organic compounds
2-[(3-Bromophenyl)iminomethyl]phenol
aMicroscale Science Institute, Weifang University, Weifang 261061, People's Republic of China
*Correspondence e-mail: ffjian2008@163.com
The title compound, C13H10BrNO, was prepared by reaction of 3-bromoaniline with 2-hydroxybenzaldehyde at 377 K. The molecular structure and packing are stabilized by an intramolecular O—H⋯N hydrogen-bond interaction.
CCDC reference: 702591
Experimental
Crystal data
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Data collection
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Data collection: SMART (Bruker, 1997); cell SAINT (Bruker, 1997); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL.
Supporting information
CCDC reference: 702591
https://doi.org/10.1107/S1600536808027360/at2611sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536808027360/at2611Isup2.hkl
A mixture of 2-nitrobenzaldehyde (0.02 mol) and 4-methoxyaniline (0.02 mol) was stirred with ethanol (50 mL) at 377 K for 5 h, affording the title compound (4.33 g, yield 84.5%). Single crystals suitable for X-ray measurements were obtained by recrystallization from acetone at room temperature.
H atoms were positioned geometrically and allowed to ride on their parent atoms, with O—H and C—H distances of 0.82 and 0.93 Å, respectively, and with Uiso(H) = 1.2 or 1.5Ueq of the parent atoms.
The recent growing interest in
is also due to their ability to form intramolecular hydrogen bonds by electron coupling between acid–base centers (Rozwadowski et al., 1999). The part of our research is to find Schiff base with higher biological activity, we synthesized the title compound (I) and report its here.In the ═N bond length [1.273 (1) Å] is in agreement with that observed before (Jian et al., 2006). There are intramolecular O—H···N hydrogen-bond interactions to stabilize the (Table 1, Fig. 2).
of compound (I) (Fig. 1), the dihedral angle between the benzene rings (C1–C6) and (C7–C12) was 4.6 (2)°. The CFor related literature, see: Jian et al. (2006); Rozwadowski et al. (1999).
Data collection: SMART (Bruker, 1997); cell
SAINT (Bruker, 1997); data reduction: SAINT (Bruker, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C13H10BrNO | F(000) = 276.0 |
Mr = 276.13 | Dx = 1.676 Mg m−3 |
Monoclinic, P21 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2yb | Cell parameters from 1666 reflections |
a = 3.9700 (8) Å | θ = 1.6–25.0° |
b = 10.540 (2) Å | µ = 3.73 mm−1 |
c = 13.200 (3) Å | T = 293 K |
β = 98.00 (3)° | Bar, yellow |
V = 546.96 (19) Å3 | 0.12 × 0.10 × 0.07 mm |
Z = 2 |
Bruker SMART CCD area-detector diffractometer | 1666 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.032 |
Graphite monochromator | θmax = 25.0°, θmin = 1.6° |
φ and ω scans | h = −4→4 |
2736 measured reflections | k = −12→12 |
1822 independent reflections | l = −12→15 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.082 | H-atom parameters constrained |
wR(F2) = 0.229 | w = 1/[σ2(Fo2) + (0.1154P)2 + 2.8393P] where P = (Fo2 + 2Fc2)/3 |
S = 1.13 | (Δ/σ)max < 0.001 |
1822 reflections | Δρmax = 1.43 e Å−3 |
145 parameters | Δρmin = −1.17 e Å−3 |
1 restraint | Absolute structure: Flack (1983), 787 Freidel pairs |
Primary atom site location: structure-invariant direct methods | Absolute structure parameter: 0.1 (4) |
C13H10BrNO | V = 546.96 (19) Å3 |
Mr = 276.13 | Z = 2 |
Monoclinic, P21 | Mo Kα radiation |
a = 3.9700 (8) Å | µ = 3.73 mm−1 |
