Abstract
In the title compound, C13H10BrNO, the dihedral angle between the benzene rings is 35.20 (8)°. In the crystal, molecules are linked by O—H⋯N hydrogen bonds, forming a zigzag chain along the a axis. A weak C—H⋯π interaction is observed between the chains.
Related literature
For the biological activity of benzylidene derivatives, see: El Masry et al. (2000 ▶); Fegade et al. (2009 ▶); Foroumadi et al. (2007 ▶); Hodnett & Dunn (1970 ▶); Hu & Zhou (2004 ▶); Jada et al. (2008 ▶); Samadhiya & Halve (2001 ▶); Singh & Dash (1988 ▶). For related structures, see: Cui et al. (2009 ▶); Sun et al. (2009 ▶). For bond-length data, see: Allen et al. (1987 ▶).
Experimental
Crystal data
C13H10BrNO
M r = 276.13
Orthorhombic,
a = 12.7035 (4) Å
b = 10.3897 (3) Å
c = 17.0899 (6) Å
V = 2255.62 (12) Å3
Z = 8
Mo Kα radiation
μ = 3.62 mm−1
T = 295 K
0.20 × 0.16 × 0.15 mm
Data collection
Bruker Kappa APEXII CCD diffractometer
Absorption correction: multi-scan (SADABS; Sheldrick, 1996 ▶) T min = 0.503, T max = 0.581
13273 measured reflections
2670 independent reflections
1710 reflections with I > 2σ(I)
R int = 0.043
Refinement
R[F 2 > 2σ(F 2)] = 0.035
wR(F 2) = 0.086
S = 1.00
2670 reflections
146 parameters
H-atom parameters constrained
Δρmax = 0.49 e Å−3
Δρmin = −0.40 e Å−3
Data collection: APEX2 (Bruker, 2004 ▶); cell refinement: SAINT (Bruker, 2004 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: PLATON (Spek, 2009 ▶); software used to prepare material for publication: SHELXL97.
Supplementary Material
Crystal structure: contains datablocks global, I. DOI: 10.1107/S160053680905538X/is2508sup1.cif
Structure factors: contains datablocks I. DOI: 10.1107/S160053680905538X/is2508Isup2.hkl
Additional supplementary materials: crystallographic information; 3D view; checkCIF report
Table 1. Hydrogen-bond geometry (Å, °).
Cg1 is the centroid of the C8–C13 ring.
| D—H⋯A | D—H | H⋯A | D⋯A | D—H⋯A |
|---|---|---|---|---|
| O1—H1⋯N1i | 0.82 | 2.05 | 2.848 (3) | 164 |
| C5—H5⋯Cg1ii | 0.93 | 2.89 | 3.374 (3) | 114 |
Symmetry codes: (i)
; (ii)
.
Acknowledgments
The authors wish to acknowledge the SAIF, IIT, Madras, for the data collection.
supplementary crystallographic information
Comment
Benzylidene derivatives exhibit antitumor (Hu & Zhou 2004) and antioxidant (Foroumadi et al., 2007) activities. Some N-benzylidene aniline derivatives show biological activities sucs as antibacterial (El Masry et al., 2000), antifungal (Singh & Dash, 1988), anticancer (Hodnett & Dunn, 1970) and herbicidal (Samadhiya & Halve, 2001). In addition, benzylidene derivatives of andrographolide are potential anticancer agents (Jada et al., 2008) and some of the benzylidene derivatives are acting as selective cyclooxygenase-2-inhibitors (Fegade et al., 2009).
The geometric parameters of the title compound (Fig. 1) agree well with reported similar structures (Cui et al., 2009; Sun et al., 2009). The dihedral angle between the benzene rings is 35.20 (8)°. The C—Br bond distance is 1.894 (2) Å, which is comparable to the literature value of 1.883 (15) Å (Allen et al., 1987). The crystal packing is stabilized by an O—H···N hydrogen bond and a weak C—H···π interaction (Table 1).
Experimental
A mixture of 4-bromobenzaldehyde (5 mmol), 4-aminophenol (5 mmol) and ethanol (40 ml) was refluxed for 2 h. It was then allowed to cool and filtered. Recrystallization of the crude product from ethanol yielded brown colored crystals.
