organic compounds
(E)-3-[(2-Hydroxy-3-methoxybenzylidene)amino]benzoic acid
aDepartment of Chemistry, Payame Noor University, PO Box 19395-3697 Tehran, I. R. of IRAN, bDepartment of Chemistry, Marvdasht Branch, Islamic Azad University, Marvdasht, Iran, cDepartment of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran, dDepartment of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran, and eDepartment of Physics, University of Sargodha, Punjab, Pakistan
*Correspondence e-mail: h.kargar@pnu.ac.ir, dmntahir_uos@yahoo.com
In the title compound, C15H13NO4, the dihedral angle between the substituted benzene rings is 9.9 (8)°. Part of the molecule (the salicylaldimine segment) is disordered over two sets of sites, with a refined site-occupancy ratio of 0.550 (14):0.450 (14). Intramolecular O—H⋯N hydrogen bonds form S(6) ring motifs. In the crystal, pairs of O—H⋯O hydrogen bonds link molecules into centrosymmetric dimers with R22(8) ring motifs. The crystal packing also features C—H⋯π interactions.
Related literature
For standard bond lengths, see: Allen et al. (1987). For hydrogen-bond motifs, see: Bernstein et al. (1995). For background to Schiff base ligands and their complexes, see, for example, Kargar et al. (2011, 2012); Kia et al. (2010).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2005); cell SAINT (Bruker, 2005); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL and PLATON (Spek, 2009).
Supporting information
10.1107/S1600536812010549/bq2344sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536812010549/bq2344Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536812010549/bq2344Isup3.cml
The title compound was synthesized by adding 3-methoxyosalicylaldehyde (2 mmol) to a solution of 3-carboxyaniline (2 mmol) in ethanol (30 ml). The mixture was refluxed with stirring for half an hour. The resultant solution was filtered. Pale yellow single crystals of the title compound suitable for X-ray
were recrystallized from ethanol by slow evaporation of the solvents at room temperature over several days.The O-bound hydrogen atoms were positioned by a rotating O—H group model and constrained to the parent atoms with Uiso (H) = 1.5 Ueq (O). The rest of the hydrogen atoms were positioned geometrically with C—H = 0.93-0.97 Å and included in a riding model approximation with Uiso (H) = 1.2 or 1.5 Ueq (C). A rotating group model was applied to the methyl group. Since the crystal was very small and not optimal for diffraction the Data/Parameter ratio was not good. The similarity restraints (SIMU, DELU, and SAME) were applied to model the disorder.
In continuation of our work on the
of Schiff base ligands (Kargar et al., 2011; Kia et al., 2010; Kargar et al., 2012), we determined the X-ray structure of the title compound.The
of the title compound, Fig. 1, comprises a potentially bidentate N,O-donor Schiff base ligand. The bond lengths (Allen et al., 1987) and angles are within the normal ranges.The intramolecular O—H···N hydrogen bonds make S(6) ring motifs (Bernstein et al., 1995). The dihedral angle between the substituted benzene rings is 9.9 (8)°. Pairs of the centrosymmetric intermolecular O—H···O hydrogen bonds link molecules into dimers with R22(8) ring motifs (Fig. 2). A part of the molecule was disordered over two positions with a refined site occupancy ratio 0.55 (1)/0.45 (1). The crystal packing was further stabilized by the intermolecular C—H···π interactions (Table 2).
For standard bond lengths, see: Allen et al. (1987). For hydrogen-bond motifs, see: Bernstein et al. (1995). For background to Schiff base ligands and their complexes, see, for example, Kargar et al. (2011, 2012); Kia et al. (2010).
