organic compounds
(1R,1′S)-1,1′-Dihydroxy-1,1′-biisobenzofuran-3,3′(1H,1′H)-dione
aMicroscale Science Institute, Weifang University, Weifang 261061, People's Republic of China, and bNew Materials and Function Coordination Chemistry Laboratory, Qingdao University of Science and Technology, Qingdao 266042, People's Republic of China
*Correspondence e-mail: ffjian2008@163.com
In the title compound, C16H10O6, the complete molecule is generated by a crystallographic centre of symmetry. In the crystal, O—H⋯O hydrogen bonds link the molecules into (100) sheets and C—H⋯O links also occur.
Related literature
For background to et al. (2006). For a related structure, see: Wang et al. (2001).
as natural products, see: PedrosaExperimental
Crystal data
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Data collection
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Refinement
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Data collection: SMART (Bruker, 1997); cell SAINT (Bruker, 1997); 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
https://doi.org/10.1107/S1600536809044961/hb5170sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536809044961/hb5170Isup2.hkl
Phthalic anhydride (0.05 mol) was dissolved in dichloromethane (100 ml). Then, AlCl3 (0.05 mol) was added. The mixture was stirred at room temperature and the whole reaction was under the protection of nitrogen. After 5 h, the reaction was stopped and the mixture poured into ice-water. The organic layer was collected and then was dried with MgSO4. Finally, the organic layer was concentrated by rotary vacuum evaporation to obtain yellow solids. Yellow blocks of (I) were obtailed by recrystallization from acetonitrile at room temperature.
Substituted
(isobenzofuran-1(3H)-ones) represent an important class of natural products that posses significant biological properties (e.g. Pedrosa et al., 2006). As part of our search for new biologically active compounds, we unexpected obtained the title compound, (I), which is a typical derivative of phthalides.In the
of compound (I) (Fig. 1),there is an inversion center, which is located at the mid-point of C(8)—C(8 A) bond. All of the bond lengths and bond angles are in the normal ranges (Wang et al., 2001). In the there are a C—H···O intramolecular hydrogen bond and an O—H···O intermolecular hydrogen bond, which stabilize the molecule structure.For background to
as natural products, see: Pedrosa et al. (2006). For a related structure, see: Wang et al. (2001).Data collection: SMART (Bruker, 1997); cell
SAINT (Bruker, 1997); data reduction: SAINT (Bruker, 1997); 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).Fig. 1. The molecular structure of (I) with displacement ellipsoids drawn at the 30% probability level. |
C16H10O6 | F(000) = 308 |
Mr = 298.24 | Dx = 1.523 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ybc | Cell parameters from 1978 reflections |
a = 8.2260 (16) Å | θ = 3.5–27.5° |
b = 7.9690 (16) Å | µ = 0.12 mm−1 |
c = 10.859 (4) Å | T = 293 K |
β = 114.03 (2)° | Block, yellow |
V = 650.1 (3) Å3 | 0.16 × 0.12 × 0.10 mm |
Z = 2 |
Bruker SMART CCD diffractometer | 622 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.070 |
Graphite monochromator | θmax = 25.9°, θmin = 2.7° |
ω scans | h = 0→9 |