Refinement
H atoms were positioned geometrically and refined using riding model, with O—H = 0.82 Å and Uiso(H) = 1.2Ueq(O), and C—H = 0.93 Å and Uiso(H) = 1.2Ueq(C).
Figures
Fig. 1.
The molecular structure of the title compound, with atom labels and 30% probability displacement ellipsoids for non-H atoms.
Crystal data
| C13H10BrNO | F(000) = 1104 |
| Mr = 276.13 | Dx = 1.626 Mg m−3 |
| Orthorhombic, Pbca | Mo Kα radiation, λ = 0.71073 Å |
| Hall symbol: -P 2ac 2ab | Cell parameters from 2371 reflections |
| a = 12.7035 (4) Å | θ = 2.4–23.7° |
| b = 10.3897 (3) Å | µ = 3.62 mm−1 |
| c = 17.0899 (6) Å | T = 295 K |
| V = 2255.62 (12) Å3 | Block, brown |
| Z = 8 | 0.20 × 0.16 × 0.15 mm |
Data collection
| Bruker Kappa APEXII CCD diffractometer | 2670 independent reflections |
| Radiation source: fine-focus sealed tube | 1710 reflections with I > 2σ(I) |
| graphite | Rint = 0.043 |
| ω and φ scans | θmax = 27.8°, θmin = 2.4° |
| Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −12→16 |
| Tmin = 0.503, Tmax = 0.581 | k = −12→13 |
| 13273 measured reflections | l = −22→22 |
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)] = 0.035 | Hydrogen site location: inferred from neighbouring sites |
| wR(F2) = 0.086 | H-atom parameters constrained |
| S = 1.00 | w = 1/[σ2(Fo2) + (0.0358P)2 + 0.8359P] where P = (Fo2 + 2Fc2)/3 |
| 2670 reflections | (Δ/σ)max = 0.001 |
| 146 parameters | Δρmax = 0.49 e Å−3 |
| 0 restraints | Δρmin = −0.39 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 | ||
| C1 | 0.16600 (18) | 0.0270 (2) | 0.54592 (14) | 0.0371 (6) | |
| C2 | 0.2620 (2) | −0.0367 (3) | 0.54384 (16) | 0.0463 (7) | |
| H2 | 0.2727 | −0.1086 | 0.5753 | 0.056* | |
| C3 | 0.34124 (19) | 0.0056 (3) | 0.49578 (18) | 0.0520 (7) | |
| H3 | 0.4054 | −0.0374 | 0.4944 | 0.062* | |
| C4 | 0.32501 (19) | 0.1120 (3) | 0.44968 (15) | 0.0422 (6) | |
| C5 | 0.2319 (2) | 0.1769 (3) | 0.45068 (16) | 0.0463 (7) | |
| H5 | 0.2220 | 0.2490 | 0.4192 | 0.056* | |
| C6 | 0.1528 (2) | 0.1340 (3) | 0.49907 (16) | 0.0449 (7) | |
| H6 | 0.0891 | 0.1780 | 0.5002 | 0.054* | |
| C7 | 0.07751 (18) | −0.0183 (3) | 0.59347 (15) | 0.0383 (6) | |
| H7 | 0.0158 | 0.0298 | 0.5927 | 0.046* | |
| C8 | −0.01245 (17) | −0.1551 (2) | 0.67752 (14) | 0.0325 (5) | |
| C9 | −0.08369 (16) | −0.0690 (2) | 0.70991 (15) | 0.0365 (6) | |
| H9 | −0.0736 | 0.0189 | 0.7031 | 0.044* | |
| C10 | −0.16897 (17) | −0.1120 (2) | 0.75198 (14) | 0.0368 (6) | |
| H10 | −0.2155 | −0.0532 | 0.7740 | 0.044* | |