Data collection: APEX2 (Bruker, 2005); cell
SAINT (Bruker, 2005); data reduction: SAINT (Bruker, 2005); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).C15H13NO4 | Z = 2 |
Mr = 271.26 | F(000) = 284 |
Triclinic, P1 | Dx = 1.399 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 5.2738 (9) Å | Cell parameters from 1456 reflections |
b = 10.978 (2) Å | θ = 2.8–28.8° |
c = 12.084 (2) Å | µ = 0.10 mm−1 |
α = 107.044 (10)° | T = 296 K |
β = 100.776 (11)° | Block, pale-yellow |
γ = 97.539 (10)° | 0.19 × 0.12 × 0.09 mm |
V = 644.1 (2) Å3 |
Bruker SMART APEXII CCD area-detector diffractometer | 2308 independent reflections |
Radiation source: fine-focus sealed tube | 1253 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.047 |
φ and ω scans | θmax = 25.3°, θmin = 2.2° |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | h = −6→6 |
Tmin = 0.981, Tmax = 0.991 | k = −13→13 |
8775 measured reflections | l = −14→14 |
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)] = 0.081 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.258 | H-atom parameters constrained |
S = 1.05 | w = 1/[σ2(Fo2) + (0.1461P)2 + 0.0613P] where P = (Fo2 + 2Fc2)/3 |
2308 reflections | (Δ/σ)max < 0.001 |
279 parameters | Δρmax = 0.59 e Å−3 |
405 restraints | Δρmin = −0.28 e Å−3 |
C15H13NO4 | γ = 97.539 (10)° |
Mr = 271.26 | V = 644.1 (2) Å3 |
Triclinic, P1 | Z = 2 |
a = 5.2738 (9) Å | Mo Kα radiation |
b = 10.978 (2) Å | µ = 0.10 mm−1 |
c = 12.084 (2) Å | T = 296 K |
α = 107.044 (10)° | 0.19 × 0.12 × 0.09 mm |
β = 100.776 (11)° |
Bruker SMART APEXII CCD area-detector diffractometer | 2308 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 1253 reflections with I > 2σ(I) |
Tmin = 0.981, Tmax = 0.991 | Rint = 0.047 |
8775 measured reflections |
R[F2 > 2σ(F2)] = 0.081 | 405 restraints |
wR(F2) = 0.258 | H-atom parameters constrained |
S = 1.05 | Δρmax = 0.59 e Å−3 |
2308 reflections | Δρmin = −0.28 e Å−3 |
279 parameters |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 > 2sigma(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 | Occ. (<1) | |
C1 | 0.2047 (6) | −0.0156 (3) | 0.3825 (3) | 0.0503 (9) | |
C2 | 0.3579 (6) | −0.0263 (3) | 0.2901 (3) | 0.0469 (8) | |
C3 | 0.3065 (7) | −0.1382 (3) | 0.1929 (3) | 0.0605 (10) | |
H3A | 0.1755 | −0.2078 | 0.1850 | 0.073* | |
C4 | 0.4508 (7) | −0.1461 (3) | 0.1075 (3) | 0.0659 (11) | |
H4A | 0.4174 | −0.2212 | 0.0421 | 0.079* | |
C5 | 0.6418 (7) | −0.0437 (3) | 0.1192 (3) | 0.0537 (9) | |
H5A | 0.7389 | −0.0505 | 0.0616 | 0.064* | |
C6 | 0.6948 (6) | 0.0696 (3) | 0.2142 (3) | 0.0461 (8) | |
C7 | 0.5508 (6) | 0.0785 (3) | 0.3021 (3) | 0.0472 (8) | |
