organic compounds
2-(Biphenyl-4-yloxy)acetic acid
aHainan Provincial Key Laboratory of Tropical Pharmaceutical Herb Chemistry, School of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, People's Republic of China
*Correspondence e-mail: enjuwang@163.com
In the title compound, C14H12O3, the phenyl and benzene rings make a dihedral angle of 47.51 (4)°. In the crystal, molecules are dimerized by double O—H⋯O hydrogen bonds, forming centrosymmetric R22(8) ring motifs. The dimers are interlinked by C—H⋯π interactions into zigzag layers.
Related literature
For biological studies of biphenyl compounds, see: Kamoda et al. (2006); Kumar et al. (2008); Malamas et al. (2000). For related structures, see: Ali et al. (2008); Cao (2009); Margraf et al. (2009); Li et al. (2009); Charbonneau & Delugeard (1977); Brett et al. (1999). For hydrogen-bond motifs, see: Etter (1990).
Experimental
Crystal data
|
Refinement
|
Data collection: SMART (Bruker, 2000); cell SAINT (Bruker, 2000); 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: SHELXTL.
Supporting information
10.1107/S1600536811002777/bh2330sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811002777/bh2330Isup2.hkl
The crystals of (biphenyl-4-yloxy)acetic acid were unexpectedly obtained in the preparation of (biphenyl-4-yloxy)acetic acid-β-cyclodextrin The experiment scheme is as follows: An ethanol solution of (biphenyl-4-yloxy)acetic acid (1 mmol, 5 ml) was added dropwise to an aqueous solution of β-cyclodextrin (1 mmol, 50 ml) and stirred at 50 °C for 6 h. The resulting solution was filtered and then stored at 40 °C. Colorless crystals suitable for the single X-ray diffraction were obtained after one week.
H atoms bonded to C were positioned geometrically with aromatic C—H = 0.93 Å and aliphatic C—H = 0.97 Å. Their displacement parameters were set at Uiso(H) = 1.2Ueq(C). The hydroxyl H atom was found in a Fourier map and refined with the constraint of O—H = 0.82 Å, Uiso(H) = 1.2Ueq(O).
Data collection: SMART (Bruker, 2000); cell
SAINT (Bruker, 2000); data reduction: SAINT (Bruker, 2000); 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: SHELXTL (Sheldrick, 2008).C14H12O3 | F(000) = 480 |
Mr = 228.24 | Dx = 1.380 Mg m−3 |
Monoclinic, P21/n | Cu Kα radiation, λ = 1.54178 Å |
Hall symbol: -P 2yn | Cell parameters from 11208 reflections |
a = 5.9118 (1) Å | θ = 4.6–76.4° |
b = 28.5786 (3) Å | µ = 0.79 mm−1 |
c = 6.9017 (1) Å | T = 293 K |
β = 109.631 (2)° | Plate, colourless |
V = 1098.27 (3) Å3 | 0.43 × 0.42 × 0.40 mm |
Z = 4 |
Bruker SMART CCD area-detector diffractometer | 2306 independent reflections |
Radiation source: fine-focus sealed tube | 2223 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.028 |
ϕ and ω scans | θmax = 77.0°, θmin = 6.2° |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | h = −7→7 |
Tmin = 0.727, Tmax = 0.742 | k = −36→35 |
11989 measured reflections | l = −7→8 |
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)] = 0.047 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.139 | H-atom parameters constrained |
S = 1.12 | w = 1/[σ2(Fo2) + (0.0818P)2 + 0.2839P] where P = (Fo2 + 2Fc2)/3 |
