

Supporting information
![]() | Crystallographic Information File (CIF) https://doi.org/10.1107/S0108270101016304/ln1121sup1.cif |
![]() | Structure factor file (CIF format) https://doi.org/10.1107/S0108270101016304/ln1121Isup2.hkl |
CCDC reference: 179277
The title compound, (I), was prepared by a photoinduced reaction of 1-acetylisatin with 1-methoxyphenyl-2-phenylacetylene (Zhang et al., 2000). The primary product in the photoreaction is supposed to be a spiroxetene which rearranges under reaction conditions to the Z and E isomers of 3-[benzoyl(4-methoxyphenyl)methylene]-2,3-dihydro-1H-indol-2-one. Single crystals suitable for X-ray diffraction were obtained by slow evaporation of a petroleum ether–ethyl acetate solution.
After checking their presence in a difference Fourier synthesis, the positions of all H atoms were geometrically idealized and allowed to ride on their parent C atoms, with C—H distances of 0.93 and 0.96 Å for aromatic and methyl H atoms, respectively, and fixed displacement parameters defined by Uiso(H) = 1.2Ueq(Caromatic) or 1.5Ueq(Cmethyl).
Data collection: SMART (Siemens, 1996); cell refinement: SAINT (Siemens, 1996); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 1997); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL, PARST (Nardelli, 1995) and PLATON (Spek, 1990).
![]() | Fig. 1. The structure of title compound showing 50% probability displacement ellipsoids and the atom-numbering scheme. |
![]() | Fig. 2. Packing of the title compound viewed down the a axis. |
C25H19NO4 | Dx = 1.327 Mg m−3 |
Mr = 397.41 | Melting point: 453K K |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
a = 8.0395 (3) Å | Cell parameters from 5444 reflections |
b = 16.7881 (5) Å | θ = 1.8–28.4° |
c = 14.8438 (5) Å | µ = 0.09 mm−1 |
β = 96.954 (1)° | T = 293 K |
V = 1988.7 (1) Å3 | Block, yellow |
Z = 4 | 0.34 × 0.26 × 0.22 mm |
F(000) = 832 |
Siemens SMART CCD area-detector diffractometer | 4857 independent reflections |
Radiation source: fine-focus sealed tube | 2603 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.069 |
Detector resolution: 8.33 pixels mm-1 | θmax = 28.3°, θmin = 1.8° |
ω scans | h = −9→10 |
Absorption correction: empirical (using intensity measurements) (SADABS; Sheldrick, 1996) | k = −19→22 |
Tmin = 0.970, Tmax = 0.980 | l = −19→19 |
13734 measured reflections |
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)] = 0.052 | H-atom parameters constrained |
wR(F2) = 0.135 | w = 1/[σ2(Fo2) + (0.058P)2] where P = (Fo2 + 2Fc2)/3 |
S = 0.91 | (Δ/σ)max < 0.001 |
4857 reflections | Δρmax = 0.18 e Å−3 |
274 parameters | Δρmin = −0.20 e Å−3 |