H7A | 0.5847 | 0.1537 | 0.3675 | 0.057* | |
O1 | 0.0350 (5) | −0.1160 (2) | 0.3720 (2) | 0.0663 (8) | |
O2 | 0.2431 (5) | 0.0872 (2) | 0.4652 (2) | 0.0699 (8) | |
H2 | 0.1331 | 0.0870 | 0.5202 | 0.105* | |
N1 | 0.868 (3) | 0.1754 (14) | 0.215 (2) | 0.038 (3) | 0.550 (14) |
C8 | 0.997 (2) | 0.2711 (10) | 0.3133 (11) | 0.051 (3) | 0.550 (14) |
H8A | 0.9624 | 0.2715 | 0.3861 | 0.061* | 0.550 (14) |
C9 | 1.192 (2) | 0.3752 (9) | 0.3088 (10) | 0.054 (4) | 0.550 (14) |
C10 | 1.307 (8) | 0.363 (2) | 0.213 (3) | 0.044 (5) | 0.550 (14) |
C11 | 1.473 (4) | 0.4714 (14) | 0.2060 (17) | 0.058 (5) | 0.550 (14) |
C12 | 1.552 (7) | 0.5805 (19) | 0.305 (3) | 0.062 (6) | 0.550 (14) |
H12A | 1.6724 | 0.6497 | 0.3034 | 0.075* | 0.550 (14) |
C13 | 1.459 (2) | 0.5914 (9) | 0.4063 (10) | 0.075 (3) | 0.550 (14) |
H13A | 1.5152 | 0.6665 | 0.4722 | 0.090* | 0.550 (14) |
C14 | 1.281 (2) | 0.4882 (9) | 0.4072 (9) | 0.073 (3) | 0.550 (14) |
H14A | 1.2184 | 0.4940 | 0.4752 | 0.088* | 0.550 (14) |
C15 | 1.752 (2) | 0.5546 (13) | 0.0982 (14) | 0.080 (4) | 0.550 (14) |
H15A | 1.8146 | 0.5250 | 0.0272 | 0.121* | 0.550 (14) |
H15B | 1.8972 | 0.5807 | 0.1667 | 0.121* | 0.550 (14) |
H15C | 1.6696 | 0.6273 | 0.0964 | 0.121* | 0.550 (14) |
O3 | 1.207 (2) | 0.2641 (12) | 0.1078 (10) | 0.065 (3) | 0.550 (14) |
H3 | 1.0896 | 0.2127 | 0.1154 | 0.097* | 0.550 (14) |
O4 | 1.565 (2) | 0.4519 (10) | 0.1044 (8) | 0.080 (3) | 0.550 (14) |
N1A | 0.929 (4) | 0.1671 (17) | 0.222 (3) | 0.038 (3) | 0.450 (14) |
C8A | 0.922 (2) | 0.2889 (10) | 0.2830 (11) | 0.038 (3) | 0.450 (14) |
H8AA | 0.7868 | 0.3062 | 0.3209 | 0.045* | 0.450 (14) |
C9A | 1.128 (3) | 0.3943 (10) | 0.2899 (12) | 0.044 (3) | 0.450 (14) |
C10A | 1.287 (10) | 0.374 (2) | 0.210 (4) | 0.041 (4) | 0.450 (14) |
C11A | 1.503 (5) | 0.4729 (15) | 0.2231 (19) | 0.044 (3) | 0.450 (14) |
C12A | 1.521 (9) | 0.595 (2) | 0.300 (3) | 0.062 (5) | 0.450 (14) |
H12B | 1.6540 | 0.6625 | 0.3042 | 0.074* | 0.450 (14) |
C13A | 1.344 (3) | 0.6185 (9) | 0.3695 (10) | 0.061 (3) | 0.450 (14) |
H13B | 1.3546 | 0.7023 | 0.4197 | 0.073* | 0.450 (14) |
C14A | 1.151 (2) | 0.5199 (7) | 0.3662 (9) | 0.057 (3) | 0.450 (14) |
H14B | 1.0346 | 0.5371 | 0.4153 | 0.068* | 0.450 (14) |
C15A | 1.854 (3) | 0.5432 (16) | 0.1425 (16) | 0.077 (4) | 0.450 (14) |
H15D | 1.9220 | 0.5133 | 0.0732 | 0.115* | 0.450 (14) |
H15E | 1.9947 | 0.5697 | 0.2127 | 0.115* | 0.450 (14) |
H15F | 1.7723 | 0.6156 | 0.1387 | 0.115* | 0.450 (14) |
O3A | 1.295 (3) | 0.2529 (14) | 0.1380 (15) | 0.062 (4) | 0.450 (14) |
H3B | 1.1719 | 0.1997 | 0.1393 | 0.093* | 0.450 (14) |
