organic compounds
Anilinium 3-(4-hydroxy-3-methoxyphenyl)prop-2-enoate
aSchool of Chemistry and Environment, South China Normal University, Guangzhou 510631, People's Republic of China
*Correspondence e-mail: licaizhu1977@yahoo.com.cn
The structure of the title salt, C6H8N+·C10H9O4−, is stabilized by N—H⋯O and O—H⋯O hydrogen bonding between 3-(4-hydroxy-3-methoxyphenyl)prop-2-enoate anions and anilinium cations, which links the components into a two-dimensional array.
Related literature
For ferulic acid [3-(4-hydroxy-3-methoxyphenyl)-2-propenoic acid] and its pharmacological activity, see: Hirabayashi et al. (1995); Liyama et al. (1994); Nomura et al. (2003); Ogiwara et al. (2002); Ou et al. (2003). For crystal structures on hydrogen-bond motifs in organic ammonium salts, see: Ni et al. (2007); Smith et al. (2004).
Experimental
Crystal data
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Data collection
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Refinement
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Data collection: APEX2 (Bruker, 2004); cell SAINT (Bruker, 2004); data reduction: SAINT; 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: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536810043412/om2374sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810043412/om2374Isup2.hkl
A mixture of ferulic acid (0.388 g, 2 mmol) and aniline (0.19 ml, 2 mmol) was stirred with methanol (20 ml) for 0.5 h at room temperature. After several days colourless block-like crystals, suitable for X-ray
were obtained by slow evaporation of the solution.All H atoms were placed at calculated positions and were treated as riding, with C—H = 0.93–0.96 Å, O—H = 0.82 Å, and N—H = 0.89 Å, respectively, and with Uiso(H) = 1.2 or 1.5Ueq(C,O,N).
3-(4-Hydroxy-3-methoxyphenyl)-2-propenoic acid, also known as ferulic acid, is one of the main endogenous phenolic acids in plant kingdom (Liyama et al., 1994). More attention was paid to the structural modification of ferulic acid owing to its extensive bioactivities including anti-platelet aggregation, anti-oxidation, anti-inflammation, anti-tumor, anti-mutagenicity, antibiosis and immunity enchancement (Hirabayashi et al., 1995; Ogiwara et al., 2002). A series of ferulic acid derivatives were designed and synthesized, such as their salts,
and and some of them show the better bioactivities than those of ferulic acid (Nomura et al., 2003; Ou et al., 2003). The molecular and of the title compound is presented in this article.In the
of the title compound, illustrated in Fig. 1, there are an anilinium cation and one singly deprotonated 3-(4-hydroxy-3-methoxyphenyl)prop-2-enoate anion. The bond distances and angles in the title compound are normal (Ni et al., 2007; Smith et al., 2004). In the crystal the cations and anions are self-assembled by various O—H···O and N—H···O hydrogen bonds (Table 1 and Fig. 2) to form a superamolecular network. The network can be viewed as the linkages of two-dimensional 3-(4-hydroxy-3-methoxyphenyl)prop-2-enoate and anilinium layers.For ferulic acid [3-(4-hydroxy-3-methoxyphenyl)-2-propenoic acid] and its pharmacological activity, see: Hirabayashi et al. (1995); Liyama et al. (1994); Nomura et al. (2003); Ogiwara et al. (2002); Ou et al. (2003). For related literature [Please state how they are related], see: Ni et al. (2007); Smith et al. (2004).