2306 reflections | (Δ/σ)max < 0.001 |
155 parameters | Δρmax = 0.21 e Å−3 |
0 restraints | Δρmin = −0.23 e Å−3 |
0 constraints |
C14H12O3 | V = 1098.27 (3) Å3 |
Mr = 228.24 | Z = 4 |
Monoclinic, P21/n | Cu Kα radiation |
a = 5.9118 (1) Å | µ = 0.79 mm−1 |
b = 28.5786 (3) Å | T = 293 K |
c = 6.9017 (1) Å | 0.43 × 0.42 × 0.40 mm |
β = 109.631 (2)° |
Bruker SMART CCD area-detector diffractometer | 2306 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | 2223 reflections with I > 2σ(I) |
Tmin = 0.727, Tmax = 0.742 | Rint = 0.028 |
11989 measured reflections |
R[F2 > 2σ(F2)] = 0.047 | 0 restraints |
wR(F2) = 0.139 | H-atom parameters constrained |
S = 1.12 | Δρmax = 0.21 e Å−3 |
2306 reflections | Δρmin = −0.23 e Å−3 |
155 parameters |
x | y | z | Uiso*/Ueq | ||
O3 | 0.54080 (16) | 0.06250 (3) | 0.05489 (14) | 0.0328 (3) | |
O2 | 0.39398 (17) | 0.02975 (3) | −0.32997 (15) | 0.0364 (3) | |
O1 | 0.76170 (18) | 0.00213 (4) | −0.29161 (15) | 0.0380 (3) | |
H1 | 0.6955 | −0.0065 | −0.4105 | 0.057* | |
C8 | 0.4590 (2) | 0.11281 (5) | 0.2933 (2) | 0.0321 (3) | |
H8 | 0.2999 | 0.1139 | 0.2069 | 0.039* | |
C3 | 0.6254 (2) | 0.08550 (4) | 0.24154 (19) | 0.0303 (3) | |
C7 | 0.5320 (2) | 0.13840 (4) | 0.4743 (2) | 0.0321 (3) | |
H7 | 0.4203 | 0.1565 | 0.5085 | 0.039* | |
C6 | 0.7706 (2) | 0.13749 (4) | 0.6066 (2) | 0.0302 (3) | |
C5 | 0.9320 (2) | 0.10893 (5) | 0.5536 (2) | 0.0335 (3) | |
H5 | 1.0905 | 0.1073 | 0.6411 | 0.040* | |
C2 | 0.7191 (2) | 0.04138 (5) | −0.0118 (2) | 0.0328 (3) | |
H2A | 0.7931 | 0.0156 | 0.0790 | 0.039* | |
H2B | 0.8430 | 0.0641 | −0.0063 | 0.039* | |
C9 | 0.8549 (2) | 0.16649 (4) | 0.7961 (2) | 0.0309 (3) | |
C1 | 0.6092 (2) | 0.02357 (4) | −0.2277 (2) | 0.0314 (3) | |
C4 | 0.8611 (2) | 0.08296 (5) | 0.3732 (2) | 0.0342 (3) | |
H4 | 0.9711 | 0.0640 | 0.3408 | 0.041* | |
C11 | 1.1469 (3) | 0.22017 (5) | 1.0158 (2) | 0.0403 (3) | |
H11 | 1.2858 | 0.2379 | 1.0417 | 0.048* | |
C10 | 1.0651 (2) | 0.19293 (5) | 0.8395 (2) | 0.0351 (3) | |
H10 | 1.1512 | 0.1923 | 0.7489 | 0.042* | |
C13 | 0.8131 (3) | 0.19494 (5) | 1.1128 (2) | 0.0379 (3) | |
H13 | 0.7290 | 0.1954 | 1.2051 | 0.045* | |
C14 | 0.7289 (2) | 0.16808 (5) | 0.9348 (2) | 0.0335 (3) | |
H14 | 0.5876 | 0.1510 | 0.9079 | 0.040* | |
C12 | 1.0218 (3) | 0.22096 (5) | 1.1534 (2) | 0.0399 (3) | |
H12 | 1.0777 | 0.2389 | 1.2725 | 0.048* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O3 | 0.0336 (5) | 0.0349 (5) | 0.0283 (5) | 0.0004 (4) | 0.0085 (4) | −0.0068 (4) |
O2 | 0.0357 (5) | 0.0383 (5) | 0.0318 (5) | 0.0054 (4) | 0.0067 (4) | −0.0019 (4) |
O1 | 0.0385 (5) | 0.0448 (6) | 0.0299 (5) | 0.0059 (4) | 0.0104 (4) | −0.0061 (4) |
C8 | 0.0306 (6) | 0.0336 (6) | 0.0309 (7) | −0.0010 (5) | 0.0084 (5) | −0.0019 (5) |
C3 | 0.0363 (7) | 0.0274 (6) | 0.0267 (6) | −0.0019 (5) | 0.0100 (5) | −0.0024 (4) |
C7 | 0.0333 (6) | 0.0314 (6) | 0.0325 (7) | 0.0011 (5) | 0.0120 (5) | −0.0018 (5) |
C6 | 0.0344 (6) | 0.0268 (6) | 0.0295 (6) | −0.0010 (5) | 0.0106 (5) | −0.0005 (5) |
C5 | 0.0325 (6) | 0.0337 (6) | 0.0317 (7) | 0.0014 (5) | 0.0074 (5) | −0.0034 (5) |
C2 | 0.0341 (6) | 0.0342 (6) | 0.0294 (6) | 0.0013 (5) | 0.0097 (5) | −0.0043 (5) |
