Supporting information
Crystallographic Information File (CIF) https://doi.org/10.1107/S0108270101017164/sk1509sup1.cif | |
Structure factor file (CIF format) https://doi.org/10.1107/S0108270101017164/sk1509Isup2.hkl |
CCDC reference: 182009
The title compound, (I), was prepared by photolysis of 3-ethoxycarbonylcoumarin (50 mmol) in benzene solution with an excess amount of 1,1-diphenylethylene using light of wavelength longer than 300 nm. Single crystals suitable for X-ray diffraction analysis were recrystallized by slow evaporation from a petroleum ether–ethyl acetate solution.
After checking their presence in the difference map, all H atoms were fixed geometrically and allowed to ride on the parent C atoms (C—H = 0.93–0.98 Å).
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 (I) showing 50% probability displacement ellipsoids and the atom-numbering scheme. | |
Fig. 2. Packing diagram of the structure (I) viewed down the a axis. |
C26H22O4 | Z = 2 |
Mr = 398.44 | F(000) = 420 |
Triclinic, P1 | Dx = 1.282 Mg m−3 |
Hall symbol: -P 1 | Melting point: 435K K |
a = 10.5692 (2) Å | Mo Kα radiation, λ = 0.71073 Å |
b = 10.6982 (2) Å | Cell parameters from 4216 reflections |
c = 10.7687 (1) Å | θ = 2.0–28.3° |
α = 94.848 (1)° | µ = 0.09 mm−1 |
β = 99.091 (1)° | T = 293 K |
γ = 119.064 (1)° | Slab, colourless |
V = 1032.43 (3) Å3 | 0.36 × 0.30 × 0.14 mm |
Siemens SMART CCD area-detector diffractometer | 4425 independent reflections |
Radiation source: fine-focus sealed tube | 2402 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.084 |
Detector resolution: 8.33 pixels mm-1 | θmax = 27.0°, θmin = 2.0° |
ω scans | h = −12→13 |
Absorption correction: empirical (using intensity measurements) (SADABS; Sheldrick, 1996) | k = −12→13 |
Tmin = 0.970, Tmax = 0.988 | l = −13→10 |
6894 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)] = 0.075 | H-atom parameters constrained |
wR(F2) = 0.209 | w = 1/[σ2(Fo2) + (0.0916P)2] where P = (Fo2 + 2Fc2)/3 |
S = 0.87 | (Δ/σ)max < 0.001 |
4425 reflections | Δρmax = 0.57 e Å−3 |
272 parameters | Δρmin = −0.59 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: 0.226 (15) |
C26H22O4 | γ = 119.064 (1)° |
Mr = 398.44 | V = 1032.43 (3) Å3 |
Triclinic, P1 | Z = 2 |
a = 10.5692 (2) Å | Mo Kα radiation |
b = 10.6982 (2) Å | µ = 0.09 mm−1 |
c = 10.7687 (1) Å | T = 293 K |
α = 94.848 (1)° | 0.36 × 0.30 × 0.14 mm |
β = 99.091 (1)° |
Siemens SMART CCD area-detector diffractometer | 4425 independent reflections |
