organic compounds
of 4-benzamido-2-hydroxybenzoic acid
aDepartment of Chemistry, University of the Punjab, Lahore, Punjab, Pakistan, bDepartment of Chemistry, Mirpur University of Science and Technology (MUST), Mirpur, Azad Jammu and Kashmir, Pakistan, and cDepartment of Physics, University of Sargodha, Sargodha, Punjab, Pakistan
*Correspondence e-mail: dmntahir_uos@yahoo.com
In the title compound, C14H11NO4, the dihedral angle between the mean planes of the aromatic rings is 3.96 (12)° and an intramolecular O—H⋯O hydrogen bond closes an S(6) ring. A short intramolecular C—H⋯O contact is also seen. In the crystal, carboxylic acid inversion dimers linked by pairs of O—H⋯O hydrogen bonds generate R22(8) loops. Conversely, the N—H group does not form a hydrogen bond. Aromatic π–π interactions exist at a centroid–centroid distance of 3.8423 (15) Å between the benzene rings. An extremely weak C—H⋯π interaction also is present.
Keywords: crystal structure; hydrogen bonding; π–π interactions.
CCDC reference: 1400009
1. Related literature
For related structures, see: Gibson et al. (2010); Júnior et al. (2013); Montis & Hursthouse (2012).
2. Experimental
2.1. Crystal data
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2.3. Refinement
|
Data collection: APEX2 (Bruker, 2007); cell SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 2012) and PLATON.
Supporting information
CCDC reference: 1400009
10.1107/S2056989015009032/hb7423sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S2056989015009032/hb7423Isup2.hkl
Supporting information file. DOI: 10.1107/S2056989015009032/hb7423Isup3.cml
4-Aminosalicylic acid was dissolved in ethylacetate and equimolar benzoyl chloride was added to the solution under stirring. The mixture was stired for 5 h. Light orange plates were obtained after 48 h.
The H atoms were positioned geometrically (C–H = 0.93 Å, N—H= 0.86 Å, O—H= 0.82 Å) and refined as riding with Uiso(H) = xUeq (C, N, O), where x = 1.5 for hydroxy and x = 1.2 for other H-atoms.
Data collection: APEX2 (Bruker, 2007); cell
SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL2014 (Sheldrick, 2015); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 2012) and PLATON (Spek, 2009).Fig. 1. View of the title compound with displacement ellipsoids drawn at the 50% probability level. The dotted line show intramolecular H-bonding. | |
Fig. 2. The partial packing, which shows that molecules form dimers and which are interlinked with each othere. |
C14H11NO4 | F(000) = 536 |
Mr = 257.24 | Dx = 1.457 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
a = 5.6689 (5) Å | Cell parameters from 1602 reflections |
b = 32.039 (3) Å | θ = 3.2–27.1° |
c = 6.6413 (5) Å | µ = 0.11 mm−1 |
β = 103.530 (5)° | T = 296 K |
V = 1172.74 (18) Å3 | Plate, light orange |
Z = 4 | 0.38 × 0.30 × 0.16 mm |
Bruker Kappa APEXII CCD diffractometer | 2582 independent reflections |
Radiation source: fine-focus sealed tube | 1602 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.044 |
Detector resolution: 7.70 pixels mm-1 | θmax = 27.1°, θmin = 3.2° |
ω scans | h = −7→7 |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | k = −41→24 |
