organic compounds
4-Nitroisophthalic acid
aKey Laboratory of Urban and Architectural Heritage Conservation, (Southeast University), Ministry of Education, Nanjing 210096, People's Republic of China, and College of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, People's Republic of China
*Correspondence e-mail: peluoyh@sina.com
In the 8H5NO6, both carboxyl groups are involved in intermolecular centrosymmetric cyclic O—H⋯O hydrogen-bonding associations, which give a zigzag chain structure extending along (21). Weak π–π stacking interactions are also present [minimum ring centroid separation = 3.893 (4) Å].
of the title compound, CRelated literature
For 4-nitroisophthalic acid as an intermediate in the synthesis of pharmaceutical drugs and as a ligand in transition metal complexes, see: Birk & Weihe (2009); Pan et al. (2011).
Experimental
Crystal data
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Refinement
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Data collection: CrystalClear (Rigaku, 2005); cell CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg & Putz, 2005); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536811053797/zs2171sup1.cif
contains datablocks I, New_Global_Publ_Block. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811053797/zs2171Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536811053797/zs2171Isup3.cml
4-Nitroisophthalic acid was obtained commercially from ChemFuture PharmaTech, Ltd (Nanjing, Jiangsu). Crystals of it suitable for X-ray diffraction were obstained by slow evaporation of a methanol solution.
All H atoms attached to C atoms and O atoms were fixed geometrically and treated as riding with C—H = 0.93 Å, and O—H = 0.86±1 Å with Uiso(H) = 1.2Ueq(C).
Data collection: CrystalClear (Rigaku, 2005); cell
CrystalClear; data reduction: CrystalClear; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: DIAMOND (Brandenburg & Putz, 2005); software used to prepare material for publication: SHELXL97.C8H5NO6 | Z = 2 |
Mr = 211.13 | F(000) = 216 |
Triclinic, P1 | Dx = 1.642 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 7.0261 (14) Å | Cell parameters from 1943 reflections |
b = 7.4380 (15) Å | θ = 3.0–27.5° |
c = 8.5775 (17) Å | µ = 0.15 mm−1 |
α = 80.09 (3)° | T = 293 K |
β = 86.22 (3)° | Prism, red |
γ = 75.37 (3)° | 0.30 × 0.25 × 0.20 mm |
V = 427.14 (15) Å3 |
Rigaku SCXmini CCD-detector diffractometer | 1943 independent reflections |
Radiation source: fine-focus sealed tube | 1554 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.136 |
Detector resolution: 13.6612 pixels mm-1 | θmax = 27.5°, θmin = 3.0° |
CCD profile–fitting scans | h = −9→9 |
