organic compounds
5-(Hydroxymethyl)furan-2-carboxylic acid
aLaboratory of Microbial Pharmaceutical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
*Correspondence e-mail: xuqingyan@xmu.edu.cn
In the title compound, C6H6O4, the furan ring is nearly coplanar with the carboxyl group, the maximum atomic deviation being 0.0248 (9) Å. The crystal packing is stabilized by classical O—H⋯O and weak C—H⋯O hydrogen bonding.
Related literature
For the biochemical significance of the title compound, see: Mrochek & Rainey (1972).
Experimental
Crystal data
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Data collection
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Refinement
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Data collection: SMART (Bruker, 2001); cell SAINT (Bruker, 2001); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536811019489/xu5218sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536811019489/xu5218Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536811019489/xu5218Isup3.cml
The title compound was obtained from the
of Aspergillus sp. by The strain was isolated from a soil sample collected from Jinjiang salt-field, Fujian, China. The strain was cultured using half sea-water Potato Dextrose Agar medium at 28 degrees celsius for 14 days. The (40 liters) was extracted with ethyl acetate (EtOAc). The EtOAc extract (18.0 g) eluted with methanol-water (30%, 50%, 70%, 100%; V/V) to yield 12 fractions by RP-18. Fraction 1 was further puried by Sephadex LH-20 (140 g) with methanol. Then 1–4 eluted with acetone by Sephadex LH-20 (80 g) then the main components further puried by silica-gel to afford the title compound (8.0 mg).The carboxyl and hydroxy H atoms were located in a difference Fourier map and refined isotropically. Other H atoms were positioned geometrically and were treated as riding on their parent atoms, with C—H distances of 0.93–0.97 Å, and Uiso(H) = 1.2Ueq(C).
Data collection: SMART (Bruker, 2001); cell
SAINT (Bruker, 2001); data reduction: SAINT (Bruker, 2001); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 1997); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).C6H6O4 | F(000) = 592 |
Mr = 142.11 | Dx = 1.545 Mg m−3 |
Orthorhombic, Pbca | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 10988 reflections |
a = 10.838 (3) Å | θ = 2.6–25.2° |
b = 7.2601 (17) Å | µ = 0.13 mm−1 |
c = 15.526 (4) Å | T = 294 K |
V = 1221.7 (5) Å3 | Block, colourless |
Z = 8 | 0.32 × 0.22 × 0.12 mm |
Bruker SMART CCD area-detector diffractometer | 1033 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.025 |
Graphite monochromator | θmax = 25.2°, θmin = 2.6° |
ϕ and ω scans | h = −12→12 |
5637 measured reflections | k = −8→8 |
1098 independent reflections | l = −18→13 |
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)] = 0.035 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.090 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.08 | w = 1/[σ2(Fo2) + (0.0457P)2 + 0.5232P] where P = (Fo2 + 2Fc2)/3 |
1098 reflections | (Δ/σ)max = 0.001 |
99 parameters | Δρmax = 0.19 e Å−3 |
0 restraints | Δρmin = −0.21 e Å−3 |
C6H6O4 | V = 1221.7 (5) Å3 |
Mr = 142.11 | Z = 8 |
Orthorhombic, Pbca | Mo Kα radiation |
a = 10.838 (3) Å | µ = 0.13 mm−1 |
b = 7.2601 (17) Å | T = 294 K |
c = 15.526 (4) Å | 0.32 × 0.22 × 0.12 mm |
Bruker SMART CCD area-detector diffractometer | 1033 reflections with I > 2σ(I) |
5637 measured reflections | Rint = 0.025 |
1098 independent reflections |
R[F2 > 2σ(F2)] = 0.035 | 0 restraints |
wR(F2) = 0.090 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.08 | Δρmax = 0.19 e Å−3 |
1098 reflections | Δρmin = −0.21 e Å−3 |
99 parameters |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds 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 | 0.93802 (10) | 0.18266 (16) | 0.31353 (7) | 0.0276 (3) | |
O2 | 0.84194 (9) | 0.14583 (14) | 0.49749 (6) | 0.0216 (3) | |
O3 | 0.68657 (9) | 0.30625 (16) | 0.68473 (7) | 0.0300 (3) | |
O4 | 0.88618 (9) | 0.26469 (16) | 0.65427 (7) | 0.0282 (3) | |
C5 | 0.74292 (13) | 0.19201 (19) | 0.54835 (9) | 0.0204 (3) | |
C6 | 0.79370 (13) | 0.08250 (18) | 0.42169 (8) | 0.0208 (3) | |
C7 | 0.88366 (14) | 0.0247 (2) | 0.35516 (9) | 0.0262 (4) | |
H7A | 0.9481 | −0.0487 | 0.3817 | 0.031* | |
