
Acta Cryst. (2010). E66, o1472 [ doi:10.1107/S1600536810018015 ]
The title compound, C13H14N2O3·0.5H2O, was synthesized by the condensation of methyl 3-aminopropionate with 3-trichloroacetylindole. The two organic molecules in the asymmetric unit are both close to planar, with r.m.s. deviations from the best fit plane through all of the non-H atoms of 0.004 (2) Å for molecule A and 0.006 (1) Å for molecule B. Also, the five- and six-membered rings of the indole systems are inclined at 1.67 (8) and 1.50 (8)° in molecules A and B, respectively. In the crystal structure, the organic molecules are connected by intermolecular N-H
O hydrogen bonds, forming chains. O-H
O and N-H
O hydrogen-bond interactions involving the water molecules interlink these chains, forming double chains approximately parallel to the a axis.
The hydrochloride salt of methyl 3-aminopropionate (0.70 g, 5 mmol) and 3-trichloroacetylindole (1.32 g, 5 mmol) were added to acetonitrile (10 ml), followed by the dropwise addition of triethylamine (1.2 ml). The mixture was stirred at room temperature for 16 h and then poured into water. After filtration, the precipitate was collected as a yellow solid. The impure product was dissolved in EtOH at room temperature. Light yellow monoclinic crystals suitable for X-ray analysis (m.p. 409 K, 86.2% yield) grew over a period of one week when the solution was exposed to the air.
All non-H atoms were refined with anisotropic displacement parameters. The H atoms bound to C and N were positioned geometrically [C—H = 0.99Å for CH2, 0.98Å for CH3, 0.95Å for CH(aromatic) and N—H = 0.88 Å] and refined using a riding model, with Uiso = 1.2Ueq (1.5Ueq for the methyl group) of the parent atom. The water H atoms were located in a difference Fourier map and were constrained in these positions with O—H = 0.8497 and 0.8533, and with Uiso = 1.5Ueq(O).
Data collection: SMART (Bruker, 1999); cell refinement: SAINT-Plus (Bruker, 1999); data reduction: SAINT-Plus (Bruker, 1999); 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).
| C13H14N2O3·0.5H2O | F(000) = 1080 |
| Mr = 255.27 | Dx = 1.359 Mg m−3 |
| Monoclinic, P21/n | Melting point: 409 K |
| Hall symbol: -P 2yn | Mo Kα radiation, λ = 0.71073 Å |
| a = 10.8220 (13) Å | Cell parameters from 7482 reflections |
| b = 9.7668 (12) Å | θ = 2.3–27.1° |
| c = 23.623 (3) Å | µ = 0.10 mm−1 |
| β = 92.422 (2)° | T = 173 K |
| V = 2494.6 (5) Å3 | Block, yellow |
| Z = 8 | 0.46 × 0.43 × 0.39 mm |
