Abstract
In the title molecule, C18H12N2OS, the dihedral angle between the two fused-ring systems is 7.2 (1)°. The hydroxy group forms an intramolecular hydrogen bond with the imino group.
Related literature
For the crystal structures of other Schiff bases derived by condensing benzthiazolyl-2-amine with aldehydes/ketones, see: Büyükgüngör et al. (2004 ▶); Cannon et al. (2001 ▶); Guo et al. (2002 ▶); Saraçoğlu et al. (2004 ▶).
Experimental
Crystal data
C18H12N2OS
M r = 304.36
Monoclinic,
a = 9.6398 (2) Å
b = 14.9687 (4) Å
c = 9.6646 (2) Å
β = 101.323 (2)°
V = 1367.41 (5) Å3
Z = 4
Mo Kα radiation
μ = 0.24 mm−1
T = 123 K
0.25 × 0.20 × 0.05 mm
Data collection
Bruker SMART APEX diffractometer
Absorption correction: multi-scan (SADABS; Sheldrick, 1996 ▶) T min = 0.943, T max = 0.988
12442 measured reflections
3139 independent reflections
2396 reflections with I > 2σ(I)
R int = 0.051
Refinement
R[F 2 > 2σ(F 2)] = 0.043
wR(F 2) = 0.122
S = 1.02
3139 reflections
203 parameters
1 restraint
H atoms treated by a mixture of independent and constrained refinement
Δρmax = 0.53 e Å−3
Δρmin = −0.23 e Å−3
Data collection: APEX2 (Bruker, 2008 ▶); cell refinement: SAINT (Bruker, 2008 ▶); 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: publCIF (Westrip, 2009 ▶).
Supplementary Material
Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536809008514/lh2783sup1.cif
Structure factors: contains datablocks I. DOI: 10.1107/S1600536809008514/lh2783Isup2.hkl
Additional supplementary materials: crystallographic information; 3D view; checkCIF report
Table 1. Hydrogen-bond geometry (Å, °).
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| O1—H1⋯N1 | 0.84 (1) | 1.82 (2) | 2.573 (2) | 148 (3) |
Acknowledgments
We thank King Abdul Aziz University (grant No. 171/428) and the University of Malaya for supporting this study.
supplementary crystallographic information
Comment
The molecular structure of the title compound is shown in Fig. 1.
Experimental
2-Aminobenzothiazole (4.0 g, 26.6 mmol) dissolved in ethanol (25 ml) was added to 2-hydroxybenzaldehyde (4.58 g, 26.6 mmol) dissolved in ethanol (25 ml). The mixture was heated for another hour. The solid that separated from the reaction mixture was isolated and recrystallized from ethanol.
Refinement
Carbon-bound H-atoms were placed in calculated positions (C–H 0.95 Å) and were included in the refinement in the riding model approximation, with U(H) fixed at 1.2U(C).
The hydroxy H-atom was located in a difference Fouier map, and was refined with a distance restraint of O–H 0.84±0.01 Å; its isotropic displacement parameter was refined.
Figures
Fig. 1.
Thermal ellisoid plot (Barbour, 2001) of C18H12N2OS; probability levels are set at 70% and H-atoms are drawn as spheres of arbitrary radius. The dashed line denotes the hydrogen bond.
