organic compounds
4-(Octyloxy)phenyl 2-oxo-2H-chromene-3-carboxylate
aDepartment of Physics, Yuvaraja's College (Constituent College), University of Mysore, Mysore 570 005, Karnataka, India, bDepartment of Studies and Research in Chemistry, Tumkur University, Tumkur 572 103, Karnataka, India, and cRaman Research Institute, C. V. Raman Avenue, Sadashivanagar, Bangalore 560 080, Karnataka, India
*Correspondence e-mail: devarajegowda@yahoo.com
In the title compound, C24H26O5, the 2H-chromene ring system is essentially planar, with a maximum deviation of 0.029 (2) Å from the best-fit mean plane incorporating both rings. The dihedral angle between the 2H-chromene ring system and the benzene ring is 21.00 (1)°. In the crystal, pairs of C—H⋯O hydrogen bonds generate an R22(8) ring pattern. These contacts are bolstered by weaker bifurcated C—H⋯O hydrogen bonds.
Related literature
For general background to coumarin derivatives and their biological and technological applications, see: Georgieva et al. (2004); Creaven et al. (2005); Morita et al. (2005); Tian et al. (2003); Iliopoulos et al. (2010); Hejchman et al. (2011). For hydrogen-bond motifs, see: Bernstein et al. (1995).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2001); cell SAINT (Bruker, 2001); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 2012); software used to prepare material for publication: SHELXL97.
Supporting information
10.1107/S1600536813000214/sj5291sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813000214/sj5291Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813000214/sj5291Isup3.cml
A mixture of 2-oxo-2H-chromene-3-carboxylic acid (19 mg,1 mmol), 4-(octyloxy)phenol (22.2 mg,1 mmol), N,N -dicyclohexylcarbodiimide (23 mg,1.2 mmol) and a catalytic quantity of N,N-dimethylaminopyrimidine was stirred in 5 ml of dry dichloromethane for 24 h at room temperature. The residue obtained on removal of solvent was chromatographed on silica gel and eluted with chloroform. Removal of solvent from the
afforded a colorless solid, which was re-crystallized from absolute ethanol to obtain needle like crystals of the title compound for X-ray diffraction analysis.All H atoms were positioned geometrically, with C—H = 0.93 Å for aromatic H, C—H = 0.97 Å for methylene H and C—H = 0.96 Å for methyl H, and refined using a riding model with Uiso(H) = 1.5Ueq(C) for methyl H and Uiso(H) = 1.2Ueq(C) for all other H.
Data collection: SMART (Bruker, 2001); cell
SAINT (Bruker, 2001); data reduction: SAINT (Bruker, 2001); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 2012); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).C24H26O5 | F(000) = 840 |
Mr = 394.45 | Dx = 1.255 Mg m−3 |
Monoclinic, P21/n | Melting point: 580 K |
Hall symbol: -P 2yn | Mo Kα radiation, λ = 0.71073 Å |