Absorption correction: empirical (using intensity measurements) (SADABS; Sheldrick, 1996) | 2402 reflections with I > 2σ(I) |
Tmin = 0.970, Tmax = 0.988 | Rint = 0.084 |
6894 measured reflections |
R[F2 > 2σ(F2)] = 0.075 | 0 restraints |
wR(F2) = 0.209 | H-atom parameters constrained |
S = 0.87 | Δρmax = 0.57 e Å−3 |
4425 reflections | Δρmin = −0.59 e Å−3 |
272 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 | 0.2491 (2) | 0.5661 (2) | 0.35589 (19) | 0.0495 (6) | |
O2 | 0.2382 (2) | 0.4991 (2) | 0.1549 (2) | 0.0564 (6) | |
O3 | 0.1815 (2) | 0.7109 (2) | −0.02682 (18) | 0.0513 (6) | |
O4 | 0.40941 (19) | 0.8018 (2) | 0.09736 (17) | 0.0441 (5) | |
C1 | 0.2103 (3) | 0.7073 (3) | 0.2001 (2) | 0.0302 (6) | |
C2 | 0.2992 (3) | 0.8420 (3) | 0.3095 (2) | 0.0318 (6) | |
H2A | 0.4055 | 0.8795 | 0.3159 | 0.038* | |
C3 | 0.2661 (3) | 0.9592 (3) | 0.2788 (2) | 0.0345 (6) | |
C4 | 0.3750 (3) | 1.1048 (3) | 0.3189 (3) | 0.0462 (7) | |
H4A | 0.4693 | 1.1284 | 0.3626 | 0.055* | |
C5 | 0.3482 (4) | 1.2150 (3) | 0.2964 (3) | 0.0600 (9) | |
H5A | 0.4233 | 1.3117 | 0.3244 | 0.072* | |
C6 | 0.2092 (4) | 1.1812 (4) | 0.2320 (3) | 0.0637 (10) | |
H6A | 0.1893 | 1.2552 | 0.2179 | 0.076* | |
C7 | 0.0986 (4) | 1.0369 (3) | 0.1880 (3) | 0.0501 (8) | |
H7A | 0.0059 | 1.0150 | 0.1420 | 0.060* | |
C8 | 0.1243 (3) | 0.9240 (3) | 0.2116 (2) | 0.0341 (6) | |
C9 | −0.0002 (3) | 0.7678 (3) | 0.1611 (2) | 0.0328 (6) | |
H9A | −0.0318 | 0.7578 | 0.0685 | 0.039* | |
C10 | 0.0433 (3) | 0.6524 (3) | 0.1824 (2) | 0.0330 (6) | |
H10A | −0.0106 | 0.5725 | 0.1097 | 0.040* | |
H10B | 0.0120 | 0.6142 | 0.2576 | 0.040* | |
C11 | 0.2344 (3) | 0.5839 (3) | 0.2323 (3) | 0.0381 (6) | |
C12 | 0.2392 (3) | 0.6569 (3) | 0.4504 (3) | 0.0431 (7) | |
C13 | 0.2054 (4) | 0.6027 (4) | 0.5602 (3) | 0.0589 (9) | |
H13A | 0.1911 | 0.5112 | 0.5689 | 0.071* | |
C14 | 0.1935 (4) | 0.6867 (4) | 0.6560 (3) | 0.0697 (11) | |
H14A | 0.1711 | 0.6520 | 0.7307 | 0.084* | |
C15 | 0.2144 (4) | 0.8210 (4) | 0.6426 (3) | 0.0692 (10) | |
H15A | 0.2044 | 0.8763 | 0.7076 | 0.083* | |
C16 | 0.2504 (3) | 0.8754 (4) | 0.5323 (3) | 0.0516 (8) | |
H16A | 0.2665 | 0.9677 | 0.5249 | 0.062* | |
C17 | 0.2626 (3) | 0.7929 (3) | 0.4334 (2) | 0.0363 (6) | |
C18 | −0.1358 (3) | 0.7301 (3) | 0.2171 (3) | 0.0370 (6) | |
C19 | −0.1227 (3) | 0.7930 (3) | 0.3398 (3) | 0.0512 (8) | |
H19A | −0.0302 | 0.8654 | 0.3886 | 0.061* | |
C20 | −0.2497 (4) | 0.7470 (4) | 0.3900 (4) | 0.0663 (10) | |
H20A | −0.2408 | 0.7896 | 0.4723 | 0.080* | |
C21 | −0.3848 (4) | 0.6414 (4) | 0.3204 (4) | 0.0657 (10) | |