Data collection: APEX2 (Bruker, 2004); cell
SAINT (Bruker, 2004); data reduction: SAINT (Bruker, 2004); 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: SHELXL97 (Sheldrick, 2008).C6H8N+·C10H9O4− | F(000) = 608 |
Mr = 287.31 | Dx = 1.292 Mg m−3 |
Orthorhombic, P212121 | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: P 2ac 2ab | Cell parameters from 2062 reflections |
a = 6.2047 (7) Å | θ = 2.6–23.1° |
b = 8.2668 (9) Å | µ = 0.09 mm−1 |
c = 28.790 (3) Å | T = 296 K |
V = 1476.7 (3) Å3 | Block, colourless |
Z = 4 | 0.30 × 0.28 × 0.25 mm |
Bruker APEXII area-detector diffractometer | 1325 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.031 |
Graphite monochromator | θmax = 25.2°, θmin = 2.6° |
φ and ω scans | h = −7→7 |
7666 measured reflections | k = −9→6 |
1586 independent reflections | l = −32→34 |
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)] = 0.032 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.079 | H-atom parameters constrained |
S = 1.04 | w = 1/[σ2(Fo2) + (0.0375P)2 + 0.170P] where P = (Fo2 + 2Fc2)/3 |
1586 reflections | (Δ/σ)max = 0.001 |
193 parameters | Δρmax = 0.11 e Å−3 |
0 restraints | Δρmin = −0.11 e Å−3 |
C6H8N+·C10H9O4− | V = 1476.7 (3) Å3 |
Mr = 287.31 | Z = 4 |
Orthorhombic, P212121 | Mo Kα radiation |
a = 6.2047 (7) Å | µ = 0.09 mm−1 |
b = 8.2668 (9) Å | T = 296 K |
c = 28.790 (3) Å | 0.30 × 0.28 × 0.25 mm |
Bruker APEXII area-detector diffractometer | 1325 reflections with I > 2σ(I) |
7666 measured reflections | Rint = 0.031 |
1586 independent reflections |
R[F2 > 2σ(F2)] = 0.032 | 0 restraints |
wR(F2) = 0.079 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.11 e Å−3 |
1586 reflections | Δρmin = −0.11 e Å−3 |
193 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 | ||
C1 | 0.3231 (5) | 0.4376 (3) | 0.92787 (9) | 0.0626 (7) | |
H1 | 0.2083 | 0.5019 | 0.9183 | 0.075* | |
C2 | 0.3238 (7) | 0.2733 (4) | 0.91830 (10) | 0.0799 (10) | |
H2 | 0.2092 | 0.2272 | 0.9022 | 0.096* | |
C3 | 0.4919 (7) | 0.1789 (4) | 0.93232 (10) | 0.0794 (10) | |
H3 | 0.4919 | 0.0687 | 0.9258 | 0.095* | |
C4 | 0.6609 (7) | 0.2469 (4) | 0.95602 (11) | 0.0792 (9) | |
H4 | 0.7752 | 0.1823 | 0.9657 | 0.095* | |
C5 | 0.6628 (5) | 0.4108 (3) | 0.96573 (9) | 0.0609 (7) | |
H5 | 0.7778 | 0.4570 | 0.9817 | 0.073* | |
C6 | 0.4920 (4) | 0.5044 (3) | 0.95139 (7) | 0.0422 (5) | |
C7 | 0.8501 (4) | 1.0202 (3) | 0.79047 (7) | 0.0434 (6) | |
C8 | 0.6513 (4) | 1.0959 (3) | 0.79226 (7) | 0.0494 (6) | |
H8 | 0.5777 | 1.1016 | 0.8204 | 0.059* | |
C9 | 0.5597 (4) | 1.1639 (3) | 0.75247 (8) | 0.0509 (6) | |
H9 | 0.4288 | 1.2185 | 0.7543 | 0.061* | |
C10 | 0.6649 (4) | 1.1496 (3) | 0.71042 (7) | 0.0447 (6) | |