a = 14.464 (3) Å | Cell parameters from 3615 reflections |
b = 6.7548 (15) Å | θ = 3.2–25.0° |
c = 21.381 (5) Å | µ = 0.09 mm−1 |
β = 91.663 (8)° | T = 293 K |
V = 2088.0 (8) Å3 | Needles, colourless |
Z = 4 | 0.29 × 0.25 × 0.21 mm |
Bruker SMART CCD area-detector diffractometer | 3615 independent reflections |
Radiation source: fine-focus sealed tube | 1926 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.084 |
ω and ϕ scans | θmax = 25.0°, θmin = 3.2° |
Absorption correction: multi-scan (SADABS; Sheldrick, 2007) | h = −17→16 |
Tmin = 0.975, Tmax = 0.982 | k = −8→5 |
22609 measured reflections | l = −25→25 |
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)] = 0.058 | H-atom parameters constrained |
wR(F2) = 0.146 | w = 1/[σ2(Fo2) + (0.077P)2] where P = (Fo2 + 2Fc2)/3 |
S = 0.94 | (Δ/σ)max < 0.001 |
3615 reflections | Δρmax = 0.18 e Å−3 |
264 parameters | Δρmin = −0.14 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: 0.0019 (7) |
C24H26O5 | V = 2088.0 (8) Å3 |
Mr = 394.45 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 14.464 (3) Å | µ = 0.09 mm−1 |
b = 6.7548 (15) Å | T = 293 K |
c = 21.381 (5) Å | 0.29 × 0.25 × 0.21 mm |
β = 91.663 (8)° |
Bruker SMART CCD area-detector diffractometer | 3615 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2007) | 1926 reflections with I > 2σ(I) |
Tmin = 0.975, Tmax = 0.982 | Rint = 0.084 |
22609 measured reflections |
R[F2 > 2σ(F2)] = 0.058 | 0 restraints |
wR(F2) = 0.146 | H-atom parameters constrained |
S = 0.94 | Δρmax = 0.18 e Å−3 |
3615 reflections | Δρmin = −0.14 e Å−3 |
264 parameters |
Geometry. All s.u.'s (except the s.u. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell s.u.'s are taken into account individually in the estimation of s.u.'s in distances, angles and torsion angles; correlations between s.u.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell s.u.'s is used for estimating s.u.'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 > 2σ(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 | 0.11082 (14) | 0.0294 (3) | −0.01675 (8) | 0.0705 (6) | |
O2 | 0.11756 (15) | −0.1104 (3) | 0.07552 (9) | 0.0826 (7) | |
O3 | 0.06844 (14) | 0.1538 (3) | 0.17685 (9) | 0.0744 (6) | |
O4 | 0.14523 (12) | 0.4373 (2) | 0.16091 (7) | 0.0610 (5) | |
O5 | 0.14206 (14) | 0.7392 (3) | 0.40100 (8) | 0.0730 (6) | |
C1 | 0.1075 (2) | 0.1595 (5) | −0.11861 (13) | 0.0755 (9) | |
H1 | 0.1043 | 0.0314 | −0.1345 | 0.091* | |
C2 | 0.1090 (2) | 0.3196 (5) | −0.15818 (14) | 0.0827 (9) | |
H2 | 0.1062 | 0.2995 | −0.2012 | 0.099* | |
C3 | 0.1146 (2) | 0.5101 (5) | −0.13485 (14) | 0.0775 (9) | |
H3 | 0.1165 | 0.6174 | −0.1620 | 0.093* | |
C4 | 0.11723 (19) | 0.5398 (4) | −0.07203 (13) | 0.0682 (8) | |
H4 | 0.1203 | 0.6682 | −0.0564 | 0.082* | |