| Bruker SMART 1K CCD area-detector diffractometer | 5484 independent reflections |
| Radiation source: fine-focus sealed tube | 4349 reflections with I > 2σ(I) |
| graphite | Rint = 0.036 |
| φ and ω scans | θmax = 27.1°, θmin = 1.7° |
| Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −13→11 |
| Tmin = 0.955, Tmax = 0.962 | k = −8→12 |
| 13021 measured reflections | l = −30→30 |
| 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)] = 0.042 | Hydrogen site location: inferred from neighbouring sites |
| wR(F2) = 0.126 | H-atom parameters constrained |
| S = 1.07 | w = 1/[σ2(Fo2) + (0.0626P)2 + 0.3718P] where P = (Fo2 + 2Fc2)/3 |
| 5484 reflections | (Δ/σ)max = 0.001 |
| 336 parameters | Δρmax = 0.28 e Å−3 |
| 0 restraints | Δρmin = −0.23 e Å−3 |
| C13H14N2O3·0.5H2O | V = 2494.6 (5) Å3 |
| Mr = 255.27 | Z = 8 |
| Monoclinic, P21/n | Mo Kα radiation |
| a = 10.8220 (13) Å | µ = 0.10 mm−1 |
| b = 9.7668 (12) Å | T = 173 K |
| c = 23.623 (3) Å | 0.46 × 0.43 × 0.39 mm |
| β = 92.422 (2)° |
| Bruker SMART 1K CCD area-detector diffractometer | 5484 independent reflections |
| Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 4349 reflections with I > 2σ(I) |
| Tmin = 0.955, Tmax = 0.962 | Rint = 0.036 |
| 13021 measured reflections | θmax = 27.1° |
| R[F2 > 2σ(F2)] = 0.042 | H-atom parameters constrained |
| wR(F2) = 0.126 | Δρmax = 0.28 e Å−3 |
| S = 1.07 | Δρmin = −0.23 e Å−3 |
| 5484 reflections | Absolute structure: ? |
| 336 parameters | Flack parameter: ? |
| 0 restraints | Rogers parameter: ? |
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 | ||
| C1 | 0.80813 (13) | −0.08599 (15) | 0.03833 (6) | 0.0318 (3) | |
| H1 | 0.8269 | −0.0666 | 0.0002 | 0.038* | |
| C2 | 0.71838 (12) | −0.02181 (14) | 0.06810 (6) | 0.0272 (3) | |
| C3 | 0.72133 (12) | −0.08192 (14) | 0.12390 (6) | 0.0275 (3) | |
| C4 | 0.65431 (14) | −0.06387 (16) | 0.17297 (6) | 0.0341 (3) | |
| H4 | 0.5917 | 0.0041 | 0.1743 | 0.041* | |
| C5 | 0.68093 (15) | −0.14651 (17) | 0.21922 (6) | 0.0398 (4) | |
| H5 | 0.6352 | −0.1356 | 0.2524 | 0.048* | |
| C6 | 0.77349 (16) | −0.24579 (17) | 0.21840 (7) | 0.0421 (4) | |
| H6 | 0.7892 | −0.3012 | 0.2510 | 0.051* | |
| C7 | 0.84253 (14) | −0.26528 (16) | 0.17145 (7) | 0.0373 (3) | |
| H7 | 0.9061 | −0.3323 | 0.1710 | 0.045* | |
| C8 | 0.81497 (12) | −0.18210 (14) | 0.12439 (6) | 0.0297 (3) | |
| C9 | 0.62911 (13) | 0.08453 (15) | 0.04984 (6) | 0.0305 (3) | |