Crystal data
| C18H12N2OS | F(000) = 632 |
| Mr = 304.36 | Dx = 1.481 Mg m−3 |
| Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
| Hall symbol: -P 2yn | Cell parameters from 2677 reflections |
| a = 9.6398 (2) Å | θ = 2.5–28.1° |
| b = 14.9687 (4) Å | µ = 0.24 mm−1 |
| c = 9.6646 (2) Å | T = 123 K |
| β = 101.323 (2)° | Irregular block, orange |
| V = 1367.41 (5) Å3 | 0.25 × 0.20 × 0.05 mm |
| Z = 4 |
Data collection
| Bruker SMART APEX diffractometer | 3139 independent reflections |
| Radiation source: fine-focus sealed tube | 2396 reflections with I > 2˘I) |
| graphite | Rint = 0.051 |
| ω scans | θmax = 27.5°, θmin = 2.5° |
| Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −12→12 |
| Tmin = 0.943, Tmax = 0.988 | k = −19→19 |
| 12442 measured reflections | l = −12→12 |
Refinement
| 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)] = 0.043 | Hydrogen site location: inferred from neighbouring sites |
| wR(F2) = 0.122 | H atoms treated by a mixture of independent and constrained refinement |
| S = 1.02 | w = 1/[σ2(Fo2) + (0.0612P)2 + 0.543P] where P = (Fo2 + 2Fc2)/3 |
| 3139 reflections | (Δ/σ)max = 0.001 |
| 203 parameters | Δρmax = 0.53 e Å−3 |
| 1 restraint | Δρmin = −0.23 e Å−3 |
Special details
| 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. |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2)
| x | y | z | Uiso*/Ueq | ||
| S1 | 0.62414 (5) | 0.57067 (3) | 0.89471 (5) | 0.02326 (15) | |
| O1 | 0.28598 (15) | 0.35583 (9) | 0.77536 (15) | 0.0261 (3) | |
| H1 | 0.348 (2) | 0.3964 (14) | 0.782 (3) | 0.057 (9)* | |
| N1 | 0.41330 (16) | 0.49518 (10) | 0.70645 (17) | 0.0214 (4) | |
| N2 | 0.53279 (16) | 0.62326 (11) | 0.63631 (17) | 0.0218 (3) | |
| C1 | 0.19789 (19) | 0.36352 (12) | 0.6498 (2) | 0.0207 (4) | |
| C2 | 0.0903 (2) | 0.29840 (13) | 0.6173 (2) | 0.0236 (4) | |
| H2 | 0.0831 | 0.2524 | 0.6833 | 0.028* | |
| C3 | −0.0028 (2) | 0.30118 (13) | 0.4924 (2) | 0.0227 (4) | |
| H3 | −0.0733 | 0.2562 | 0.4715 | 0.027* | |
| C4 | 0.00270 (19) | 0.37013 (12) | 0.3918 (2) | 0.0205 (4) | |
| C5 | −0.0966 (2) | 0.37268 (13) | 0.2635 (2) | 0.0242 (4) | |
| H5 | −0.1667 | 0.3274 | 0.2434 | 0.029* | |
| C6 | −0.0935 (2) | 0.43936 (14) | 0.1678 (2) | 0.0257 (4) | |
| H6 | −0.1613 | 0.4407 | 0.0819 | 0.031* | |
| C7 | 0.0109 (2) | 0.50600 (13) | 0.1975 (2) | 0.0246 (4) | |
| H7 | 0.0131 | 0.5526 | 0.1312 | 0.030* | |
| C8 | 0.1093 (2) | 0.50481 (13) | 0.3206 (2) | 0.0219 (4) | |
| H8 | 0.1790 | 0.5504 | 0.3380 | 0.026* | |
| C9 | 0.10912 (19) | 0.43680 (12) | 0.42252 (19) | 0.0189 (4) | |
| C10 | 0.20982 (19) | 0.43225 (12) | 0.5546 (2) | 0.0190 (4) | |