0 restraints | Extinction correction: SHELXL97, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0066 (12) |
C25H19NO4 | V = 1988.7 (1) Å3 |
Mr = 397.41 | Z = 4 |
Monoclinic, P21/c | Mo Kα radiation |
a = 8.0395 (3) Å | µ = 0.09 mm−1 |
b = 16.7881 (5) Å | T = 293 K |
c = 14.8438 (5) Å | 0.34 × 0.26 × 0.22 mm |
β = 96.954 (1)° |
Siemens SMART CCD area-detector diffractometer | 4857 independent reflections |
Absorption correction: empirical (using intensity measurements) (SADABS; Sheldrick, 1996) | 2603 reflections with I > 2σ(I) |
Tmin = 0.970, Tmax = 0.980 | Rint = 0.069 |
13734 measured reflections |
R[F2 > 2σ(F2)] = 0.052 | 0 restraints |
wR(F2) = 0.135 | H-atom parameters constrained |
S = 0.91 | Δρmax = 0.18 e Å−3 |
4857 reflections | Δρmin = −0.20 e Å−3 |
274 parameters |
Experimental. The data collection covered over a hemisphere of reciprocal space by a combination of three sets of exposures; each set had a different ϕ angle (0, 88 and 180°) for the crystal and each exposure of 10 s covered 0.3° in ω. The crystal-to-detector distance was 4 cm and the detector swing angle was -35°. Crystal decay was monitored by repeating fifty initial frames at the end of data collection and analysing the intensity of duplicate reflections, and was found to be negligible. |
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 | 0.8466 (2) | −0.11836 (9) | 0.51135 (11) | 0.0818 (5) | |
O2 | 0.92050 (19) | 0.05665 (8) | 0.70865 (9) | 0.0587 (4) | |
O3 | 0.85943 (16) | 0.22279 (7) | 0.78816 (8) | 0.0464 (3) | |
O4 | 0.7318 (2) | 0.52297 (8) | 0.48966 (11) | 0.0748 (5) | |
N1 | 0.82185 (19) | 0.00548 (8) | 0.56590 (10) | 0.0417 (4) | |
C1 | 0.7254 (2) | 0.03884 (10) | 0.48790 (11) | 0.0397 (4) | |
C2 | 0.6493 (3) | −0.00042 (12) | 0.41222 (13) | 0.0538 (6) | |
H2A | 0.6624 | −0.0550 | 0.4047 | 0.065* | |
C3 | 0.5527 (3) | 0.04500 (13) | 0.34811 (14) | 0.0598 (6) | |
H3A | 0.5001 | 0.0201 | 0.2964 | 0.072* | |
C4 | 0.5313 (3) | 0.12558 (13) | 0.35797 (13) | 0.0568 (6) | |
H4A | 0.4639 | 0.1540 | 0.3138 | 0.068* | |
C5 | 0.6105 (3) | 0.16458 (12) | 0.43394 (13) | 0.0494 (5) | |
H5A | 0.5971 | 0.2192 | 0.4408 | 0.059* | |
C6 | 0.7095 (2) | 0.12134 (10) | 0.49923 (11) | 0.0390 (4) | |
C7 | 0.8035 (2) | 0.14297 (10) | 0.58651 (11) | 0.0353 (4) | |
C8 | 0.8573 (2) | 0.06629 (10) | 0.63084 (12) | 0.0388 (4) | |
C9 | 0.8729 (3) | −0.07465 (11) | 0.57524 (14) | 0.0488 (5) | |
C10 | 0.9613 (3) | −0.10116 (13) | 0.66339 (15) | 0.0694 (7) | |
H10A | 1.0541 | −0.0663 | 0.6812 | 0.104* | |
H10B | 1.0017 | −0.1545 | 0.6576 | 0.104* | |
H10C | 0.8854 | −0.0999 | 0.7086 | 0.104* | |
C11 | 0.8464 (2) | 0.21246 (9) | 0.62867 (11) | 0.0340 (4) | |