| C10 | 0.53881 (13) | 0.24140 (15) | −0.01892 (6) | 0.0311 (3) | |
| H10A | 0.5536 | 0.3226 | 0.0055 | 0.037* | |
| H10B | 0.4544 | 0.2074 | −0.0125 | 0.037* | |
| C11 | 0.54663 (13) | 0.28339 (15) | −0.08026 (6) | 0.0321 (3) | |
| H11A | 0.6316 | 0.3150 | −0.0872 | 0.039* | |
| H11B | 0.5286 | 0.2034 | −0.1050 | 0.039* | |
| C12 | 0.45597 (13) | 0.39641 (15) | −0.09478 (6) | 0.0308 (3) | |
| C13 | 0.39062 (16) | 0.55673 (18) | −0.16381 (7) | 0.0433 (4) | |
| H13A | 0.3959 | 0.6307 | −0.1358 | 0.065* | |
| H13B | 0.3056 | 0.5222 | −0.1670 | 0.065* | |
| H13C | 0.4145 | 0.5917 | −0.2007 | 0.065* | |
| C14 | 0.29377 (13) | 0.36840 (16) | 0.06182 (6) | 0.0341 (3) | |
| H14 | 0.3102 | 0.3692 | 0.0226 | 0.041* | |
| C15 | 0.21024 (12) | 0.45232 (14) | 0.08725 (6) | 0.0290 (3) | |
| C16 | 0.21441 (12) | 0.41712 (14) | 0.14649 (6) | 0.0284 (3) | |
| C17 | 0.15418 (14) | 0.46235 (16) | 0.19450 (6) | 0.0354 (3) | |
| H17 | 0.0928 | 0.5317 | 0.1913 | 0.042* | |
| C18 | 0.18574 (16) | 0.40417 (17) | 0.24654 (7) | 0.0432 (4) | |
| H18 | 0.1446 | 0.4335 | 0.2791 | 0.052* | |
| C19 | 0.27677 (16) | 0.30334 (18) | 0.25209 (7) | 0.0441 (4) | |
| H19 | 0.2977 | 0.2669 | 0.2885 | 0.053* | |
| C20 | 0.33663 (15) | 0.25580 (17) | 0.20592 (7) | 0.0399 (4) | |
| H20 | 0.3981 | 0.1866 | 0.2097 | 0.048* | |
| C21 | 0.30395 (13) | 0.31267 (15) | 0.15322 (6) | 0.0319 (3) | |
| C22 | 0.13786 (12) | 0.56060 (14) | 0.05926 (6) | 0.0290 (3) | |
| C23 | 0.08226 (13) | 0.69102 (15) | −0.02576 (6) | 0.0301 (3) | |
| H23A | 0.1048 | 0.7807 | −0.0088 | 0.036* | |
| H23B | −0.0072 | 0.6763 | −0.0211 | 0.036* | |
| C24 | 0.10799 (13) | 0.69297 (15) | −0.08814 (6) | 0.0328 (3) | |
| H24A | 0.1972 | 0.7095 | −0.0929 | 0.039* | |
| H24B | 0.0866 | 0.6029 | −0.1051 | 0.039* | |
| C25 | 0.03353 (13) | 0.80346 (15) | −0.11816 (6) | 0.0310 (3) | |
| C26 | −0.01206 (18) | 0.91058 (19) | −0.20573 (7) | 0.0497 (4) | |
| H26A | −0.1005 | 0.8992 | −0.1997 | 0.075* | |
| H26B | 0.0033 | 0.8978 | −0.2460 | 0.075* | |
| H26C | 0.0139 | 1.0028 | −0.1940 | 0.075* | |
| N1 | 0.86589 (11) | −0.18166 (13) | 0.07191 (5) | 0.0333 (3) | |
| H1A | 0.9265 | −0.2351 | 0.0617 | 0.040* | |
| N2 | 0.62849 (11) | 0.13484 (13) | −0.00271 (5) | 0.0317 (3) | |
| H2 | 0.6811 | 0.1044 | −0.0272 | 0.038* | |
| N3 | 0.34897 (12) | 0.28454 (14) | 0.10095 (5) | 0.0375 (3) | |
| H3 | 0.4048 | 0.2220 | 0.0940 | 0.045* | |
| N4 | 0.15203 (11) | 0.58337 (12) | 0.00368 (5) | 0.0320 (3) | |
| H4A | 0.2039 | 0.5327 | −0.0150 | 0.038* | |