Absorption correction: multi-scan CrystalClear (Rigaku, 2005) | k = −9→9 |
Tmin = 0.957, Tmax = 0.971 | l = −11→11 |
4103 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)] = 0.092 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.308 | H-atom parameters constrained |
S = 0.86 | w = 1/[σ2(Fo2) + (0.1225P)2] where P = (Fo2 + 2Fc2)/3 |
1943 reflections | (Δ/σ)max = 0.017 |
136 parameters | Δρmax = 0.40 e Å−3 |
8 restraints | Δρmin = −0.50 e Å−3 |
C8H5NO6 | γ = 75.37 (3)° |
Mr = 211.13 | V = 427.14 (15) Å3 |
Triclinic, P1 | Z = 2 |
a = 7.0261 (14) Å | Mo Kα radiation |
b = 7.4380 (15) Å | µ = 0.15 mm−1 |
c = 8.5775 (17) Å | T = 293 K |
α = 80.09 (3)° | 0.30 × 0.25 × 0.20 mm |
β = 86.22 (3)° |
Rigaku SCXmini CCD-detector diffractometer | 1943 independent reflections |
Absorption correction: multi-scan CrystalClear (Rigaku, 2005) | 1554 reflections with I > 2σ(I) |
Tmin = 0.957, Tmax = 0.971 | Rint = 0.136 |
4103 measured reflections |
R[F2 > 2σ(F2)] = 0.092 | 8 restraints |
wR(F2) = 0.308 | H-atom parameters constrained |
S = 0.86 | Δρmax = 0.40 e Å−3 |
1943 reflections | Δρmin = −0.50 e Å−3 |
136 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 esds 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 | 0.7042 (7) | 0.0658 (7) | 0.5109 (6) | 0.0760 (19) | |
O2 | 0.8052 (7) | −0.0122 (8) | 0.2874 (6) | 0.081 (2) | |
O3 | 0.9385 (6) | 0.3293 (8) | 0.4061 (6) | 0.076 (2) | |
O4 | 0.7716 (6) | 0.6167 (8) | 0.4485 (6) | 0.074 (2) | |
O5 | 0.2226 (6) | 0.9309 (7) | 0.0974 (5) | 0.0637 (18) | |
O6 | 0.0288 (6) | 0.7626 (7) | 0.0224 (6) | 0.0706 (18) | |
N1 | 0.7089 (7) | 0.1015 (8) | 0.3680 (6) | 0.0470 (19) | |
C1 | 0.7884 (8) | 0.4702 (9) | 0.3938 (7) | 0.041 (2) | |
C2 | 0.6144 (7) | 0.4407 (9) | 0.3070 (6) | 0.0396 (19) | |
C3 | 0.5813 (8) | 0.2668 (9) | 0.2931 (7) | 0.044 (2) | |
C4 | 0.4265 (8) | 0.2656 (9) | 0.2113 (7) | 0.0446 (19) | |
C5 | 0.2929 (8) | 0.4233 (10) | 0.1433 (7) | 0.049 (2) | |
C6 | 0.4838 (7) | 0.6123 (9) | 0.2397 (6) | 0.0397 (19) | |
C7 | 0.3223 (7) | 0.5954 (10) | 0.1615 (6) | 0.045 (2) | |
C8 | 0.1809 (8) | 0.7812 (9) | 0.0882 (7) | 0.045 (2) | |
H4 | 0.87560 | 0.63520 | 0.48410 | 0.0880* | |
H4A | 0.40800 | 0.14920 | 0.19970 | 0.0540* | |
H5 | 0.13830 | 1.03360 | 0.05700 | 0.0770* | |
H5A | 0.18720 | 0.41500 | 0.08750 | 0.0590* | |
H6A | 0.50480 | 0.72900 | 0.24730 | 0.0480* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.075 (3) | 0.068 (4) | 0.066 (3) | 0.011 (3) | −0.018 (3) | 0.005 (3) |
O2 | 0.098 (4) | 0.058 (4) | 0.067 (3) | 0.017 (3) | −0.008 (3) | −0.006 (3) |
O3 | 0.034 (2) | 0.080 (4) | 0.105 (4) | 0.007 (3) | −0.030 (2) | −0.010 (3) |
O4 | 0.045 (2) | 0.097 (4) | 0.085 (4) | −0.009 (3) | −0.029 (2) | −0.032 (3) |