H21A | −0.4682 | 0.6114 | 0.3548 | 0.079* | |
C22 | −0.3981 (3) | 0.5793 (4) | 0.1997 (4) | 0.0625 (9) | |
H22A | −0.4913 | 0.5070 | 0.1520 | 0.075* | |
C23 | −0.2773 (3) | 0.6213 (3) | 0.1479 (3) | 0.0496 (8) | |
H23A | −0.2890 | 0.5771 | 0.0654 | 0.060* | |
C24 | 0.2626 (3) | 0.7401 (3) | 0.0760 (2) | 0.0336 (6) | |
C25 | 0.4751 (3) | 0.8142 (3) | −0.0124 (3) | 0.0483 (7) | |
H25A | 0.4454 | 0.8654 | −0.0695 | 0.058* | |
H25C | 0.4429 | 0.7183 | −0.0592 | 0.058* | |
C26 | 0.6405 (3) | 0.8970 (4) | 0.0371 (3) | 0.0556 (8) | |
H26D | 0.6879 | 0.9073 | −0.0334 | 0.083* | |
H26A | 0.6685 | 0.8452 | 0.0933 | 0.083* | |
H26B | 0.6710 | 0.9916 | 0.0831 | 0.083* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0673 (14) | 0.0514 (13) | 0.0489 (12) | 0.0381 (11) | 0.0267 (10) | 0.0254 (9) |
O2 | 0.0760 (15) | 0.0453 (13) | 0.0673 (14) | 0.0396 (11) | 0.0343 (12) | 0.0144 (10) |
O3 | 0.0493 (12) | 0.0657 (14) | 0.0307 (11) | 0.0221 (10) | 0.0130 (9) | 0.0081 (9) |
O4 | 0.0377 (10) | 0.0609 (13) | 0.0366 (10) | 0.0221 (9) | 0.0235 (8) | 0.0147 (8) |
C1 | 0.0323 (12) | 0.0304 (13) | 0.0304 (13) | 0.0148 (10) | 0.0159 (10) | 0.0093 (9) |
C2 | 0.0296 (12) | 0.0340 (14) | 0.0288 (13) | 0.0118 (10) | 0.0128 (10) | 0.0081 (10) |
C3 | 0.0420 (14) | 0.0295 (13) | 0.0296 (13) | 0.0130 (11) | 0.0186 (11) | 0.0081 (9) |
C4 | 0.0511 (17) | 0.0319 (15) | 0.0438 (16) | 0.0091 (12) | 0.0211 (13) | 0.0078 (11) |
C5 | 0.078 (2) | 0.0288 (16) | 0.062 (2) | 0.0135 (15) | 0.0351 (19) | 0.0095 (13) |
C6 | 0.102 (3) | 0.0413 (19) | 0.073 (2) | 0.0434 (19) | 0.052 (2) | 0.0292 (16) |
C7 | 0.0619 (19) | 0.0505 (19) | 0.0586 (19) | 0.0360 (16) | 0.0328 (16) | 0.0282 (14) |
C8 | 0.0414 (14) | 0.0339 (14) | 0.0343 (14) | 0.0191 (11) | 0.0241 (11) | 0.0140 (10) |
C9 | 0.0335 (13) | 0.0363 (14) | 0.0298 (13) | 0.0163 (11) | 0.0136 (10) | 0.0101 (10) |
C10 | 0.0309 (12) | 0.0289 (13) | 0.0362 (14) | 0.0110 (10) | 0.0146 (11) | 0.0057 (10) |
C11 | 0.0378 (14) | 0.0362 (15) | 0.0456 (16) | 0.0183 (11) | 0.0208 (12) | 0.0151 (11) |
C12 | 0.0437 (16) | 0.0504 (17) | 0.0363 (15) | 0.0211 (13) | 0.0158 (12) | 0.0182 (12) |
C13 | 0.065 (2) | 0.061 (2) | 0.0427 (18) | 0.0216 (16) | 0.0154 (16) | 0.0280 (15) |
C14 | 0.077 (2) | 0.079 (3) | 0.0317 (17) | 0.0193 (19) | 0.0206 (16) | 0.0229 (16) |
C15 | 0.081 (2) | 0.082 (3) | 0.0310 (17) | 0.030 (2) | 0.0232 (17) | 0.0048 (15) |
C16 | 0.0597 (19) | 0.0542 (19) | 0.0311 (15) | 0.0208 (14) | 0.0147 (13) | 0.0050 (12) |
C17 | 0.0336 (13) | 0.0416 (15) | 0.0283 (13) | 0.0133 (11) | 0.0108 (11) | 0.0102 (10) |
