organic compounds
2-(2,5-Dioxotetrahydrofuran-3-yl)isoindoline-1,3-dione
aSchool of Life Sciences, Shandong University of Technology, Zibo 255049, People's Republic of China
*Correspondence e-mail: njuqss@yahoo.com.cn
In the title compound, C12H7NO5, the dihedral angle between the isoindole-1,3-dione plane and the least-squares plane of the furan ring is 89.2 (2)°. In the molecules are linked through intermolecular C—H⋯O hydrogen bonds, forming centrosymmetric dimers.
Related literature
For related literature, see: Abdel & Atef (2004); Allen et al. (1987); King & Kidd (1951); Qian et al. (2006).
Experimental
Crystal data
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Refinement
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Data collection: CAD-4 Software (Enraf–Nonius, 1989); cell CAD-4 Software; data reduction: XCAD4 (Harms & Wocadlo, 1995); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536808024094/bt2757sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808024094/bt2757Isup2.hkl
The title compound was synthesized according to a literature method (Qian et al., 2006). L-aspartic acid (13.3 g, 0.1 mol) reacted with N-carboethoxy phthalimide (21.9 g, 0.1 mol) in 200 ml of water and 23.3 g (0.21 mol) of sodium carbonate. As a result, 21.3 g of the N-phthaloyl-L-aspartic acid was obtained (yield, 81%). 10.8 g of the title compound was obtained through heating of N-phthaloyl-L-aspartic acid (13.2 g, 0.05 mol) in 30 ml of acetic anhydride under reflux for 20 minutes. Subsequently, 0.1 g of the title compound was dissolved in acetic acid (20 ml). Single crystals suitable for X-ray diffraction were obtained by spontaneous evaporation of the solvent.
All H atoms were geometrically positioned and constrained to ride on their parent atoms with C—H distance in the range 0.93–0.98 Å, with Uiso(H) = 1.2Ueq(C).
Data collection: CAD-4 Software (Enraf–Nonius, 1989); cell
CAD-4 Software (Enraf–Nonius, 1989); data reduction: XCAD4 (Harms & Wocadlo, 1995); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. The structure of the title compound, showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 35% probability level. |
C12H7NO5 | F(000) = 504 |
Mr = 245.19 | Dx = 1.579 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 25 reflections |
a = 12.129 (2) Å | θ = 10–13° |
b = 5.1385 (10) Å | µ = 0.13 mm−1 |
c = 16.818 (3) Å | T = 293 K |
β = 100.21 (3)° | Prism, colorless |
V = 1031.6 (4) Å3 | 0.30 × 0.30 × 0.05 mm |
Z = 4 |
Enraf–Nonius CAD-4 diffractometer | 1492 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.040 |
Graphite monochromator | θmax = 25.3°, θmin = 1.9° |
ω/2θ scans | h = 0→14 |
Absorption correction: ψ scan (SADABS; Sheldrick, 1996) | k = 0→6 |
Tmin = 0.963, Tmax = 0.994 | l = −20→19 |
1963 measured reflections | 3 standard reflections every 200 reflections |
1870 independent reflections | intensity decay: none |
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)] = 0.043 | H-atom parameters constrained |
