, C—H⋯O and C—H⋯Br interactions.
Related literature
For background to the synthesis of benzoisothiazolone derivatives, see: Davis (1972); Elgazwy & Abdel-Sattar (2003). For the biological activity of 1,2-benzoisothiazolone derivatives, see: Taubert et al. (2002). For structural studies of related alkyl 3-oxo-2,3-dihydro-1,2-benzothiazole-2-carboxylate derivatives, see: Wang et al. (2011); Wang, Yang et al. (2011a,b)
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku, 2008); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999); software used to prepare material for publication: SHELXTL and publCIF (Westrip, 2010).
Supporting information
10.1107/S1600536812012263/rz2723sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536812012263/rz2723Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536812012263/rz2723Isup3.cml
An ethanol solution (20 ml) containing 1,2-benzothiazol-3(2H)-one (1.51 g, 0.01 mol), formalin (1 mL) and 3-bromoaniline (1.72 g, 0.01 mol) was stirred at room temperature for 4.5 h to afford the title compound (1.97 g, yield 58.8%). Single crystals suitable for X-ray measurements were obtained by recrystallization of the title compound from trichloromethane/methanol (1:1 v/v) at room temperature.
The amine H atom was located in a difference Fourier map and refined freely. All other H atoms were placed at calculated positions and refined in riding mode, with C—H = 0.95–0.99 Å. The Uiso(H) values were constrained to be 1.5Ueq(C) for the methyl H atoms or 1.2Ueq(C) for the remaining H atoms.
Data collection: CrystalClear (Rigaku, 2008); cell
CrystalClear (Rigaku, 2008); data reduction: CrystalClear (Rigaku, 2008); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and publCIF (Westrip, 2010).C14H11BrN2OS | F(000) = 672 |
Mr = 335.22 | Dx = 1.649 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 4184 reflections |
a = 7.351 (2) Å | θ = 2.7–29.1° |
b = 22.781 (7) Å | µ = 3.19 mm−1 |
c = 8.559 (3) Å | T = 153 K |
β = 109.580 (4)° | Block, colourless |
V = 1350.5 (7) Å3 | 0.38 × 0.37 × 0.31 mm |
Z = 4 |
Rigaku AFC10/Saturn724+ diffractometer | 3587 independent reflections |
Radiation source: Rotating Anode | 2709 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.037 |
Detector resolution: 28.5714 pixels mm-1 | θmax = 29.1°, θmin = 2.7° |
phi and ω scans | h = −10→9 |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | k = −31→30 |
Tmin = 0.374, Tmax = 0.436 | l = −11→11 |
11631 measured reflections |
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)] = 0.032 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.069 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0289P)2 + 0.160P] where P = (Fo2 + 2Fc2)/3 |
3587 reflections | (Δ/σ)max < 0.001 |
176 parameters | Δρmax = 0.44 e Å−3 |
0 restraints | Δρmin = −0.52 e Å−3 |
C14H11BrN2OS | V = 1350.5 (7) Å3 |
Mr = 335.22 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 7.351 (2) Å | µ = 3.19 mm−1 |
b = 22.781 (7) Å | T = 153 K |
c = 8.559 (3) Å | 0.38 × 0.37 × 0.31 mm |
β = 109.580 (4)° |
Rigaku AFC10/Saturn724+ diffractometer | 3587 independent reflections |