C18 | 0.0370 (14) | 0.0416 (15) | 0.0426 (15) | 0.0238 (12) | 0.0175 (12) | 0.0171 (11) |
C19 | 0.0479 (17) | 0.060 (2) | 0.0484 (17) | 0.0257 (15) | 0.0242 (14) | 0.0100 (14) |
C20 | 0.075 (2) | 0.080 (3) | 0.068 (2) | 0.047 (2) | 0.044 (2) | 0.0241 (18) |
C21 | 0.0479 (19) | 0.071 (2) | 0.102 (3) | 0.0360 (18) | 0.048 (2) | 0.040 (2) |
C22 | 0.0365 (16) | 0.065 (2) | 0.087 (3) | 0.0231 (15) | 0.0232 (17) | 0.0210 (18) |
C23 | 0.0370 (15) | 0.0479 (18) | 0.0607 (19) | 0.0180 (13) | 0.0147 (14) | 0.0108 (14) |
C24 | 0.0368 (13) | 0.0314 (13) | 0.0347 (14) | 0.0158 (11) | 0.0178 (12) | 0.0080 (10) |
C25 | 0.0563 (18) | 0.0527 (18) | 0.0443 (16) | 0.0263 (14) | 0.0348 (14) | 0.0150 (12) |
C26 | 0.0479 (17) | 0.069 (2) | 0.062 (2) | 0.0303 (16) | 0.0357 (16) | 0.0250 (16) |
O1—C11 | 1.356 (3) | C10—H10B | 0.9700 |
O1—C12 | 1.399 (3) | C12—C13 | 1.382 (4) |
O2—C11 | 1.199 (3) | C12—C17 | 1.387 (4) |
O3—C24 | 1.200 (3) | C13—C14 | 1.372 (5) |
O4—C24 | 1.328 (3) | C13—H13A | 0.9300 |
O4—C25 | 1.447 (3) | C14—C15 | 1.368 (5) |
C1—C11 | 1.518 (4) | C14—H14A | 0.9300 |
C1—C24 | 1.530 (3) | C15—C16 | 1.393 (4) |
C1—C10 | 1.537 (3) | C15—H15A | 0.9300 |
C1—C2 | 1.548 (3) | C16—C17 | 1.387 (4) |
C2—C3 | 1.504 (4) | C16—H16A | 0.9300 |
C2—C17 | 1.513 (3) | C18—C19 | 1.385 (4) |
C2—H2A | 0.9800 | C18—C23 | 1.399 (4) |
C3—C4 | 1.388 (4) | C19—C20 | 1.403 (4) |
C3—C8 | 1.404 (4) | C19—H19A | 0.9300 |
C4—C5 | 1.372 (4) | C20—C21 | 1.352 (5) |
C4—H4A | 0.9300 | C20—H20A | 0.9300 |
C5—C6 | 1.375 (5) | C21—C22 | 1.363 (5) |
C5—H5A | 0.9300 | C21—H21A | 0.9300 |
C6—C7 | 1.386 (5) | C22—C23 | 1.362 (4) |
C6—H6A | 0.9300 | C22—H22A | 0.9300 |
C7—C8 | 1.396 (4) | C23—H23A | 0.9300 |
C7—H7A | 0.9300 | C25—C26 | 1.498 (4) |
C8—C9 | 1.518 (3) | C25—H25A | 0.9700 |
C9—C18 | 1.527 (3) | C25—H25C | 0.9700 |
C9—C10 | 1.535 (3) | C26—H26D | 0.9600 |
C9—H9A | 0.9800 | C26—H26A | 0.9600 |
C10—H10A | 0.9700 | C26—H26B | 0.9600 |
C11—O1—C12 | 120.9 (2) | C17—C12—O1 | 121.3 (2) |
C24—O4—C25 | 117.9 (2) | C14—C13—C12 | 118.6 (3) |
C11—C1—C24 | 105.24 (18) | C14—C13—H13A | 120.7 |
C11—C1—C10 | 107.43 (19) | C12—C13—H13A | 120.7 |
C24—C1—C10 | 112.1 (2) | C15—C14—C13 | 120.5 (3) |
C11—C1—C2 | 111.0 (2) | C15—C14—H14A | 119.7 |
C24—C1—C2 | 111.6 (2) | C13—C14—H14A | 119.7 |
C10—C1—C2 | 109.34 (19) | C14—C15—C16 | 120.4 (3) |
C3—C2—C17 | 113.8 (2) | C14—C15—H15A | 119.8 |
C3—C2—C1 | 109.9 (2) | C16—C15—H15A | 119.8 |
C17—C2—C1 | 108.0 (2) | C17—C16—C15 | 120.5 (3) |