C12 | 0.8138 (2) | 0.29326 (10) | 0.58980 (11) | 0.0351 (4) | |
C13 | 0.8507 (2) | 0.31184 (11) | 0.50349 (12) | 0.0414 (4) | |
H13A | 0.8939 | 0.2724 | 0.4689 | 0.050* | |
C14 | 0.8252 (2) | 0.38720 (11) | 0.46736 (12) | 0.0451 (5) | |
H14A | 0.8504 | 0.3981 | 0.4091 | 0.054* | |
C15 | 0.7623 (3) | 0.44627 (11) | 0.51813 (13) | 0.0483 (5) | |
C16 | 0.7274 (3) | 0.42918 (11) | 0.60552 (13) | 0.0557 (6) | |
H16A | 0.6858 | 0.4689 | 0.6403 | 0.067* | |
C17 | 0.7538 (3) | 0.35421 (11) | 0.64088 (12) | 0.0461 (5) | |
H17A | 0.7314 | 0.3439 | 0.6998 | 0.055* | |
C18 | 0.7631 (4) | 0.54352 (14) | 0.40031 (16) | 0.0808 (8) | |
H18A | 0.7332 | 0.5982 | 0.3885 | 0.121* | |
H18B | 0.6973 | 0.5100 | 0.3573 | 0.121* | |
H18C | 0.8799 | 0.5362 | 0.3948 | 0.121* | |
C19 | 0.9387 (2) | 0.21135 (9) | 0.72443 (11) | 0.0351 (4) | |
C20 | 1.1223 (2) | 0.20053 (10) | 0.73653 (12) | 0.0388 (4) | |
C21 | 1.2186 (2) | 0.21474 (11) | 0.66717 (14) | 0.0475 (5) | |
H21A | 1.1681 | 0.2323 | 0.6110 | 0.057* | |
C22 | 1.3900 (3) | 0.20283 (13) | 0.68117 (17) | 0.0633 (6) | |
H22A | 1.4549 | 0.2139 | 0.6349 | 0.076* | |
C23 | 1.4647 (3) | 0.17483 (14) | 0.76303 (19) | 0.0711 (7) | |
H23A | 1.5797 | 0.1659 | 0.7717 | 0.085* | |
C24 | 1.3702 (3) | 0.15992 (13) | 0.83217 (18) | 0.0661 (6) | |
H24A | 1.4211 | 0.1405 | 0.8874 | 0.079* | |
C25 | 1.2004 (3) | 0.17361 (12) | 0.81995 (14) | 0.0546 (5) | |
H25A | 1.1373 | 0.1649 | 0.8676 | 0.066* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.1294 (16) | 0.0465 (9) | 0.0646 (10) | 0.0160 (9) | −0.0084 (10) | −0.0150 (8) |
O2 | 0.0831 (11) | 0.0451 (8) | 0.0415 (8) | −0.0040 (7) | −0.0183 (8) | 0.0058 (6) |
O3 | 0.0464 (8) | 0.0599 (9) | 0.0335 (7) | −0.0034 (6) | 0.0076 (6) | −0.0019 (6) |
O4 | 0.1147 (15) | 0.0429 (9) | 0.0668 (11) | 0.0140 (8) | 0.0110 (10) | 0.0128 (7) |
N1 | 0.0528 (10) | 0.0335 (8) | 0.0375 (9) | −0.0029 (7) | −0.0001 (8) | −0.0007 (6) |
C1 | 0.0455 (11) | 0.0409 (10) | 0.0319 (10) | −0.0061 (8) | 0.0015 (8) | −0.0010 (8) |
C2 | 0.0723 (15) | 0.0441 (12) | 0.0428 (12) | −0.0113 (10) | −0.0018 (11) | −0.0067 (9) |
C3 | 0.0727 (15) | 0.0648 (15) | 0.0374 (11) | −0.0152 (11) | −0.0110 (11) | −0.0036 (10) |
C4 | 0.0637 (14) | 0.0602 (14) | 0.0417 (12) | −0.0078 (11) | −0.0134 (10) | 0.0075 (10) |
C5 | 0.0549 (13) | 0.0481 (12) | 0.0425 (11) | −0.0022 (9) | −0.0045 (10) | 0.0049 (9) |
C6 | 0.0420 (11) | 0.0412 (10) | 0.0332 (10) | −0.0038 (8) | 0.0020 (8) | 0.0017 (8) |
C7 | 0.0376 (10) | 0.0364 (10) | 0.0312 (9) | −0.0014 (7) | 0.0013 (8) | 0.0013 (7) |
C8 | 0.0411 (11) | 0.0371 (10) | 0.0368 (11) | −0.0052 (8) | −0.0013 (9) | −0.0003 (8) |
