organic compounds
N-(2-hydroxyethyl)-5-nitroisophthalamic acid monohydrate
ofaInstitute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237, People's Republic of China, and bJiangsu Institute of Nuclear Medicine, Wuxi 214063, People's Republic of China
*Correspondence e-mail: zou-pei@163.com
In the title compound, C10H10N2O6·H2O, the carboxylic acid group and the nitro group are essentially coplanar with the benzene ring [maximum deviation = 0.0264 (9) Å], while the amide group is oriented at a dihedral angle of 9.22 (5)° with respect to the benzene ring. In the crystal, classical O—H⋯O and N—H⋯O hydrogen bonds and weak C—H⋯O interactions link the organic molecules and water molecules of crystallization into a three-dimensional supramolecular architecture.
Keywords: crystal structure; isophthalamic acid; hydrogen bonding; C—H⋯O interactions; X-ray contrast media.
CCDC reference: 1030629
1. Related literature
The title compound is an intermediate for the preparation of iodinated X-ray contrast media, such as ioxitalamic acid and ioxilan, see: Prous et al. (1995); Sovak (1988); Stacul (2001). For a related structure, see: Liu et al. (2009).
2. Experimental
2.1. Crystal data
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2.3. Refinement
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Data collection: CrystalClear (Rigaku/MSC, 2008); cell CrystalClear; data reduction: CrystalClear; 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.
Supporting information
CCDC reference: 1030629
10.1107/S160053681402337X/xu5826sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S160053681402337X/xu5826Isup2.hkl
Supporting information file. DOI: 10.1107/S160053681402337X/xu5826Isup3.cml
The title compound has been used as an important intermediate for the preparation of iodinated X-ray contrast media, such as ioxitalamic acid and ioxilan, which are used clinically all over the world (Prous et al., 1995; Sovak et al., 1988; Stacul et al., 2001). We report here the
of title compound.The structure of the title compound is shown in Fig. 1 and hydrogen bond geometry is given in Table 1. The crystal data show that the bond lengths and angles are within expected ranges and agree well with the corresponding molecular dimensions reported for a similar compound (Liu et al., 2009) . In the title compound, the carboxylic acid group and nitro group are approximately co-planar with the benzene ring [maximum deviation = 0.0264 (9) Å], while the amide moiety is oriented with respect to the benzene ring at 9.22 (5)°. In the crystal, classic O—H···O, N—H···O hydrogen bonds and weak C—H···O hydrogen interactions link organic molecules and crystalline water molecules into the three dimensional supramolecular architecture.
Monomethyl 5-nitrobenzene-1,3-dihydrogencarboxylate (900 mg, 4 mmol) was dissolved in methanol (5 ml), then ethanolamine (610 mg, 10 mmol) was added and the mixture was refluxed for 16 h. Methanol was distilled off. The residue was dissolved in water and methanol (v/v 1:1), then acidified with 1 M hydrochloric acid to pH = 3. The precipitate was filtered and washed with water. The crude product was recrystallized from ethanol/water. Single crystals were obtained by slow evaporation of an ethanol/water (v/v 7:1) solution.