| C11 | −0.18585 (16) | −0.2426 (2) | 0.76165 (15) | 0.0360 (6) | |
| C12 | −0.11568 (19) | −0.3294 (2) | 0.72949 (16) | 0.0412 (6) | |
| H12 | −0.1267 | −0.4174 | 0.7355 | 0.049* | |
| C13 | −0.02907 (18) | −0.2855 (2) | 0.68836 (15) | 0.0388 (6) | |
| H13 | 0.0186 | −0.3443 | 0.6677 | 0.047* | |
| N1 | 0.07946 (14) | −0.1183 (2) | 0.63553 (12) | 0.0367 (5) | |
| O1 | −0.26777 (13) | −0.29148 (18) | 0.80295 (12) | 0.0497 (5) | |
| H1 | −0.3015 | −0.2324 | 0.8226 | 0.075* | |
| Br1 | 0.43298 (2) | 0.16639 (3) | 0.38080 (2) | 0.06483 (15) |
Atomic displacement parameters (Å2)
| U11 | U22 | U33 | U12 | U13 | U23 | |
| C1 | 0.0383 (13) | 0.0383 (15) | 0.0348 (14) | −0.0034 (11) | −0.0019 (11) | −0.0038 (12) |
| C2 | 0.0458 (14) | 0.0461 (16) | 0.0471 (16) | 0.0036 (12) | 0.0056 (13) | 0.0117 (14) |
| C3 | 0.0386 (14) | 0.0573 (19) | 0.0599 (19) | 0.0045 (13) | 0.0086 (14) | 0.0115 (15) |
| C4 | 0.0427 (14) | 0.0468 (16) | 0.0371 (15) | −0.0113 (12) | 0.0046 (12) | 0.0009 (13) |
| C5 | 0.0549 (16) | 0.0432 (16) | 0.0407 (16) | −0.0024 (13) | 0.0003 (13) | 0.0081 (13) |
| C6 | 0.0406 (14) | 0.0464 (17) | 0.0476 (17) | 0.0047 (11) | 0.0009 (13) | 0.0066 (13) |
| C7 | 0.0322 (13) | 0.0420 (16) | 0.0406 (14) | 0.0007 (10) | −0.0006 (11) | −0.0023 (13) |
| C8 | 0.0268 (11) | 0.0357 (14) | 0.0349 (13) | −0.0010 (10) | −0.0028 (10) | 0.0021 (11) |
| C9 | 0.0337 (12) | 0.0305 (13) | 0.0452 (16) | −0.0010 (10) | −0.0018 (11) | 0.0006 (12) |
| C10 | 0.0332 (13) | 0.0360 (15) | 0.0411 (15) | 0.0066 (10) | −0.0012 (11) | −0.0013 (12) |
| C11 | 0.0291 (12) | 0.0387 (16) | 0.0403 (15) | 0.0004 (10) | 0.0010 (11) | 0.0041 (11) |
| C12 | 0.0361 (12) | 0.0308 (14) | 0.0566 (18) | 0.0013 (11) | 0.0019 (12) | 0.0056 (13) |
| C13 | 0.0319 (12) | 0.0364 (15) | 0.0480 (16) | 0.0076 (11) | 0.0022 (11) | 0.0021 (13) |
| N1 | 0.0314 (10) | 0.0404 (12) | 0.0384 (13) | −0.0021 (8) | 0.0016 (9) | 0.0000 (10) |
| O1 | 0.0371 (10) | 0.0431 (11) | 0.0688 (14) | 0.0020 (8) | 0.0169 (9) | 0.0058 (10) |
| Br1 | 0.0582 (2) | 0.0736 (3) | 0.0627 (2) | −0.01461 (15) | 0.01935 (16) | 0.01033 (18) |
Geometric parameters (Å, °)
| C1—C6 | 1.380 (4) | C8—C13 | 1.383 (3) |
| C1—C2 | 1.388 (3) | C8—C9 | 1.388 (3) |
| C1—C7 | 1.465 (3) | C8—N1 | 1.423 (3) |
| C2—C3 | 1.371 (4) | C9—C10 | 1.375 (3) |
| C2—H2 | 0.9300 | C9—H9 | 0.9300 |
| C3—C4 | 1.373 (4) | C10—C11 | 1.383 (4) |
| C3—H3 | 0.9300 | C10—H10 | 0.9300 |
| C4—C5 | 1.362 (4) | C11—O1 | 1.356 (3) |
| C4—Br1 | 1.894 (2) | C11—C12 | 1.382 (3) |