C9 | 0.0620 (13) | 0.0348 (11) | 0.0496 (12) | 0.0009 (9) | 0.0068 (10) | −0.0012 (9) |
C10 | 0.101 (2) | 0.0443 (12) | 0.0600 (14) | 0.0147 (12) | −0.0009 (14) | 0.0095 (10) |
C11 | 0.0361 (10) | 0.0368 (10) | 0.0290 (9) | −0.0005 (7) | 0.0041 (8) | −0.0008 (7) |
C12 | 0.0378 (10) | 0.0351 (10) | 0.0319 (10) | −0.0011 (7) | 0.0017 (8) | −0.0025 (7) |
C13 | 0.0511 (11) | 0.0387 (10) | 0.0353 (10) | −0.0011 (8) | 0.0083 (9) | −0.0047 (8) |
C14 | 0.0583 (13) | 0.0421 (11) | 0.0350 (10) | −0.0044 (9) | 0.0063 (9) | 0.0028 (8) |
C15 | 0.0589 (13) | 0.0369 (11) | 0.0476 (12) | 0.0018 (9) | 0.0003 (10) | 0.0056 (9) |
C16 | 0.0770 (15) | 0.0425 (12) | 0.0496 (12) | 0.0117 (10) | 0.0152 (11) | −0.0046 (10) |
C17 | 0.0590 (13) | 0.0444 (11) | 0.0362 (11) | 0.0046 (9) | 0.0110 (10) | −0.0019 (8) |
C18 | 0.109 (2) | 0.0626 (15) | 0.0672 (16) | 0.0021 (14) | −0.0034 (15) | 0.0279 (12) |
C19 | 0.0419 (10) | 0.0315 (9) | 0.0319 (10) | −0.0050 (7) | 0.0038 (8) | −0.0012 (7) |
C20 | 0.0404 (11) | 0.0351 (10) | 0.0400 (11) | −0.0057 (8) | 0.0018 (9) | −0.0082 (8) |
C21 | 0.0482 (12) | 0.0463 (11) | 0.0486 (12) | −0.0083 (9) | 0.0087 (10) | −0.0120 (9) |
C22 | 0.0483 (13) | 0.0671 (15) | 0.0773 (17) | −0.0131 (11) | 0.0191 (13) | −0.0192 (12) |
C23 | 0.0407 (13) | 0.0686 (16) | 0.101 (2) | −0.0051 (11) | −0.0032 (15) | −0.0198 (14) |
C24 | 0.0490 (14) | 0.0661 (15) | 0.0767 (16) | −0.0054 (11) | −0.0184 (13) | −0.0014 (12) |
C25 | 0.0493 (13) | 0.0609 (13) | 0.0511 (13) | −0.0074 (10) | −0.0043 (10) | 0.0040 (10) |
O1—C9 | 1.198 (2) | C11—C19 | 1.522 (2) |
O2—C8 | 1.215 (2) | C12—C13 | 1.385 (2) |
O3—C19 | 1.2184 (19) | C12—C17 | 1.394 (2) |
O4—C15 | 1.368 (2) | C13—C14 | 1.380 (2) |
O4—C18 | 1.422 (3) | C13—H13A | 0.9300 |
N1—C9 | 1.409 (2) | C14—C15 | 1.378 (3) |
N1—C8 | 1.409 (2) | C14—H14A | 0.9300 |
N1—C1 | 1.427 (2) | C15—C16 | 1.390 (3) |
C1—C2 | 1.380 (3) | C16—C17 | 1.370 (3) |
C1—C6 | 1.403 (2) | C16—H16A | 0.9300 |
C2—C3 | 1.383 (3) | C17—H17A | 0.9300 |
C2—H2A | 0.9300 | C18—H18A | 0.9600 |
C3—C4 | 1.374 (3) | C18—H18B | 0.9600 |
C3—H3A | 0.9300 | C18—H18C | 0.9600 |
C4—C5 | 1.390 (3) | C19—C20 | 1.476 (3) |
C4—H4A | 0.9300 | C20—C21 | 1.382 (2) |
C5—C6 | 1.383 (3) | C20—C25 | 1.394 (3) |
C5—H5A | 0.9300 | C21—C22 | 1.383 (3) |
C6—C7 | 1.464 (2) | C21—H21A | 0.9300 |
C7—C11 | 1.349 (2) | C22—C23 | 1.372 (3) |
C7—C8 | 1.486 (2) | C22—H22A | 0.9300 |
C9—C10 | 1.480 (3) | C23—C24 | 1.372 (3) |
C10—H10A | 0.9600 | C23—H23A | 0.9300 |
C10—H10B | 0.9600 | C24—C25 | 1.375 (3) |
C10—H10C | 0.9600 | C24—H24A | 0.9300 |
C11—C12 | 1.485 (2) | C25—H25A | 0.9300 |
C15—O4—C18 | 118.11 (17) | C14—C13—C12 | 121.85 (16) |