b = 10.540 (2) Å | T = 293 K |
c = 13.200 (3) Å | 0.12 × 0.10 × 0.07 mm |
β = 98.00 (3)° |
Bruker SMART CCD area-detector diffractometer | 1666 reflections with I > 2σ(I) |
2736 measured reflections | Rint = 0.032 |
1822 independent reflections |
R[F2 > 2σ(F2)] = 0.082 | H-atom parameters constrained |
wR(F2) = 0.229 | Δρmax = 1.43 e Å−3 |
S = 1.13 | Δρmin = −1.17 e Å−3 |
1822 reflections | Absolute structure: Flack (1983), 787 Freidel pairs |
145 parameters | Absolute structure parameter: 0.1 (4) |
1 restraint |
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 | 0.4943 (3) | 0.6144 (2) | 0.53030 (8) | 0.0544 (5) | |
N1 | 0.643 (3) | 0.4449 (9) | 0.9014 (8) | 0.041 (2) | |
C4 | 0.538 (4) | 0.5109 (12) | 0.7289 (10) | 0.046 (3) | |
H4A | 0.6652 | 0.5830 | 0.7485 | 0.055* | |
C10 | 0.793 (3) | 0.3864 (10) | 1.0766 (9) | 0.036 (3) | |
C3 | 0.402 (4) | 0.4950 (13) | 0.6277 (11) | 0.049 (3) | |
C11 | 0.800 (4) | 0.2937 (12) | 1.1480 (10) | 0.043 (3) | |
H11A | 0.7186 | 0.2137 | 1.1274 | 0.052* | |
C5 | 0.487 (3) | 0.4229 (12) | 0.8000 (10) | 0.043 (3) | |
C8 | 1.128 (4) | 0.5145 (14) | 1.2004 (12) | 0.057 (4) | |
H8A | 1.2470 | 0.5889 | 1.2187 | 0.068* | |
C12 | 0.918 (4) | 0.3124 (13) | 1.2476 (10) | 0.052 (4) | |
H12A | 0.8763 | 0.2550 | 1.2978 | 0.062* | |
C13 | 0.644 (4) | 0.3630 (11) | 0.9723 (11) | 0.041 (3) | |
H13A | 0.5431 | 0.2846 | 0.9561 | 0.050* | |
C9 | 0.978 (4) | 0.4994 (12) | 1.1041 (10) | 0.045 (3) | |
C7 | 1.110 (4) | 0.4238 (15) | 1.2716 (13) | 0.060 (4) | |
H7A | 1.2254 | 0.4348 | 1.3373 | 0.072* | |
O1 | 0.995 (3) | 0.5906 (16) | 1.0355 (8) | 0.081 (6) | |
H1 | 0.8925 | 0.5681 | 0.9801 | 0.121* | |
C6 | 0.304 (3) | 0.3157 (12) | 0.7675 (13) | 0.050 (4) | |
H6A | 0.2798 | 0.2530 | 0.8157 | 0.060* | |
C2 | 0.216 (4) | 0.3883 (13) | 0.5982 (12) | 0.049 (3) | |
H2A | 0.1275 | 0.3769 | 0.5298 | 0.059* | |
C1 | 0.157 (5) | 0.2960 (13) | 0.6708 (11) | 0.054 (4) | |
H1B | 0.0231 | 0.2250 | 0.6527 | 0.065* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Br1 | 0.0649 (8) | 0.0635 (8) | 0.0338 (6) | −0.0095 (9) | 0.0028 (5) | 0.0168 (7) |
N1 | 0.053 (6) | 0.034 (5) | 0.034 (5) | −0.002 (4) | 0.001 (5) | −0.001 (4) |
C4 | 0.060 (8) | 0.041 (7) | 0.035 (7) | 0.005 (6) | −0.002 (6) | 0.001 (5) |
C10 | 0.042 (7) | 0.035 (6) | 0.026 (6) | 0.004 (5) | −0.009 (5) | −0.007 (5) |
C3 | 0.053 (8) | 0.053 (8) | 0.040 (7) | 0.006 (6) | 0.000 (6) | −0.002 (6) |
C11 | 0.052 (8) | 0.045 (7) | 0.035 (7) | 0.015 (6) | 0.009 (6) | 0.002 (6) |
C5 | 0.039 (7) | 0.049 (7) | 0.038 (7) | 0.013 (6) | −0.002 (5) | −0.002 (5) |
C8 | 0.061 (9) | 0.043 (7) | 0.060 (9) | −0.009 (6) | −0.015 (7) | −0.003 (6) |
C12 | 0.073 (10) | 0.045 (7) | 0.034 (7) | 0.001 (7) | −0.007 (6) | 0.013 (6) |
C13 | 0.060 (8) | 0.028 (6) | 0.034 (7) | 0.004 (5) | 0.000 (6) | 0.000 (4) |
C9 | 0.056 (8) | 0.039 (6) | 0.041 (7) | 0.007 (6) | 0.003 (6) | 0.003 (6) |
C7 | 0.052 (9) | 0.066 (9) | 0.060 (9) | 0.002 (7) | −0.001 (7) | −0.005 (7) |
O1 | 0.096 (8) | 0.077 (16) | 0.065 (7) | −0.043 (8) | −0.005 (6) | −0.004 (7) |
C6 | 0.035 (7) | 0.032 (6) | 0.079 (10) | −0.009 (5) | −0.002 (7) | 0.004 (6) |
C2 | 0.039 (7) | 0.059 (9) | 0.049 (8) | 0.003 (6) | 0.006 (6) | −0.010 (7) |
C1 | 0.084 (11) | 0.043 (8) | 0.037 (7) | −0.011 (7) | 0.014 (7) | −0.013 (6) |
Br1—C3 | 1.872 (15) | C8—C7 | 1.35 (2) |
N1—C13 | 1.273 (17) | C8—H8A | 0.9300 |
N1—C5 | 1.414 (16) | C12—C7 | 1.41 (2) |
C4—C5 | 1.354 (19) | C12—H12A | 0.9300 |
C4—C3 | 1.379 (19) | C13—H13A | 0.9300 |
