organic compounds
2-Carboxy-1-(3-nitrophenyl)ethanaminium perchlorate
aOrdered Matter Science Research Center, College of Chemistry and Chemical, Engineering, Southeast University, Nanjing 210096, People's Republic of China
*Correspondence e-mail: quzr@seu.edu.cn
In the cation of the title compound, C9H11N2O4+·ClO4−, the conformation is stabilized by an intramolecular N—H⋯O hydrogen bond. In the crystal packing, centrosymmetrically related cations interact through intermolecular O—H⋯O hydrogen bonds involving the carboxy groups, forming dimers. The dimers and the perchlorate anions are further linked into layers parallel to the ab plane by C—H⋯O and N—H⋯O hydrogen-bonding interactions.
Related literature
For the synthesis of β-amino acids, see: Cohen et al. (2002); Qu et al. (2004); Zhao (2007). For hydrogen-bond motifs, see: Bernstein et al. (1995); Etter et al. (1990).
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: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: PRPKAPPA (Ferguson, 1999).
Supporting information
10.1107/S1600536809051319/rz2399sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536809051319/rz2399Isup2.hkl
Under nitrogen protection, 3-nitrobenzaldehyde (4.53 g, 30 mmol), malonic acid (5.0 g, 48 mmol) and ammonium acetate (6.0 g, 78 mmol) were added in a flask and refluxed for 12 h yielding a white precipitate. After being cooled to room temperature, the solution was filtered, and the 3-amino-3-(3-nitrophenyl)propanoic acid obtained was dissolved in ethanol and perchloric acid. After slow evaporation of the solution over a period of 3 d, colourless prismatic crystals of the title compound suitable for X-ray
were isolated.All H atoms were calculated geometrically and were allowed to ride on their parent atoms, with C—H = 0.93–0.97 Å, N—H = 0.89 Å, O—H = 0.82 Å, and with Uiso(H) = 1.2 Ueq(C) or 1.5 Ueq(N, O).
Data collection: CrystalClear (Rigaku 2005); cell
CrystalClear (Rigaku 2005); data reduction: CrystalClear (Rigaku 2005); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: PRPKAPPA (Ferguson, 1999).Fig. 1. The asymmetric unit in the title compound, with the displacement ellipsoids were drawn at the 30% probability level. Intramolecular hydrogen bonds are shown as dashed lines. |
C9H11N2O4+·ClO4− | Z = 2 |
Mr = 310.65 | F(000) = 320 |
Triclinic, P1 | Dx = 1.672 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 7.5932 (8) Å | Cell parameters from 1641 reflections |
b = 7.8843 (1) Å | θ = 3.1–27.5° |
c = 11.8615 (6) Å | µ = 0.35 mm−1 |
α = 94.745 (3)° | T = 293 K |
β = 99.780 (7)° | Prism, colourless |
γ = 116.323 (4)° | 0.45 × 0.30 × 0.15 mm |
V = 617.11 (7) Å3 |
Rigaku SCXmini diffractometer | 2799 independent reflections |
Radiation source: fine-focus sealed tube | 1732 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.049 |
Detector resolution: 13.6612 pixels mm-1 | θmax = 27.5°, θmin = 2.9° |
CCD Profile fitting scans | h = −9→9 |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | k = −10→10 |
Tmin = 0.884, Tmax = 0.950 | l = −15→15 |
6395 measured reflections |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.058 | H-atom parameters constrained |
wR(F2) = 0.237 | w = 1/[σ2(Fo2) + (0.1426P)2] where P = (Fo2 + 2Fc2)/3 |