C3—C2—H2A | 108.3 | C17—C16—H16A | 119.8 |
C17—C2—H2A | 108.3 | C15—C16—H16A | 119.8 |
C1—C2—H2A | 108.3 | C12—C17—C16 | 117.2 (2) |
C4—C3—C8 | 118.8 (3) | C12—C17—C2 | 118.6 (2) |
C4—C3—C2 | 120.2 (2) | C16—C17—C2 | 124.2 (3) |
C8—C3—C2 | 121.0 (2) | C19—C18—C23 | 118.0 (2) |
C5—C4—C3 | 122.1 (3) | C19—C18—C9 | 121.9 (2) |
C5—C4—H4A | 118.9 | C23—C18—C9 | 120.0 (2) |
C3—C4—H4A | 118.9 | C18—C19—C20 | 119.6 (3) |
C4—C5—C6 | 119.4 (3) | C18—C19—H19A | 120.2 |
C4—C5—H5A | 120.3 | C20—C19—H19A | 120.2 |
C6—C5—H5A | 120.3 | C21—C20—C19 | 120.9 (3) |
C5—C6—C7 | 120.0 (3) | C21—C20—H20A | 119.6 |
C5—C6—H6A | 120.0 | C19—C20—H20A | 119.6 |
C7—C6—H6A | 120.0 | C20—C21—C22 | 119.7 (3) |
C6—C7—C8 | 121.0 (3) | C20—C21—H21A | 120.2 |
C6—C7—H7A | 119.5 | C22—C21—H21A | 120.2 |
C8—C7—H7A | 119.5 | C23—C22—C21 | 121.1 (3) |
C7—C8—C3 | 118.6 (2) | C23—C22—H22A | 119.5 |
C7—C8—C9 | 119.0 (2) | C21—C22—H22A | 119.5 |
C3—C8—C9 | 122.3 (2) | C22—C23—C18 | 120.8 (3) |
C8—C9—C18 | 112.33 (19) | C22—C23—H23A | 119.6 |
C8—C9—C10 | 114.9 (2) | C18—C23—H23A | 119.6 |
C18—C9—C10 | 107.8 (2) | O3—C24—O4 | 124.8 (2) |
C8—C9—H9A | 107.2 | O3—C24—C1 | 124.5 (2) |
C18—C9—H9A | 107.2 | O4—C24—C1 | 110.6 (2) |
C10—C9—H9A | 107.2 | O4—C25—C26 | 107.2 (2) |
C9—C10—C1 | 114.8 (2) | O4—C25—H25A | 110.3 |
C9—C10—H10A | 108.6 | C26—C25—H25A | 110.3 |
C1—C10—H10A | 108.6 | O4—C25—H25C | 110.3 |
C9—C10—H10B | 108.6 | C26—C25—H25C | 110.3 |
C1—C10—H10B | 108.6 | H25A—C25—H25C | 108.5 |
H10A—C10—H10B | 107.6 | C25—C26—H26D | 109.5 |
O2—C11—O1 | 117.8 (3) | C25—C26—H26A | 109.5 |
O2—C11—C1 | 124.2 (2) | H26D—C26—H26A | 109.5 |
O1—C11—C1 | 118.1 (2) | C25—C26—H26B | 109.5 |
C13—C12—C17 | 122.8 (3) | H26D—C26—H26B | 109.5 |
C13—C12—O1 | 115.9 (3) | H26A—C26—H26B | 109.5 |
C11—C1—C2—C3 | −176.57 (18) | C11—O1—C12—C13 | 158.9 (3) |
C24—C1—C2—C3 | 66.4 (3) | C11—O1—C12—C17 | −21.2 (4) |
C10—C1—C2—C3 | −58.2 (3) | C17—C12—C13—C14 | 0.4 (5) |
C11—C1—C2—C17 | −51.9 (3) | O1—C12—C13—C14 | −179.7 (3) |
C24—C1—C2—C17 | −168.91 (19) | C12—C13—C14—C15 | 0.2 (5) |
C10—C1—C2—C17 | 66.5 (3) | C13—C14—C15—C16 | −1.1 (5) |
C17—C2—C3—C4 | 91.6 (3) | C14—C15—C16—C17 | 1.4 (5) |
C1—C2—C3—C4 | −147.1 (2) | C13—C12—C17—C16 | −0.1 (4) |
C17—C2—C3—C8 | −87.1 (3) | O1—C12—C17—C16 | −180.0 (2) |
C1—C2—C3—C8 | 34.2 (3) | C13—C12—C17—C2 | 179.9 (3) |
C8—C3—C4—C5 | 0.8 (4) | O1—C12—C17—C2 | 0.0 (4) |
C2—C3—C4—C5 | −178.0 (3) | C15—C16—C17—C12 | −0.8 (4) |
C3—C4—C5—C6 | 0.0 (4) | C15—C16—C17—C2 | 179.2 (3) |
C4—C5—C6—C7 | −1.4 (5) | C3—C2—C17—C12 | 158.1 (2) |