Absorption correction: multi-scan (ABSCOR; Higashi, 1995) | 2709 reflections with I > 2σ(I) |
Tmin = 0.374, Tmax = 0.436 | Rint = 0.037 |
11631 measured reflections |
R[F2 > 2σ(F2)] = 0.032 | 0 restraints |
wR(F2) = 0.069 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | Δρmax = 0.44 e Å−3 |
3587 reflections | Δρmin = −0.52 e Å−3 |
176 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 | ||
Br1 | 0.37553 (3) | 0.693276 (11) | 0.83530 (3) | 0.03101 (8) | |
O1 | 1.1959 (2) | 0.47887 (6) | 1.16801 (16) | 0.0223 (3) | |
S1 | 1.30876 (8) | 0.60263 (2) | 1.48237 (6) | 0.02068 (12) | |
N1 | 1.2660 (2) | 0.56804 (7) | 1.29651 (19) | 0.0181 (4) | |
C13 | 0.6410 (3) | 0.69583 (9) | 0.9710 (3) | 0.0220 (4) | |
C7 | 1.2302 (3) | 0.50892 (9) | 1.2939 (2) | 0.0174 (4) | |
N2 | 1.0771 (2) | 0.60956 (8) | 1.0275 (2) | 0.0184 (4) | |
C5 | 1.2107 (3) | 0.43397 (10) | 1.5099 (3) | 0.0218 (4) | |
H5 | 1.1821 | 0.4025 | 1.4327 | 0.026* | |
C3 | 1.2648 (3) | 0.47107 (10) | 1.7852 (3) | 0.0253 (5) | |
H3 | 1.2716 | 0.4638 | 1.8963 | 0.030* | |
C1 | 1.2822 (3) | 0.53648 (9) | 1.5741 (2) | 0.0181 (4) | |
C9 | 0.9559 (3) | 0.65290 (9) | 1.0506 (2) | 0.0172 (4) | |
C10 | 1.0203 (3) | 0.69745 (9) | 1.1676 (3) | 0.0261 (5) | |
H10 | 1.1519 | 0.6985 | 1.2368 | 0.031* | |
C14 | 0.7614 (3) | 0.65249 (9) | 0.9498 (2) | 0.0182 (4) | |
H14 | 0.7134 | 0.6229 | 0.8682 | 0.022* | |
C6 | 1.2401 (3) | 0.49047 (9) | 1.4604 (2) | 0.0168 (4) | |
C8 | 1.2648 (3) | 0.59860 (9) | 1.1440 (2) | 0.0184 (4) | |
H8A | 1.3328 | 0.6366 | 1.1755 | 0.022* | |
H8B | 1.3384 | 0.5747 | 1.0891 | 0.022* | |
C2 | 1.2955 (3) | 0.52715 (10) | 1.7396 (3) | 0.0237 (5) | |
H2 | 1.3246 | 0.5584 | 1.8174 | 0.028* | |
C4 | 1.2239 (3) | 0.42447 (10) | 1.6723 (3) | 0.0259 (5) | |
H4 | 1.2051 | 0.3861 | 1.7078 | 0.031* | |
C12 | 0.7015 (3) | 0.74034 (11) | 1.0860 (3) | 0.0324 (5) | |
H12 | 0.6149 | 0.7697 | 1.0973 | 0.039* | |
C11 | 0.8935 (4) | 0.74030 (11) | 1.1840 (3) | 0.0349 (6) | |
H11 | 0.9402 | 0.7703 | 1.2645 | 0.042* | |
H2N | 1.017 (3) | 0.5816 (10) | 0.975 (3) | 0.023 (6)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Br1 | 0.02204 (12) | 0.03134 (14) | 0.03771 (15) | 0.00613 (10) | 0.00744 (9) | 0.00158 (11) |
O1 | 0.0263 (8) | 0.0235 (8) | 0.0165 (8) | −0.0016 (7) | 0.0064 (6) | −0.0054 (6) |
S1 | 0.0272 (3) | 0.0200 (3) | 0.0155 (3) | −0.0026 (2) | 0.0080 (2) | −0.0035 (2) |
N1 | 0.0253 (9) | 0.0177 (9) | 0.0124 (9) | −0.0007 (7) | 0.0076 (7) | −0.0009 (7) |
C13 | 0.0227 (10) | 0.0203 (11) | 0.0235 (12) | 0.0014 (9) | 0.0083 (9) | 0.0035 (9) |
C7 | 0.0150 (9) | 0.0194 (11) | 0.0166 (11) | 0.0010 (8) | 0.0038 (8) | −0.0013 (8) |
N2 | 0.0189 (9) | 0.0179 (9) | 0.0162 (9) | 0.0000 (7) | 0.0029 (7) | −0.0024 (7) |
C5 | 0.0182 (10) | 0.0234 (11) | 0.0229 (12) | 0.0000 (9) | 0.0059 (8) | 0.0005 (9) |
C3 | 0.0220 (11) | 0.0365 (13) | 0.0191 (12) | 0.0016 (10) | 0.0092 (9) | 0.0068 (10) |
C1 | 0.0137 (9) | 0.0231 (11) | 0.0178 (11) | −0.0009 (8) | 0.0054 (8) | 0.0001 (8) |
C9 | 0.0207 (10) | 0.0151 (10) | 0.0164 (10) | 0.0000 (8) | 0.0071 (8) | 0.0024 (8) |