C11 | 0.8608 (4) | 1.0664 (3) | 0.70800 (7) | 0.0417 (6) | |
C12 | 0.9540 (4) | 1.0060 (3) | 0.74787 (8) | 0.0443 (6) | |
H12 | 1.0876 | 0.9553 | 0.7463 | 0.053* | |
C13 | 0.9606 (4) | 0.9557 (3) | 0.83187 (7) | 0.0451 (6) | |
H13 | 1.1098 | 0.9473 | 0.8299 | 0.054* | |
C14 | 0.8738 (4) | 0.9089 (3) | 0.87121 (7) | 0.0437 (6) | |
H14 | 0.7250 | 0.9167 | 0.8744 | 0.052* | |
C15 | 0.9992 (4) | 0.8447 (3) | 0.91045 (7) | 0.0375 (5) | |
C16 | 1.1413 (5) | 0.9702 (4) | 0.65865 (9) | 0.0711 (9) | |
H16A | 1.1252 | 0.8615 | 0.6698 | 0.107* | |
H16B | 1.2524 | 1.0238 | 0.6760 | 0.107* | |
H16C | 1.1798 | 0.9681 | 0.6264 | 0.107* | |
N1 | 0.4930 (3) | 0.6767 (2) | 0.96199 (5) | 0.0411 (5) | |
H1A | 0.4750 | 0.6908 | 0.9924 | 0.062* | |
H1B | 0.3863 | 0.7252 | 0.9467 | 0.062* | |
H1C | 0.6184 | 0.7195 | 0.9533 | 0.062* | |
O1 | 1.2000 (3) | 0.8328 (2) | 0.90760 (5) | 0.0467 (4) | |
O2 | 0.8938 (3) | 0.8013 (2) | 0.94615 (5) | 0.0536 (5) | |
O3 | 0.5753 (3) | 1.2193 (3) | 0.67198 (5) | 0.0578 (5) | |
H3A | 0.6647 | 1.2222 | 0.6510 | 0.087* | |
O4 | 0.9441 (3) | 1.0547 (2) | 0.66423 (5) | 0.0535 (5) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0678 (18) | 0.0590 (18) | 0.0609 (16) | −0.0043 (16) | −0.0183 (15) | −0.0011 (14) |
C2 | 0.105 (3) | 0.0604 (19) | 0.0737 (19) | −0.014 (2) | −0.012 (2) | −0.0107 (17) |
C3 | 0.116 (3) | 0.0483 (17) | 0.074 (2) | 0.002 (2) | 0.025 (2) | −0.0048 (16) |
C4 | 0.084 (2) | 0.063 (2) | 0.091 (2) | 0.0227 (19) | 0.013 (2) | 0.0134 (17) |
C5 | 0.0573 (18) | 0.0609 (18) | 0.0644 (16) | 0.0078 (16) | −0.0051 (14) | 0.0067 (15) |
C6 | 0.0482 (14) | 0.0475 (14) | 0.0309 (11) | 0.0000 (12) | 0.0042 (11) | 0.0030 (10) |
C7 | 0.0476 (14) | 0.0472 (14) | 0.0353 (11) | 0.0003 (12) | −0.0062 (11) | 0.0048 (10) |
C8 | 0.0545 (16) | 0.0578 (15) | 0.0358 (12) | 0.0016 (14) | 0.0036 (12) | 0.0035 (12) |
C9 | 0.0449 (14) | 0.0592 (16) | 0.0486 (13) | 0.0042 (13) | −0.0044 (12) | 0.0063 (12) |
C10 | 0.0461 (14) | 0.0510 (14) | 0.0370 (12) | −0.0037 (13) | −0.0093 (11) | 0.0065 (11) |
C11 | 0.0457 (14) | 0.0442 (13) | 0.0352 (11) | −0.0001 (12) | −0.0049 (10) | 0.0044 (11) |
C12 | 0.0443 (14) | 0.0475 (14) | 0.0411 (12) | 0.0034 (12) | −0.0045 (10) | 0.0058 (11) |
C13 | 0.0459 (14) | 0.0503 (14) | 0.0391 (11) | 0.0010 (12) | −0.0033 (11) | 0.0009 (11) |
C14 | 0.0428 (14) | 0.0536 (14) | 0.0348 (11) | 0.0025 (12) | −0.0047 (10) | −0.0010 (11) |
C15 | 0.0464 (14) | 0.0374 (12) | 0.0286 (11) | −0.0038 (12) | −0.0052 (10) | −0.0022 (9) |
C16 | 0.0608 (19) | 0.101 (2) | 0.0509 (15) | 0.0196 (19) | 0.0077 (14) | 0.0040 (16) |
N1 | 0.0404 (10) | 0.0512 (12) | 0.0317 (9) | 0.0005 (10) | −0.0024 (8) | 0.0043 (8) |