Tmin = 0.960, Tmax = 0.984 | l = −8→8 |
9560 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)] = 0.057 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.147 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.062P)2 + 0.2313P] where P = (Fo2 + 2Fc2)/3 |
2582 reflections | (Δ/σ)max < 0.001 |
174 parameters | Δρmax = 0.20 e Å−3 |
0 restraints | Δρmin = −0.22 e Å−3 |
C14H11NO4 | V = 1172.74 (18) Å3 |
Mr = 257.24 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 5.6689 (5) Å | µ = 0.11 mm−1 |
b = 32.039 (3) Å | T = 296 K |
c = 6.6413 (5) Å | 0.38 × 0.30 × 0.16 mm |
β = 103.530 (5)° |
Bruker Kappa APEXII CCD diffractometer | 2582 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 1602 reflections with I > 2σ(I) |
Tmin = 0.960, Tmax = 0.984 | Rint = 0.044 |
9560 measured reflections |
R[F2 > 2σ(F2)] = 0.057 | 0 restraints |
wR(F2) = 0.147 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.20 e Å−3 |
2582 reflections | Δρmin = −0.22 e Å−3 |
174 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 | ||
O1 | 0.7252 (3) | 0.01068 (6) | −0.2615 (2) | 0.0515 (5) | |
H1 | 0.6964 | −0.0023 | −0.3708 | 0.077* | |
O2 | 0.3434 (3) | 0.03147 (5) | −0.3868 (2) | 0.0478 (4) | |
O3 | 0.1427 (3) | 0.08122 (6) | −0.1660 (2) | 0.0554 (5) | |
H3 | 0.1498 | 0.0670 | −0.2670 | 0.083* | |
O4 | 0.2383 (3) | 0.14573 (7) | 0.4823 (3) | 0.0723 (6) | |
N1 | 0.6221 (3) | 0.12432 (6) | 0.4934 (2) | 0.0457 (5) | |
H1A | 0.7682 | 0.1253 | 0.5677 | 0.055* | |
C1 | 0.5318 (4) | 0.03152 (7) | −0.2456 (3) | 0.0379 (5) | |
C2 | 0.5512 (4) | 0.05479 (7) | −0.0538 (3) | 0.0339 (5) | |
C3 | 0.3563 (4) | 0.07877 (7) | −0.0233 (3) | 0.0367 (5) | |
C4 | 0.3735 (4) | 0.10154 (7) | 0.1581 (3) | 0.0415 (6) | |
H4 | 0.2419 | 0.1170 | 0.1775 | 0.050* | |
C5 | 0.5876 (4) | 0.10094 (7) | 0.3091 (3) | 0.0378 (5) | |
C6 | 0.7835 (4) | 0.07703 (8) | 0.2805 (3) | 0.0439 (6) | |
H6 | 0.9273 | 0.0766 | 0.3826 | 0.053* | |
C7 | 0.7651 (4) | 0.05425 (7) | 0.1036 (3) | 0.0416 (6) | |
H7 | 0.8959 | 0.0382 | 0.0873 | 0.050* | |
C8 | 0.4525 (4) | 0.14561 (8) | 0.5685 (3) | 0.0449 (6) | |
C9 | 0.5423 (4) | 0.16900 (7) | 0.7674 (3) | 0.0417 (6) | |
C10 | 0.7710 (5) | 0.16503 (9) | 0.8943 (3) | 0.0550 (7) | |
H10 | 0.8831 | 0.1472 | 0.8569 | 0.066* | |
C11 | 0.8349 (5) | 0.18742 (9) | 1.0775 (4) | 0.0620 (8) | |
H11 | 0.9896 | 0.1846 | 1.1626 | 0.074* | |
C12 | 0.6713 (6) | 0.21360 (9) | 1.1334 (4) | 0.0639 (8) | |
H12 | 0.7149 | 0.2287 | 1.2561 | 0.077* | |
C13 | 0.4429 (5) | 0.21765 (9) | 1.0090 (4) | 0.0648 (8) | |
H13 | 0.3319 | 0.2356 | 1.0473 | 0.078* | |
C14 | 0.3771 (5) | 0.19531 (8) | 0.8274 (4) | 0.0533 (7) | |
H14 | 0.2210 | 0.1979 | 0.7446 | 0.064* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0514 (10) | 0.0617 (12) | 0.0387 (9) | 0.0102 (9) | 0.0050 (7) | −0.0200 (8) |
O2 | 0.0507 (9) | 0.0585 (11) | 0.0312 (8) | 0.0042 (8) | 0.0034 (7) | −0.0140 (7) |
O3 | 0.0487 (10) | 0.0754 (14) | 0.0379 (9) | 0.0111 (9) | 0.0016 (7) | −0.0185 (8) |
O4 | 0.0574 (12) | 0.1049 (18) | 0.0502 (10) | 0.0122 (11) | 0.0037 (8) | −0.0290 (10) |