O4A | 1.661 (2) | 0.4394 (11) | 0.1466 (11) | 0.062 (3) | 0.450 (14) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.049 (2) | 0.0358 (17) | 0.064 (2) | −0.0037 (15) | 0.0263 (17) | 0.0113 (16) |
C2 | 0.0416 (18) | 0.0415 (17) | 0.061 (2) | 0.0011 (15) | 0.0226 (16) | 0.0186 (16) |
C3 | 0.058 (2) | 0.0408 (18) | 0.076 (2) | −0.0084 (16) | 0.029 (2) | 0.0086 (17) |
C4 | 0.074 (3) | 0.0459 (19) | 0.069 (2) | −0.0080 (18) | 0.035 (2) | 0.0019 (17) |
C5 | 0.054 (2) | 0.0481 (19) | 0.054 (2) | −0.0007 (16) | 0.0273 (17) | 0.0053 (16) |
C6 | 0.0400 (18) | 0.0430 (17) | 0.057 (2) | 0.0004 (14) | 0.0226 (16) | 0.0162 (15) |
C7 | 0.0413 (18) | 0.0389 (17) | 0.059 (2) | −0.0023 (14) | 0.0248 (16) | 0.0097 (15) |
O1 | 0.0638 (16) | 0.0449 (13) | 0.0852 (18) | −0.0150 (11) | 0.0389 (14) | 0.0117 (12) |
O2 | 0.0772 (18) | 0.0519 (15) | 0.0748 (18) | −0.0139 (13) | 0.0489 (14) | 0.0046 (13) |
N1 | 0.017 (7) | 0.044 (2) | 0.053 (3) | 0.003 (3) | 0.015 (5) | 0.013 (2) |
C8 | 0.045 (6) | 0.055 (5) | 0.046 (5) | −0.002 (4) | 0.012 (4) | 0.010 (4) |
C9 | 0.048 (6) | 0.050 (4) | 0.057 (5) | 0.001 (4) | 0.025 (5) | 0.003 (4) |
C10 | 0.038 (8) | 0.038 (6) | 0.047 (5) | −0.002 (6) | 0.014 (5) | 0.002 (5) |
C11 | 0.038 (6) | 0.054 (5) | 0.065 (7) | −0.007 (5) | 0.025 (6) | −0.004 (5) |
C12 | 0.045 (8) | 0.051 (7) | 0.080 (7) | −0.014 (7) | 0.027 (6) | 0.007 (6) |
C13 | 0.058 (6) | 0.057 (5) | 0.082 (6) | −0.015 (4) | 0.037 (5) | −0.018 (4) |
C14 | 0.063 (6) | 0.068 (5) | 0.070 (5) | −0.015 (4) | 0.038 (5) | −0.005 (4) |
C15 | 0.057 (7) | 0.079 (6) | 0.105 (10) | −0.012 (5) | 0.043 (7) | 0.027 (6) |
O3 | 0.057 (7) | 0.052 (5) | 0.067 (5) | −0.018 (4) | 0.037 (5) | −0.009 (4) |
O4 | 0.073 (6) | 0.073 (4) | 0.075 (5) | −0.030 (4) | 0.040 (4) | 0.004 (4) |
N1A | 0.017 (7) | 0.044 (2) | 0.053 (3) | 0.003 (3) | 0.015 (5) | 0.013 (2) |
C8A | 0.027 (5) | 0.042 (4) | 0.047 (7) | 0.008 (3) | 0.021 (4) | 0.010 (4) |
C9A | 0.040 (6) | 0.034 (4) | 0.057 (6) | 0.000 (4) | 0.020 (5) | 0.013 (4) |
C10A | 0.030 (7) | 0.033 (5) | 0.062 (8) | 0.004 (5) | 0.021 (6) | 0.013 (5) |
C11A | 0.042 (7) | 0.042 (5) | 0.054 (7) | 0.001 (4) | 0.017 (5) | 0.023 (5) |
C12A | 0.055 (10) | 0.044 (6) | 0.077 (8) | −0.006 (6) | 0.020 (7) | 0.009 (6) |
C13A | 0.071 (7) | 0.036 (4) | 0.066 (6) | −0.004 (4) | 0.022 (5) | 0.005 (4) |
C14A | 0.060 (6) | 0.039 (4) | 0.070 (6) | 0.006 (4) | 0.028 (5) | 0.010 (4) |
C15A | 0.067 (9) | 0.069 (7) | 0.099 (11) | −0.017 (7) | 0.035 (7) | 0.039 (7) |
O3A | 0.059 (8) | 0.038 (4) | 0.084 (8) | −0.002 (5) | 0.041 (6) | 0.002 (5) |
O4A | 0.050 (5) | 0.064 (4) | 0.076 (7) | −0.009 (4) | 0.039 (5) | 0.024 (4) |
C1—O2 | 1.232 (4) | C13—C14 | 1.378 (9) |