O5 | 0.049 (2) | 0.067 (4) | 0.074 (3) | −0.006 (3) | −0.034 (2) | −0.008 (3) |
O6 | 0.042 (2) | 0.086 (4) | 0.079 (3) | −0.001 (3) | −0.034 (2) | −0.010 (3) |
N1 | 0.046 (3) | 0.053 (4) | 0.036 (3) | −0.006 (3) | −0.015 (2) | 0.005 (3) |
C1 | 0.035 (3) | 0.047 (4) | 0.041 (4) | −0.012 (3) | −0.007 (3) | −0.001 (3) |
C2 | 0.025 (3) | 0.052 (4) | 0.038 (3) | 0.000 (3) | −0.012 (2) | −0.007 (3) |
C3 | 0.032 (3) | 0.055 (4) | 0.043 (4) | −0.002 (3) | −0.012 (3) | −0.012 (3) |
C4 | 0.048 (3) | 0.032 (3) | 0.060 (4) | −0.017 (3) | −0.011 (3) | −0.010 (3) |
C5 | 0.038 (3) | 0.067 (5) | 0.044 (4) | −0.010 (4) | −0.016 (3) | −0.011 (3) |
C6 | 0.032 (3) | 0.052 (4) | 0.036 (3) | −0.011 (3) | −0.012 (2) | −0.004 (3) |
C7 | 0.030 (3) | 0.071 (5) | 0.032 (3) | −0.004 (3) | −0.009 (2) | −0.010 (3) |
C8 | 0.037 (3) | 0.046 (4) | 0.054 (4) | −0.006 (3) | −0.013 (3) | −0.012 (3) |
O1—N1 | 1.209 (7) | C2—C6 | 1.424 (9) |
O2—N1 | 1.225 (8) | C2—C3 | 1.396 (9) |
O3—C1 | 1.281 (8) | C3—C4 | 1.335 (8) |
O4—C1 | 1.235 (9) | C4—C5 | 1.370 (9) |
O5—C8 | 1.237 (8) | C5—C7 | 1.383 (10) |
O6—C8 | 1.289 (7) | C6—C7 | 1.398 (7) |
O4—H4 | 0.8600 | C7—C8 | 1.543 (9) |
O5—H5 | 0.8700 | C4—H4A | 0.9300 |
N1—C3 | 1.406 (8) | C5—H5A | 0.9300 |
C1—C2 | 1.552 (8) | C6—H6A | 0.9300 |
C1—O4—H4 | 118.00 | C4—C5—C7 | 117.0 (5) |
C8—O5—H5 | 116.00 | C2—C6—C7 | 116.2 (6) |
O1—N1—C3 | 118.7 (5) | C5—C7—C8 | 120.9 (5) |
O2—N1—C3 | 119.2 (5) | C6—C7—C8 | 116.3 (6) |
O1—N1—O2 | 121.5 (6) | C5—C7—C6 | 122.7 (6) |
O4—C1—C2 | 120.2 (6) | O6—C8—C7 | 115.3 (5) |
O3—C1—O4 | 126.0 (6) | O5—C8—O6 | 126.5 (6) |
O3—C1—C2 | 113.8 (5) | O5—C8—C7 | 118.2 (5) |
C3—C2—C6 | 121.0 (5) | C3—C4—H4A | 118.00 |
C1—C2—C6 | 113.4 (5) | C5—C4—H4A | 118.00 |
C1—C2—C3 | 125.6 (5) | C4—C5—H5A | 122.00 |
N1—C3—C4 | 122.9 (6) | C7—C5—H5A | 121.00 |
N1—C3—C2 | 118.9 (5) | C2—C6—H6A | 122.00 |
C2—C3—C4 | 118.2 (6) | C7—C6—H6A | 122.00 |
C3—C4—C5 | 124.8 (6) | ||
O1—N1—C3—C2 | 69.8 (8) | C3—C2—C6—C7 | 0.6 (8) |
O1—N1—C3—C4 | −108.8 (7) | N1—C3—C4—C5 | 176.5 (6) |
O2—N1—C3—C2 | −118.3 (6) | C2—C3—C4—C5 | −2.1 (9) |
O2—N1—C3—C4 | 63.1 (8) | C3—C4—C5—C7 | 0.0 (9) |
O3—C1—C2—C3 | 23.2 (8) | C4—C5—C7—C6 | 2.5 (8) |
O3—C1—C2—C6 | −157.0 (5) | C4—C5—C7—C8 | 179.5 (5) |
O4—C1—C2—C3 | −154.2 (6) | C2—C6—C7—C5 | −2.7 (8) |
O4—C1—C2—C6 | 25.5 (8) | C2—C6—C7—C8 | −179.9 (5) |
C1—C2—C3—N1 | 2.8 (9) | C5—C7—C8—O5 | −174.4 (5) |
C1—C2—C3—C4 | −178.6 (5) | C5—C7—C8—O6 | 5.5 (8) |
C6—C2—C3—N1 | −177.0 (5) | C6—C7—C8—O5 | 2.8 (8) |
C6—C2—C3—C4 | 1.7 (8) | C6—C7—C8—O6 | −177.3 (5) |
C1—C2—C6—C7 | −179.2 (5) |
D—H···A | D—H | H···A | D···A | D—H···A |
O4—H4···O3i | 0.86 | 1.76 | 2.605 (7) | 168 |
O5—H5···O6ii | 0.87 | 1.73 | 2.602 (7) | 180 |