N1 | 0.0492 (11) | 0.0537 (13) | 0.0324 (9) | −0.0019 (10) | 0.0059 (8) | −0.0152 (9) |
C1 | 0.0473 (13) | 0.0353 (13) | 0.0319 (10) | −0.0030 (11) | 0.0111 (9) | −0.0027 (9) |
C2 | 0.0411 (12) | 0.0335 (13) | 0.0275 (10) | −0.0052 (10) | 0.0090 (8) | −0.0033 (8) |
C3 | 0.0414 (12) | 0.0412 (14) | 0.0271 (10) | −0.0043 (10) | 0.0072 (8) | −0.0029 (9) |
C4 | 0.0461 (13) | 0.0452 (15) | 0.0346 (11) | −0.0001 (11) | 0.0120 (9) | −0.0068 (10) |
C5 | 0.0511 (13) | 0.0366 (14) | 0.0276 (10) | −0.0068 (11) | 0.0133 (9) | −0.0064 (9) |
C6 | 0.0442 (13) | 0.0548 (16) | 0.0298 (11) | 0.0008 (12) | 0.0031 (9) | −0.0073 (10) |
C7 | 0.0440 (13) | 0.0462 (15) | 0.0345 (11) | 0.0025 (11) | 0.0090 (9) | −0.0057 (10) |
C8 | 0.0515 (15) | 0.0474 (16) | 0.0347 (11) | 0.0022 (12) | 0.0079 (10) | −0.0041 (10) |
C9 | 0.0570 (14) | 0.0368 (14) | 0.0323 (11) | −0.0025 (11) | 0.0124 (10) | −0.0026 (9) |
C10 | 0.0643 (16) | 0.0577 (17) | 0.0404 (13) | 0.0090 (13) | 0.0070 (11) | −0.0099 (11) |
C11 | 0.0696 (18) | 0.066 (2) | 0.0430 (14) | 0.0040 (15) | −0.0008 (12) | −0.0123 (13) |
C12 | 0.089 (2) | 0.0590 (19) | 0.0442 (14) | −0.0075 (16) | 0.0173 (14) | −0.0202 (12) |
C13 | 0.0700 (18) | 0.064 (2) | 0.0639 (17) | 0.0005 (15) | 0.0223 (14) | −0.0274 (14) |
C14 | 0.0570 (15) | 0.0515 (17) | 0.0525 (14) | −0.0018 (13) | 0.0152 (11) | −0.0103 (12) |
O1—C1 | 1.309 (3) | C6—C7 | 1.366 (3) |
O1—H1 | 0.8200 | C6—H6 | 0.9300 |
O2—C1 | 1.245 (2) | C7—H7 | 0.9300 |
O3—C3 | 1.354 (2) | C8—C9 | 1.501 (3) |
O3—H3 | 0.8200 | C9—C10 | 1.377 (3) |
O4—C8 | 1.215 (3) | C9—C14 | 1.386 (3) |
N1—C8 | 1.365 (3) | C10—C11 | 1.386 (3) |
N1—C5 | 1.409 (2) | C10—H10 | 0.9300 |
N1—H1A | 0.8600 | C11—C12 | 1.365 (4) |
C1—C2 | 1.458 (3) | C11—H11 | 0.9300 |
C2—C3 | 1.399 (3) | C12—C13 | 1.369 (4) |
C2—C7 | 1.404 (3) | C12—H12 | 0.9300 |
C3—C4 | 1.392 (3) | C13—C14 | 1.377 (3) |
C4—C5 | 1.382 (3) | C13—H13 | 0.9300 |
C4—H4 | 0.9300 | C14—H14 | 0.9300 |
C5—C6 | 1.398 (3) | ||
C1—O1—H1 | 109.5 | C6—C7—H7 | 119.6 |
C3—O3—H3 | 109.5 | C2—C7—H7 | 119.6 |
C8—N1—C5 | 128.08 (19) | O4—C8—N1 | 122.7 (2) |
C8—N1—H1A | 116.0 | O4—C8—C9 | 120.6 (2) |
C5—N1—H1A | 116.0 | N1—C8—C9 | 116.6 (2) |
O2—C1—O1 | 121.71 (18) | C10—C9—C14 | 118.9 (2) |
O2—C1—C2 | 122.3 (2) | C10—C9—C8 | 124.8 (2) |
O1—C1—C2 | 115.96 (18) | C14—C9—C8 | 116.4 (2) |
C3—C2—C7 | 118.20 (18) | C9—C10—C11 | 120.3 (2) |
C3—C2—C1 | 120.46 (18) | C9—C10—H10 | 119.8 |
C7—C2—C1 | 121.3 (2) | C11—C10—H10 | 119.8 |
O3—C3—C4 | 116.45 (19) | C12—C11—C10 | 120.1 (2) |
O3—C3—C2 | 122.51 (17) | C12—C11—H11 | 119.9 |
C4—C3—C2 | 121.04 (18) | C10—C11—H11 | 119.9 |
C5—C4—C3 | 119.5 (2) | C11—C12—C13 | 120.1 (2) |
C5—C4—H4 | 120.3 | C11—C12—H12 | 120.0 |
C3—C4—H4 | 120.3 | C13—C12—H12 | 120.0 |
C4—C5—C6 | 119.99 (18) | C12—C13—C14 | 120.2 (3) |
C4—C5—N1 | 122.9 (2) | C12—C13—H13 | 119.9 |
C6—C5—N1 | 117.12 (19) | C14—C13—H13 | 119.9 |
C7—C6—C5 | 120.4 (2) | C13—C14—C9 | 120.4 (2) |
C7—C6—H6 | 119.8 | C13—C14—H14 | 119.8 |
C5—C6—H6 | 119.8 | C9—C14—H14 | 119.8 |
C6—C7—C2 | 120.9 (2) | ||
O2—C1—C2—C3 | −1.0 (3) | C3—C2—C7—C6 | −0.9 (3) |
O1—C1—C2—C3 | 178.68 (19) | C1—C2—C7—C6 | 178.3 (2) |
O2—C1—C2—C7 | 179.8 (2) | C5—N1—C8—O4 | 2.4 (4) |