1352 measured reflections | k = −9→0 |
1263 independent reflections | l = −13→12 |
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)] = 0.056 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.170 | w = 1/[σ2(Fo2) + (0.0846P)2] where P = (Fo2 + 2Fc2)/3 |
S = 1.02 | (Δ/σ)max < 0.001 |
1263 reflections | Δρmax = 0.29 e Å−3 |
121 parameters | Δρmin = −0.30 e Å−3 |
0 restraints | Extinction correction: SHELXL97 (Sheldrick, 2008), Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.032 (10) |
C16H10O6 | V = 650.1 (3) Å3 |
Mr = 298.24 | Z = 2 |
Monoclinic, P21/c | Mo Kα radiation |
a = 8.2260 (16) Å | µ = 0.12 mm−1 |
b = 7.9690 (16) Å | T = 293 K |
c = 10.859 (4) Å | 0.16 × 0.12 × 0.10 mm |
β = 114.03 (2)° |
Bruker SMART CCD diffractometer | 622 reflections with I > 2σ(I) |
1352 measured reflections | Rint = 0.070 |
1263 independent reflections |
R[F2 > 2σ(F2)] = 0.056 | 0 restraints |
wR(F2) = 0.170 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.02 | Δρmax = 0.29 e Å−3 |
1263 reflections | Δρmin = −0.30 e Å−3 |
121 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 | 0.2464 (4) | 0.3665 (4) | 0.1300 (3) | 0.0549 (9) | |
O2 | 0.6822 (3) | 0.5869 (4) | 0.4778 (3) | 0.0410 (8) | |
O3 | 0.4600 (3) | 0.4127 (3) | 0.3342 (2) | 0.0376 (8) | |
C1 | 0.3733 (5) | 0.6782 (5) | 0.3741 (3) | 0.0314 (9) | |
C2 | 0.3529 (6) | 0.8340 (5) | 0.4222 (4) | 0.0398 (11) | |
C3 | 0.2204 (6) | 0.9369 (6) | 0.3366 (4) | 0.0467 (11) | |
C4 | 0.1095 (6) | 0.8864 (6) | 0.2078 (4) | 0.0484 (12) | |
C5 | 0.1271 (5) | 0.7290 (6) | 0.1605 (4) | 0.0408 (11) | |
C6 | 0.2612 (5) | 0.6276 (5) | 0.2465 (3) | 0.0316 (9) | |
C7 | 0.3138 (5) | 0.4584 (5) | 0.2258 (3) | 0.0359 (10) | |
C8 | 0.5080 (5) | 0.5441 (5) | 0.4390 (3) | 0.0330 (10) | |
H2A | 0.435 (5) | 0.868 (4) | 0.511 (4) | 0.036 (10)* | |
H4A | 0.014 (5) | 0.956 (6) | 0.148 (4) | 0.052 (12)* | |
H5A | 0.052 (5) | 0.686 (5) | 0.073 (3) | 0.036 (10)* | |
H3A | 0.206 (6) | 1.043 (7) | 0.368 (4) | 0.069 (15)* | |
H2B | 0.689 (9) | 0.669 (8) | 0.422 (6) | 0.12 (2)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.067 (2) | 0.049 (2) | 0.0364 (15) | 0.0066 (16) | 0.0091 (15) | −0.0153 (15) |
O2 | 0.0378 (16) | 0.0411 (18) | 0.0391 (15) | −0.0008 (14) | 0.0105 (13) | 0.0080 (13) |
O3 | 0.0498 (17) | 0.0327 (16) | 0.0273 (13) | 0.0054 (13) | 0.0125 (13) | −0.0038 (12) |
C1 | 0.036 (2) | 0.028 (2) | 0.0265 (18) | −0.0023 (16) | 0.0096 (17) | 0.0042 (16) |
C2 | 0.052 (3) | 0.032 (2) | 0.0280 (19) | −0.003 (2) | 0.008 (2) | −0.0055 (18) |
C3 | 0.057 (3) | 0.035 (3) | 0.046 (2) | 0.010 (2) | 0.018 (2) | 0.000 (2) |
C4 | 0.045 (3) | 0.049 (3) | 0.043 (2) | 0.011 (2) | 0.009 (2) | 0.008 (2) |
C5 | 0.039 (2) | 0.048 (3) | 0.028 (2) | 0.000 (2) | 0.0058 (18) | −0.003 (2) |
C6 | 0.035 (2) | 0.032 (2) | 0.0263 (18) | 0.0009 (17) | 0.0107 (17) | 0.0015 (16) |
C7 | 0.044 (2) | 0.037 (3) | 0.0251 (19) | −0.0039 (19) | 0.0119 (18) | −0.0032 (17) |
C8 | 0.037 (2) | 0.030 (2) | 0.0262 (18) | 0.0016 (18) | 0.0074 (17) | −0.0005 (16) |
O1—C7 | 1.207 (4) | C2—H2A | 0.96 (4) |
O2—C8 | 1.362 (4) | C3—C4 | 1.382 (6) |
O2—H2B | 0.91 (7) | C3—H3A | 0.94 (5) |
O3—C7 | 1.346 (4) | C4—C5 | 1.385 (6) |
O3—C8 | 1.477 (4) | C4—H4A | 0.96 (4) |
C1—C6 | 1.376 (5) | C5—C6 | 1.380 (5) |
C1—C2 | 1.383 (5) | C5—H5A | 0.96 (4) |
C1—C8 | 1.494 (5) | C6—C7 | 1.461 (5) |