C10 | 0.0239 (11) | 0.0211 (11) | 0.0289 (13) | −0.0026 (10) | 0.0032 (9) | −0.0066 (9) |
C14 | 0.0228 (11) | 0.0176 (10) | 0.0150 (11) | −0.0001 (8) | 0.0073 (8) | 0.0006 (8) |
C6 | 0.0128 (9) | 0.0212 (10) | 0.0155 (10) | 0.0019 (8) | 0.0038 (7) | 0.0014 (8) |
C8 | 0.0208 (10) | 0.0215 (11) | 0.0154 (10) | −0.0010 (9) | 0.0095 (8) | 0.0005 (8) |
C2 | 0.0229 (11) | 0.0314 (13) | 0.0177 (11) | 0.0002 (9) | 0.0079 (9) | −0.0016 (9) |
C4 | 0.0232 (11) | 0.0277 (12) | 0.0279 (13) | 0.0004 (10) | 0.0098 (9) | 0.0081 (10) |
C12 | 0.0337 (13) | 0.0256 (12) | 0.0389 (14) | 0.0061 (11) | 0.0134 (11) | −0.0091 (11) |
C11 | 0.0392 (14) | 0.0251 (13) | 0.0382 (14) | −0.0003 (11) | 0.0100 (11) | −0.0165 (11) |
Br1—C13 | 1.908 (2) | C3—C4 | 1.398 (3) |
O1—C7 | 1.229 (2) | C3—H3 | 0.9500 |
S1—N1 | 1.7074 (17) | C1—C6 | 1.393 (3) |
S1—C1 | 1.740 (2) | C1—C2 | 1.403 (3) |
N1—C7 | 1.371 (3) | C9—C10 | 1.393 (3) |
N1—C8 | 1.476 (2) | C9—C14 | 1.401 (3) |
C13—C14 | 1.378 (3) | C10—C11 | 1.389 (3) |
C13—C12 | 1.379 (3) | C10—H10 | 0.9500 |
C7—C6 | 1.464 (3) | C14—H14 | 0.9500 |
N2—C9 | 1.388 (3) | C8—H8A | 0.9900 |
N2—C8 | 1.427 (2) | C8—H8B | 0.9900 |
N2—H2N | 0.82 (2) | C2—H2 | 0.9500 |
C5—C4 | 1.378 (3) | C4—H4 | 0.9500 |
C5—C6 | 1.394 (3) | C12—C11 | 1.379 (3) |
C5—H5 | 0.9500 | C12—H12 | 0.9500 |
C3—C2 | 1.376 (3) | C11—H11 | 0.9500 |
N1—S1—C1 | 90.41 (9) | C11—C10—H10 | 119.8 |
C7—N1—C8 | 120.30 (16) | C9—C10—H10 | 119.8 |
C7—N1—S1 | 116.28 (13) | C13—C14—C9 | 118.83 (19) |
C8—N1—S1 | 123.42 (13) | C13—C14—H14 | 120.6 |
C14—C13—C12 | 123.6 (2) | C9—C14—H14 | 120.6 |
C14—C13—Br1 | 117.97 (16) | C1—C6—C5 | 120.22 (18) |
C12—C13—Br1 | 118.46 (17) | C1—C6—C7 | 113.01 (18) |
O1—C7—N1 | 122.90 (18) | C5—C6—C7 | 126.76 (18) |
O1—C7—C6 | 128.46 (19) | N2—C8—N1 | 114.72 (16) |
N1—C7—C6 | 108.64 (17) | N2—C8—H8A | 108.6 |
C9—N2—C8 | 122.78 (18) | N1—C8—H8A | 108.6 |
C9—N2—H2N | 112.0 (16) | N2—C8—H8B | 108.6 |
C8—N2—H2N | 117.8 (16) | N1—C8—H8B | 108.6 |
C4—C5—C6 | 119.1 (2) | H8A—C8—H8B | 107.6 |
C4—C5—H5 | 120.5 | C3—C2—C1 | 117.7 (2) |
C6—C5—H5 | 120.5 | C3—C2—H2 | 121.2 |
C2—C3—C4 | 121.8 (2) | C1—C2—H2 | 121.2 |
C2—C3—H3 | 119.1 | C5—C4—C3 | 120.3 (2) |
C4—C3—H3 | 119.1 | C5—C4—H4 | 119.9 |
C6—C1—C2 | 121.0 (2) | C3—C4—H4 | 119.9 |
C6—C1—S1 | 111.65 (15) | C13—C12—C11 | 116.9 (2) |
C2—C1—S1 | 127.33 (17) | C13—C12—H12 | 121.5 |
N2—C9—C10 | 122.76 (19) | C11—C12—H12 | 121.5 |
N2—C9—C14 | 118.63 (19) | C12—C11—C10 | 121.6 (2) |
C10—C9—C14 | 118.60 (19) | C12—C11—H11 | 119.2 |
C11—C10—C9 | 120.5 (2) | C10—C11—H11 | 119.2 |
C1—S1—N1—C7 | 0.55 (16) | S1—C1—C6—C7 | 0.5 (2) |
C1—S1—N1—C8 | −179.97 (16) | C4—C5—C6—C1 | 0.1 (3) |
C8—N1—C7—O1 | 0.0 (3) | C4—C5—C6—C7 | −179.39 (19) |
S1—N1—C7—O1 | 179.45 (15) | O1—C7—C6—C1 | −179.89 (19) |
C8—N1—C7—C6 | −179.87 (16) | N1—C7—C6—C1 | −0.1 (2) |
S1—N1—C7—C6 | −0.4 (2) | O1—C7—C6—C5 | −0.4 (3) |
N1—S1—C1—C6 | −0.57 (15) | N1—C7—C6—C5 | 179.41 (18) |
N1—S1—C1—C2 | −179.34 (19) | C9—N2—C8—N1 | 74.6 (2) |
C8—N2—C9—C10 | 14.7 (3) | C7—N1—C8—N2 | 76.3 (2) |
C8—N2—C9—C14 | −166.54 (18) | S1—N1—C8—N2 | −103.16 (19) |