wR(F2) = 0.133 | w = 1/[σ2(Fo2) + (0.0585P)2 + 0.7913P] where P = (Fo2 + 2Fc2)/3 |
S = 1.07 | (Δ/σ)max < 0.001 |
1870 reflections | Δρmax = 0.31 e Å−3 |
164 parameters | Δρmin = −0.21 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: 0.055 (5) |
C12H7NO5 | V = 1031.6 (4) Å3 |
Mr = 245.19 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 12.129 (2) Å | µ = 0.13 mm−1 |
b = 5.1385 (10) Å | T = 293 K |
c = 16.818 (3) Å | 0.30 × 0.30 × 0.05 mm |
β = 100.21 (3)° |
Enraf–Nonius CAD-4 diffractometer | 1492 reflections with I > 2σ(I) |
Absorption correction: ψ scan (SADABS; Sheldrick, 1996) | Rint = 0.040 |
Tmin = 0.963, Tmax = 0.994 | 3 standard reflections every 200 reflections |
1963 measured reflections | intensity decay: none |
1870 independent reflections |
R[F2 > 2σ(F2)] = 0.043 | 0 restraints |
wR(F2) = 0.133 | H-atom parameters constrained |
S = 1.07 | Δρmax = 0.31 e Å−3 |
1870 reflections | Δρmin = −0.21 e Å−3 |
164 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 | ||
N | 0.76293 (16) | −0.0485 (4) | 0.04496 (11) | 0.0347 (5) | |
O1 | 0.88949 (15) | −0.3867 (4) | 0.04821 (11) | 0.0466 (5) | |
C1 | 0.9239 (2) | 0.0386 (6) | −0.18134 (16) | 0.0487 (7) | |
H1A | 0.9710 | 0.0066 | −0.2183 | 0.058* | |
O2 | 0.65372 (15) | 0.3125 (3) | 0.00935 (10) | 0.0430 (5) | |
C2 | 0.8492 (2) | 0.2458 (6) | −0.19425 (15) | 0.0481 (7) | |
H2A | 0.8462 | 0.3474 | −0.2404 | 0.058* | |
C3 | 0.7791 (2) | 0.3047 (5) | −0.14002 (14) | 0.0409 (6) | |
H3A | 0.7292 | 0.4436 | −0.1485 | 0.049* | |
O3 | 0.44844 (18) | 0.1302 (5) | 0.13241 (15) | 0.0729 (7) | |
O4 | 0.81433 (16) | 0.2349 (4) | 0.20434 (11) | 0.0523 (6) | |
C4 | 0.78694 (19) | 0.1471 (5) | −0.07286 (13) | 0.0332 (6) | |
O5 | 0.62761 (15) | 0.2101 (3) | 0.18451 (10) | 0.0424 (5) | |
C5 | 0.85913 (19) | −0.0636 (5) | −0.06052 (13) | 0.0341 (6) | |
C6 | 0.9295 (2) | −0.1217 (5) | −0.11412 (15) | 0.0413 (6) | |
H6A | 0.9786 | −0.2621 | −0.1057 | 0.050* | |
C7 | 0.84523 (19) | −0.1944 (5) | 0.01570 (14) | 0.0339 (6) | |
C8 | 0.7244 (2) | 0.1603 (5) | −0.00526 (13) | 0.0338 (6) | |
C9 | 0.7191 (2) | −0.1091 (5) | 0.11716 (13) | 0.0339 (6) | |
H9A | 0.7604 | −0.2566 | 0.1449 | 0.041* | |
C10 | 0.7312 (2) | 0.1266 (5) | 0.17350 (14) | 0.0388 (6) | |
C11 | 0.5426 (2) | 0.0628 (6) | 0.13833 (15) | 0.0445 (7) | |
C12 | 0.5937 (2) | −0.1667 (5) | 0.10354 (15) | 0.0388 (6) | |
H12A | 0.5639 | −0.1847 | 0.0464 | 0.047* | |
H12B | 0.5791 | −0.3258 | 0.1309 | 0.047* |
U11 | U22 | U33 | U12 | U13 | U23 | |
N | 0.0446 (11) | 0.0297 (10) | 0.0303 (10) | 0.0057 (9) | 0.0077 (8) | 0.0006 (8) |
O1 | 0.0528 (11) | 0.0376 (10) | 0.0481 (11) | 0.0136 (9) | 0.0056 (8) | 0.0040 (8) |
C1 | 0.0487 (15) | 0.0611 (18) | 0.0394 (14) | −0.0068 (14) | 0.0165 (12) | −0.0077 (14) |
O2 | 0.0536 (11) | 0.0369 (10) | 0.0398 (10) | 0.0133 (9) | 0.0117 (8) | 0.0027 (8) |
C2 | 0.0594 (17) | 0.0513 (17) | 0.0336 (13) | −0.0100 (14) | 0.0082 (12) | 0.0012 (12) |
C3 | 0.0535 (15) | 0.0341 (13) | 0.0339 (13) | −0.0014 (12) | 0.0045 (11) | −0.0007 (11) |
O3 | 0.0529 (13) | 0.0827 (17) | 0.0840 (16) | 0.0099 (13) | 0.0147 (11) | −0.0248 (14) |