C9—N1—C8 | 126.30 (16) | C14—C13—H13A | 119.1 |
C9—N1—C1 | 125.30 (15) | C12—C13—H13A | 119.1 |
C8—N1—C1 | 108.40 (14) | C15—C14—C13 | 119.62 (17) |
C2—C1—C6 | 122.09 (17) | C15—C14—H14A | 120.2 |
C2—C1—N1 | 128.07 (17) | C13—C14—H14A | 120.2 |
C6—C1—N1 | 109.78 (15) | O4—C15—C14 | 124.90 (17) |
C1—C2—C3 | 116.98 (19) | O4—C15—C16 | 115.70 (17) |
C1—C2—H2A | 121.5 | C14—C15—C16 | 119.39 (17) |
C3—C2—H2A | 121.5 | C17—C16—C15 | 120.50 (18) |
C4—C3—C2 | 122.46 (19) | C17—C16—H16A | 119.7 |
C4—C3—H3A | 118.8 | C15—C16—H16A | 119.7 |
C2—C3—H3A | 118.8 | C16—C17—C12 | 120.91 (17) |
C3—C4—C5 | 119.97 (19) | C16—C17—H17A | 119.5 |
C3—C4—H4A | 120.0 | C12—C17—H17A | 119.5 |
C5—C4—H4A | 120.0 | O4—C18—H18A | 109.5 |
C6—C5—C4 | 119.31 (19) | O4—C18—H18B | 109.5 |
C6—C5—H5A | 120.3 | H18A—C18—H18B | 109.5 |
C4—C5—H5A | 120.3 | O4—C18—H18C | 109.5 |
C5—C6—C1 | 119.16 (17) | H18A—C18—H18C | 109.5 |
C5—C6—C7 | 132.95 (17) | H18B—C18—H18C | 109.5 |
C1—C6—C7 | 107.83 (15) | O3—C19—C20 | 122.30 (16) |
C11—C7—C6 | 134.47 (16) | O3—C19—C11 | 118.77 (15) |
C11—C7—C8 | 119.96 (16) | C20—C19—C11 | 118.86 (14) |
C6—C7—C8 | 105.57 (14) | C21—C20—C25 | 119.01 (18) |
O2—C8—N1 | 125.48 (16) | C21—C20—C19 | 122.02 (17) |
O2—C8—C7 | 127.03 (16) | C25—C20—C19 | 118.95 (16) |
N1—C8—C7 | 107.50 (15) | C20—C21—C22 | 120.1 (2) |
O1—C9—N1 | 119.06 (18) | C20—C21—H21A | 120.0 |
O1—C9—C10 | 122.41 (19) | C22—C21—H21A | 120.0 |
N1—C9—C10 | 118.51 (17) | C23—C22—C21 | 120.3 (2) |
C9—C10—H10A | 109.5 | C23—C22—H22A | 119.9 |
C9—C10—H10B | 109.5 | C21—C22—H22A | 119.9 |
H10A—C10—H10B | 109.5 | C22—C23—C24 | 120.2 (2) |
C9—C10—H10C | 109.5 | C22—C23—H23A | 119.9 |
H10A—C10—H10C | 109.5 | C24—C23—H23A | 119.9 |
H10B—C10—H10C | 109.5 | C23—C24—C25 | 120.1 (2) |
C7—C11—C12 | 125.92 (16) | C23—C24—H24A | 119.9 |
C7—C11—C19 | 119.41 (15) | C25—C24—H24A | 119.9 |
C12—C11—C19 | 114.66 (13) | C24—C25—C20 | 120.3 (2) |
C13—C12—C17 | 117.69 (16) | C24—C25—H25A | 119.8 |
C13—C12—C11 | 121.17 (15) | C20—C25—H25A | 119.8 |
C17—C12—C11 | 121.04 (15) | ||
C9—N1—C1—C2 | 7.5 (3) | C8—C7—C11—C19 | −4.5 (2) |
C8—N1—C1—C2 | −172.86 (19) | C7—C11—C12—C13 | −47.7 (3) |
C9—N1—C1—C6 | −175.17 (17) | C19—C11—C12—C13 | 131.52 (18) |
C8—N1—C1—C6 | 4.5 (2) | C7—C11—C12—C17 | 135.99 (19) |
C6—C1—C2—C3 | −1.4 (3) | C19—C11—C12—C17 | −44.8 (2) |
N1—C1—C2—C3 | 175.67 (19) | C17—C12—C13—C14 | −1.8 (3) |
C1—C2—C3—C4 | −0.1 (3) | C11—C12—C13—C14 | −178.27 (17) |
C2—C3—C4—C5 | 1.0 (3) | C12—C13—C14—C15 | 0.4 (3) |
C3—C4—C5—C6 | −0.4 (3) | C18—O4—C15—C14 | 1.6 (3) |
C4—C5—C6—C1 | −1.0 (3) | C18—O4—C15—C16 | −179.1 (2) |
C4—C5—C6—C7 | −177.65 (19) | C13—C14—C15—O4 | 180.0 (2) |
