organic compounds
5-Carboxy-2,4-dihydroxyanilinium chloride
aInstitute of Chemical Sciences, University of Peshawar, Peshawar, Pakistan, and bDepartment of Physics, University of Sargodha, Sargodha, Pakistan
*Correspondence e-mail: dmntahir_uos@yahoo.com
In the title salt, C7H8NO4+·Cl−, the organic group is planar with an r.m.s. deviation of 0.0265 Å. An S(6) ring motif is formed due to an intramolecular O—H⋯O hydrogen bond. The compound consists of dimers due to intermolecular O—H⋯O hydrogen bonds with an R22(8) ring motif. The dimers are interlinked through strong N—H⋯Cl and O—H⋯Cl hydrogen bonds, resulting in a three-dimensional polymeric network.
Related literature
For related structures, see: Bendjeddou et al. (2009); Dobson & Gerkin (1998). For graph-set notation, see: Bernstein et al. (1995).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2009); cell SAINT (Bruker, 2009); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON.
Supporting information
https://doi.org/10.1107/S1600536810033337/si2289sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810033337/si2289Isup2.hkl
Concentrated nitric acid (2 mL, 67%) was added drop by drop to β-resorcylic acid (1 g, 97%, 6.3 mmol) in a round bottom flask. The mixture was protected from moisture by CaCl2 (anhydrous) tube and was allowed to stand for 12 h at room temperature. Then the reaction mixture was diluted with water. The crude material was filtered and recrystallized from water to affoard the 5-nitro-β-resorcylic acid.
Then a mixture of 5-nitro-β-resorcylic acid (1.5 g, 7.5 mmol), tin (3 g, 25 mmol), concentrated hydrochloric acid (8 ml, 37%) and absolute ethanol (5 ml) were taken in a 100 ml round bottom flask and heated under reflux with stirring for 40 min. The completion of the reaction was monitored by TLC. The reaction mixture was filtered to remove any unreacted tin. The filtrate was kept for seven days to afford light green prisms of (I).
The coordinates of H-atoms of hydroxy groups were refined. The H-atoms were positioned geometrically (N—H = 0.89, C–H = 0.93 Å) and refined as riding with Uiso(H) = xUeq(C, N, O), where x = 1.2 for all H-atoms.
The title compound (I, Fig. 1) has been prepared for derivatization and for the synthesis of metallic complexes.
The
of (II) i.e., 5-ammoniosalicylic Acid chloride monohydrate (Dobson & Gerkin, 1998) and (III) i.e., bis(3-carboxyanilinum) bis(perchlorate) monohydrate (Bendjeddou et al., 2009) have been published which are related to the title compound.In (I), the organic group (C1—C7/O1—O4/N1) is planar with r. m. s. deviation of 0.0265 Å. There exist a strong intramolecular H-bond of O—H···O type (Table 1, Fig. 1) completing an S(6) ring motif (Bernstein et al., 1995) in the organic part. The title compound consists of dimers due to intermolecular H-bond of O—H···O type (Table 1, Fig. 2) completing R22(8) ring motif. The dimers are interlinked through strong H-bondings of N—H···Cl and O—H···Cl types (Table 1, Fig. 2) resulting in a three dimensional polymeric network.
For related structures, see: Bendjeddou et al. (2009); Dobson & Gerkin (1998). For graph-set notation, see: Bernstein et al. (1995).