| O1 | 0.55464 (11) | 0.12826 (13) | 0.08443 (5) | 0.0466 (3) | |
| O2 | 0.37724 (10) | 0.43840 (12) | −0.06434 (4) | 0.0405 (3) | |
| O3 | 0.47321 (10) | 0.44687 (12) | −0.14607 (4) | 0.0393 (3) | |
| O4 | 0.06489 (10) | 0.63299 (11) | 0.08581 (4) | 0.0396 (3) | |
| O5 | −0.03955 (10) | 0.87601 (12) | −0.09532 (4) | 0.0402 (3) | |
| O6 | 0.05767 (10) | 0.80986 (12) | −0.17246 (4) | 0.0413 (3) | |
| O1W | 0.20002 (11) | 0.89955 (13) | 0.09463 (5) | 0.0507 (3) | |
| H1B | 0.1537 | 0.8301 | 0.0994 | 0.076* | |
| H1C | 0.1592 | 0.9704 | 0.1031 | 0.076* |
| U11 | U22 | U33 | U12 | U13 | U23 | |
| C1 | 0.0314 (7) | 0.0312 (7) | 0.0330 (7) | 0.0062 (6) | 0.0043 (5) | 0.0008 (6) |
| C2 | 0.0245 (6) | 0.0256 (6) | 0.0314 (7) | 0.0024 (5) | 0.0014 (5) | −0.0018 (5) |
| C3 | 0.0257 (6) | 0.0249 (6) | 0.0317 (7) | 0.0006 (5) | −0.0005 (5) | −0.0032 (5) |
| C4 | 0.0347 (7) | 0.0341 (8) | 0.0338 (7) | 0.0017 (6) | 0.0035 (6) | −0.0060 (6) |
| C5 | 0.0477 (9) | 0.0418 (9) | 0.0303 (7) | −0.0043 (7) | 0.0050 (6) | −0.0012 (6) |
| C6 | 0.0537 (10) | 0.0372 (8) | 0.0349 (8) | −0.0022 (7) | −0.0066 (7) | 0.0058 (7) |
| C7 | 0.0395 (8) | 0.0307 (7) | 0.0411 (8) | 0.0050 (6) | −0.0056 (6) | 0.0029 (6) |
| C8 | 0.0279 (7) | 0.0270 (7) | 0.0341 (7) | 0.0006 (5) | −0.0005 (5) | −0.0024 (6) |
| C9 | 0.0288 (7) | 0.0297 (7) | 0.0331 (7) | 0.0048 (6) | −0.0001 (5) | −0.0024 (6) |
| C10 | 0.0319 (7) | 0.0298 (7) | 0.0315 (7) | 0.0067 (6) | −0.0002 (5) | −0.0002 (6) |
| C11 | 0.0298 (7) | 0.0335 (7) | 0.0329 (7) | 0.0029 (6) | 0.0000 (6) | −0.0017 (6) |
| C12 | 0.0311 (7) | 0.0322 (7) | 0.0289 (7) | −0.0009 (6) | −0.0006 (5) | −0.0002 (6) |
| C13 | 0.0491 (9) | 0.0457 (9) | 0.0353 (8) | 0.0135 (8) | 0.0020 (7) | 0.0086 (7) |
| C14 | 0.0337 (7) | 0.0351 (8) | 0.0337 (7) | 0.0100 (6) | 0.0053 (6) | 0.0028 (6) |
| C15 | 0.0259 (6) | 0.0268 (7) | 0.0345 (7) | 0.0041 (5) | 0.0027 (5) | 0.0002 (6) |
| C16 | 0.0268 (6) | 0.0243 (6) | 0.0341 (7) | 0.0008 (5) | 0.0004 (5) | 0.0001 (5) |
| C17 | 0.0389 (8) | 0.0294 (7) | 0.0381 (8) | 0.0072 (6) | 0.0045 (6) | −0.0022 (6) |
| C18 | 0.0561 (10) | 0.0393 (9) | 0.0347 (8) | 0.0068 (7) | 0.0078 (7) | −0.0024 (7) |
| C19 | 0.0588 (10) | 0.0387 (9) | 0.0344 (8) | 0.0063 (8) | −0.0015 (7) | 0.0052 (7) |
| C20 | 0.0431 (8) | 0.0356 (8) | 0.0409 (8) | 0.0106 (7) | −0.0001 (7) | 0.0071 (7) |
| C21 | 0.0304 (7) | 0.0303 (7) | 0.0352 (7) | 0.0044 (6) | 0.0033 (6) | 0.0009 (6) |