C2—C1—C6—C5 | 2.0 (3) | C13—C14—C15—C16 | 0.8 (3) |
N1—C1—C6—C5 | −175.57 (16) | O4—C15—C16—C17 | −179.8 (2) |
C2—C1—C6—C7 | 179.37 (17) | C14—C15—C16—C17 | −0.5 (3) |
N1—C1—C6—C7 | 1.8 (2) | C15—C16—C17—C12 | −0.9 (3) |
C5—C6—C7—C11 | −10.8 (4) | C13—C12—C17—C16 | 2.1 (3) |
C1—C6—C7—C11 | 172.27 (19) | C11—C12—C17—C16 | 178.53 (19) |
C5—C6—C7—C8 | 169.9 (2) | C7—C11—C19—O3 | −99.9 (2) |
C1—C6—C7—C8 | −7.05 (19) | C12—C11—C19—O3 | 80.78 (19) |
C9—N1—C8—O2 | −9.2 (3) | C7—C11—C19—C20 | 83.1 (2) |
C1—N1—C8—O2 | 171.19 (18) | C12—C11—C19—C20 | −96.15 (18) |
C9—N1—C8—C7 | 170.81 (16) | O3—C19—C20—C21 | −157.28 (17) |
C1—N1—C8—C7 | −8.83 (19) | C11—C19—C20—C21 | 19.5 (2) |
C11—C7—C8—O2 | 10.3 (3) | O3—C19—C20—C25 | 24.0 (2) |
C6—C7—C8—O2 | −170.26 (18) | C11—C19—C20—C25 | −159.15 (16) |
C11—C7—C8—N1 | −169.68 (15) | C25—C20—C21—C22 | −0.5 (3) |
C6—C7—C8—N1 | 9.76 (19) | C19—C20—C21—C22 | −179.16 (17) |
C8—N1—C9—O1 | −173.37 (19) | C20—C21—C22—C23 | 1.8 (3) |
C1—N1—C9—O1 | 6.2 (3) | C21—C22—C23—C24 | −1.3 (3) |
C8—N1—C9—C10 | 5.1 (3) | C22—C23—C24—C25 | −0.5 (3) |
C1—N1—C9—C10 | −175.28 (18) | C23—C24—C25—C20 | 1.8 (3) |
C6—C7—C11—C12 | −4.5 (3) | C21—C20—C25—C24 | −1.3 (3) |
C8—C7—C11—C12 | 174.70 (16) | C19—C20—C25—C24 | 177.41 (18) |
C6—C7—C11—C19 | 176.28 (18) |
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2A···O1 | 0.93 | 2.29 | 2.835 (3) | 117 |
C10—H10A···O2 | 0.96 | 2.39 | 2.762 (3) | 103 |
C10—H10B···O3i | 0.96 | 2.43 | 3.328 (3) | 155 |
C17—H17A···O3 | 0.93 | 2.57 | 3.149 (2) | 121 |
C23—H23A···O3ii | 0.93 | 2.43 | 3.251 (3) | 148 |
Symmetry codes: (i) −x+2, y−1/2, −z+3/2; (ii) x+1, y, z. |
Experimental details
Crystal data | |
Chemical formula | C25H19NO4 |
Mr | 397.41 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 293 |
a, b, c (Å) | 8.0395 (3), 16.7881 (5), 14.8438 (5) |
β (°) | 96.954 (1) |
V (Å3) | 1988.7 (1) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.34 × 0.26 × 0.22 |
Data collection | |
Diffractometer | Siemens SMART CCD area-detector diffractometer |
Absorption correction | Empirical (using intensity measurements) (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.970, 0.980 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 13734, 4857, 2603 |
Rint | 0.069 |
(sin θ/λ)max (Å−1) | 0.668 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.052, 0.135, 0.91 |
No. of reflections | 4857 |
No. of parameters | 274 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.18, −0.20 |
Computer programs: SMART (Siemens, 1996), SAINT (Siemens, 1996), SAINT, SHELXTL (Sheldrick, 1997), SHELXTL, PARST (Nardelli, 1995) and PLATON (Spek, 1990).