C9 | 0.0351 (6) | 0.0264 (6) | 0.0296 (6) | 0.0024 (5) | 0.0089 (5) | −0.0004 (5) |
C1 | 0.0367 (7) | 0.0285 (6) | 0.0287 (6) | 0.0017 (5) | 0.0106 (5) | 0.0011 (5) |
C4 | 0.0355 (7) | 0.0324 (6) | 0.0339 (7) | 0.0041 (5) | 0.0107 (5) | −0.0030 (5) |
C11 | 0.0404 (7) | 0.0360 (7) | 0.0398 (8) | −0.0042 (6) | 0.0072 (6) | −0.0056 (6) |
C10 | 0.0358 (7) | 0.0335 (6) | 0.0350 (7) | −0.0006 (5) | 0.0107 (6) | −0.0021 (5) |
C13 | 0.0517 (8) | 0.0333 (7) | 0.0293 (7) | 0.0033 (6) | 0.0146 (6) | 0.0000 (5) |
C14 | 0.0398 (7) | 0.0293 (6) | 0.0318 (7) | −0.0004 (5) | 0.0123 (5) | −0.0004 (5) |
C12 | 0.0515 (8) | 0.0326 (7) | 0.0301 (7) | 0.0004 (6) | 0.0064 (6) | −0.0055 (5) |
O3—C3 | 1.3816 (15) | C2—C1 | 1.5002 (17) |
O3—C2 | 1.4190 (16) | C2—H2A | 0.9700 |
O2—C1 | 1.2427 (16) | C2—H2B | 0.9700 |
O1—C1 | 1.2848 (16) | C9—C14 | 1.3971 (18) |
O1—H1 | 0.8200 | C9—C10 | 1.3982 (19) |
C8—C7 | 1.3852 (18) | C4—H4 | 0.9300 |
C8—C3 | 1.3933 (18) | C11—C12 | 1.386 (2) |
C8—H8 | 0.9300 | C11—C10 | 1.3873 (19) |
C3—C4 | 1.3862 (19) | C11—H11 | 0.9300 |
C7—C6 | 1.3996 (19) | C10—H10 | 0.9300 |
C7—H7 | 0.9300 | C13—C12 | 1.386 (2) |
C6—C5 | 1.3946 (18) | C13—C14 | 1.3914 (19) |
C6—C9 | 1.4858 (17) | C13—H13 | 0.9300 |
C5—C4 | 1.3880 (18) | C14—H14 | 0.9300 |
C5—H5 | 0.9300 | C12—H12 | 0.9300 |
C3—O3—C2 | 115.42 (10) | C14—C9—C6 | 121.53 (12) |
C1—O1—H1 | 109.5 | C10—C9—C6 | 120.07 (12) |
C7—C8—C3 | 119.62 (12) | O2—C1—O1 | 125.12 (12) |
C7—C8—H8 | 120.2 | O2—C1—C2 | 122.36 (12) |
C3—C8—H8 | 120.2 | O1—C1—C2 | 112.52 (11) |
O3—C3—C4 | 123.75 (12) | C3—C4—C5 | 119.61 (12) |
O3—C3—C8 | 116.11 (11) | C3—C4—H4 | 120.2 |
C4—C3—C8 | 120.14 (12) | C5—C4—H4 | 120.2 |
C8—C7—C6 | 121.25 (12) | C12—C11—C10 | 120.08 (14) |
C8—C7—H7 | 119.4 | C12—C11—H11 | 120.0 |
C6—C7—H7 | 119.4 | C10—C11—H11 | 120.0 |
C5—C6—C7 | 117.92 (12) | C11—C10—C9 | 120.93 (13) |
C5—C6—C9 | 120.04 (12) | C11—C10—H10 | 119.5 |
C7—C6—C9 | 122.03 (11) | C9—C10—H10 | 119.5 |
C4—C5—C6 | 121.42 (12) | C12—C13—C14 | 120.31 (13) |
C4—C5—H5 | 119.3 | C12—C13—H13 | 119.8 |
C6—C5—H5 | 119.3 | C14—C13—H13 | 119.8 |
O3—C2—C1 | 110.21 (11) | C13—C14—C9 | 120.52 (13) |
O3—C2—H2A | 109.6 | C13—C14—H14 | 119.7 |
C1—C2—H2A | 109.6 | C9—C14—H14 | 119.7 |
O3—C2—H2B | 109.6 | C11—C12—C13 | 119.75 (13) |
C1—C2—H2B | 109.6 | C11—C12—H12 | 120.1 |
H2A—C2—H2B | 108.1 | C13—C12—H12 | 120.1 |
C14—C9—C10 | 118.40 (12) | ||
C2—O3—C3—C4 | −9.49 (18) | O3—C2—C1—O2 | 3.58 (18) |
C2—O3—C3—C8 | 169.80 (11) | O3—C2—C1—O1 | −176.89 (11) |
C7—C8—C3—O3 | −177.55 (11) | O3—C3—C4—C5 | 177.22 (11) |
C7—C8—C3—C4 | 1.77 (19) | C8—C3—C4—C5 | −2.0 (2) |
C3—C8—C7—C6 | 0.2 (2) | C6—C5—C4—C3 | 0.4 (2) |
C8—C7—C6—C5 | −1.8 (2) | C12—C11—C10—C9 | 0.9 (2) |
C8—C7—C6—C9 | 176.93 (12) | C14—C9—C10—C11 | −0.1 (2) |
C7—C6—C5—C4 | 1.5 (2) | C6—C9—C10—C11 | −179.91 (12) |
C9—C6—C5—C4 | −177.23 (12) | C12—C13—C14—C9 | 0.8 (2) |
C3—O3—C2—C1 | −172.07 (10) | C10—C9—C14—C13 | −0.80 (19) |
C5—C6—C9—C14 | −133.31 (14) | C6—C9—C14—C13 | 179.04 (12) |
C7—C6—C9—C14 | 48.02 (18) | C10—C11—C12—C13 | −0.8 (2) |
C5—C6—C9—C10 | 46.52 (18) | C14—C13—C12—C11 | 0.0 (2) |