S = 0.99 | (Δ/σ)max < 0.001 |
2799 reflections | Δρmax = 0.58 e Å−3 |
183 parameters | Δρmin = −0.53 e Å−3 |
0 restraints | Extinction correction: SHELXL |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0014 (1) |
C9H11N2O4+·ClO4− | γ = 116.323 (4)° |
Mr = 310.65 | V = 617.11 (7) Å3 |
Triclinic, P1 | Z = 2 |
a = 7.5932 (8) Å | Mo Kα radiation |
b = 7.8843 (1) Å | µ = 0.35 mm−1 |
c = 11.8615 (6) Å | T = 293 K |
α = 94.745 (3)° | 0.45 × 0.30 × 0.15 mm |
β = 99.780 (7)° |
Rigaku SCXmini diffractometer | 2799 independent reflections |
Absorption correction: multi-scan (CrystalClear; Rigaku, 2005) | 1732 reflections with I > 2σ(I) |
Tmin = 0.884, Tmax = 0.950 | Rint = 0.049 |
6395 measured reflections |
R[F2 > 2σ(F2)] = 0.058 | 0 restraints |
wR(F2) = 0.237 | H-atom parameters constrained |
S = 0.99 | Δρmax = 0.58 e Å−3 |
2799 reflections | Δρmin = −0.53 e Å−3 |
183 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 | ||
Cl1 | 0.34320 (15) | 0.01534 (15) | 0.65117 (8) | 0.0463 (4) | |
O5 | 0.3304 (6) | −0.1381 (5) | 0.5737 (3) | 0.0772 (11) | |
O6 | 0.5400 (5) | 0.1058 (5) | 0.7279 (3) | 0.0763 (11) | |
O7 | 0.1979 (6) | −0.0555 (6) | 0.7205 (3) | 0.0867 (13) | |
O8 | 0.3233 (9) | 0.1574 (7) | 0.5920 (3) | 0.0996 (16) | |
O4 | 0.1696 (4) | 0.4174 (4) | 0.4775 (2) | 0.0423 (7) | |
O3 | 0.0141 (5) | 0.5359 (5) | 0.3563 (2) | 0.0523 (8) | |
H3 | −0.0234 | 0.5592 | 0.4138 | 0.079* | |
C3 | 0.7013 (5) | 0.4845 (5) | 0.1024 (3) | 0.0343 (8) | |
C2 | 0.6238 (5) | 0.4860 (5) | 0.1994 (3) | 0.0346 (8) | |
H2 | 0.6888 | 0.5908 | 0.2602 | 0.042* | |
C1 | 0.4454 (5) | 0.3264 (5) | 0.2039 (3) | 0.0315 (7) | |
N1 | 0.8866 (5) | 0.6592 (5) | 0.0985 (3) | 0.0467 (9) | |
N2 | 0.2618 (5) | 0.1458 (5) | 0.3442 (3) | 0.0444 (8) | |
H2A | 0.2265 | 0.1591 | 0.4110 | 0.067* | |
H2B | 0.3490 | 0.0984 | 0.3536 | 0.067* | |
H2C | 0.1525 | 0.0659 | 0.2896 | 0.067* | |
C9 | 0.1278 (5) | 0.4556 (5) | 0.3827 (3) | 0.0345 (8) | |
C7 | 0.3587 (5) | 0.3383 (5) | 0.3081 (3) | 0.0338 (8) | |
H7 | 0.4696 | 0.4278 | 0.3728 | 0.041* | |
C6 | 0.3520 (5) | 0.1742 (5) | 0.1112 (3) | 0.0366 (8) | |
H6 | 0.2322 | 0.0683 | 0.1136 | 0.044* | |
O1 | 0.9505 (5) | 0.6627 (5) | 0.0093 (3) | 0.0696 (10) | |
C5 | 0.4334 (6) | 0.1763 (6) | 0.0143 (3) | 0.0386 (8) | |
H5 | 0.3682 | 0.0730 | −0.0475 | 0.046* | |
O2 | 0.9618 (5) | 0.7907 (5) | 0.1799 (3) | 0.0722 (10) | |
C4 | 0.6139 (6) | 0.3347 (6) | 0.0106 (3) | 0.0394 (9) | |
H4 | 0.6728 | 0.3382 | −0.0524 | 0.047* | |
C8 | 0.2089 (6) | 0.4171 (6) | 0.2816 (3) | 0.0370 (8) | |
H8A | 0.2741 | 0.5361 | 0.2528 | 0.044* | |
H8B | 0.0960 | 0.3263 | 0.2198 | 0.044* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Cl1 | 0.0496 (6) | 0.0469 (6) | 0.0457 (6) | 0.0250 (5) | 0.0138 (4) | 0.0040 (4) |
O5 | 0.077 (3) | 0.055 (2) | 0.092 (3) | 0.0231 (19) | 0.034 (2) | −0.0077 (19) |
O6 | 0.054 (2) | 0.071 (2) | 0.082 (2) | 0.0171 (19) | −0.0018 (18) | 0.013 (2) |
O7 | 0.062 (2) | 0.103 (3) | 0.084 (3) | 0.023 (2) | 0.040 (2) | 0.002 (2) |
O8 | 0.185 (5) | 0.119 (3) | 0.047 (2) | 0.119 (4) | 0.017 (2) | 0.022 (2) |
O4 | 0.0490 (15) | 0.0624 (18) | 0.0341 (14) | 0.0396 (15) | 0.0155 (12) | 0.0111 (12) |