Data collection: CrystalClear (Rigaku/MSC, 2008); cell
CrystalClear (Rigaku/MSC, 2008); data reduction: CrystalClear (Rigaku/MSC, 2008); 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).Fig. 1. A view of the title compound with the atomic numbering scheme. Displacement ellipsoids were drawn at the 30% probability level. |
C10H10N2O6·H2O | Z = 2 |
Mr = 272.22 | F(000) = 284 |
Triclinic, P1 | Dx = 1.571 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 6.449 (3) Å | Cell parameters from 2242 reflections |
b = 8.670 (5) Å | θ = 2.5–31.5° |
c = 11.051 (6) Å | µ = 0.14 mm−1 |
α = 106.581 (8)° | T = 173 K |
β = 101.466 (9)° | Platelet, colorless |
γ = 93.692 (4)° | 0.44 × 0.31 × 0.06 mm |
V = 575.6 (5) Å3 |
Rigaku AFC10/Saturn724+ diffractometer | 3775 independent reflections |
Radiation source: Rotating Anode | 2826 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.028 |
Detector resolution: 28.5714 pixels mm-1 | θmax = 31.5°, θmin = 2.5° |
phi and ω scans | h = −9→9 |
Absorption correction: multi-scan (CrystalClear; Rigaku/MSC, 2008) | k = −12→12 |
Tmin = 0.93, Tmax = 0.98 | l = −16→16 |
8661 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)] = 0.042 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.110 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0516P)2 + 0.0635P] where P = (Fo2 + 2Fc2)/3 |
3775 reflections | (Δ/σ)max < 0.001 |
192 parameters | Δρmax = 0.41 e Å−3 |
0 restraints | Δρmin = −0.21 e Å−3 |
C10H10N2O6·H2O | γ = 93.692 (4)° |
Mr = 272.22 | V = 575.6 (5) Å3 |
Triclinic, P1 | Z = 2 |
a = 6.449 (3) Å | Mo Kα radiation |
b = 8.670 (5) Å | µ = 0.14 mm−1 |
c = 11.051 (6) Å | T = 173 K |
α = 106.581 (8)° | 0.44 × 0.31 × 0.06 mm |
β = 101.466 (9)° |
Rigaku AFC10/Saturn724+ diffractometer | 3775 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku/MSC, 2008) | 2826 reflections with I > 2σ(I) |
Tmin = 0.93, Tmax = 0.98 | Rint = 0.028 |
8661 measured reflections |
R[F2 > 2σ(F2)] = 0.042 | 0 restraints |
wR(F2) = 0.110 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | Δρmax = 0.41 e Å−3 |
3775 reflections | Δρmin = −0.21 e Å−3 |
192 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 | 0.13495 (17) | 0.98481 (9) | 0.27386 (8) | 0.0329 (2) | |
O2 | −0.24748 (15) | 0.59705 (10) | −0.05062 (8) | 0.0295 (2) | |
O3 | 0.18120 (14) | 0.29530 (9) | 0.34122 (8) | 0.02551 (19) | |
O4 | 0.26622 (14) | 0.33382 (9) | 0.55509 (8) | 0.02415 (19) | |
O5 | 0.39066 (19) | 0.91355 (11) | 0.83077 (8) | 0.0419 (3) | |
O6 | 0.36654 (17) | 1.10655 (10) | 0.74248 (9) | 0.0336 (2) | |