O1 | 0.0436 (10) | 0.0584 (11) | 0.0381 (8) | 0.0026 (9) | −0.0049 (7) | 0.0040 (8) |
O2 | 0.0523 (10) | 0.0775 (12) | 0.0310 (8) | −0.0123 (10) | −0.0013 (7) | 0.0068 (8) |
O3 | 0.0490 (10) | 0.0807 (12) | 0.0439 (9) | 0.0115 (10) | −0.0081 (8) | 0.0188 (10) |
O4 | 0.0577 (11) | 0.0665 (11) | 0.0364 (8) | 0.0128 (10) | −0.0014 (8) | 0.0083 (8) |
C1—C6 | 1.365 (4) | C10—O3 | 1.366 (3) |
C1—C2 | 1.386 (4) | C10—C11 | 1.399 (3) |
C1—H1 | 0.9300 | C11—O4 | 1.365 (3) |
C2—C3 | 1.363 (5) | C11—C12 | 1.379 (3) |
C2—H2 | 0.9300 | C12—H12 | 0.9300 |
C3—C4 | 1.372 (5) | C13—C14 | 1.313 (3) |
C3—H3 | 0.9300 | C13—H13 | 0.9300 |
C4—C5 | 1.384 (4) | C14—C15 | 1.470 (3) |
C4—H4 | 0.9300 | C14—H14 | 0.9300 |
C5—C6 | 1.375 (4) | C15—O1 | 1.253 (3) |
C5—H5 | 0.9300 | C15—O2 | 1.270 (3) |
C6—N1 | 1.457 (3) | C16—O4 | 1.418 (3) |
C7—C8 | 1.384 (4) | C16—H16A | 0.9600 |
C7—C12 | 1.390 (3) | C16—H16B | 0.9600 |
C7—C13 | 1.475 (3) | C16—H16C | 0.9600 |
C8—C9 | 1.397 (3) | N1—H1A | 0.8900 |
C8—H8 | 0.9300 | N1—H1B | 0.8900 |
C9—C10 | 1.381 (3) | N1—H1C | 0.8900 |
C9—H9 | 0.9300 | O3—H3A | 0.8200 |
C6—C1—C2 | 119.5 (3) | O4—C11—C12 | 125.8 (2) |
C6—C1—H1 | 120.3 | O4—C11—C10 | 114.18 (19) |
C2—C1—H1 | 120.3 | C12—C11—C10 | 120.1 (2) |
C3—C2—C1 | 120.3 (3) | C11—C12—C7 | 120.6 (2) |
C3—C2—H2 | 119.8 | C11—C12—H12 | 119.7 |
C1—C2—H2 | 119.8 | C7—C12—H12 | 119.7 |
C2—C3—C4 | 119.8 (3) | C14—C13—C7 | 127.8 (2) |
C2—C3—H3 | 120.1 | C14—C13—H13 | 116.1 |
C4—C3—H3 | 120.1 | C7—C13—H13 | 116.1 |
C3—C4—C5 | 120.6 (3) | C13—C14—C15 | 123.5 (2) |
C3—C4—H4 | 119.7 | C13—C14—H14 | 118.2 |
C5—C4—H4 | 119.7 | C15—C14—H14 | 118.2 |
C6—C5—C4 | 118.9 (3) | O1—C15—O2 | 122.9 (2) |
C6—C5—H5 | 120.6 | O1—C15—C14 | 120.3 (2) |
C4—C5—H5 | 120.6 | O2—C15—C14 | 116.8 (2) |
C1—C6—C5 | 120.9 (2) | O4—C16—H16A | 109.5 |
C1—C6—N1 | 120.2 (2) | O4—C16—H16B | 109.5 |
C5—C6—N1 | 118.9 (2) | H16A—C16—H16B | 109.5 |
C8—C7—C12 | 119.0 (2) | O4—C16—H16C | 109.5 |
C8—C7—C13 | 123.2 (2) | H16A—C16—H16C | 109.5 |
C12—C7—C13 | 117.8 (2) | H16B—C16—H16C | 109.5 |
C7—C8—C9 | 120.9 (2) | C6—N1—H1A | 109.5 |
C7—C8—H8 | 119.5 | C6—N1—H1B | 109.5 |
C9—C8—H8 | 119.5 | H1A—N1—H1B | 109.5 |
C10—C9—C8 | 119.5 (2) | C6—N1—H1C | 109.5 |
C10—C9—H9 | 120.3 | H1A—N1—H1C | 109.5 |
C8—C9—H9 | 120.3 | H1B—N1—H1C | 109.5 |
O3—C10—C9 | 118.8 (2) | C10—O3—H3A | 109.5 |
O3—C10—C11 | 121.4 (2) | C11—O4—C16 | 117.76 (18) |
C9—C10—C11 | 119.8 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O2i | 0.89 | 1.84 | 2.721 (2) | 170 |
N1—H1B···O1ii | 0.89 | 1.84 | 2.724 (2) | 170 |
N1—H1C···O2 | 0.89 | 1.85 | 2.730 (3) | 170 |
O3—H3A···O1iii | 0.82 | 2.09 | 2.841 (2) | 151 |
O3—H3A···O4 | 0.82 | 2.25 | 2.671 (2) | 112 |