C5—C6—C7—C8 | 2.1 (4) | C1—C2—C17—C12 | 35.9 (3) |
C6—C7—C8—C3 | −1.4 (4) | C3—C2—C17—C16 | −21.8 (3) |
C6—C7—C8—C9 | −179.9 (2) | C1—C2—C17—C16 | −144.1 (3) |
C4—C3—C8—C7 | −0.1 (3) | C8—C9—C18—C19 | −32.0 (4) |
C2—C3—C8—C7 | 178.7 (2) | C10—C9—C18—C19 | 95.5 (3) |
C4—C3—C8—C9 | 178.4 (2) | C8—C9—C18—C23 | 153.0 (3) |
C2—C3—C8—C9 | −2.9 (3) | C10—C9—C18—C23 | −79.5 (3) |
C7—C8—C9—C18 | −61.3 (3) | C23—C18—C19—C20 | −0.3 (5) |
C3—C8—C9—C18 | 120.3 (2) | C9—C18—C19—C20 | −175.4 (3) |
C7—C8—C9—C10 | 175.1 (2) | C18—C19—C20—C21 | 0.3 (5) |
C3—C8—C9—C10 | −3.4 (3) | C19—C20—C21—C22 | −0.3 (6) |
C8—C9—C10—C1 | −23.2 (3) | C20—C21—C22—C23 | 0.2 (5) |
C18—C9—C10—C1 | −149.2 (2) | C21—C22—C23—C18 | −0.3 (5) |
C11—C1—C10—C9 | 174.71 (19) | C19—C18—C23—C22 | 0.3 (4) |
C24—C1—C10—C9 | −70.1 (3) | C9—C18—C23—C22 | 175.5 (3) |
C2—C1—C10—C9 | 54.2 (3) | C25—O4—C24—O3 | −10.3 (4) |
C12—O1—C11—O2 | −177.2 (2) | C25—O4—C24—C1 | 168.1 (2) |
C12—O1—C11—C1 | 1.3 (4) | C11—C1—C24—O3 | 108.2 (3) |
C24—C1—C11—O2 | −24.8 (3) | C10—C1—C24—O3 | −8.3 (3) |
C10—C1—C11—O2 | 94.8 (3) | C2—C1—C24—O3 | −131.4 (3) |
C2—C1—C11—O2 | −145.7 (3) | C11—C1—C24—O4 | −70.2 (2) |
C24—C1—C11—O1 | 156.8 (2) | C10—C1—C24—O4 | 173.3 (2) |
C10—C1—C11—O1 | −83.6 (3) | C2—C1—C24—O4 | 50.2 (3) |
C2—C1—C11—O1 | 35.9 (3) | C24—O4—C25—C26 | 175.7 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2A···O4 | 0.98 | 2.44 | 2.815 (3) | 102 |
C6—H6A···O2i | 0.93 | 2.58 | 3.449 (4) | 156 |
Symmetry code: (i) x, y+1, z. |
Experimental details
Crystal data | |
Chemical formula | C26H22O4 |
Mr | 398.44 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 293 |
a, b, c (Å) | 10.5692 (2), 10.6982 (2), 10.7687 (1) |
α, β, γ (°) | 94.848 (1), 99.091 (1), 119.064 (1) |
V (Å3) | 1032.43 (3) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.36 × 0.30 × 0.14 |
Data collection | |
Diffractometer | Siemens SMART CCD area-detector diffractometer |
Absorption correction | Empirical (using intensity measurements) (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.970, 0.988 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 6894, 4425, 2402 |
Rint | 0.084 |
(sin θ/λ)max (Å−1) | 0.639 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.075, 0.209, 0.87 |
No. of reflections | 4425 |
No. of parameters | 272 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.57, −0.59 |
Computer programs: SMART (Siemens, 1996), SAINT (Siemens, 1996), SAINT, SHELXTL (Sheldrick, 1997), SHELXTL, PARST (Nardelli, 1995) and PLATON (Spek, 1990).