C5—H5A···O6iii | 0.93 | 2.56 | 3.423 (8) | 154 |
Symmetry codes: (i) −x+2, −y+1, −z+1; (ii) −x, −y+2, −z; (iii) −x, −y+1, −z. |
Experimental details
Crystal data | |
Chemical formula | C8H5NO6 |
Mr | 211.13 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 7.0261 (14), 7.4380 (15), 8.5775 (17) |
α, β, γ (°) | 80.09 (3), 86.22 (3), 75.37 (3) |
V (Å3) | 427.14 (15) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.15 |
Crystal size (mm) | 0.30 × 0.25 × 0.20 |
Data collection | |
Diffractometer | Rigaku SCXmini CCD-detector diffractometer |
Absorption correction | Multi-scan CrystalClear (Rigaku, 2005) |
Tmin, Tmax | 0.957, 0.971 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 4103, 1943, 1554 |
Rint | 0.136 |
(sin θ/λ)max (Å−1) | 0.649 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.092, 0.308, 0.86 |
No. of reflections | 1943 |
No. of parameters | 136 |
No. of restraints | 8 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.40, −0.50 |
Computer programs: CrystalClear (Rigaku, 2005), CrystalClear, SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), DIAMOND (Brandenburg & Putz, 2005), SHELXL97.
D—H···A | D—H | H···A | D···A | D—H···A |
O4—H4···O3i | 0.86 | 1.76 | 2.605 (7) | 168 |
O5—H5···O6ii | 0.87 | 1.73 | 2.602 (7) | 180 |
Symmetry codes: (i) −x+2, −y+1, −z+1; (ii) −x, −y+2, −z. |
References
Birk, T. & Weihe, H. (2009). J. Chem. Crystallogr. 39, 766–771. Web of Science CSD CrossRef CAS Google Scholar
Brandenburg, K. & Putz, H. (2005). DIAMOND. Crystal Impact GbR, Bonn, Germany. Google Scholar
Pan, M.-L., Luo, Y.-H. & Mao, S.-L. (2011). Acta Cryst. E67, o2345. Web of Science CSD CrossRef IUCr Journals Google Scholar
Rigaku. (2005). CrystalClear. Rigaku Corporation, Tokyo, Japan. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
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.
4-Nitroisophthalic acid is an important chemical material because it is an intermediate in the synthesis of many pharmaceutical drugs and is also an excellent ligand for many transition metal complexes (Pan et al., 2011; Birk & Weihe, 2009). As part of our interest in this compound, we report here the crystal structure of this acid.
The molecular structure of the title compound, C8H5NO6 is shown in Fig. 1. All of the non-H and non-O atoms are approximately coplanar: the maximu r.m.s. deviation being 0.0202 Å. In the crystal structure, both carboxylic acid groups are involved in intermolecular centrosymmetric cyclic O—H···O hydrogen-bonding associations (Table 1) which give a zigzag chain structure extending along (2 -1 1) (Fig. 2). Weak π···π stacking interactions are also present [minimum ring centroid separation = 3.893 (4) Å].