| C22 | 0.0263 (6) | 0.0261 (7) | 0.0348 (7) | 0.0031 (5) | 0.0018 (5) | 0.0007 (6) |
| C23 | 0.0299 (7) | 0.0281 (7) | 0.0324 (7) | 0.0049 (6) | 0.0010 (5) | 0.0012 (6) |
| C24 | 0.0331 (7) | 0.0315 (7) | 0.0341 (7) | 0.0051 (6) | 0.0048 (6) | −0.0007 (6) |
| C25 | 0.0335 (7) | 0.0303 (7) | 0.0293 (7) | −0.0022 (6) | 0.0032 (5) | −0.0012 (6) |
| C26 | 0.0705 (12) | 0.0463 (10) | 0.0321 (8) | 0.0024 (9) | −0.0013 (8) | 0.0089 (7) |
| N1 | 0.0307 (6) | 0.0316 (6) | 0.0378 (7) | 0.0109 (5) | 0.0052 (5) | 0.0001 (5) |
| N2 | 0.0305 (6) | 0.0324 (6) | 0.0323 (6) | 0.0086 (5) | 0.0027 (5) | 0.0000 (5) |
| N3 | 0.0371 (7) | 0.0375 (7) | 0.0381 (7) | 0.0170 (6) | 0.0061 (5) | 0.0035 (5) |
| N4 | 0.0322 (6) | 0.0307 (6) | 0.0333 (6) | 0.0102 (5) | 0.0046 (5) | 0.0017 (5) |
| O1 | 0.0473 (6) | 0.0551 (7) | 0.0382 (6) | 0.0289 (6) | 0.0098 (5) | 0.0055 (5) |
| O2 | 0.0419 (6) | 0.0452 (6) | 0.0348 (5) | 0.0147 (5) | 0.0070 (4) | 0.0054 (5) |
| O3 | 0.0441 (6) | 0.0426 (6) | 0.0314 (5) | 0.0128 (5) | 0.0050 (4) | 0.0057 (5) |
| O4 | 0.0419 (6) | 0.0392 (6) | 0.0381 (6) | 0.0197 (5) | 0.0084 (4) | 0.0045 (5) |
| O5 | 0.0467 (6) | 0.0393 (6) | 0.0350 (5) | 0.0148 (5) | 0.0056 (5) | 0.0025 (5) |
| O6 | 0.0523 (7) | 0.0422 (6) | 0.0298 (5) | 0.0042 (5) | 0.0061 (5) | 0.0037 (5) |
| O1W | 0.0556 (7) | 0.0471 (7) | 0.0506 (7) | 0.0176 (6) | 0.0152 (6) | 0.0011 (6) |
| C1—N1 | 1.3606 (18) | C15—C16 | 1.4399 (19) |
| C1—C2 | 1.3744 (19) | C15—C22 | 1.4579 (19) |
| C1—H1 | 0.9500 | C16—C17 | 1.403 (2) |
| C2—C3 | 1.4421 (19) | C16—C21 | 1.4114 (19) |
| C2—C9 | 1.4706 (19) | C17—C18 | 1.384 (2) |
| C3—C4 | 1.404 (2) | C17—H17 | 0.9500 |
| C3—C8 | 1.4083 (19) | C18—C19 | 1.395 (2) |
| C4—C5 | 1.379 (2) | C18—H18 | 0.9500 |
| C4—H4 | 0.9500 | C19—C20 | 1.373 (2) |
| C5—C6 | 1.395 (2) | C19—H19 | 0.9500 |
| C5—H5 | 0.9500 | C20—C21 | 1.395 (2) |
| C6—C7 | 1.376 (2) | C20—H20 | 0.9500 |
| C6—H6 | 0.9500 | C21—N3 | 1.3743 (19) |
| C7—C8 | 1.399 (2) | C22—O4 | 1.2485 (17) |
| C7—H7 | 0.9500 | C22—N4 | 1.3467 (18) |
| C8—N1 | 1.3779 (19) | C23—N4 | 1.4543 (17) |
| C9—O1 | 1.2470 (17) | C23—C24 | 1.511 (2) |
| C9—N2 | 1.3348 (18) | C23—H23A | 0.9900 |
| C10—N2 | 1.4630 (17) | C23—H23B | 0.9900 |
| C10—C11 | 1.512 (2) | C24—C25 | 1.506 (2) |
| C10—H10A | 0.9900 | C24—H24A | 0.9900 |
| C10—H10B | 0.9900 | C24—H24B | 0.9900 |
| C11—C12 | 1.507 (2) | C25—O5 | 1.2062 (18) |
| C11—H11A | 0.9900 | C25—O6 | 1.3212 (17) |
| C11—H11B | 0.9900 | C26—O6 | 1.451 (2) |