| C5—C6 | 1.376 (4) | C12—C13 | 1.383 (3) |
| C5—H5 | 0.9300 | C12—H12 | 0.9300 |
| C6—H6 | 0.9300 | C13—H13 | 0.9300 |
| C7—N1 | 1.264 (3) | O1—H1 | 0.8200 |
| C7—H7 | 0.9300 | ||
| C6—C1—C2 | 118.4 (2) | C13—C8—C9 | 118.6 (2) |
| C6—C1—C7 | 119.2 (2) | C13—C8—N1 | 117.1 (2) |
| C2—C1—C7 | 122.4 (2) | C9—C8—N1 | 124.3 (2) |
| C3—C2—C1 | 120.5 (3) | C10—C9—C8 | 120.9 (2) |
| C3—C2—H2 | 119.8 | C10—C9—H9 | 119.6 |
| C1—C2—H2 | 119.8 | C8—C9—H9 | 119.6 |
| C2—C3—C4 | 119.4 (2) | C9—C10—C11 | 120.2 (2) |
| C2—C3—H3 | 120.3 | C9—C10—H10 | 119.9 |
| C4—C3—H3 | 120.3 | C11—C10—H10 | 119.9 |
| C5—C4—C3 | 121.5 (2) | O1—C11—C12 | 117.2 (2) |
| C5—C4—Br1 | 119.3 (2) | O1—C11—C10 | 123.3 (2) |
| C3—C4—Br1 | 119.2 (2) | C12—C11—C10 | 119.5 (2) |
| C4—C5—C6 | 118.7 (3) | C11—C12—C13 | 120.0 (2) |
| C4—C5—H5 | 120.6 | C11—C12—H12 | 120.0 |
| C6—C5—H5 | 120.6 | C13—C12—H12 | 120.0 |
| C5—C6—C1 | 121.4 (2) | C12—C13—C8 | 120.8 (2) |
| C5—C6—H6 | 119.3 | C12—C13—H13 | 119.6 |
| C1—C6—H6 | 119.3 | C8—C13—H13 | 119.6 |
| N1—C7—C1 | 124.4 (2) | C7—N1—C8 | 119.4 (2) |
| N1—C7—H7 | 117.8 | C11—O1—H1 | 109.5 |
| C1—C7—H7 | 117.8 | ||
| C6—C1—C2—C3 | −0.5 (4) | N1—C8—C9—C10 | −177.8 (2) |
| C7—C1—C2—C3 | 177.0 (3) | C8—C9—C10—C11 | −1.0 (4) |
| C1—C2—C3—C4 | 0.1 (5) | C9—C10—C11—O1 | 179.4 (2) |
| C2—C3—C4—C5 | 0.2 (5) | C9—C10—C11—C12 | 0.8 (4) |
| C2—C3—C4—Br1 | −177.9 (2) | O1—C11—C12—C13 | −178.4 (2) |
| C3—C4—C5—C6 | −0.1 (4) | C10—C11—C12—C13 | 0.3 (4) |
| Br1—C4—C5—C6 | 177.9 (2) | C11—C12—C13—C8 | −1.2 (4) |
| C4—C5—C6—C1 | −0.2 (4) | C9—C8—C13—C12 | 1.0 (4) |
| C2—C1—C6—C5 | 0.5 (4) | N1—C8—C13—C12 | 179.1 (2) |
| C7—C1—C6—C5 | −177.0 (3) | C1—C7—N1—C8 | −178.2 (2) |
| C6—C1—C7—N1 | 176.6 (3) | C13—C8—N1—C7 | 147.6 (3) |
| C2—C1—C7—N1 | −0.9 (4) | C9—C8—N1—C7 | −34.5 (4) |
| C13—C8—C9—C10 | 0.1 (4) |
Hydrogen-bond geometry (Å, °)
| Cg1 is the centroid of the C8–C13 ring. |
| D—H···A | D—H | H···A | D···A | D—H···A |
| O1—H1···N1i | 0.82 | 2.05 | 2.848 (3) | 164 |
| C5—H5···Cg1ii | 0.93 | 2.89 | 3.374 (3) | 114 |
Symmetry codes: (i) x−1/2, y, −z+3/2; (ii) −x, −y, −z+1.
Footnotes
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: IS2508).
References
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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/S160053680905538X/is2508sup1.cif
Structure factors: contains datablocks I. DOI: 10.1107/S160053680905538X/is2508Isup2.hkl
Additional supplementary materials: crystallographic information; 3D view; checkCIF report