C7—C6—C9—C10 | −132.15 (14) |
Cg is the centroid of the C9–C14 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O2i | 0.82 | 1.81 | 2.6235 (13) | 169 |
C12—H12···Cgii | 0.93 | 2.86 | 3.6392 (16) | 142 |
Symmetry codes: (i) −x+1, −y, −z−1; (ii) x+1/2, −y+1/2, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C14H12O3 |
Mr | 228.24 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 293 |
a, b, c (Å) | 5.9118 (1), 28.5786 (3), 6.9017 (1) |
β (°) | 109.631 (2) |
V (Å3) | 1098.27 (3) |
Z | 4 |
Radiation type | Cu Kα |
µ (mm−1) | 0.79 |
Crystal size (mm) | 0.43 × 0.42 × 0.40 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2000) |
Tmin, Tmax | 0.727, 0.742 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 11989, 2306, 2223 |
Rint | 0.028 |
(sin θ/λ)max (Å−1) | 0.632 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.047, 0.139, 1.12 |
No. of reflections | 2306 |
No. of parameters | 155 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.21, −0.23 |
Computer programs: SMART (Bruker, 2000), SAINT (Bruker, 2000), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
Cg is the centroid of the C9–C14 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1···O2i | 0.82 | 1.81 | 2.6235 (13) | 169 |
C12—H12···Cgii | 0.93 | 2.86 | 3.6392 (16) | 142 |
Symmetry codes: (i) −x+1, −y, −z−1; (ii) x+1/2, −y+1/2, z+1/2. |
Acknowledgements
We are grateful for financial support from the Natural Science Foundation of Hainan Province (No. 808145)
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.
Biphenyl moieties have been found to act as pharmacophores in many biological studies such as antimycobacterial testing (Kamoda et al., 2006). Several derivatives of biphenyl-4-yloxy acetic acid are reported to be potential drugs with anti-inflammatory activity, analgesic activity and lower ulcerogenic potential (Kumar et al., 2008). A series of benzofuran/benzothiophene biphenyl oxo-acetic acids act as potent inhibitors of protein tyrosine phosphatase 1B with good oral antihyperglycemic activity (Malamas et al., 2000). In this paper we report the crystal structure of the title compound, (I).
In the crystal of the title compound (Fig. 1), two carboxyl groups form a pair of hydrogen bonds in cyclic R22(8) arrangement (Etter, 1990). The pairs of hydrogen bonds link the molecules into inversion dimers. The dimers are arranged in a herringbone pattern with an angle of 66.15 (1)°. The adjacent dimers are linked via C—H···π interactions with the H···π distance of 2.86 Å (Fig. 2). Some crystal structures containing biphenyl moiety have been reported. The two benzene rings are usually nearly coplanar for the biphenyl compounds without 2-substituents (Ali et al., 2008; Cao, 2009; Margraf et al., 2009; Li et al., 2009; Charbonneau & Delugeard, 1977). But the title compound displays a twisted conformation with a dihedral angle of 47.51 (4)° between the phenyl and benzene planes. Planar conformations will be adopted by biphenyl compounds in the ground states. It is the crystal packing forces that produce the planar conformations for the biphenyl compounds (Brett et al., 1999).