H7B | 0.8424 | −0.0510 | 0.3125 | 0.031* | |
C8 | 0.76830 (13) | 0.2598 (2) | 0.63503 (9) | 0.0219 (3) | |
C9 | 0.66913 (13) | 0.0865 (2) | 0.42436 (9) | 0.0243 (4) | |
H9A | 0.6155 | 0.0498 | 0.3809 | 0.029* | |
C10 | 0.63590 (14) | 0.1574 (2) | 0.50616 (9) | 0.0242 (3) | |
H10A | 0.5564 | 0.1765 | 0.5268 | 0.029* | |
H4A | 0.898 (2) | 0.290 (3) | 0.7143 (16) | 0.060 (6)* | |
H1A | 1.018 (2) | 0.179 (3) | 0.3204 (13) | 0.051 (6)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0203 (6) | 0.0392 (7) | 0.0235 (6) | −0.0018 (5) | 0.0007 (4) | 0.0040 (5) |
O2 | 0.0178 (5) | 0.0265 (6) | 0.0205 (5) | 0.0012 (4) | 0.0005 (4) | −0.0004 (4) |
O3 | 0.0213 (5) | 0.0445 (7) | 0.0242 (6) | 0.0059 (5) | 0.0039 (4) | −0.0031 (5) |
O4 | 0.0188 (5) | 0.0425 (7) | 0.0231 (6) | 0.0034 (5) | −0.0003 (4) | −0.0070 (5) |
C5 | 0.0189 (7) | 0.0215 (7) | 0.0209 (7) | 0.0024 (5) | 0.0044 (6) | 0.0035 (5) |
C6 | 0.0257 (8) | 0.0178 (7) | 0.0188 (7) | −0.0001 (6) | −0.0015 (6) | 0.0010 (5) |
C7 | 0.0273 (8) | 0.0281 (8) | 0.0232 (8) | 0.0002 (6) | 0.0018 (6) | −0.0014 (6) |
C8 | 0.0188 (7) | 0.0223 (7) | 0.0246 (7) | 0.0016 (6) | 0.0018 (6) | 0.0030 (6) |
C9 | 0.0237 (8) | 0.0251 (8) | 0.0242 (8) | −0.0019 (6) | −0.0038 (6) | −0.0003 (6) |
C10 | 0.0179 (7) | 0.0282 (8) | 0.0265 (8) | 0.0002 (6) | 0.0021 (6) | 0.0022 (6) |
O1—C7 | 1.4421 (19) | C5—C8 | 1.459 (2) |
O1—H1A | 0.88 (2) | C6—C9 | 1.351 (2) |
O2—C6 | 1.3675 (17) | C6—C7 | 1.481 (2) |
O2—C5 | 1.3739 (16) | C7—H7A | 0.9700 |
O3—C8 | 1.2224 (18) | C7—H7B | 0.9700 |
O4—C8 | 1.3124 (18) | C9—C10 | 1.417 (2) |
O4—H4A | 0.96 (2) | C9—H9A | 0.9300 |
C5—C10 | 1.355 (2) | C10—H10A | 0.9300 |
C7—O1—H1A | 109.0 (13) | O1—C7—H7B | 109.5 |
C6—O2—C5 | 106.15 (11) | C6—C7—H7B | 109.5 |
C8—O4—H4A | 111.1 (13) | H7A—C7—H7B | 108.1 |
C10—C5—O2 | 110.21 (12) | O3—C8—O4 | 123.66 (14) |
C10—C5—C8 | 132.03 (13) | O3—C8—C5 | 122.60 (13) |
O2—C5—C8 | 117.72 (12) | O4—C8—C5 | 113.74 (12) |
C9—C6—O2 | 110.38 (12) | C6—C9—C10 | 106.82 (13) |
C9—C6—C7 | 133.27 (13) | C6—C9—H9A | 126.6 |
O2—C6—C7 | 116.35 (12) | C10—C9—H9A | 126.6 |
O1—C7—C6 | 110.88 (12) | C5—C10—C9 | 106.44 (13) |
O1—C7—H7A | 109.5 | C5—C10—H10A | 126.8 |
C6—C7—H7A | 109.5 | C9—C10—H10A | 126.8 |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1A···O3i | 0.87 (2) | 1.83 (2) | 2.6951 (16) | 169.2 (19) |
O4—H4A···O1ii | 0.96 (2) | 1.61 (2) | 2.5643 (17) | 171 (2) |
C7—H7A···O4iii | 0.97 | 2.45 | 3.265 (2) | 142 |
Symmetry codes: (i) x+1/2, −y+1/2, −z+1; (ii) x, −y+1/2, z+1/2; (iii) −x+2, −y, −z+1. |
Experimental details
Crystal data | |
Chemical formula | C6H6O4 |
Mr | 142.11 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 294 |
a, b, c (Å) | 10.838 (3), 7.2601 (17), 15.526 (4) |
V (Å3) | 1221.7 (5) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.13 |
Crystal size (mm) | 0.32 × 0.22 × 0.12 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 5637, 1098, 1033 |
Rint | 0.025 |
(sin θ/λ)max (Å−1) | 0.599 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.035, 0.090, 1.08 |
No. of reflections | 1098 |
No. of parameters | 99 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.19, −0.21 |
Computer programs: SMART (Bruker, 2001), SAINT (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 1997).
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1A···O3i | 0.87 (2) | 1.83 (2) | 2.6951 (16) | 169.2 (19) |
O4—H4A···O1ii | 0.96 (2) | 1.61 (2) | 2.5643 (17) | 171 (2) |
C7—H7A···O4iii | 0.97 | 2.45 | 3.265 (2) | 142 |
Symmetry codes: (i) x+1/2, −y+1/2, −z+1; (ii) x, −y+1/2, z+1/2; (iii) −x+2, −y, −z+1. |
Acknowledgements
The authors acknowledge financial support by the Fundamental Research Funds for the Central Universities, China (2010121092).
References
Bruker (2001). SAINT and SMART. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Farrugia, L. J. (1997). J. Appl. Cryst. 30, 565. CrossRef IUCr Journals Google Scholar
Mrochek, J. & Rainey, W. (1972). Clin. Chem. 18, 821-828. CAS PubMed Web of Science Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
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In the molecular structure of the compound, all the carbon atoms locate in the same plane. The crystal packing is stabilized by O—H···O and weak C—H···O hydrogen bonding (Table 1).