Data collection: APEX2 (Bruker, 2009); cell
SAINT (Bruker, 2009); data reduction: SAINT (Bruker, 2009); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009); software used to prepare material for publication: WinGX (Farrugia, 1999) and PLATON (Spek, 2009).Fig. 1. View of the title compound with the atom numbering scheme. The displacement ellipsoids are drawn at the 50% probability level. H-atoms are shown as small spheres of arbitrary radii. The dotted line represents the intramolecular H-bonding. | |
Fig. 2. The partial packing (PLATON; Spek, 2009) which shows that molecules form dimers which are interlinked through H-bondings to form a three-dimensional polymeric network. |
C7H8NO4+·Cl− | F(000) = 424 |
Mr = 205.59 | Dx = 1.497 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 1108 reflections |
a = 5.0667 (3) Å | θ = 2.9–25.2° |
b = 28.4071 (13) Å | µ = 0.40 mm−1 |
c = 6.3966 (3) Å | T = 296 K |
β = 97.649 (3)° | Prism, light green |
V = 912.47 (8) Å3 | 0.28 × 0.18 × 0.16 mm |
Z = 4 |
Bruker Kappa APEXII CCD diffractometer | 1635 independent reflections |
Radiation source: fine-focus sealed tube | 1108 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.052 |
Detector resolution: 8.10 pixels mm-1 | θmax = 25.2°, θmin = 2.9° |
ω scans | h = −5→6 |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | k = −34→32 |
Tmin = 0.926, Tmax = 0.935 | l = −7→7 |
7094 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)] = 0.044 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.098 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.01 | w = 1/[σ2(Fo2) + (0.036P)2 + 0.4226P] where P = (Fo2 + 2Fc2)/3 |
1635 reflections | (Δ/σ)max < 0.001 |
128 parameters | Δρmax = 0.23 e Å−3 |
0 restraints | Δρmin = −0.22 e Å−3 |
C7H8NO4+·Cl− | V = 912.47 (8) Å3 |
Mr = 205.59 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 5.0667 (3) Å | µ = 0.40 mm−1 |
b = 28.4071 (13) Å | T = 296 K |
c = 6.3966 (3) Å | 0.28 × 0.18 × 0.16 mm |
β = 97.649 (3)° |
Bruker Kappa APEXII CCD diffractometer | 1635 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2005) | 1108 reflections with I > 2σ(I) |
Tmin = 0.926, Tmax = 0.935 | Rint = 0.052 |
7094 measured reflections |
R[F2 > 2σ(F2)] = 0.044 | 0 restraints |
wR(F2) = 0.098 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.01 | Δρmax = 0.23 e Å−3 |
1635 reflections | Δρmin = −0.22 e Å−3 |
128 parameters |
Geometry. Bond distances, angles etc. have been calculated using the rounded fractional coordinates. All su's are estimated from the variances of the (full) variance-covariance matrix. The cell e.s.d.'s are taken into account in the estimation of distances, angles and torsion angles |
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 | 0.8567 (5) | 0.05383 (8) | −0.1244 (4) | 0.0527 (8) | |
O2 | 0.7828 (4) | 0.01248 (8) | 0.1583 (3) | 0.0553 (8) | |