| C11 | 0.3197 (2) | 0.49736 (13) | 0.5896 (2) | 0.0210 (4) | |
| H11 | 0.3245 | 0.5443 | 0.5245 | 0.025* | |
| C12 | 0.51359 (19) | 0.56351 (12) | 0.7280 (2) | 0.0205 (4) | |
| C13 | 0.64047 (19) | 0.68133 (12) | 0.6951 (2) | 0.0199 (4) | |
| C14 | 0.6849 (2) | 0.75430 (13) | 0.6250 (2) | 0.0230 (4) | |
| H14 | 0.6414 | 0.7675 | 0.5303 | 0.028* | |
| C15 | 0.7934 (2) | 0.80674 (13) | 0.6964 (2) | 0.0251 (4) | |
| H15 | 0.8252 | 0.8562 | 0.6495 | 0.030* | |
| C16 | 0.8576 (2) | 0.78866 (13) | 0.8360 (2) | 0.0256 (4) | |
| H16 | 0.9320 | 0.8260 | 0.8826 | 0.031* | |
| C17 | 0.8139 (2) | 0.71684 (13) | 0.9077 (2) | 0.0245 (4) | |
| H17 | 0.8570 | 0.7046 | 1.0029 | 0.029* | |
| C18 | 0.7052 (2) | 0.66319 (13) | 0.8359 (2) | 0.0214 (4) |
Atomic displacement parameters (Å2)
| U11 | U22 | U33 | U12 | U13 | U23 | |
| S1 | 0.0230 (3) | 0.0244 (3) | 0.0214 (3) | −0.00141 (19) | 0.00199 (18) | 0.00103 (19) |
| O1 | 0.0272 (7) | 0.0245 (8) | 0.0252 (7) | −0.0027 (6) | 0.0017 (6) | 0.0047 (6) |
| N1 | 0.0198 (8) | 0.0208 (8) | 0.0237 (8) | −0.0009 (6) | 0.0049 (6) | −0.0016 (7) |
| N2 | 0.0210 (8) | 0.0221 (8) | 0.0220 (8) | −0.0008 (6) | 0.0034 (6) | −0.0001 (7) |
| C1 | 0.0204 (9) | 0.0202 (9) | 0.0224 (10) | 0.0019 (7) | 0.0065 (7) | −0.0006 (7) |
| C2 | 0.0261 (10) | 0.0194 (9) | 0.0276 (10) | −0.0001 (8) | 0.0112 (8) | 0.0027 (8) |
| C3 | 0.0211 (9) | 0.0188 (9) | 0.0301 (11) | −0.0030 (7) | 0.0098 (8) | −0.0036 (8) |
| C4 | 0.0197 (9) | 0.0193 (9) | 0.0241 (10) | 0.0010 (7) | 0.0081 (7) | −0.0031 (8) |
| C5 | 0.0198 (9) | 0.0231 (10) | 0.0295 (11) | −0.0015 (8) | 0.0045 (8) | −0.0066 (8) |
| C6 | 0.0240 (10) | 0.0278 (11) | 0.0235 (10) | 0.0055 (8) | 0.0006 (8) | −0.0047 (8) |
| C7 | 0.0280 (10) | 0.0238 (10) | 0.0230 (10) | 0.0048 (8) | 0.0074 (8) | 0.0007 (8) |
| C8 | 0.0227 (9) | 0.0194 (9) | 0.0249 (10) | −0.0009 (7) | 0.0078 (8) | −0.0013 (8) |
| C9 | 0.0185 (9) | 0.0178 (9) | 0.0216 (9) | 0.0025 (7) | 0.0067 (7) | −0.0019 (7) |
| C10 | 0.0183 (9) | 0.0176 (9) | 0.0223 (9) | 0.0018 (7) | 0.0072 (7) | −0.0015 (7) |
| C11 | 0.0218 (9) | 0.0192 (9) | 0.0236 (10) | 0.0007 (7) | 0.0082 (7) | 0.0005 (8) |
| C12 | 0.0191 (9) | 0.0213 (9) | 0.0210 (9) | 0.0024 (7) | 0.0035 (7) | −0.0024 (7) |
| C13 | 0.0181 (9) | 0.0186 (9) | 0.0236 (10) | 0.0031 (7) | 0.0053 (7) | −0.0030 (7) |
| C14 | 0.0229 (9) | 0.0213 (10) | 0.0247 (10) | 0.0020 (8) | 0.0050 (8) | −0.0003 (8) |
| C15 | 0.0256 (10) | 0.0201 (10) | 0.0311 (11) | 0.0003 (8) | 0.0093 (8) | −0.0006 (8) |
| C16 | 0.0214 (9) | 0.0235 (10) | 0.0319 (11) | −0.0011 (8) | 0.0057 (8) | −0.0065 (8) |