O7 | 0.33213 (16) | 0.48483 (11) | 0.83119 (10) | 0.0321 (2) | |
N1 | 0.13279 (17) | 0.73307 (11) | 0.14290 (9) | 0.0232 (2) | |
N2 | 0.35598 (17) | 0.96255 (11) | 0.73593 (9) | 0.0246 (2) | |
C1 | 0.23184 (17) | 0.38719 (12) | 0.46364 (10) | 0.0183 (2) | |
C2 | 0.24161 (17) | 0.56423 (12) | 0.47566 (10) | 0.0175 (2) | |
C3 | 0.29369 (17) | 0.67808 (12) | 0.59893 (10) | 0.0190 (2) | |
H3 | 0.3237 | 0.6453 | 0.6750 | 0.023* | |
C4 | 0.30003 (17) | 0.84077 (12) | 0.60621 (10) | 0.0192 (2) | |
C5 | 0.25634 (17) | 0.89481 (12) | 0.49861 (10) | 0.0197 (2) | |
H5 | 0.2607 | 1.0074 | 0.5079 | 0.024* | |
C6 | 0.20567 (17) | 0.77954 (12) | 0.37580 (10) | 0.0183 (2) | |
C7 | 0.19851 (17) | 0.61473 (12) | 0.36545 (10) | 0.0184 (2) | |
H7 | 0.1638 | 0.5361 | 0.2821 | 0.022* | |
C8 | 0.15561 (19) | 0.83987 (12) | 0.25990 (10) | 0.0208 (2) | |
C9 | 0.0792 (2) | 0.77886 (14) | 0.02391 (11) | 0.0269 (3) | |
H9A | 0.1418 | 0.7084 | −0.0433 | 0.032* | |
H9B | 0.1419 | 0.8924 | 0.0411 | 0.032* | |
C10 | −0.1591 (2) | 0.76327 (13) | −0.02582 (11) | 0.0278 (3) | |
H10A | −0.2227 | 0.8365 | 0.0393 | 0.033* | |
H10B | −0.1913 | 0.7940 | −0.1066 | 0.033* | |
H1N | 0.157 (2) | 0.6305 (19) | 0.1355 (14) | 0.036 (4)* | |
H2O | −0.397 (5) | 0.569 (3) | −0.096 (3) | 0.120 (10)* | |
H3O | 0.168 (3) | 0.188 (2) | 0.3314 (17) | 0.053 (5)* | |
H7A | 0.317 (3) | 0.421 (2) | 0.759 (2) | 0.060 (6)* | |
H7B | 0.302 (4) | 0.440 (3) | 0.888 (2) | 0.089 (8)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0600 (6) | 0.0125 (4) | 0.0251 (4) | 0.0069 (4) | 0.0059 (4) | 0.0062 (3) |
O2 | 0.0387 (5) | 0.0219 (4) | 0.0256 (4) | 0.0048 (4) | 0.0028 (4) | 0.0064 (3) |
O3 | 0.0422 (5) | 0.0126 (3) | 0.0208 (4) | 0.0033 (3) | 0.0063 (4) | 0.0041 (3) |
O4 | 0.0321 (5) | 0.0200 (4) | 0.0231 (4) | 0.0051 (3) | 0.0064 (3) | 0.0104 (3) |
O5 | 0.0755 (8) | 0.0291 (5) | 0.0179 (4) | 0.0106 (5) | 0.0042 (5) | 0.0055 (3) |
O6 | 0.0525 (6) | 0.0160 (4) | 0.0277 (5) | 0.0007 (4) | 0.0083 (4) | 0.0010 (3) |
O7 | 0.0448 (6) | 0.0260 (5) | 0.0239 (5) | 0.0035 (4) | 0.0052 (4) | 0.0069 (4) |
N1 | 0.0369 (6) | 0.0134 (4) | 0.0193 (4) | 0.0037 (4) | 0.0051 (4) | 0.0055 (3) |
N2 | 0.0317 (5) | 0.0196 (4) | 0.0195 (4) | 0.0028 (4) | 0.0048 (4) | 0.0021 (3) |
C1 | 0.0204 (5) | 0.0153 (4) | 0.0207 (5) | 0.0035 (4) | 0.0066 (4) | 0.0063 (4) |
C2 | 0.0187 (5) | 0.0134 (4) | 0.0211 (5) | 0.0026 (4) | 0.0058 (4) | 0.0053 (4) |
C3 | 0.0218 (5) | 0.0172 (5) | 0.0188 (5) | 0.0035 (4) | 0.0050 (4) | 0.0060 (4) |