O3 | 0.4286 (5) | 0.04378 (8) | 0.3905 (4) | 0.0620 (10) | |
O4 | 0.0113 (4) | 0.18833 (7) | 0.1726 (3) | 0.0498 (8) | |
N1 | 0.2950 (5) | 0.19898 (8) | −0.1420 (4) | 0.0404 (8) | |
C1 | 0.7367 (6) | 0.04694 (11) | 0.0429 (5) | 0.0420 (11) | |
C2 | 0.5471 (5) | 0.08321 (10) | 0.0823 (4) | 0.0373 (10) | |
C3 | 0.4020 (6) | 0.08012 (10) | 0.2540 (5) | 0.0404 (10) | |
C4 | 0.2197 (6) | 0.11460 (10) | 0.2882 (5) | 0.0415 (11) | |
C5 | 0.1841 (6) | 0.15295 (10) | 0.1561 (4) | 0.0366 (10) | |
C6 | 0.3332 (6) | 0.15690 (10) | −0.0114 (4) | 0.0343 (9) | |
C7 | 0.5084 (6) | 0.12258 (10) | −0.0495 (4) | 0.0376 (10) | |
Cl1 | 0.75184 (16) | 0.19834 (3) | 0.56278 (12) | 0.0476 (3) | |
H1 | 0.974 (7) | 0.0328 (12) | −0.131 (5) | 0.0632* | |
H1A | 0.13993 | 0.19710 | −0.22519 | 0.0485* | |
H1B | 0.42649 | 0.20130 | −0.22080 | 0.0485* | |
H1C | 0.29515 | 0.22425 | −0.05970 | 0.0485* | |
H3 | 0.543 (7) | 0.0264 (13) | 0.342 (5) | 0.0743* | |
H4 | 0.12136 | 0.11186 | 0.40041 | 0.0498* | |
H4A | −0.063 (6) | 0.1874 (11) | 0.284 (5) | 0.0597* | |
H7 | 0.60291 | 0.12534 | −0.16402 | 0.0451* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0541 (15) | 0.0463 (15) | 0.0613 (14) | 0.0190 (11) | 0.0212 (13) | 0.0073 (11) |
O2 | 0.0518 (14) | 0.0443 (14) | 0.0728 (15) | 0.0160 (12) | 0.0189 (12) | 0.0144 (12) |
O3 | 0.0706 (18) | 0.0536 (16) | 0.0664 (16) | 0.0192 (13) | 0.0267 (14) | 0.0218 (13) |
O4 | 0.0599 (15) | 0.0434 (14) | 0.0525 (13) | 0.0153 (12) | 0.0311 (12) | 0.0053 (10) |
N1 | 0.0393 (14) | 0.0373 (15) | 0.0483 (14) | 0.0049 (12) | 0.0195 (12) | 0.0009 (12) |
C1 | 0.0349 (18) | 0.0375 (18) | 0.0538 (19) | 0.0028 (15) | 0.0067 (16) | 0.0026 (16) |
C2 | 0.0321 (16) | 0.0322 (17) | 0.0480 (18) | 0.0030 (14) | 0.0073 (14) | 0.0010 (14) |
C3 | 0.0410 (18) | 0.0357 (18) | 0.0453 (18) | 0.0028 (15) | 0.0085 (15) | 0.0084 (14) |
C4 | 0.0448 (19) | 0.0414 (19) | 0.0415 (17) | −0.0006 (16) | 0.0179 (15) | 0.0034 (15) |
C5 | 0.0361 (18) | 0.0348 (18) | 0.0406 (16) | −0.0005 (14) | 0.0116 (14) | −0.0047 (14) |
C6 | 0.0343 (16) | 0.0297 (17) | 0.0409 (16) | 0.0009 (13) | 0.0125 (14) | 0.0028 (13) |
C7 | 0.0346 (17) | 0.0381 (18) | 0.0417 (16) | 0.0014 (14) | 0.0115 (14) | −0.0018 (14) |
Cl1 | 0.0500 (5) | 0.0494 (5) | 0.0480 (4) | 0.0043 (4) | 0.0240 (4) | 0.0048 (4) |
O1—C1 | 1.314 (4) | N1—H1C | 0.8900 |
O2—C1 | 1.230 (4) | C1—C2 | 1.453 (4) |
O3—C3 | 1.347 (4) | C2—C7 | 1.399 (4) |
O4—C5 | 1.346 (4) | C2—C3 | 1.403 (4) |
O1—H1 | 0.85 (3) | C3—C4 | 1.384 (4) |
O3—H3 | 0.85 (4) | C4—C5 | 1.376 (4) |
O4—H4A | 0.85 (3) | C5—C6 | 1.395 (4) |
N1—C6 | 1.456 (4) | C6—C7 | 1.362 (4) |
N1—H1A | 0.8900 | C4—H4 | 0.9300 |
N1—H1B | 0.8900 | C7—H7 | 0.9300 |
Cl1···N1i | 3.176 (3) | C1···C1vi | 3.580 (4) |
Cl1···N1ii | 3.124 (3) | C1···O2vi | 3.245 (4) |
Cl1···C7i | 3.622 (3) | C1···O2v | 3.357 (4) |
Cl1···O4iii | 2.985 (2) | C1···C4iii | 3.335 (4) |