C2—C3 | 1.378 (6) | C8—C8i | 1.551 (7) |
C8—O2—H2B | 108 (4) | C6—C5—H5A | 118 (2) |
C7—O3—C8 | 110.2 (3) | C4—C5—H5A | 125 (2) |
C6—C1—C2 | 120.6 (4) | C1—C6—C5 | 122.2 (4) |
C6—C1—C8 | 109.2 (3) | C1—C6—C7 | 107.9 (3) |
C2—C1—C8 | 130.2 (3) | C5—C6—C7 | 129.9 (3) |
C3—C2—C1 | 117.6 (4) | O1—C7—O3 | 121.5 (4) |
C3—C2—H2A | 123 (2) | O1—C7—C6 | 129.2 (4) |
C1—C2—H2A | 119 (2) | O3—C7—C6 | 109.3 (3) |
C2—C3—C4 | 121.6 (5) | O2—C8—O3 | 109.5 (3) |
C2—C3—H3A | 118 (3) | O2—C8—C1 | 116.8 (3) |
C4—C3—H3A | 120 (3) | O3—C8—C1 | 103.2 (3) |
C3—C4—C5 | 120.9 (4) | O2—C8—C8i | 107.1 (4) |
C3—C4—H4A | 122 (2) | O3—C8—C8i | 104.4 (4) |
C5—C4—H4A | 117 (2) | C1—C8—C8i | 115.0 (4) |
C6—C5—C4 | 117.1 (4) |
Symmetry code: (i) −x+1, −y+1, −z+1. |
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2B···O1ii | 0.91 (7) | 1.82 (7) | 2.691 (5) | 159 (5) |
C5—H5A···O1iii | 0.96 (3) | 2.58 (4) | 3.475 (5) | 155 (3) |
Symmetry codes: (ii) −x+1, y+1/2, −z+1/2; (iii) −x, −y+1, −z. |
Experimental details
Crystal data | |
Chemical formula | C16H10O6 |
Mr | 298.24 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 293 |
a, b, c (Å) | 8.2260 (16), 7.9690 (16), 10.859 (4) |
β (°) | 114.03 (2) |
V (Å3) | 650.1 (3) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.12 |
Crystal size (mm) | 0.16 × 0.12 × 0.10 |
Data collection | |
Diffractometer | Bruker SMART CCD |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 1352, 1263, 622 |
Rint | 0.070 |
(sin θ/λ)max (Å−1) | 0.615 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.056, 0.170, 1.02 |
No. of reflections | 1263 |
No. of parameters | 121 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.29, −0.30 |
Computer programs: SMART (Bruker, 1997), SAINT (Bruker, 1997), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
O2—H2B···O1i | 0.91 (7) | 1.82 (7) | 2.691 (5) | 159 (5) |
C5—H5A···O1ii | 0.96 (3) | 2.58 (4) | 3.475 (5) | 155 (3) |
Symmetry codes: (i) −x+1, y+1/2, −z+1/2; (ii) −x, −y+1, −z. |
Acknowledgements
The authors would like to thank the National Natural Science Foundation of Shandong (Y2007B14, Y2008B29) and Weifang University for a research grant.
References
Bruker (1997). SMART and SAINT. Bruker AXS Inc., Madison, Wisconsin, USA. Google Scholar
Pedrosa, R., Sayalero, S. & Vicente, M. (2006). Tetrahedron, 62, 10400–10404. Web of Science CrossRef CAS Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
Wang, X. Q., Song, M. Y. & Long, Y. C. (2001). J. Solid State Chem. 156, 325–330. Web of Science CSD CrossRef CAS Google Scholar
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Substituted phthalides (isobenzofuran-1(3H)-ones) represent an important class of natural products that posses significant biological properties (e.g. Pedrosa et al., 2006). As part of our search for new biologically active compounds, we unexpected obtained the title compound, (I), which is a typical derivative of phthalides.
In the crystal structure of compound (I) (Fig. 1),there is an inversion center, which is located at the mid-point of C(8)—C(8 A) bond. All of the bond lengths and bond angles are in the normal ranges (Wang et al., 2001). In the crystal lattice, there are a C—H···O intramolecular hydrogen bond and an O—H···O intermolecular hydrogen bond, which stabilize the molecule structure.