C4 | 0.0221 (5) | 0.0160 (5) | 0.0171 (5) | 0.0018 (4) | 0.0039 (4) | 0.0020 (4) |
C5 | 0.0236 (5) | 0.0133 (4) | 0.0210 (5) | 0.0014 (4) | 0.0050 (4) | 0.0036 (4) |
C6 | 0.0220 (5) | 0.0140 (4) | 0.0188 (5) | 0.0021 (4) | 0.0043 (4) | 0.0049 (4) |
C7 | 0.0222 (5) | 0.0139 (4) | 0.0184 (5) | 0.0022 (4) | 0.0045 (4) | 0.0041 (3) |
C8 | 0.0273 (6) | 0.0129 (4) | 0.0207 (5) | 0.0005 (4) | 0.0039 (4) | 0.0044 (4) |
C9 | 0.0449 (7) | 0.0175 (5) | 0.0202 (5) | 0.0030 (5) | 0.0092 (5) | 0.0077 (4) |
C10 | 0.0466 (8) | 0.0183 (5) | 0.0189 (5) | 0.0098 (5) | 0.0064 (5) | 0.0056 (4) |
O1—C8 | 1.2408 (14) | C2—C7 | 1.3921 (16) |
O2—C10 | 1.4435 (16) | C2—C3 | 1.3967 (15) |
O2—H2O | 0.98 (3) | C3—C4 | 1.3871 (16) |
O3—C1 | 1.3219 (14) | C3—H3 | 0.9500 |
O3—H3O | 0.904 (19) | C4—C5 | 1.3837 (16) |
O4—C1 | 1.2147 (14) | C5—C6 | 1.3983 (15) |
O5—N2 | 1.2257 (14) | C5—H5 | 0.9500 |
O6—N2 | 1.2264 (14) | C6—C7 | 1.3974 (15) |
O7—H7A | 0.81 (2) | C6—C8 | 1.5027 (16) |
O7—H7B | 0.88 (3) | C7—H7 | 0.9500 |
N1—C8 | 1.3321 (15) | C9—C10 | 1.509 (2) |
N1—C9 | 1.4632 (16) | C9—H9A | 0.9900 |
N1—H1N | 0.897 (16) | C9—H9B | 0.9900 |
N2—C4 | 1.4770 (15) | C10—H10A | 0.9900 |
C1—C2 | 1.4984 (16) | C10—H10B | 0.9900 |
C10—O2—H2O | 115.2 (15) | C6—C5—H5 | 120.8 |
C1—O3—H3O | 113.6 (11) | C7—C6—C5 | 119.40 (10) |
H7A—O7—H7B | 113 (2) | C7—C6—C8 | 122.83 (9) |
C8—N1—C9 | 122.19 (10) | C5—C6—C8 | 117.75 (10) |
C8—N1—H1N | 119.9 (10) | C2—C7—C6 | 120.85 (10) |
C9—N1—H1N | 117.8 (10) | C2—C7—H7 | 119.6 |
O5—N2—O6 | 123.86 (10) | C6—C7—H7 | 119.6 |
O5—N2—C4 | 117.95 (10) | O1—C8—N1 | 121.55 (10) |
O6—N2—C4 | 118.19 (10) | O1—C8—C6 | 120.47 (10) |
O4—C1—O3 | 123.79 (10) | N1—C8—C6 | 117.98 (10) |
O4—C1—C2 | 124.30 (10) | N1—C9—C10 | 111.50 (10) |
O3—C1—C2 | 111.91 (9) | N1—C9—H9A | 109.3 |
C7—C2—C3 | 120.36 (10) | C10—C9—H9A | 109.3 |
C7—C2—C1 | 120.47 (9) | N1—C9—H9B | 109.3 |
C3—C2—C1 | 119.16 (9) | C10—C9—H9B | 109.3 |
C4—C3—C2 | 117.51 (10) | H9A—C9—H9B | 108.0 |
C4—C3—H3 | 121.2 | O2—C10—C9 | 108.51 (9) |
C2—C3—H3 | 121.2 | O2—C10—H10A | 110.0 |
C5—C4—C3 | 123.53 (10) | C9—C10—H10A | 110.0 |
C5—C4—N2 | 118.37 (10) | O2—C10—H10B | 110.0 |
C3—C4—N2 | 118.10 (10) | C9—C10—H10B | 110.0 |
C4—C5—C6 | 118.34 (10) | H10A—C10—H10B | 108.4 |
C4—C5—H5 | 120.8 | ||
O4—C1—C2—C7 | −179.61 (11) | C4—C5—C6—C7 | 0.66 (16) |
O3—C1—C2—C7 | 0.41 (14) | C4—C5—C6—C8 | 179.17 (10) |
O4—C1—C2—C3 | 0.13 (16) | C3—C2—C7—C6 | −0.23 (16) |
O3—C1—C2—C3 | −179.85 (10) | C1—C2—C7—C6 | 179.51 (10) |
C7—C2—C3—C4 | 0.08 (16) | C5—C6—C7—C2 | −0.15 (16) |