Cl1···N1iv | 3.217 (2) | C2···C4iii | 3.598 (4) |
Cl1···H4Aiii | 2.15 (3) | C3···C1viii | 3.587 (4) |
Cl1···H1Aii | 2.2400 | C4···C2viii | 3.598 (4) |
Cl1···H1Bi | 2.2900 | C4···C1viii | 3.335 (4) |
Cl1···H1Civ | 2.3500 | C7···O4iii | 3.322 (4) |
Cl1···H7i | 2.8800 | C7···Cl1ix | 3.622 (3) |
O1···O2v | 2.653 (3) | C1···H1v | 2.72 (3) |
O2···O3 | 2.632 (3) | C1···H3 | 2.34 (3) |
O2···C1vi | 3.245 (4) | H1···O2v | 1.81 (3) |
O2···O1v | 2.653 (3) | H1···C1v | 2.72 (3) |
O2···C1v | 3.357 (4) | H1···H1v | 2.50 (5) |
O3···O3vii | 2.899 (3) | H1A···Cl1x | 2.2400 |
O3···O2 | 2.632 (3) | H1A···O4 | 2.7200 |
O4···N1 | 2.642 (3) | H1B···H7 | 2.3500 |
O4···Cl1viii | 2.985 (2) | H1B···Cl1ix | 2.2900 |
O4···C7viii | 3.322 (4) | H1C···O4 | 2.4300 |
O1···H7 | 2.4000 | H1C···Cl1xi | 2.3500 |
O2···H3 | 1.84 (3) | H3···C1 | 2.34 (3) |
O2···H1v | 1.81 (3) | H3···O2 | 1.84 (3) |
O3···H3vii | 2.62 (3) | H3···H3vii | 2.60 (5) |
O4···H1C | 2.4300 | H3···O3vii | 2.62 (3) |
O4···H1A | 2.7200 | H4···H4A | 2.4200 |
N1···Cl1ix | 3.176 (3) | H4A···H4 | 2.4200 |
N1···Cl1x | 3.124 (3) | H4A···Cl1viii | 2.15 (3) |
N1···O4 | 2.642 (3) | H7···Cl1ix | 2.8800 |
N1···Cl1xi | 3.217 (2) | H7···O1 | 2.4000 |
C1···C3iii | 3.587 (4) | H7···H1B | 2.3500 |
C1—O1—H1 | 110 (2) | O3—C3—C4 | 116.8 (3) |
C3—O3—H3 | 103 (2) | C2—C3—C4 | 120.7 (3) |
C5—O4—H4A | 114 (2) | O3—C3—C2 | 122.5 (3) |
C6—N1—H1C | 109.00 | C3—C4—C5 | 120.0 (3) |
H1A—N1—H1B | 109.00 | C4—C5—C6 | 119.7 (3) |
C6—N1—H1A | 109.00 | O4—C5—C6 | 115.1 (2) |
C6—N1—H1B | 109.00 | O4—C5—C4 | 125.2 (3) |
H1B—N1—H1C | 109.00 | N1—C6—C5 | 117.5 (3) |
H1A—N1—H1C | 109.00 | N1—C6—C7 | 121.7 (2) |
O1—C1—C2 | 115.1 (3) | C5—C6—C7 | 120.8 (3) |
O1—C1—O2 | 122.4 (3) | C2—C7—C6 | 120.5 (3) |
O2—C1—C2 | 122.5 (3) | C3—C4—H4 | 120.00 |
C1—C2—C7 | 120.4 (2) | C5—C4—H4 | 120.00 |
C3—C2—C7 | 118.4 (3) | C2—C7—H7 | 120.00 |
C1—C2—C3 | 121.2 (3) | C6—C7—H7 | 120.00 |
O1—C1—C2—C3 | 179.2 (3) | O3—C3—C4—C5 | 179.4 (3) |
O1—C1—C2—C7 | −1.8 (4) | C2—C3—C4—C5 | −1.6 (5) |
O2—C1—C2—C3 | −1.2 (5) | C3—C4—C5—O4 | 179.3 (3) |
O2—C1—C2—C7 | 177.8 (3) | C3—C4—C5—C6 | −0.2 (4) |
C1—C2—C3—O3 | −0.2 (4) | O4—C5—C6—N1 | 2.6 (4) |
C1—C2—C3—C4 | −179.2 (3) | O4—C5—C6—C7 | −177.7 (3) |
C7—C2—C3—O3 | −179.2 (3) | C4—C5—C6—N1 | −177.8 (3) |
C7—C2—C3—C4 | 1.8 (4) | C4—C5—C6—C7 | 1.9 (4) |
C1—C2—C7—C6 | −179.2 (3) | N1—C6—C7—C2 | 178.0 (3) |
C3—C2—C7—C6 | −0.2 (4) | C5—C6—C7—C2 | −1.7 (4) |
Symmetry codes: (i) x, y, z+1; (ii) x+1, y, z+1; (iii) x+1, y, z; (iv) x+1/2, −y+1/2, z+1/2; (v) −x+2, −y, −z; (vi) −x+1, −y, −z; (vii) −x+1, −y, −z+1; (viii) x−1, y, z; (ix) x, y, z−1; (x) x−1, y, z−1; (xi) x−1/2, −y+1/2, z−1/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O2v | 0.85 (3) | 1.81 (3) | 2.653 (3) | 177 (4) |
N1—H1A···Cl1x | 0.89 | 2.24 | 3.124 (3) | 176 |
N1—H1B···Cl1ix | 0.89 | 2.29 | 3.176 (3) | 173 |
N1—H1C···Cl1xi | 0.89 | 2.35 | 3.217 (2) | 163 |