| C17 | 0.0223 (10) | 0.0280 (11) | 0.0229 (10) | 0.0028 (8) | 0.0037 (8) | −0.0041 (8) |
| C18 | 0.0204 (9) | 0.0220 (9) | 0.0227 (10) | 0.0028 (8) | 0.0067 (7) | −0.0026 (8) |
Geometric parameters (Å, °)
| S1—C18 | 1.740 (2) | C6—H6 | 0.9500 |
| S1—C12 | 1.7519 (19) | C7—C8 | 1.368 (3) |
| O1—C1 | 1.343 (2) | C7—H7 | 0.9500 |
| O1—H1 | 0.843 (10) | C8—C9 | 1.417 (3) |
| N1—C11 | 1.300 (2) | C8—H8 | 0.9500 |
| N1—C12 | 1.395 (2) | C9—C10 | 1.445 (3) |
| N2—C12 | 1.298 (2) | C10—C11 | 1.430 (3) |
| N2—C13 | 1.387 (2) | C11—H11 | 0.9500 |
| C1—C10 | 1.400 (3) | C13—C14 | 1.396 (3) |
| C1—C2 | 1.413 (3) | C13—C18 | 1.408 (3) |
| C2—C3 | 1.356 (3) | C14—C15 | 1.380 (3) |
| C2—H2 | 0.9500 | C14—H14 | 0.9500 |
| C3—C4 | 1.426 (3) | C15—C16 | 1.397 (3) |
| C3—H3 | 0.9500 | C15—H15 | 0.9500 |
| C4—C5 | 1.410 (3) | C16—C17 | 1.388 (3) |
| C4—C9 | 1.420 (3) | C16—H16 | 0.9500 |
| C5—C6 | 1.365 (3) | C17—C18 | 1.392 (3) |
| C5—H5 | 0.9500 | C17—H17 | 0.9500 |
| C6—C7 | 1.406 (3) | ||
| C18—S1—C12 | 88.83 (9) | C8—C9—C10 | 123.76 (17) |
| C1—O1—H1 | 109 (2) | C4—C9—C10 | 118.92 (17) |
| C11—N1—C12 | 116.99 (16) | C1—C10—C11 | 119.86 (17) |
| C12—N2—C13 | 110.36 (16) | C1—C10—C9 | 119.17 (17) |
| O1—C1—C10 | 122.56 (17) | C11—C10—C9 | 120.96 (17) |
| O1—C1—C2 | 116.63 (17) | N1—C11—C10 | 122.94 (18) |
| C10—C1—C2 | 120.82 (18) | N1—C11—H11 | 118.5 |
| C3—C2—C1 | 120.34 (18) | C10—C11—H11 | 118.5 |
| C3—C2—H2 | 119.8 | N2—C12—N1 | 126.25 (17) |
| C1—C2—H2 | 119.8 | N2—C12—S1 | 116.32 (14) |
| C2—C3—C4 | 121.51 (18) | N1—C12—S1 | 117.44 (14) |
| C2—C3—H3 | 119.2 | N2—C13—C14 | 124.58 (17) |
| C4—C3—H3 | 119.2 | N2—C13—C18 | 115.42 (17) |
| C5—C4—C9 | 120.17 (18) | C14—C13—C18 | 120.00 (17) |
| C5—C4—C3 | 120.62 (17) | C15—C14—C13 | 118.50 (18) |
| C9—C4—C3 | 119.21 (18) | C15—C14—H14 | 120.8 |
| C6—C5—C4 | 120.93 (18) | C13—C14—H14 | 120.7 |
| C6—C5—H5 | 119.5 | C14—C15—C16 | 121.43 (19) |
| C4—C5—H5 | 119.5 | C14—C15—H15 | 119.3 |
| C5—C6—C7 | 119.37 (19) | C16—C15—H15 | 119.3 |
| C5—C6—H6 | 120.3 | C17—C16—C15 | 120.81 (19) |
| C7—C6—H6 | 120.3 | C17—C16—H16 | 119.6 |
| C8—C7—C6 | 120.97 (19) | C15—C16—H16 | 119.6 |
| C8—C7—H7 | 119.5 | C16—C17—C18 | 118.07 (19) |
| C6—C7—H7 | 119.5 | C16—C17—H17 | 121.0 |
| C7—C8—C9 | 121.24 (18) | C18—C17—H17 | 121.0 |
| C7—C8—H8 | 119.4 | C17—C18—C13 | 121.18 (18) |
| C9—C8—H8 | 119.4 | C17—C18—S1 | 129.72 (16) |
| C8—C9—C4 | 117.32 (17) | C13—C18—S1 | 109.07 (14) |
| O1—C1—C2—C3 | −179.77 (17) | C12—N1—C11—C10 | −179.24 (16) |
| C10—C1—C2—C3 | 0.5 (3) | C1—C10—C11—N1 | 1.6 (3) |
| C1—C2—C3—C4 | −1.3 (3) | C9—C10—C11—N1 | −179.23 (17) |
| C2—C3—C4—C5 | −178.90 (18) | C13—N2—C12—N1 | 179.17 (17) |