O3 | 0.0618 (18) | 0.086 (2) | 0.0394 (14) | 0.0580 (18) | 0.0179 (14) | 0.0155 (15) |
C3 | 0.0284 (17) | 0.041 (2) | 0.0417 (19) | 0.0200 (16) | 0.0139 (15) | 0.0149 (16) |
C2 | 0.0292 (18) | 0.0376 (19) | 0.0381 (19) | 0.0168 (16) | 0.0071 (15) | 0.0057 (15) |
C1 | 0.0296 (17) | 0.0360 (18) | 0.0319 (17) | 0.0174 (15) | 0.0082 (14) | 0.0056 (14) |
N1 | 0.0353 (18) | 0.049 (2) | 0.065 (2) | 0.0217 (17) | 0.0210 (17) | 0.0245 (19) |
N2 | 0.056 (2) | 0.052 (2) | 0.0401 (17) | 0.0335 (18) | 0.0215 (16) | 0.0162 (15) |
C9 | 0.0336 (18) | 0.0391 (19) | 0.0350 (18) | 0.0198 (16) | 0.0111 (15) | 0.0045 (15) |
C7 | 0.0297 (17) | 0.0371 (19) | 0.0349 (18) | 0.0149 (15) | 0.0101 (14) | 0.0070 (15) |
C6 | 0.0341 (18) | 0.0330 (18) | 0.0413 (19) | 0.0137 (16) | 0.0119 (15) | 0.0046 (15) |
O1 | 0.062 (2) | 0.080 (2) | 0.088 (2) | 0.0352 (19) | 0.053 (2) | 0.041 (2) |
C5 | 0.042 (2) | 0.040 (2) | 0.0376 (19) | 0.0215 (18) | 0.0115 (16) | 0.0028 (16) |
O2 | 0.055 (2) | 0.054 (2) | 0.074 (2) | −0.0025 (17) | 0.0133 (18) | 0.0074 (19) |
C4 | 0.043 (2) | 0.056 (2) | 0.0359 (18) | 0.032 (2) | 0.0193 (16) | 0.0173 (17) |
C8 | 0.043 (2) | 0.045 (2) | 0.0356 (18) | 0.0273 (18) | 0.0198 (16) | 0.0116 (16) |
Cl1—O5 | 1.414 (3) | N1—O1 | 1.234 (4) |
Cl1—O8 | 1.419 (4) | N2—C7 | 1.501 (5) |
Cl1—O7 | 1.429 (4) | N2—H2A | 0.8900 |
Cl1—O6 | 1.433 (4) | N2—H2B | 0.8900 |
O4—C9 | 1.214 (4) | N2—H2C | 0.8900 |
O3—C9 | 1.292 (4) | C9—C8 | 1.506 (4) |
O3—H3 | 0.8200 | C7—C8 | 1.521 (5) |
C3—C4 | 1.366 (5) | C7—H7 | 0.9800 |
C3—C2 | 1.380 (5) | C6—C5 | 1.392 (5) |
C3—N1 | 1.481 (5) | C6—H6 | 0.9300 |
C2—C1 | 1.395 (5) | C5—C4 | 1.397 (5) |
C2—H2 | 0.9300 | C5—H5 | 0.9300 |
C1—C6 | 1.384 (5) | C4—H4 | 0.9300 |
C1—C7 | 1.511 (5) | C8—H8A | 0.9700 |
N1—O2 | 1.207 (5) | C8—H8B | 0.9700 |
O5—Cl1—O8 | 111.9 (2) | O4—C9—O3 | 125.3 (3) |
O5—Cl1—O7 | 110.5 (2) | O4—C9—C8 | 122.8 (3) |
O8—Cl1—O7 | 111.6 (3) | O3—C9—C8 | 111.9 (3) |
O5—Cl1—O6 | 107.7 (2) | N2—C7—C1 | 111.0 (3) |
O8—Cl1—O6 | 107.2 (3) | N2—C7—C8 | 111.1 (3) |
O7—Cl1—O6 | 107.7 (2) | C1—C7—C8 | 110.1 (3) |
C9—O3—H3 | 109.5 | N2—C7—H7 | 108.2 |
C4—C3—C2 | 123.7 (3) | C1—C7—H7 | 108.2 |
C4—C3—N1 | 119.4 (3) | C8—C7—H7 | 108.2 |
C2—C3—N1 | 116.9 (3) | C1—C6—C5 | 121.4 (3) |
C3—C2—C1 | 118.3 (3) | C1—C6—H6 | 119.3 |
C3—C2—H2 | 120.9 | C5—C6—H6 | 119.3 |
C1—C2—H2 | 120.9 | C6—C5—C4 | 119.4 (3) |
C6—C1—C2 | 119.1 (3) | C6—C5—H5 | 120.3 |
C6—C1—C7 | 124.0 (3) | C4—C5—H5 | 120.3 |
C2—C1—C7 | 116.7 (3) | C3—C4—C5 | 117.9 (3) |
O2—N1—O1 | 124.1 (4) | C3—C4—H4 | 121.0 |
O2—N1—C3 | 118.7 (3) | C5—C4—H4 | 121.0 |
O1—N1—C3 | 117.1 (4) | C9—C8—C7 | 115.3 (3) |
C7—N2—H2A | 109.5 | C9—C8—H8A | 108.4 |
C7—N2—H2B | 109.5 | C7—C8—H8A | 108.4 |
H2A—N2—H2B | 109.5 | C9—C8—H8B | 108.4 |
C7—N2—H2C | 109.5 | C7—C8—H8B | 108.4 |
H2A—N2—H2C | 109.5 | H8A—C8—H8B | 107.5 |
H2B—N2—H2C | 109.5 |
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2A···O4 | 0.89 | 2.36 | 2.953 (4) | 124 |
N2—H2A···O8 | 0.89 | 2.15 | 2.884 (5) | 139 |
N2—H2B···O5i | 0.89 | 2.31 | 3.113 (5) | 150 |
N2—H2B···O6i | 0.89 | 2.34 | 3.120 (5) | 147 |
N2—H2C···O2ii | 0.89 | 2.15 | 2.960 (5) | 152 |
O3—H3···O4iii | 0.82 | 1.89 | 2.690 (4) | 167 |
C2—H2···O8iv | 0.93 | 2.58 | 3.420 (5) | 150 |