O3—H3···O2 | 0.85 (4) | 1.84 (3) | 2.632 (3) | 154 (3) |
O4—H4A···Cl1viii | 0.85 (3) | 2.15 (3) | 2.985 (2) | 170 (3) |
Symmetry codes: (v) −x+2, −y, −z; (viii) x−1, y, z; (ix) x, y, z−1; (x) x−1, y, z−1; (xi) x−1/2, −y+1/2, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | C7H8NO4+·Cl− |
Mr | 205.59 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 296 |
a, b, c (Å) | 5.0667 (3), 28.4071 (13), 6.3966 (3) |
β (°) | 97.649 (3) |
V (Å3) | 912.47 (8) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.40 |
Crystal size (mm) | 0.28 × 0.18 × 0.16 |
Data collection | |
Diffractometer | Bruker Kappa APEXII CCD |
Absorption correction | Multi-scan (SADABS; Bruker, 2005) |
Tmin, Tmax | 0.926, 0.935 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7094, 1635, 1108 |
Rint | 0.052 |
(sin θ/λ)max (Å−1) | 0.600 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.044, 0.098, 1.01 |
No. of reflections | 1635 |
No. of parameters | 128 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.23, −0.22 |
Computer programs: APEX2 (Bruker, 2009), SAINT (Bruker, 2009), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 for Windows (Farrugia, 1997) and PLATON (Spek, 2009), WinGX (Farrugia, 1999) and PLATON (Spek, 2009).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O2i | 0.85 (3) | 1.81 (3) | 2.653 (3) | 177 (4) |
N1—H1A···Cl1ii | 0.89 | 2.24 | 3.124 (3) | 176 |
N1—H1B···Cl1iii | 0.89 | 2.29 | 3.176 (3) | 173 |
N1—H1C···Cl1iv | 0.89 | 2.35 | 3.217 (2) | 163 |
O3—H3···O2 | 0.85 (4) | 1.84 (3) | 2.632 (3) | 154 (3) |
O4—H4A···Cl1v | 0.85 (3) | 2.15 (3) | 2.985 (2) | 170 (3) |
Symmetry codes: (i) −x+2, −y, −z; (ii) x−1, y, z−1; (iii) x, y, z−1; (iv) x−1/2, −y+1/2, z−1/2; (v) x−1, y, z. |
Acknowledgements
The authors acknowledge the provision of funds for the purchase of diffractometer and encouragement by Dr Muhammad Akram Chaudhary, Vice Chancellor, University of Sargodha, Pakistan.
References
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The title compound (I, Fig. 1) has been prepared for derivatization and for the synthesis of metallic complexes.
The crystal structure of (II) i.e., 5-ammoniosalicylic Acid chloride monohydrate (Dobson & Gerkin, 1998) and (III) i.e., bis(3-carboxyanilinum) bis(perchlorate) monohydrate (Bendjeddou et al., 2009) have been published which are related to the title compound.
In (I), the organic group (C1—C7/O1—O4/N1) is planar with r. m. s. deviation of 0.0265 Å. There exist a strong intramolecular H-bond of O—H···O type (Table 1, Fig. 1) completing an S(6) ring motif (Bernstein et al., 1995) in the organic part. The title compound consists of dimers due to intermolecular H-bond of O—H···O type (Table 1, Fig. 2) completing R22(8) ring motif. The dimers are interlinked through strong H-bondings of N—H···Cl and O—H···Cl types (Table 1, Fig. 2) resulting in a three dimensional polymeric network.