Symmetry codes: (i) x−1/2, −y+3/2, −z+2; (ii) x−1, y, z; (iii) −x+2, y+1/2, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | C6H8N+·C10H9O4− |
Mr | 287.31 |
Crystal system, space group | Orthorhombic, P212121 |
Temperature (K) | 296 |
a, b, c (Å) | 6.2047 (7), 8.2668 (9), 28.790 (3) |
V (Å3) | 1476.7 (3) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.30 × 0.28 × 0.25 |
Data collection | |
Diffractometer | Bruker APEXII area-detector |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7666, 1586, 1325 |
Rint | 0.031 |
(sin θ/λ)max (Å−1) | 0.599 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.032, 0.079, 1.04 |
No. of reflections | 1586 |
No. of parameters | 193 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.11, −0.11 |
Computer programs: APEX2 (Bruker, 2004), SAINT (Bruker, 2004), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1—H1A···O2i | 0.89 | 1.84 | 2.721 (2) | 169.8 |
N1—H1B···O1ii | 0.89 | 1.84 | 2.724 (2) | 170.3 |
N1—H1C···O2 | 0.89 | 1.85 | 2.730 (3) | 169.8 |
O3—H3A···O1iii | 0.82 | 2.09 | 2.841 (2) | 151.3 |
O3—H3A···O4 | 0.82 | 2.25 | 2.671 (2) | 112.2 |
Symmetry codes: (i) x−1/2, −y+3/2, −z+2; (ii) x−1, y, z; (iii) −x+2, y+1/2, −z+3/2. |
Acknowledgements
The authors acknowledge South China Normal University for supporting this work.
References
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3-(4-Hydroxy-3-methoxyphenyl)-2-propenoic acid, also known as ferulic acid, is one of the main endogenous phenolic acids in plant kingdom (Liyama et al., 1994). More attention was paid to the structural modification of ferulic acid owing to its extensive bioactivities including anti-platelet aggregation, anti-oxidation, anti-inflammation, anti-tumor, anti-mutagenicity, antibiosis and immunity enchancement (Hirabayashi et al., 1995; Ogiwara et al., 2002). A series of ferulic acid derivatives were designed and synthesized, such as their salts, esters, ethers and amides, and some of them show the better bioactivities than those of ferulic acid (Nomura et al., 2003; Ou et al., 2003). The molecular and crystal structure of the title compound is presented in this article.
In the asymmetric unit of the title compound, illustrated in Fig. 1, there are an anilinium cation and one singly deprotonated 3-(4-hydroxy-3-methoxyphenyl)prop-2-enoate anion. The bond distances and angles in the title compound are normal (Ni et al., 2007; Smith et al., 2004). In the crystal the cations and anions are self-assembled by various O—H···O and N—H···O hydrogen bonds (Table 1 and Fig. 2) to form a superamolecular network. The network can be viewed as the linkages of two-dimensional 3-(4-hydroxy-3-methoxyphenyl)prop-2-enoate and anilinium layers.