| C12—O2 | 1.2095 (17) | C26—H26A | 0.9800 |
| C12—O3 | 1.3285 (17) | C26—H26B | 0.9800 |
| C13—O3 | 1.4470 (19) | C26—H26C | 0.9800 |
| C13—H13A | 0.9800 | N1—H1A | 0.8800 |
| C13—H13B | 0.9800 | N2—H2 | 0.8800 |
| C13—H13C | 0.9800 | N3—H3 | 0.8800 |
| C14—N3 | 1.3548 (19) | N4—H4A | 0.8800 |
| C14—C15 | 1.377 (2) | O1W—H1B | 0.8533 |
| C14—H14 | 0.9500 | O1W—H1C | 0.8497 |
| N1—C1—C2 | 109.39 (12) | C21—C16—C15 | 105.98 (12) |
| N1—C1—H1 | 125.3 | C18—C17—C16 | 118.89 (14) |
| C2—C1—H1 | 125.3 | C18—C17—H17 | 120.6 |
| C1—C2—C3 | 107.05 (12) | C16—C17—H17 | 120.6 |
| C1—C2—C9 | 129.92 (13) | C17—C18—C19 | 121.33 (15) |
| C3—C2—C9 | 122.99 (12) | C17—C18—H18 | 119.3 |
| C4—C3—C8 | 118.49 (13) | C19—C18—H18 | 119.3 |
| C4—C3—C2 | 135.33 (13) | C20—C19—C18 | 121.28 (15) |
| C8—C3—C2 | 106.17 (12) | C20—C19—H19 | 119.4 |
| C5—C4—C3 | 118.86 (14) | C18—C19—H19 | 119.4 |
| C5—C4—H4 | 120.6 | C19—C20—C21 | 117.64 (14) |
| C3—C4—H4 | 120.6 | C19—C20—H20 | 121.2 |
| C4—C5—C6 | 121.47 (15) | C21—C20—H20 | 121.2 |
| C4—C5—H5 | 119.3 | N3—C21—C20 | 129.50 (13) |
| C6—C5—H5 | 119.3 | N3—C21—C16 | 108.12 (12) |
| C7—C6—C5 | 121.46 (15) | C20—C21—C16 | 122.37 (14) |
| C7—C6—H6 | 119.3 | O4—C22—N4 | 119.79 (12) |
| C5—C6—H6 | 119.3 | O4—C22—C15 | 121.47 (13) |
| C6—C7—C8 | 117.08 (14) | N4—C22—C15 | 118.73 (12) |
| C6—C7—H7 | 121.5 | N4—C23—C24 | 111.22 (11) |
| C8—C7—H7 | 121.5 | N4—C23—H23A | 109.4 |
| N1—C8—C7 | 129.56 (13) | C24—C23—H23A | 109.4 |
| N1—C8—C3 | 107.79 (12) | N4—C23—H23B | 109.4 |
| C7—C8—C3 | 122.63 (14) | C24—C23—H23B | 109.4 |
| O1—C9—N2 | 120.34 (13) | H23A—C23—H23B | 108.0 |
| O1—C9—C2 | 118.97 (13) | C25—C24—C23 | 110.56 (11) |
| N2—C9—C2 | 120.68 (12) | C25—C24—H24A | 109.5 |
| N2—C10—C11 | 112.37 (11) | C23—C24—H24A | 109.5 |
| N2—C10—H10A | 109.1 | C25—C24—H24B | 109.5 |
| C11—C10—H10A | 109.1 | C23—C24—H24B | 109.5 |
| N2—C10—H10B | 109.1 | H24A—C24—H24B | 108.1 |
| C11—C10—H10B | 109.1 | O5—C25—O6 | 124.53 (13) |
| H10A—C10—H10B | 107.9 | O5—C25—C24 | 123.92 (13) |
| C12—C11—C10 | 110.78 (12) | O6—C25—C24 | 111.54 (12) |
| C12—C11—H11A | 109.5 | O6—C26—H26A | 109.5 |
| C10—C11—H11A | 109.5 | O6—C26—H26B | 109.5 |
| C12—C11—H11B | 109.5 | H26A—C26—H26B | 109.5 |
| C10—C11—H11B | 109.5 | O6—C26—H26C | 109.5 |
| H11A—C11—H11B | 108.1 | H26A—C26—H26C | 109.5 |
| O2—C12—O3 | 123.10 (13) | H26B—C26—H26C | 109.5 |
| O2—C12—C11 | 125.54 (13) | C1—N1—C8 | 109.60 (11) |
| O3—C12—C11 | 111.36 (12) | C1—N1—H1A | 125.2 |