C6—H6···O2ii | 0.93 | 2.54 | 3.445 (5) | 163 |
C8—H8A···O6iv | 0.97 | 2.50 | 3.403 (5) | 154 |
C8—H8B···O7v | 0.97 | 2.57 | 3.134 (6) | 117 |
Symmetry codes: (i) −x+1, −y, −z+1; (ii) x−1, y−1, z; (iii) −x, −y+1, −z+1; (iv) −x+1, −y+1, −z+1; (v) −x, −y, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C9H11N2O4+·ClO4− |
Mr | 310.65 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 7.5932 (8), 7.8843 (1), 11.8615 (6) |
α, β, γ (°) | 94.745 (3), 99.780 (7), 116.323 (4) |
V (Å3) | 617.11 (7) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.35 |
Crystal size (mm) | 0.45 × 0.30 × 0.15 |
Data collection | |
Diffractometer | Rigaku SCXmini diffractometer |
Absorption correction | Multi-scan (CrystalClear; Rigaku, 2005) |
Tmin, Tmax | 0.884, 0.950 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6395, 2799, 1732 |
Rint | 0.049 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.058, 0.237, 0.99 |
No. of reflections | 2799 |
No. of parameters | 183 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.58, −0.53 |
Computer programs: CrystalClear (Rigaku 2005), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008), PRPKAPPA (Ferguson, 1999).
D—H···A | D—H | H···A | D···A | D—H···A |
N2—H2A···O4 | 0.89 | 2.36 | 2.953 (4) | 123.7 |
N2—H2A···O8 | 0.89 | 2.15 | 2.884 (5) | 139.1 |
N2—H2B···O5i | 0.89 | 2.31 | 3.113 (5) | 150.1 |
N2—H2B···O6i | 0.89 | 2.34 | 3.120 (5) | 147.0 |
N2—H2C···O2ii | 0.89 | 2.15 | 2.960 (5) | 151.8 |
O3—H3···O4iii | 0.82 | 1.89 | 2.690 (4) | 166.7 |
C2—H2···O8iv | 0.93 | 2.58 | 3.420 (5) | 150.2 |
C6—H6···O2ii | 0.93 | 2.54 | 3.445 (5) | 163.3 |
C8—H8A···O6iv | 0.97 | 2.50 | 3.403 (5) | 154.2 |
C8—H8B···O7v | 0.97 | 2.57 | 3.134 (6) | 117.2 |
Symmetry codes: (i) −x+1, −y, −z+1; (ii) x−1, y−1, z; (iii) −x, −y+1, −z+1; (iv) −x+1, −y+1, −z+1; (v) −x, −y, −z+1. |
Acknowledgements
This work was supported by the Technical Fund Financing Projects (No. 9207042464 and 9207041482) from Southeast University to ZRQ.
References
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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.
β-Amino acids are important molecules due to their pharmacological properties. Recently, there have been an increased interest in the enantiomeric preparation of β-amino acids as precursors for the synthesis of novel biologically active compounds (Cohen et al., 2002). In addition, β-amino acids are attractive ligands for use in the generation of polar coordination polymers, especially when one considers that the ferroelectric compounds (Qu et al., 2004).
The asymmetric unit of the title compound (Fig. 1) contains one 1-(3-nitrophenyl)-2-carboxyethanaminium and one perchlorate anion. The conformation of the cation is stabilized by an intramolecular N—H···O hydrogen bond (Table 1). In the crystal packing, centrosymmetrically related cations at (x, y, z) and (-x, 1-y, 1-z) are linked into a dimer by intermolecular O—H···O hydrogen bonds involving the carboxy groups forming an eigth-membered ring of graph set motif R2 2(8) (Etter et al., 1990; Bernstein et al., 1995). The dimers and the perchlorate anions are further connected into layers parallel to the ab plane (Fig. 2) by C—H···O and N—H···O hydrogen bonding interactions.