N2—C9—C10—C11 | 179.0 (2) | C4—C3—C2—C1 | 0.7 (3) |
C14—C9—C10—C11 | 0.3 (3) | C6—C1—C2—C3 | −0.2 (3) |
C12—C13—C14—C9 | 0.5 (3) | S1—C1—C2—C3 | 178.47 (16) |
Br1—C13—C14—C9 | −178.70 (15) | C6—C5—C4—C3 | 0.4 (3) |
N2—C9—C14—C13 | −179.28 (18) | C2—C3—C4—C5 | −0.9 (3) |
C10—C9—C14—C13 | −0.5 (3) | C14—C13—C12—C11 | −0.3 (4) |
C2—C1—C6—C5 | −0.2 (3) | Br1—C13—C12—C11 | 178.94 (18) |
S1—C1—C6—C5 | −179.05 (15) | C13—C12—C11—C10 | 0.0 (4) |
C2—C1—C6—C7 | 179.34 (18) | C9—C10—C11—C12 | 0.0 (4) |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2N···O1i | 0.82 (2) | 2.14 (2) | 2.939 (2) | 167 (2) |
C3—H3···O1ii | 0.95 | 2.59 | 3.484 (3) | 157 |
C10—H10···Br1iii | 0.95 | 2.93 | 3.545 (3) | 124 |
C14—H14···O1i | 0.95 | 2.46 | 3.207 (3) | 135 |
Symmetry codes: (i) −x+2, −y+1, −z+2; (ii) x, y, z+1; (iii) x+1, −y+3/2, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C14H11BrN2OS |
Mr | 335.22 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 153 |
a, b, c (Å) | 7.351 (2), 22.781 (7), 8.559 (3) |
β (°) | 109.580 (4) |
V (Å3) | 1350.5 (7) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 3.19 |
Crystal size (mm) | 0.38 × 0.37 × 0.31 |
Data collection | |
Diffractometer | Rigaku AFC10/Saturn724+ diffractometer |
Absorption correction | Multi-scan (ABSCOR; Higashi, 1995) |
Tmin, Tmax | 0.374, 0.436 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11631, 3587, 2709 |
Rint | 0.037 |
(sin θ/λ)max (Å−1) | 0.685 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.032, 0.069, 1.00 |
No. of reflections | 3587 |
No. of parameters | 176 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.44, −0.52 |
Computer programs: CrystalClear (Rigaku, 2008), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999), SHELXTL (Sheldrick, 2008) and publCIF (Westrip, 2010).
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2N···O1i | 0.82 (2) | 2.14 (2) | 2.939 (2) | 167 (2) |
C3—H3···O1ii | 0.95 | 2.59 | 3.484 (3) | 157 |
C10—H10···Br1iii | 0.95 | 2.93 | 3.545 (3) | 124 |
C14—H14···O1i | 0.95 | 2.46 | 3.207 (3) | 135 |
Symmetry codes: (i) −x+2, −y+1, −z+2; (ii) x, y, z+1; (iii) x+1, −y+3/2, z+1/2. |
Acknowledgements
This work was supproted by the National Natural Science Foundation of China (No. 20962007) and the Creative Talents Plan of Hainan University 211 project.
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.
The work presented herein is part of our interest in synthesizing various benzisothiazolone derivatives and confirming their structures by X-ray analysis (Wang et al., 2011; Wang, Yang et al., 2011a,b). These compounds will be utilized for the study of comparative bioactivity.
The molecular structure of the title compound is shown in Fig. 1. In the molecule, the benzisothiazolone ring system is approximately planar with a maximum deviation from the mean plane of 0.0142 A ° for the atom C1, and the dihedral angle between the benzene ring and the benzisothiazolone ring is 79.169 (5)°. In the crystal structure, intermolecular N—H···O, C—H···O and C—H···Br hydrogen bonds (Table 1) link molecules into a three-dimensional network (Fig. 2).