O4 | 0.0595 (12) | 0.0508 (12) | 0.0444 (11) | −0.0101 (10) | 0.0036 (9) | −0.0093 (9) |
C4 | 0.0392 (12) | 0.0296 (12) | 0.0302 (12) | −0.0021 (11) | 0.0046 (10) | −0.0041 (10) |
O5 | 0.0583 (11) | 0.0337 (10) | 0.0353 (9) | 0.0070 (8) | 0.0090 (8) | −0.0050 (7) |
C5 | 0.0388 (12) | 0.0292 (12) | 0.0328 (12) | −0.0040 (10) | 0.0023 (10) | −0.0057 (10) |
C6 | 0.0406 (13) | 0.0396 (14) | 0.0432 (14) | 0.0004 (12) | 0.0061 (11) | −0.0071 (12) |
C7 | 0.0367 (12) | 0.0276 (12) | 0.0351 (12) | 0.0009 (11) | 0.0001 (10) | −0.0051 (10) |
C8 | 0.0411 (13) | 0.0285 (12) | 0.0309 (12) | 0.0018 (11) | 0.0036 (10) | −0.0012 (10) |
C9 | 0.0468 (14) | 0.0266 (12) | 0.0287 (11) | 0.0047 (11) | 0.0073 (10) | 0.0014 (10) |
C10 | 0.0555 (16) | 0.0324 (13) | 0.0277 (12) | 0.0030 (12) | 0.0048 (11) | 0.0021 (10) |
C11 | 0.0523 (16) | 0.0446 (16) | 0.0386 (14) | 0.0034 (13) | 0.0135 (12) | −0.0014 (12) |
C12 | 0.0505 (15) | 0.0286 (13) | 0.0386 (13) | −0.0008 (11) | 0.0110 (11) | 0.0002 (10) |
N—C8 | 1.394 (3) | C4—C5 | 1.385 (3) |
N—C7 | 1.405 (3) | C4—C8 | 1.476 (3) |
N—C9 | 1.443 (3) | O5—C10 | 1.370 (3) |
O1—C7 | 1.208 (3) | O5—C11 | 1.398 (3) |
C1—C6 | 1.391 (4) | C5—C6 | 1.380 (3) |
C1—C2 | 1.390 (4) | C5—C7 | 1.483 (3) |
C1—H1A | 0.9300 | C6—H6A | 0.9300 |
O2—C8 | 1.217 (3) | C9—C12 | 1.526 (3) |
C2—C3 | 1.387 (4) | C9—C10 | 1.529 (3) |
C2—H2A | 0.9300 | C9—H9A | 0.9800 |
C3—C4 | 1.379 (3) | C11—C12 | 1.499 (4) |
C3—H3A | 0.9300 | C12—H12A | 0.9700 |
O3—C11 | 1.180 (3) | C12—H12B | 0.9700 |
O4—C10 | 1.188 (3) | ||
C8—N—C7 | 112.40 (19) | O1—C7—C5 | 130.7 (2) |
C8—N—C9 | 122.82 (19) | N—C7—C5 | 104.9 (2) |
C7—N—C9 | 124.76 (19) | O2—C8—N | 123.0 (2) |
C6—C1—C2 | 121.1 (2) | O2—C8—C4 | 131.4 (2) |
C6—C1—H1A | 119.4 | N—C8—C4 | 105.6 (2) |
C2—C1—H1A | 119.4 | N—C9—C12 | 114.92 (19) |
C3—C2—C1 | 121.6 (2) | N—C9—C10 | 109.97 (19) |
C3—C2—H2A | 119.2 | C12—C9—C10 | 103.30 (19) |
C1—C2—H2A | 119.2 | N—C9—H9A | 109.5 |
C4—C3—C2 | 116.7 (2) | C12—C9—H9A | 109.5 |
C4—C3—H3A | 121.7 | C10—C9—H9A | 109.5 |
C2—C3—H3A | 121.7 | O4—C10—O5 | 121.5 (2) |
C3—C4—C5 | 122.1 (2) | O4—C10—C9 | 128.5 (2) |
C3—C4—C8 | 129.3 (2) | O5—C10—C9 | 110.0 (2) |
C5—C4—C8 | 108.6 (2) | O3—C11—O5 | 119.7 (3) |
C10—O5—C11 | 111.05 (19) | O3—C11—C12 | 131.2 (3) |
C6—C5—C4 | 121.3 (2) | O5—C11—C12 | 109.1 (2) |
C6—C5—C7 | 130.2 (2) | C11—C12—C9 | 105.0 (2) |
C4—C5—C7 | 108.5 (2) | C11—C12—H12A | 110.7 |
C5—C6—C1 | 117.2 (2) | C9—C12—H12A | 110.7 |
C5—C6—H6A | 121.4 | C11—C12—H12B | 110.7 |
C1—C6—H6A | 121.4 | C9—C12—H12B | 110.7 |
O1—C7—N | 124.3 (2) | H12A—C12—H12B | 108.8 |
C6—C1—C2—C3 | 1.4 (4) | C9—N—C8—C4 | −177.8 (2) |
C1—C2—C3—C4 | −0.2 (4) | C3—C4—C8—O2 | −1.9 (4) |
C2—C3—C4—C5 | −1.5 (4) | C5—C4—C8—O2 | 179.3 (3) |
C2—C3—C4—C8 | 179.9 (2) | C3—C4—C8—N | 178.5 (2) |
C3—C4—C5—C6 | 1.9 (4) | C5—C4—C8—N | −0.3 (3) |
C8—C4—C5—C6 | −179.2 (2) | C8—N—C9—C12 | 59.4 (3) |
C3—C4—C5—C7 | −178.7 (2) | C7—N—C9—C12 | −118.4 (2) |
C8—C4—C5—C7 | 0.2 (3) | C8—N—C9—C10 | −56.6 (3) |