C1—O1 | 1.284 (4) | C13—H13A | 0.9300 |
C1—C2 | 1.482 (5) | C14—H14A | 0.9300 |
C2—C3 | 1.382 (4) | C15—O4 | 1.426 (9) |
C2—C7 | 1.385 (4) | C15—H15A | 0.9600 |
C3—C4 | 1.382 (5) | C15—H15B | 0.9600 |
C3—H3A | 0.9300 | C15—H15C | 0.9600 |
C4—C5 | 1.361 (4) | O3—H3 | 0.8200 |
C4—H4A | 0.9300 | N1A—C8A | 1.333 (13) |
C5—C6 | 1.376 (4) | C8A—C9A | 1.450 (10) |
C5—H5A | 0.9300 | C8A—H8AA | 0.9300 |
C6—N1 | 1.38 (2) | C9A—C10A | 1.382 (12) |
C6—C7 | 1.405 (4) | C9A—C14A | 1.391 (10) |
C6—N1A | 1.49 (3) | C10A—O3A | 1.368 (19) |
C7—H7A | 0.9300 | C10A—C11A | 1.419 (14) |
O2—H2 | 0.9612 | C11A—O4A | 1.362 (12) |
N1—C8 | 1.329 (13) | C11A—C12A | 1.367 (16) |
C8—C9 | 1.454 (9) | C12A—C13A | 1.374 (17) |
C8—H8A | 0.9300 | C12A—H12B | 0.9300 |
C9—C10 | 1.383 (11) | C13A—C14A | 1.370 (10) |
C9—C14 | 1.395 (9) | C13A—H13B | 0.9300 |
C10—O3 | 1.365 (18) | C14A—H14B | 0.9300 |
C10—C11 | 1.418 (13) | C15A—O4A | 1.443 (10) |
C11—C12 | 1.370 (15) | C15A—H15D | 0.9600 |
C11—O4 | 1.373 (11) | C15A—H15E | 0.9600 |
C12—C13 | 1.384 (16) | C15A—H15F | 0.9600 |
C12—H12A | 0.9300 | O3A—H3B | 0.8200 |
O2—C1—O1 | 122.7 (3) | C11—C12—H12A | 118.8 |
O2—C1—C2 | 119.7 (3) | C13—C12—H12A | 118.8 |
O1—C1—C2 | 117.6 (3) | C14—C13—C12 | 118.3 (8) |
C3—C2—C7 | 120.6 (3) | C14—C13—H13A | 120.9 |
C3—C2—C1 | 120.5 (3) | C12—C13—H13A | 120.9 |
C7—C2—C1 | 118.9 (3) | C13—C14—C9 | 121.8 (7) |
C2—C3—C4 | 119.7 (3) | C13—C14—H14A | 119.1 |
C2—C3—H3A | 120.2 | C9—C14—H14A | 119.1 |
C4—C3—H3A | 120.2 | C11—O4—C15 | 118.0 (9) |
C5—C4—C3 | 120.0 (3) | C8A—N1A—C6 | 113.9 (18) |
C5—C4—H4A | 120.0 | N1A—C8A—C9A | 119.6 (14) |
C3—C4—H4A | 120.0 | N1A—C8A—H8AA | 120.2 |
C4—C5—C6 | 121.7 (3) | C9A—C8A—H8AA | 120.2 |
C4—C5—H5A | 119.2 | C10A—C9A—C14A | 118.6 (10) |
C6—C5—H5A | 119.2 | C10A—C9A—C8A | 119.5 (9) |
C5—C6—N1 | 119.2 (10) | C14A—C9A—C8A | 121.5 (10) |
C5—C6—C7 | 118.9 (3) | O3A—C10A—C9A | 123.2 (14) |
N1—C6—C7 | 121.5 (9) | O3A—C10A—C11A | 115 (2) |
C5—C6—N1A | 115.4 (10) | C9A—C10A—C11A | 119.5 (10) |
N1—C6—N1A | 13.2 (17) | O4A—C11A—C12A | 125.1 (11) |
C7—C6—N1A | 125.2 (11) | O4A—C11A—C10A | 115.2 (10) |
C2—C7—C6 | 119.2 (3) | C12A—C11A—C10A | 119.3 (16) |
C2—C7—H7A | 120.4 | C11A—C12A—C13A | 120.0 (13) |
C6—C7—H7A | 120.4 | C11A—C12A—H12B | 120.0 |
C1—O2—H2 | 114.7 | C13A—C12A—H12B | 120.0 |
C8—N1—C6 | 123 (2) | C14A—C13A—C12A | 120.9 (10) |
N1—C8—C9 | 120.7 (14) | C14A—C13A—H13B | 119.5 |
N1—C8—H8A | 119.6 | C12A—C13A—H13B | 119.5 |
C9—C8—H8A | 119.6 | C13A—C14A—C9A | 120.4 (9) |
C10—C9—C14 | 118.3 (8) | C13A—C14A—H14B | 119.8 |
C10—C9—C8 | 122.2 (8) | C9A—C14A—H14B | 119.8 |
C14—C9—C8 | 119.4 (8) | O4A—C15A—H15D | 109.5 |