C4—H4A | 0.9300 | C9—O1 | 1.328 (19) |
C10—C11 | 1.355 (18) | C7—H7A | 0.9300 |
C10—C9 | 1.420 (18) | O1—H1 | 0.8200 |
C10—C13 | 1.443 (18) | C6—C1 | 1.34 (2) |
C3—C2 | 1.37 (2) | C6—H6A | 0.9300 |
C11—C12 | 1.348 (19) | C2—C1 | 1.41 (2) |
C11—H11A | 0.9300 | C2—H2A | 0.9300 |
C5—C6 | 1.381 (18) | C1—H1B | 0.9300 |
C8—C9 | 1.34 (2) | ||
C13—N1—C5 | 122.7 (11) | C7—C12—H12A | 121.8 |
C5—C4—C3 | 120.8 (13) | N1—C13—C10 | 123.0 (11) |
C5—C4—H4A | 119.6 | N1—C13—H13A | 118.5 |
C3—C4—H4A | 119.6 | C10—C13—H13A | 118.5 |
C11—C10—C9 | 117.9 (11) | O1—C9—C8 | 120.3 (13) |
C11—C10—C13 | 120.4 (11) | O1—C9—C10 | 120.4 (11) |
C9—C10—C13 | 121.1 (11) | C8—C9—C10 | 119.3 (12) |
C2—C3—C4 | 119.8 (14) | C8—C7—C12 | 120.8 (14) |
C2—C3—Br1 | 120.4 (11) | C8—C7—H7A | 119.6 |
C4—C3—Br1 | 119.7 (11) | C12—C7—H7A | 119.6 |
C12—C11—C10 | 122.9 (13) | C9—O1—H1 | 109.5 |
C12—C11—H11A | 118.6 | C1—C6—C5 | 124.1 (13) |
C10—C11—H11A | 118.6 | C1—C6—H6A | 117.9 |
C4—C5—C6 | 117.9 (13) | C5—C6—H6A | 117.9 |
C4—C5—N1 | 117.2 (12) | C3—C2—C1 | 120.5 (14) |
C6—C5—N1 | 124.8 (13) | C3—C2—H2A | 119.8 |
C9—C8—C7 | 121.2 (14) | C1—C2—H2A | 119.8 |
C9—C8—H8A | 119.4 | C6—C1—C2 | 116.7 (13) |
C7—C8—H8A | 119.4 | C6—C1—H1B | 121.6 |
C11—C12—C7 | 116.5 (14) | C2—C1—H1B | 121.6 |
C11—C12—H12A | 121.8 |
Experimental details
Crystal data | |
Chemical formula | C13H10BrNO |
Mr | 276.13 |
Crystal system, space group | Monoclinic, P21 |
Temperature (K) | 293 |
a, b, c (Å) | 3.9700 (8), 10.540 (2), 13.200 (3) |
β (°) | 98.00 (3) |
V (Å3) | 546.96 (19) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 3.73 |
Crystal size (mm) | 0.12 × 0.10 × 0.07 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 2736, 1822, 1666 |
Rint | 0.032 |
(sin θ/λ)max (Å−1) | 0.594 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.082, 0.229, 1.13 |
No. of reflections | 1822 |
No. of parameters | 145 |
No. of restraints | 1 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 1.43, −1.17 |
Absolute structure | Flack (1983), 787 Freidel pairs |
Absolute structure parameter | 0.1 (4) |
Computer programs: SMART (Bruker, 1997), SAINT (Bruker, 1997), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
References
Bruker (1997). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Flack, H. D. (1983). Acta Cryst. A39, 876–881. CrossRef CAS Web of Science IUCr Journals Google Scholar
Jian, F.-F., Zhuang, R.-R., Wang, K.-F., Zhao, P.-S. & Xiao, H.-L. (2006). Acta Cryst. E62, o3198–o3199. Web of Science CrossRef IUCr Journals Google Scholar
Rozwadowski, Z., Majewski, E., Dziembowska, T. & Hansen, P. E. (1999). J. Chem. Soc. Perkin Trans. 2, pp. 2809–2817. CrossRef Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
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The recent growing interest in Schiff bases is also due to their ability to form intramolecular hydrogen bonds by electron coupling between acid–base centers (Rozwadowski et al., 1999). The part of our research is to find Schiff base with higher biological activity, we synthesized the title compound (I) and report its crystal structure here.
In the crystal structure of compound (I) (Fig. 1), the dihedral angle between the benzene rings (C1–C6) and (C7–C12) was 4.6 (2)°. The C═N bond length [1.273 (1) Å] is in agreement with that observed before (Jian et al., 2006). There are intramolecular O—H···N hydrogen-bond interactions to stabilize the crystal structure (Table 1, Fig. 2).