| O3—C13—H13A | 109.5 | C8—N1—H1A | 125.2 |
| O3—C13—H13B | 109.5 | C9—N2—C10 | 118.86 (11) |
| H13A—C13—H13B | 109.5 | C9—N2—H2 | 120.6 |
| O3—C13—H13C | 109.5 | C10—N2—H2 | 120.6 |
| H13A—C13—H13C | 109.5 | C14—N3—C21 | 109.23 (12) |
| H13B—C13—H13C | 109.5 | C14—N3—H3 | 125.4 |
| N3—C14—C15 | 109.93 (13) | C21—N3—H3 | 125.4 |
| N3—C14—H14 | 125.0 | C22—N4—C23 | 120.49 (11) |
| C15—C14—H14 | 125.0 | C22—N4—H4A | 119.8 |
| C14—C15—C16 | 106.73 (12) | C23—N4—H4A | 119.8 |
| C14—C15—C22 | 125.74 (13) | C12—O3—C13 | 115.49 (12) |
| C16—C15—C22 | 127.45 (12) | C25—O6—C26 | 116.00 (12) |
| C17—C16—C21 | 118.46 (13) | H1B—O1W—H1C | 107.6 |
| C17—C16—C15 | 135.56 (13) | ||
| N1—C1—C2—C3 | 0.15 (16) | C16—C17—C18—C19 | 0.8 (3) |
| N1—C1—C2—C9 | −177.67 (14) | C17—C18—C19—C20 | −1.5 (3) |
| C1—C2—C3—C4 | −179.04 (15) | C18—C19—C20—C21 | 0.5 (3) |
| C9—C2—C3—C4 | −1.0 (2) | C19—C20—C21—N3 | 179.75 (16) |
| C1—C2—C3—C8 | −0.29 (15) | C19—C20—C21—C16 | 1.1 (2) |
| C9—C2—C3—C8 | 177.72 (12) | C17—C16—C21—N3 | 179.37 (13) |
| C8—C3—C4—C5 | −1.3 (2) | C15—C16—C21—N3 | −1.26 (16) |
| C2—C3—C4—C5 | 177.35 (15) | C17—C16—C21—C20 | −1.7 (2) |
| C3—C4—C5—C6 | 0.8 (2) | C15—C16—C21—C20 | 177.67 (14) |
| C4—C5—C6—C7 | 0.2 (2) | C14—C15—C22—O4 | −179.26 (14) |
| C5—C6—C7—C8 | −0.6 (2) | C16—C15—C22—O4 | −3.1 (2) |
| C6—C7—C8—N1 | −177.99 (14) | C14—C15—C22—N4 | −0.2 (2) |
| C6—C7—C8—C3 | 0.1 (2) | C16—C15—C22—N4 | 175.97 (13) |
| C4—C3—C8—N1 | 179.32 (12) | N4—C23—C24—C25 | 179.09 (12) |
| C2—C3—C8—N1 | 0.31 (15) | C23—C24—C25—O5 | −2.6 (2) |
| C4—C3—C8—C7 | 0.9 (2) | C23—C24—C25—O6 | 177.96 (12) |
| C2—C3—C8—C7 | −178.12 (13) | C2—C1—N1—C8 | 0.05 (16) |
| C1—C2—C9—O1 | 179.73 (15) | C7—C8—N1—C1 | 178.05 (15) |
| C3—C2—C9—O1 | 2.2 (2) | C3—C8—N1—C1 | −0.23 (16) |
| C1—C2—C9—N2 | −1.0 (2) | O1—C9—N2—C10 | −0.2 (2) |
| C3—C2—C9—N2 | −178.56 (12) | C2—C9—N2—C10 | −179.46 (12) |
| N2—C10—C11—C12 | −178.09 (12) | C11—C10—N2—C9 | −177.74 (12) |
| C10—C11—C12—O2 | −8.0 (2) | C15—C14—N3—C21 | −0.72 (18) |
| C10—C11—C12—O3 | 171.58 (12) | C20—C21—N3—C14 | −177.58 (16) |
| N3—C14—C15—C16 | −0.08 (17) | C16—C21—N3—C14 | 1.25 (17) |
| N3—C14—C15—C22 | 176.72 (13) | O4—C22—N4—C23 | −0.5 (2) |
| C14—C15—C16—C17 | −179.97 (16) | C15—C22—N4—C23 | −179.56 (13) |
| C22—C15—C16—C17 | 3.3 (3) | C24—C23—N4—C22 | −177.04 (12) |
| C14—C15—C16—C21 | 0.82 (16) | O2—C12—O3—C13 | −0.2 (2) |
| C22—C15—C16—C21 | −175.91 (14) | C11—C12—O3—C13 | −179.74 (13) |