C1—C2—C3—C4 | −179.66 (9) | C8—C6—C7—C2 | −178.58 (10) |
C2—C3—C4—C5 | 0.46 (17) | C9—N1—C8—O1 | −0.92 (19) |
C2—C3—C4—N2 | −179.69 (10) | C9—N1—C8—C6 | 178.56 (10) |
O5—N2—C4—C5 | 178.70 (11) | C7—C6—C8—O1 | 169.92 (11) |
O6—N2—C4—C5 | −1.81 (16) | C5—C6—C8—O1 | −8.53 (17) |
O5—N2—C4—C3 | −1.16 (16) | C7—C6—C8—N1 | −9.56 (17) |
O6—N2—C4—C3 | 178.33 (10) | C5—C6—C8—N1 | 171.99 (11) |
C3—C4—C5—C6 | −0.84 (17) | C8—N1—C9—C10 | −88.93 (13) |
N2—C4—C5—C6 | 179.31 (10) | N1—C9—C10—O2 | −59.16 (12) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···O2i | 0.896 (17) | 2.103 (16) | 2.947 (2) | 156.6 (13) |
O2—H2O···O7ii | 0.97 (3) | 1.78 (3) | 2.744 (2) | 169 (2) |
O3—H3O···O1iii | 0.902 (18) | 1.677 (18) | 2.5601 (19) | 165.7 (17) |
O7—H7A···O4 | 0.81 (2) | 2.11 (2) | 2.887 (2) | 159.3 (18) |
O7—H7B···O2iv | 0.87 (2) | 2.01 (2) | 2.853 (2) | 164 (2) |
C3—H3···O7 | 0.95 | 2.50 | 3.422 (2) | 163 |
C9—H9A···O7v | 0.99 | 2.58 | 3.537 (3) | 164 |
C10—H10B···O3i | 0.99 | 2.50 | 3.348 (2) | 143 |
Symmetry codes: (i) −x, −y+1, −z; (ii) x−1, y, z−1; (iii) x, y−1, z; (iv) −x, −y+1, −z+1; (v) x, y, z−1. |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1N···O2i | 0.896 (17) | 2.103 (16) | 2.947 (2) | 156.6 (13) |
O2—H2O···O7ii | 0.97 (3) | 1.78 (3) | 2.744 (2) | 169 (2) |
O3—H3O···O1iii | 0.902 (18) | 1.677 (18) | 2.5601 (19) | 165.7 (17) |
O7—H7A···O4 | 0.81 (2) | 2.11 (2) | 2.887 (2) | 159.3 (18) |
O7—H7B···O2iv | 0.87 (2) | 2.01 (2) | 2.853 (2) | 164 (2) |
C3—H3···O7 | 0.95 | 2.50 | 3.422 (2) | 163 |
C9—H9A···O7v | 0.99 | 2.58 | 3.537 (3) | 164 |
C10—H10B···O3i | 0.99 | 2.50 | 3.348 (2) | 143 |
Symmetry codes: (i) −x, −y+1, −z; (ii) x−1, y, z−1; (iii) x, y−1, z; (iv) −x, −y+1, −z+1; (v) x, y, z−1. |
Footnotes
‡Permanent address: Jiangsu Institute of Nuclear Medicine, Wuxi 214063, People's Republic of China.
Acknowledgements
The authors acknowledge financial support from Jiangsu Institute of Nuclear Medicine, China.
References
Liu, Y.-L., Zou, P., Xie, M.-H., Luo, S.-N. & He, Y.-J. (2009). Acta Cryst. E65, o1174. Web of Science CSD CrossRef IUCr Journals Google Scholar
Prous, J., Mealy, N. & Castaner, J. (1995). Drugs Fut. 20, 16–18. Google Scholar
Rigaku/MSC (2008). CrystalClear. Rigaku/MSC Inc., The Woodlands, Texas, USA. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Sovak, M. (1988). Invest. Radiol. 23, 79–83. CrossRef Google Scholar
Stacul, F. (2001). Eur. Radiol. 11, 690–697. Web of Science CrossRef PubMed CAS Google Scholar
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