O3—C10—C9 | 121.7 (12) | O4A—C15A—H15E | 109.5 |
O3—C10—C11 | 115.0 (19) | H15D—C15A—H15E | 109.5 |
C9—C10—C11 | 120.3 (8) | O4A—C15A—H15F | 109.5 |
C12—C11—O4 | 125.4 (9) | H15D—C15A—H15F | 109.5 |
C12—C11—C10 | 118.0 (14) | H15E—C15A—H15F | 109.5 |
O4—C11—C10 | 116.1 (9) | C10A—O3A—H3B | 109.5 |
C11—C12—C13 | 122.4 (10) | C11A—O4A—C15A | 116.8 (11) |
O2—C1—C2—C3 | −176.1 (3) | O4—C11—C12—C13 | −177 (3) |
O1—C1—C2—C3 | 3.8 (5) | C10—C11—C12—C13 | −5 (7) |
O2—C1—C2—C7 | 3.1 (5) | C11—C12—C13—C14 | 0 (5) |
O1—C1—C2—C7 | −177.1 (3) | C12—C13—C14—C9 | −1 (3) |
C7—C2—C3—C4 | 0.6 (5) | C10—C9—C14—C13 | 7 (3) |
C1—C2—C3—C4 | 179.8 (3) | C8—C9—C14—C13 | −177.9 (9) |
C2—C3—C4—C5 | −0.2 (6) | C12—C11—O4—C15 | −2 (4) |
C3—C4—C5—C6 | −0.7 (6) | C10—C11—O4—C15 | −174 (3) |
C4—C5—C6—N1 | −172.3 (11) | C5—C6—N1A—C8A | 156.3 (18) |
C4—C5—C6—C7 | 1.2 (5) | N1—C6—N1A—C8A | 46 (7) |
C4—C5—C6—N1A | 173.4 (14) | C7—C6—N1A—C8A | −32 (3) |
C3—C2—C7—C6 | −0.1 (5) | C6—N1A—C8A—C9A | −175.4 (16) |
C1—C2—C7—C6 | −179.3 (3) | N1A—C8A—C9A—C10A | 17 (4) |
C5—C6—C7—C2 | −0.7 (5) | N1A—C8A—C9A—C14A | −170.5 (19) |
N1—C6—C7—C2 | 172.6 (11) | C14A—C9A—C10A—O3A | 175 (4) |
N1A—C6—C7—C2 | −172.2 (14) | C8A—C9A—C10A—O3A | −13 (7) |
C5—C6—N1—C8 | −157.2 (13) | C14A—C9A—C10A—C11A | 13 (7) |
C7—C6—N1—C8 | 29 (2) | C8A—C9A—C10A—C11A | −174 (4) |
N1A—C6—N1—C8 | −81 (10) | O3A—C10A—C11A—O4A | 11 (6) |
C6—N1—C8—C9 | 175.3 (12) | C9A—C10A—C11A—O4A | 174 (4) |
N1—C8—C9—C10 | −19 (3) | O3A—C10A—C11A—C12A | −176 (4) |
N1—C8—C9—C14 | 165.7 (13) | C9A—C10A—C11A—C12A | −13 (8) |
C14—C9—C10—O3 | −171 (3) | O4A—C11A—C12A—C13A | 177 (3) |
C8—C9—C10—O3 | 14 (5) | C10A—C11A—C12A—C13A | 5 (8) |
C14—C9—C10—C11 | −12 (5) | C11A—C12A—C13A—C14A | 2 (7) |
C8—C9—C10—C11 | 173 (3) | C12A—C13A—C14A—C9A | −1 (3) |
O3—C10—C11—C12 | 172 (4) | C10A—C9A—C14A—C13A | −6 (4) |
C9—C10—C11—C12 | 11 (7) | C8A—C9A—C14A—C13A | −178.7 (11) |
O3—C10—C11—O4 | −16 (5) | C12A—C11A—O4A—C15A | −3 (5) |
C9—C10—C11—O4 | −176 (3) | C10A—C11A—O4A—C15A | 169 (4) |
Cg1 and Cg2 are the centroids of the C9–C14 and C9A–C14A rings, respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2···O1i | 0.96 | 1.69 | 2.638 (4) | 169 |
O3—H3···N1 | 0.82 | 1.92 | 2.64 (2) | 147 |
C15A—H15E···Cg1ii | 0.96 | 2.90 | 3.757 (11) | 139 |
C15A—H15E···Cg2ii | 0.96 | 2.83 | 3.680 (12) | 139 |
Symmetry codes: (i) −x, −y, −z+1; (ii) x+1, y, z. |
Experimental details
Crystal data | |
Chemical formula | C15H13NO4 |
Mr | 271.26 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 296 |
a, b, c (Å) | 5.2738 (9), 10.978 (2), 12.084 (2) |
α, β, γ (°) | 107.044 (10), 100.776 (11), 97.539 (10) |