| C21—C16—C17—C18 | 0.7 (2) | O5—C25—O6—C26 | −1.2 (2) |
| C15—C16—C17—C18 | −178.40 (16) | C24—C25—O6—C26 | 178.26 (13) |
| D—H···A | D—H | H···A | D···A | D—H···A |
| N1—H1A···O4i | 0.88 | 2.04 | 2.8219 (15) | 148 |
| N2—H2···O1Wii | 0.88 | 2.09 | 2.9348 (17) | 161 |
| N3—H3···O1 | 0.88 | 1.88 | 2.7404 (16) | 164 |
| N4—H4A···O2 | 0.88 | 2.43 | 3.2952 (15) | 167 |
| O1W—H1B···O4 | 0.85 | 2.17 | 2.9890 (18) | 161 |
| O1W—H1C···O5iii | 0.85 | 1.98 | 2.7970 (16) | 160 |
| Symmetry codes: (i) x+1, y−1, z; (ii) −x+1, −y+1, −z; (iii) −x, −y+2, −z. |
| D—H···A | D—H | H···A | D···A | D—H···A |
| N1—H1A···O4i | 0.88 | 2.04 | 2.8219 (15) | 148 |
| N2—H2···O1Wii | 0.88 | 2.09 | 2.9348 (17) | 161 |
| N3—H3···O1 | 0.88 | 1.88 | 2.7404 (16) | 164 |
| N4—H4A···O2 | 0.88 | 2.43 | 3.2952 (15) | 167 |
| O1W—H1B···O4 | 0.85 | 2.17 | 2.9890 (18) | 161 |
| O1W—H1C···O5iii | 0.85 | 1.98 | 2.7970 (16) | 160 |
| Symmetry codes: (i) x+1, y−1, z; (ii) −x+1, −y+1, −z; (iii) −x, −y+2, −z. |
We thank the Natural Science Foundation of Guangdong Province, China (No. 06300581) for generously supporting this study.
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Many indole derivatives show important bioactivity, acting as metabotropic receptor antagonists (Fabio et al., 2007) and showing protein kinase inhibiting activity (Sharma et al., 2004). This is the reason they have attracted our interest and the title compound is related to our previous structural investigations of methyl 3-(1-Butyl-1H-indole-3-carbonyl)aminopropionate (Huang et al., 2009).
The asymmetric unit of the title compound comprises two substituted indole molecules, A & B and a solvent water molecule, Fig. 1. The organic molecules are each reasonably planar with rms deviations from the best fit plane through all of the non hydrogen atoms of 0.004 (2) Å for A and -0.006 (1) Å for B. Also the five and six-membered rings of the indole systems are inclined at 1.67 (8) ° and 1.50 (8) ° in A and B respectively. Bond lengths in both molecules are unexceptional (Allen et al., 1987) and are comparable to those found in similar structures (Huang et al., 2009; Siddiquee et al., 2009).
In the crystal structure, molecules of the organic compound are linked through N—H···O H-bonds to form dimers that are connected by another N—H···O H-bonds to generate chains, and the O—H(W)···O and N—H···O(W) H-bond interactions link these chains to form double-chains extending to the a axis (Table 1, Fig. 2).