| C2—C3—C4—C9 | 0.7 (3) | C13—N2—C12—S1 | −0.3 (2) |
| C9—C4—C5—C6 | −0.8 (3) | C11—N1—C12—N2 | −8.4 (3) |
| C3—C4—C5—C6 | 178.85 (18) | C11—N1—C12—S1 | 171.09 (14) |
| C4—C5—C6—C7 | 0.4 (3) | C18—S1—C12—N2 | −0.17 (15) |
| C5—C6—C7—C8 | 0.2 (3) | C18—S1—C12—N1 | −179.72 (15) |
| C6—C7—C8—C9 | −0.3 (3) | C12—N2—C13—C14 | −178.50 (17) |
| C7—C8—C9—C4 | −0.1 (3) | C12—N2—C13—C18 | 0.8 (2) |
| C7—C8—C9—C10 | −179.70 (17) | N2—C13—C14—C15 | 179.92 (17) |
| C5—C4—C9—C8 | 0.6 (3) | C18—C13—C14—C15 | 0.6 (3) |
| C3—C4—C9—C8 | −179.03 (16) | C13—C14—C15—C16 | −0.6 (3) |
| C5—C4—C9—C10 | −179.76 (16) | C14—C15—C16—C17 | 0.1 (3) |
| C3—C4—C9—C10 | 0.6 (3) | C15—C16—C17—C18 | 0.4 (3) |
| O1—C1—C10—C11 | 0.4 (3) | C16—C17—C18—C13 | −0.4 (3) |
| C2—C1—C10—C11 | −179.91 (17) | C16—C17—C18—S1 | −178.59 (15) |
| O1—C1—C10—C9 | −178.88 (16) | N2—C13—C18—C17 | −179.46 (17) |
| C2—C1—C10—C9 | 0.9 (3) | C14—C13—C18—C17 | −0.1 (3) |
| C8—C9—C10—C1 | 178.24 (17) | N2—C13—C18—S1 | −0.9 (2) |
| C4—C9—C10—C1 | −1.4 (3) | C14—C13—C18—S1 | 178.42 (14) |
| C8—C9—C10—C11 | −1.0 (3) | C12—S1—C18—C17 | 178.94 (19) |
| C4—C9—C10—C11 | 179.39 (17) | C12—S1—C18—C13 | 0.60 (14) |
Hydrogen-bond geometry (Å, °)
| D—H···A | D—H | H···A | D···A | D—H···A |
| O1—H1···N1 | 0.84 (1) | 1.82 (2) | 2.573 (2) | 148 (3) |
Footnotes
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: LH2783).
References
- Barbour, L. J. (2001). J. Supramol. Chem.1, 189–191.
- Bruker (2008). APEX2 and SAINT Bruker AXS Inc., Madison, Wisconsin, USA.
- Büyükgüngör, O., Çalışkan, N., Davran, C. & Batı, H. (2004). Acta Cryst. E60, o1414–o1416.
- Cannon, D., Quesada, A., Quiroga, J., Insuasty, B., Abonia, R., Hernández, P., Cobo, J., Nogueras, M., Sánchez, A. & Low, J. N. (2001). Acta Cryst. E57, o180–o181.
- Guo, Y.-S., Yu, Z.-H. & Jin, X.-L. (2002). Acta Chim. Sin.60, 228–233.
- Saraçoğlu, H., Çalışkan, N., Davran, C., Soylu, S., Batı, H. & Büyükgüngör, O. (2004). Acta Cryst. E60, o2090–o2092. [DOI] [PubMed]
- Sheldrick, G. M. (1996). SADABS University of Göttingen, Germany.
- Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. [DOI] [PubMed]
- Westrip, S. P. (2009). publCIF In preparation.
Associated Data
This section collects any data citations, data availability statements, or supplementary materials included in this article.
Supplementary Materials
Crystal structure: contains datablocks global, I. DOI: 10.1107/S1600536809008514/lh2783sup1.cif
Structure factors: contains datablocks I. DOI: 10.1107/S1600536809008514/lh2783Isup2.hkl
Additional supplementary materials: crystallographic information; 3D view; checkCIF report