C5 | 0.11538 (17) | 0.3810 (4) | −0.03071 (11) | 0.0509 (6) | |
C6 | 0.11088 (18) | 0.1917 (4) | −0.05564 (12) | 0.0557 (7) | |
C7 | 0.11337 (19) | 0.0428 (4) | 0.04771 (12) | 0.0603 (7) | |
C8 | 0.11338 (17) | 0.2423 (3) | 0.07410 (11) | 0.0497 (6) | |
C9 | 0.11632 (16) | 0.3995 (4) | 0.03580 (11) | 0.0524 (7) | |
H9 | 0.1191 | 0.5255 | 0.0533 | 0.063* | |
C10 | 0.10603 (18) | 0.2654 (4) | 0.14224 (12) | 0.0531 (7) | |
C11 | 0.13845 (18) | 0.5046 (4) | 0.22323 (11) | 0.0535 (7) | |
C12 | 0.16625 (19) | 0.3932 (4) | 0.27383 (12) | 0.0639 (8) | |
H12 | 0.1845 | 0.2623 | 0.2686 | 0.077* | |
C13 | 0.16691 (19) | 0.4769 (4) | 0.33248 (12) | 0.0650 (8) | |
H13 | 0.1863 | 0.4028 | 0.3671 | 0.078* | |
C14 | 0.13875 (19) | 0.6712 (4) | 0.34023 (11) | 0.0567 (7) | |
C15 | 0.11116 (19) | 0.7799 (4) | 0.28884 (11) | 0.0619 (7) | |
H15 | 0.0923 | 0.9104 | 0.2938 | 0.074* | |
C16 | 0.11120 (19) | 0.6972 (4) | 0.22990 (11) | 0.0591 (7) | |
H16 | 0.0929 | 0.7715 | 0.1951 | 0.071* | |
C17 | 0.1323 (2) | 0.9462 (4) | 0.41084 (12) | 0.0645 (7) | |
H17A | 0.0739 | 0.9916 | 0.3926 | 0.077* | |
H17B | 0.1819 | 1.0168 | 0.3909 | 0.077* | |
C18 | 0.1356 (2) | 0.9869 (4) | 0.47999 (11) | 0.0675 (8) | |
H18A | 0.1914 | 0.9287 | 0.4984 | 0.081* | |
H18B | 0.0831 | 0.9239 | 0.4989 | 0.081* | |
C19 | 0.1343 (2) | 1.2047 (4) | 0.49476 (12) | 0.0707 (8) | |
H19A | 0.0812 | 1.2634 | 0.4731 | 0.085* | |
H19B | 0.1893 | 1.2646 | 0.4780 | 0.085* | |
C20 | 0.1304 (2) | 1.2574 (4) | 0.56327 (12) | 0.0723 (8) | |
H20A | 0.0761 | 1.1960 | 0.5806 | 0.087* | |
H20B | 0.1843 | 1.2027 | 0.5850 | 0.087* | |
C21 | 0.1269 (2) | 1.4752 (5) | 0.57543 (13) | 0.0831 (9) | |
H21A | 0.0717 | 1.5278 | 0.5546 | 0.100* | |
H21B | 0.1797 | 1.5360 | 0.5562 | 0.100* | |
C22 | 0.1265 (2) | 1.5383 (5) | 0.64278 (13) | 0.0839 (9) | |
H22A | 0.1818 | 1.4883 | 0.6641 | 0.101* | |
H22B | 0.0734 | 1.4801 | 0.6625 | 0.101* | |
C23 | 0.1229 (3) | 1.7629 (5) | 0.65022 (15) | 0.1031 (12) | |
H23A | 0.1746 | 1.8199 | 0.6287 | 0.124* | |
H23B | 0.0666 | 1.8108 | 0.6295 | 0.124* | |
C24 | 0.1255 (3) | 1.8364 (6) | 0.71544 (16) | 0.1332 (16) | |
H24A | 0.0720 | 1.7894 | 0.7365 | 0.200* | |
H24B | 0.1256 | 1.9785 | 0.7153 | 0.200* | |
H24C | 0.1804 | 1.7889 | 0.7368 | 0.200* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.1120 (16) | 0.0356 (11) | 0.0641 (12) | −0.0062 (10) | 0.0039 (10) | −0.0070 (9) |
O2 | 0.1353 (19) | 0.0309 (12) | 0.0816 (14) | −0.0007 (11) | 0.0057 (12) | 0.0064 (10) |
O3 | 0.1055 (16) | 0.0459 (12) | 0.0723 (12) | −0.0202 (11) | 0.0096 (11) | 0.0020 (10) |
O4 | 0.0867 (14) | 0.0398 (11) | 0.0564 (11) | −0.0166 (9) | 0.0003 (9) | −0.0004 (9) |
O5 | 0.1129 (17) | 0.0487 (13) | 0.0570 (12) | 0.0036 (10) | −0.0023 (10) | −0.0017 (9) |