C4—C5—C6—C1 | −0.7 (4) | C7—N—C9—C10 | 125.6 (2) |
C7—C5—C6—C1 | −179.9 (2) | C11—O5—C10—O4 | 176.2 (2) |
C2—C1—C6—C5 | −1.0 (4) | C11—O5—C10—C9 | −2.7 (3) |
C8—N—C7—O1 | −178.7 (2) | N—C9—C10—O4 | −61.0 (3) |
C9—N—C7—O1 | −0.7 (4) | C12—C9—C10—O4 | 175.9 (3) |
C8—N—C7—C5 | −0.2 (3) | N—C9—C10—O5 | 117.8 (2) |
C9—N—C7—C5 | 177.9 (2) | C12—C9—C10—O5 | −5.3 (2) |
C6—C5—C7—O1 | −2.3 (4) | C10—O5—C11—O3 | −170.0 (3) |
C4—C5—C7—O1 | 178.4 (2) | C10—O5—C11—C12 | 9.9 (3) |
C6—C5—C7—N | 179.3 (2) | O3—C11—C12—C9 | 167.1 (3) |
C4—C5—C7—N | 0.0 (2) | O5—C11—C12—C9 | −12.7 (3) |
C7—N—C8—O2 | −179.4 (2) | N—C9—C12—C11 | −109.3 (2) |
C9—N—C8—O2 | 2.6 (4) | C10—C9—C12—C11 | 10.5 (2) |
C7—N—C8—C4 | 0.3 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
C9—H9A···O1 | 0.98 | 2.54 | 2.915 (3) | 103 (4) |
C12—H12B···O5i | 0.97 | 2.58 | 3.476 (3) | 153 (4) |
Symmetry code: (i) x, y−1, z. |
Experimental details
Crystal data | |
Chemical formula | C12H7NO5 |
Mr | 245.19 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 293 |
a, b, c (Å) | 12.129 (2), 5.1385 (10), 16.818 (3) |
β (°) | 100.21 (3) |
V (Å3) | 1031.6 (4) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.13 |
Crystal size (mm) | 0.30 × 0.30 × 0.05 |
Data collection | |
Diffractometer | Enraf–Nonius CAD-4 diffractometer |
Absorption correction | ψ scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.963, 0.994 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 1963, 1870, 1492 |
Rint | 0.040 |
(sin θ/λ)max (Å−1) | 0.601 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.043, 0.133, 1.07 |
No. of reflections | 1870 |
No. of parameters | 164 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.31, −0.21 |
Computer programs: CAD-4 Software (Enraf–Nonius, 1989), XCAD4 (Harms & Wocadlo, 1995), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), XP in SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
C9—H9A···O1 | 0.98 | 2.54 | 2.915 (3) | 103 (4) |
C12—H12B···O5i | 0.97 | 2.58 | 3.476 (3) | 153 (4) |
Symmetry code: (i) x, y−1, z. |
Acknowledgements
This project was sponsored by the Doctoral Research Foundation (Shandong University of Technology, People's Republic of China).
References
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Enraf–Nonius (1989). CAD-4 Software. Enraf–Nonius, Delft, The Netherlands. Google Scholar
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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.
The title compound has attracted attention for its anticonvulsant activity (Abdel & Atef, 2004). In addition, it was an intermediate for the synthesis of aspartic acid (King & Kidd, 1951). Here, we report its crystal structure.
The dihedral angle between the isoindole-1,3-dione plane and the plane of cyclopentane-1,3-dione is 90.0 (2)°. All the bond lengths are within normal ranges (Allen et al., 1987) and comparable to the values observed in other similar compounds (Qian et al., 2006). In the crystal structure, the molecules are linked through intermolecular C–H···O hydrogen bonds, forming centrosymmetric dimers.