O1—C1—C2—C7 | −0.5 (3) | C5—N1—C8—C9 | −178.3 (2) |
C7—C2—C3—O3 | −179.9 (2) | O4—C8—C9—C10 | 168.2 (2) |
C1—C2—C3—O3 | 0.8 (3) | N1—C8—C9—C10 | −11.1 (4) |
C7—C2—C3—C4 | 0.0 (3) | O4—C8—C9—C14 | −9.7 (3) |
C1—C2—C3—C4 | −179.2 (2) | N1—C8—C9—C14 | 171.0 (2) |
O3—C3—C4—C5 | −179.1 (2) | C14—C9—C10—C11 | −0.8 (4) |
C2—C3—C4—C5 | 1.0 (3) | C8—C9—C10—C11 | −178.6 (3) |
C3—C4—C5—C6 | −1.1 (3) | C9—C10—C11—C12 | 0.0 (4) |
C3—C4—C5—N1 | 177.6 (2) | C10—C11—C12—C13 | 0.4 (5) |
C8—N1—C5—C4 | 10.2 (4) | C11—C12—C13—C14 | 0.1 (5) |
C8—N1—C5—C6 | −171.0 (2) | C12—C13—C14—C9 | −0.9 (4) |
C4—C5—C6—C7 | 0.2 (3) | C10—C9—C14—C13 | 1.2 (4) |
N1—C5—C6—C7 | −178.6 (2) | C8—C9—C14—C13 | 179.3 (2) |
C5—C6—C7—C2 | 0.9 (4) |
Cg2 is the centroid of the C9–C14 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O2i | 0.82 | 1.83 | 2.6470 (19) | 176 |
O3—H3···O2 | 0.82 | 1.88 | 2.601 (2) | 146 |
C4—H4···O4 | 0.93 | 2.23 | 2.828 (3) | 122 |
C12—H12···Cg2ii | 0.93 | 2.95 | 3.773 (3) | 142 |
Symmetry codes: (i) −x+1, −y, −z−1; (ii) x, −y+1/2, z+1/2. |
Cg2 is the centroid of the C9–C14 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O2i | 0.82 | 1.83 | 2.6470 (19) | 176 |
O3—H3···O2 | 0.82 | 1.88 | 2.601 (2) | 146 |
C4—H4···O4 | 0.93 | 2.23 | 2.828 (3) | 122 |
C12—H12···Cg2ii | 0.93 | 2.95 | 3.773 (3) | 142 |
Symmetry codes: (i) −x+1, −y, −z−1; (ii) x, −y+1/2, z+1/2. |
Acknowledgements
The authors acknowledge the provision of funds for the purchase of the diffractometer and encouragement by Dr Muhammad Akram Chaudhary, Vice Chancellor, University of Sargodha, Pakistan.
References
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The crystal structures of methyl 4-(isonicotinoylamino)-2-methoxybenzoate (Gibson, 2010), 4-acetamido-2-hydroxybenzoic acid (Montis & Hursthouse, 2012) and 2-([(4-carboxy-3-hydroxyphenyl)iminiumyl]methyl)phenolate (Junior et al., 2013) have been published which are related to the title compound (I, Fig. 1). (I) is synthesized for the biological studies and for the complexation with different metals.
In (I), the parts of 4-aminosalicylic acid A (C1–C7/O1/O2/O3) and benzaldehyde B (C8—C14/O4) are planar with r. m. s. deviation of 0.0189 Å and 0.0524 Å, respectively. The dihedral angle between A/B is 5.86 (10)°. All heavy atoms of the compound form roughly a plane with r. m. s. devation of 0.0997 Å. In this plane the maximumu deviation is for O4-atom which is 0.321 (2) Å from the mean square plane. There exist intermolecular H-bonding of O—H···O type (Table 1, Fig. 2) forming S (6) loop. The molecules are dimerized due to inversion and O—H···O type of H-bonding (Table 1, Fig. 2) completing R22(8) rings motifs (Table 1, Fig. 2). The dimers are interlinked due to C—H···O interactions (Table 1, Fig. 2). There exist strong π–π interactions at a distance of 3.8423 (15) Å between the centeroids of Cg1—Cg2i and Cg2—Cg1ii [i = x, y, -1 + z: ii = x, y, 1 + z], where Cg1 and Cg2 are the centroids of benzene rings C (C2—C7) and D (C9—C14), respectively. There also exist a C—H···π interaction (Table 1) and may have important role in stabilizing the molecules.