N1—C8 | 1.409 (2) | C7—C8 | 1.486 (2) |
N1—C1 | 1.427 (2) | C11—C12 | 1.485 (2) |
C1—C6 | 1.403 (2) | C11—C19 | 1.522 (2) |
C6—C7 | 1.464 (2) | C19—C20 | 1.476 (3) |
C7—C11 | 1.349 (2) | ||
C7—C11—C12 | 125.92 (16) | O3—C19—C20 | 122.30 (16) |
C7—C11—C19 | 119.41 (15) | O3—C19—C11 | 118.77 (15) |
C12—C11—C19 | 114.66 (13) | ||
C8—N1—C9—O1 | −173.37 (19) | C18—O4—C15—C16 | −179.1 (2) |
C1—N1—C9—O1 | 6.2 (3) | O3—C19—C20—C21 | −157.28 (17) |
C18—O4—C15—C14 | 1.6 (3) | O3—C19—C20—C25 | 24.0 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2A···O1 | 0.93 | 2.2941 | 2.835 (3) | 117 |
C10—H10A···O2 | 0.96 | 2.3846 | 2.762 (3) | 103 |
C10—H10B···O3i | 0.96 | 2.4333 | 3.328 (3) | 155 |
C17—H17A···O3 | 0.93 | 2.5665 | 3.149 (2) | 121 |
C23—H23A···O3ii | 0.93 | 2.4282 | 3.251 (3) | 148 |
Symmetry codes: (i) −x+2, y−1/2, −z+3/2; (ii) x+1, y, z. |
1,3-Dihydro-3-methylene-2H-indol-2-one derivatives are synthetic precursors for biologically active spirocyclohexenindoles and certain alkaloids (Beccali et al., 1999). The stereochemistry, including the configuration and conformation, and their correlations with other spectroscopic properties are also of current research interest (Coda et al., 1984). The photoreaction of 1-acetylisatin with 1,2-phenylacetylenes is one of the synthetic routes for obtaining such derivatives (Zhang et al., 2000). In order to investigate the effect of the attached substituents of 1,2-diphenylacetylene on the regioselectivity of the photoreaction and the stereochemical properties of the product, we have synthesized the title compound, 1-acetyl-3-[benzoyl(4-methoxyphenyl)methylene]-2,3-dihydro-1H-indol-2-one, (I), which is the product of the photoreaction of 1-acetylisatin with 1-(4-methoxyphenyl)-2-phenylacetylene. As part of this research interest, we determined the X-ray crystal structure of (I) in order to confirm its conformation and stereochemistry.
The bond lengths and angles in the title compound (Table 1) have normal values (Allen et al., 1987), except for the bond lengths around C11, due to the steric effects of the bulky substituents. The bond lengths and angles within the indole moiety agree with those of a related structure (Usman et al., 2001).
In the title structure (Fig. 1), the indole moiety is not completely planar, with the heterocyclic ring being distorted very slightly towards a half-chair conformation. This conformation is confirmed by its puckering parameters [Q2 = 0.090 (2) Å and ϕ2 = 133 (1)°; Cremer & Pople, 1975] and the deviations of C7 and C8 from the N1/C1/C6/C7/C8 mean plane are -0.052 (2) and 0.056 (2) Å, respectively. The dihedral angle between the mean planes of the heterocyclic and benzene rings in the indole moiety is 5.5 (1)°.
The benzoyl and 4-methoxyphenyl substituents attached at C11 are almost planar, although the carbonyl group of the benzoyl moiety is twisted slightly out of the plane of the benzene ring, so that O3 deviates by 0.390 (1) Å from this plane. The O3/C11/C19/C20 plane is twisted by 22.1 (1)° from that of the benzene ring. The maximum deviation from the plane of the 4-methoxyphenyl substituent is 0.022 (2) Å at C12. The angle between the mean planes of these two substituents is 63.6 (1)°.
Although the mean plane of the 4-methoxyphenyl group is in a bisecting configuration with respect to that of the indole moiety, the benzoyl ring lies nearly perpendicular to the plane of the indole ring system. The corresponding dihedral angles are 48.1 (1) and 85.0 (1)°, respectively. The ketone O2 atom deviates by 0.324 (1) Å from the mean plane of the indole moiety, while the acetyl group attached at N1 is twisted by 10.3 (1)° from the indole-ring plane.
In the title compound, three intramolecular C—H···O interactions form closed rings, viz. O2/C8/N1/C9/C10/H10A, O1/C9/N1/C1/C2/H2A and O3/C19/C11/C12/C17/H17A. The molecules are linked by an intermolecular C23—H23A···O3 interaction into columns along the x axis, and another intermolecular C10—H10B···O3 interaction interconnects the columns into a three-dimensional framework. These interactions, as well as van der Waals interactions, stabilize the molecular and the packing structure in the crystal.