O1—C11 | 1.356 (3) | C2—C17 | 1.513 (3) |
O1—C12 | 1.399 (3) | C3—C8 | 1.404 (4) |
C1—C11 | 1.518 (4) | C8—C9 | 1.518 (3) |
C1—C10 | 1.537 (3) | C9—C18 | 1.527 (3) |
C1—C2 | 1.548 (3) | C9—C10 | 1.535 (3) |
C2—C3 | 1.504 (4) | ||
C11—C1—C24 | 105.24 (18) | C3—C2—C17 | 113.8 (2) |
C11—C1—C10 | 107.43 (19) | C8—C9—C18 | 112.33 (19) |
C24—C1—C10 | 112.1 (2) | C8—C9—C10 | 114.9 (2) |
D—H···A | D—H | H···A | D···A | D—H···A |
C2—H2A···O4 | 0.98 | 2.4423 | 2.815 (3) | 102 |
C6—H6A···O2i | 0.93 | 2.5760 | 3.449 (4) | 156 |
Symmetry code: (i) x, y+1, z. |
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The photoinduced reactions of coumarin derivatives have been widely investigated (Lewis & Barancyk, 1989). However, the photoinduced reactions of coumarins with phenylethenes have not been much investigated. In order to extend the scope of photoinduced reactions of coumarin derivatives, we have conducted the photoinduced reaction of 3-ethoxycarbonylcoumarin with 1,1-diphenylethene. It is unexpectedly found that the coumarin ring was annulated in this reaction to give the title compound, (I). An X-ray crystal structure analysis of (I) was undertaken to confirm its novel four-ring structure. The crystal structure is a racemate.
In the title structure (Fig. 1), the pyranone ring adopts a twisted boat conformation, with atoms C1 and C2 deviating by ±0.300 (3) Å and puckering parameters (Cremer & Pople, 1975) Q2 = 0.445 (3) Å, Q3 = 0.192 (3) Å, QT = 0.484 (3) Å, θ = 66.7 (4)° and ϕ2 = 151.0 (4)°. The cyclohexane ring is close to an envelope conformation, with atom C1 deviating by -0.358 (2) Å and puckering parameters Q2 = 0.413 (3) Å, Q3 = -0.290 (3) Å, QT = 0.505 (3) Å, θ = 125.1 (3)° and ϕ2 = 170.2 (4)°. The dihedral angle between the mean planes through the pyranone and cyclohexane rings is 69.7 (2)°, while these two rings make dihedral angles of 15.9 (2) and 10.2 (1)° with the benzene rings in the coumarin and naphthalene moieties, respectively. The coumarin and naphthalene moieties make a dihedral angle of 78.8 (1)° with one another, corresponding to a synclinical configuration.
The bond lengths and angles within (I) are normal (Allen et al., 1987). Except for the C3—C8 and C12—C17 bonds, all the C—C bond distances in the pyranone and cyclohexane rings are typical Csp3—Csp3 single-bond values. The average C—C bond distances within the benzene and phenyl rings are 1.377 (4), 1.381 (4) and 1.387 (4) Å.
The phenyl-ring substituent attached to the cyclohexane ring moiety at C9 is twisted by 68.1 (2)° with respect to the mean plane of the cyclohexane ring, corresponding to an equatorial position with respect to the cyclohexane ring. The ketone O2 atom deviates by 0.286 (2) Å from the cyclohexane ring. The ethoxycarbonyl group is nearly planar, with atom O3 deviating by 0.261 (2) Å. This plane makes a dihedral angle of 85.4 (3)° to the cyclohexane ring.
In the title structure, an intramolecular C—H···O interaction forms an O4—C24—C1—C2—H2A closed ring. The molecules are stacked into columns nearly along the c axis. One weak intermolecular C—H···O interaction (symmetry code: x, y + 1, z) was also observed which interconnects the molecules into infinite molecular sheets along the b axis. These interactions, as well as van der Waals interactions, stabilize the molecular and packing structure in the crystal.