C1 | 0.103 (2) | 0.059 (2) | 0.0653 (19) | −0.0103 (16) | 0.0005 (16) | −0.0075 (16) |
C2 | 0.098 (3) | 0.090 (3) | 0.0596 (18) | −0.0053 (19) | −0.0046 (16) | 0.0027 (19) |
C3 | 0.097 (3) | 0.066 (2) | 0.069 (2) | 0.0052 (17) | 0.0010 (16) | 0.0184 (17) |
C4 | 0.082 (2) | 0.0507 (18) | 0.0718 (19) | 0.0039 (15) | 0.0006 (15) | 0.0067 (16) |
C5 | 0.0562 (17) | 0.0401 (16) | 0.0562 (15) | 0.0004 (12) | −0.0026 (12) | 0.0034 (13) |
C6 | 0.0659 (19) | 0.0445 (17) | 0.0566 (16) | −0.0040 (13) | −0.0021 (13) | −0.0030 (14) |
C7 | 0.075 (2) | 0.0386 (17) | 0.0672 (18) | −0.0039 (13) | 0.0036 (14) | −0.0036 (15) |
C8 | 0.0573 (17) | 0.0307 (14) | 0.0608 (16) | −0.0013 (11) | −0.0018 (12) | 0.0018 (13) |
C9 | 0.0623 (18) | 0.0326 (15) | 0.0622 (16) | 0.0006 (12) | −0.0020 (12) | −0.0042 (12) |
C10 | 0.0590 (17) | 0.0361 (16) | 0.0639 (17) | −0.0016 (13) | −0.0025 (13) | 0.0025 (14) |
C11 | 0.0697 (19) | 0.0365 (15) | 0.0542 (15) | −0.0078 (12) | 0.0018 (12) | 0.0008 (13) |
C12 | 0.087 (2) | 0.0373 (15) | 0.0670 (18) | 0.0048 (14) | −0.0062 (15) | 0.0005 (14) |
C13 | 0.092 (2) | 0.0435 (17) | 0.0588 (17) | 0.0071 (14) | −0.0091 (14) | 0.0103 (14) |
C14 | 0.0749 (19) | 0.0434 (17) | 0.0515 (16) | −0.0048 (13) | −0.0026 (13) | 0.0046 (13) |
C15 | 0.088 (2) | 0.0377 (15) | 0.0599 (17) | 0.0002 (14) | −0.0029 (14) | 0.0023 (13) |
C16 | 0.081 (2) | 0.0369 (16) | 0.0588 (17) | −0.0038 (13) | −0.0064 (14) | 0.0094 (13) |
C17 | 0.077 (2) | 0.0548 (19) | 0.0615 (17) | 0.0054 (14) | 0.0026 (13) | −0.0055 (14) |
C18 | 0.069 (2) | 0.070 (2) | 0.0638 (17) | 0.0044 (15) | 0.0027 (13) | −0.0025 (15) |
C19 | 0.090 (2) | 0.0596 (19) | 0.0627 (17) | −0.0049 (16) | 0.0010 (15) | −0.0041 (15) |
C20 | 0.086 (2) | 0.060 (2) | 0.0706 (19) | −0.0015 (15) | 0.0053 (15) | −0.0064 (15) |
C21 | 0.106 (3) | 0.067 (2) | 0.076 (2) | 0.0033 (18) | −0.0015 (17) | −0.0039 (17) |
C22 | 0.102 (3) | 0.074 (2) | 0.077 (2) | 0.0031 (18) | 0.0093 (17) | −0.0084 (18) |
C23 | 0.152 (3) | 0.077 (3) | 0.080 (2) | 0.015 (2) | 0.004 (2) | −0.0115 (19) |
C24 | 0.204 (5) | 0.110 (3) | 0.088 (3) | 0.014 (3) | 0.028 (3) | −0.014 (2) |
O1—C6 | 1.376 (3) | C14—C15 | 1.371 (3) |
O1—C7 | 1.381 (3) | C15—C16 | 1.379 (3) |
O2—C7 | 1.194 (3) | C15—H15 | 0.9300 |
O3—C10 | 1.198 (3) | C16—H16 | 0.9300 |
O4—C10 | 1.347 (3) | C17—C18 | 1.503 (3) |
O4—C11 | 1.414 (3) | C17—H17A | 0.9700 |
O5—C14 | 1.378 (3) | C17—H17B | 0.9700 |
O5—C17 | 1.422 (3) | C18—C19 | 1.505 (4) |
C1—C6 | 1.363 (3) | C18—H18A | 0.9700 |
C1—C2 | 1.374 (4) | C18—H18B | 0.9700 |
C1—H1 | 0.9300 | C19—C20 | 1.510 (3) |
C2—C3 | 1.381 (4) | C19—H19A | 0.9700 |
C2—H2 | 0.9300 | C19—H19B | 0.9700 |
C3—C4 | 1.357 (3) | C20—C21 | 1.496 (4) |
C3—H3 | 0.9300 | C20—H20A | 0.9700 |
C4—C5 | 1.390 (3) | C20—H20B | 0.9700 |
C4—H4 | 0.9300 | C21—C22 | 1.502 (4) |