V (Å3) | 644.1 (2) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.19 × 0.12 × 0.09 |
Data collection | |
Diffractometer | Bruker SMART APEXII CCD area-detector |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.981, 0.991 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 8775, 2308, 1253 |
Rint | 0.047 |
(sin θ/λ)max (Å−1) | 0.600 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.081, 0.258, 1.05 |
No. of reflections | 2308 |
No. of parameters | 279 |
No. of restraints | 405 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.59, −0.28 |
Computer programs: APEX2 (Bruker, 2005), SAINT (Bruker, 2005), SHELXTL (Sheldrick, 2008) and PLATON (Spek, 2009).
Cg1 and Cg2 are the centroids of the C9–C14 and C9A–C14A rings, respectively. |
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2···O1i | 0.96 | 1.69 | 2.638 (4) | 169 |
O3—H3···N1 | 0.82 | 1.92 | 2.64 (2) | 147 |
C15A—H15E···Cg1ii | 0.96 | 2.90 | 3.757 (11) | 139 |
C15A—H15E···Cg2ii | 0.96 | 2.83 | 3.680 (12) | 139 |
Symmetry codes: (i) −x, −y, −z+1; (ii) x+1, y, z. |
Acknowledgements
HK thanks PNU for financial support. MNT thanks GC University of Sargodha, Pakistan, for the research facility.
References
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Bernstein, J., Davis, R. E., Shimoni, L. & Chang, N.-L. (1995). Angew. Chem. Int. Ed. Engl. 34, 1555–1573. CrossRef CAS Web of Science Google Scholar
Bruker (2005). APEX2, SAINT and SADABS. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Kargar, H., Kia, R., Abbasian, S. & Tahir, M. N. (2012). Acta Cryst. E68, m182. Web of Science CSD CrossRef IUCr Journals Google Scholar
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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.
In continuation of our work on the crystal structure of Schiff base ligands (Kargar et al., 2011; Kia et al., 2010; Kargar et al., 2012), we determined the X-ray structure of the title compound.
The asymmetric unit of the title compound, Fig. 1, comprises a potentially bidentate N,O-donor Schiff base ligand. The bond lengths (Allen et al., 1987) and angles are within the normal ranges.
The intramolecular O—H···N hydrogen bonds make S(6) ring motifs (Bernstein et al., 1995). The dihedral angle between the substituted benzene rings is 9.9 (8)°. Pairs of the centrosymmetric intermolecular O—H···O hydrogen bonds link molecules into dimers with R22(8) ring motifs (Fig. 2). A part of the molecule was disordered over two positions with a refined site occupancy ratio 0.55 (1)/0.45 (1). The crystal packing was further stabilized by the intermolecular C—H···π interactions (Table 2).