C5—C6 | 1.386 (3) | C21—H21A | 0.9700 |
C5—C9 | 1.427 (3) | C21—H21B | 0.9700 |
C7—C8 | 1.461 (3) | C22—C23 | 1.527 (4) |
C8—C9 | 1.342 (3) | C22—H22A | 0.9700 |
C8—C10 | 1.472 (3) | C22—H22B | 0.9700 |
C9—H9 | 0.9300 | C23—C24 | 1.479 (4) |
C11—C16 | 1.368 (4) | C23—H23A | 0.9700 |
C11—C12 | 1.369 (3) | C23—H23B | 0.9700 |
C12—C13 | 1.375 (3) | C24—H24A | 0.9600 |
C12—H12 | 0.9300 | C24—H24B | 0.9600 |
C13—C14 | 1.386 (4) | C24—H24C | 0.9600 |
C13—H13 | 0.9300 | ||
C6—O1—C7 | 123.4 (2) | C15—C16—H16 | 120.4 |
C10—O4—C11 | 121.06 (19) | O5—C17—C18 | 109.0 (2) |
C14—O5—C17 | 117.82 (19) | O5—C17—H17A | 109.9 |
C6—C1—C2 | 118.8 (3) | C18—C17—H17A | 109.9 |
C6—C1—H1 | 120.6 | O5—C17—H17B | 109.9 |
C2—C1—H1 | 120.6 | C18—C17—H17B | 109.9 |
C1—C2—C3 | 120.8 (3) | H17A—C17—H17B | 108.3 |
C1—C2—H2 | 119.6 | C17—C18—C19 | 112.6 (2) |
C3—C2—H2 | 119.6 | C17—C18—H18A | 109.1 |
C4—C3—C2 | 119.6 (3) | C19—C18—H18A | 109.1 |
C4—C3—H3 | 120.2 | C17—C18—H18B | 109.1 |
C2—C3—H3 | 120.2 | C19—C18—H18B | 109.1 |
C3—C4—C5 | 120.9 (3) | H18A—C18—H18B | 107.8 |
C3—C4—H4 | 119.5 | C18—C19—C20 | 115.8 (2) |
C5—C4—H4 | 119.5 | C18—C19—H19A | 108.3 |
C6—C5—C4 | 117.9 (2) | C20—C19—H19A | 108.3 |
C6—C5—C9 | 117.6 (2) | C18—C19—H19B | 108.3 |
C4—C5—C9 | 124.5 (2) | C20—C19—H19B | 108.3 |
C1—C6—O1 | 118.0 (2) | H19A—C19—H19B | 107.4 |
C1—C6—C5 | 121.8 (2) | C21—C20—C19 | 113.8 (2) |
O1—C6—C5 | 120.2 (2) | C21—C20—H20A | 108.8 |
O2—C7—O1 | 116.1 (2) | C19—C20—H20A | 108.8 |
O2—C7—C8 | 127.4 (2) | C21—C20—H20B | 108.8 |
O1—C7—C8 | 116.5 (2) | C19—C20—H20B | 108.8 |
C9—C8—C7 | 119.6 (2) | H20A—C20—H20B | 107.7 |
C9—C8—C10 | 121.6 (2) | C20—C21—C22 | 116.5 (3) |
C7—C8—C10 | 118.7 (2) | C20—C21—H21A | 108.2 |
C8—C9—C5 | 122.6 (2) | C22—C21—H21A | 108.2 |
C8—C9—H9 | 118.7 | C20—C21—H21B | 108.2 |
C5—C9—H9 | 118.7 | C22—C21—H21B | 108.2 |
O3—C10—O4 | 123.6 (2) | H21A—C21—H21B | 107.3 |
O3—C10—C8 | 126.3 (2) | C21—C22—C23 | 112.5 (3) |
O4—C10—C8 | 110.0 (2) | C21—C22—H22A | 109.1 |
C16—C11—C12 | 121.3 (2) | C23—C22—H22A | 109.1 |
C16—C11—O4 | 115.6 (2) | C21—C22—H22B | 109.1 |
C12—C11—O4 | 122.8 (2) | C23—C22—H22B | 109.1 |
C11—C12—C13 | 119.3 (2) | H22A—C22—H22B | 107.8 |
C11—C12—H12 | 120.4 | C24—C23—C22 | 115.6 (3) |
C13—C12—H12 | 120.4 | C24—C23—H23A | 108.4 |
C12—C13—C14 | 120.3 (2) | C22—C23—H23A | 108.4 |
C12—C13—H13 | 119.9 | C24—C23—H23B | 108.4 |
C14—C13—H13 | 119.9 | C22—C23—H23B | 108.4 |
C15—C14—O5 | 125.3 (2) | H23A—C23—H23B | 107.4 |
C15—C14—C13 | 119.4 (2) | C23—C24—H24A | 109.5 |
O5—C14—C13 | 115.2 (2) | C23—C24—H24B | 109.5 |
C14—C15—C16 | 120.5 (3) | H24A—C24—H24B | 109.5 |
C14—C15—H15 | 119.7 | C23—C24—H24C | 109.5 |
C16—C15—H15 | 119.7 | H24A—C24—H24C | 109.5 |
C11—C16—C15 | 119.2 (2) | H24B—C24—H24C | 109.5 |
C11—C16—H16 | 120.4 | ||
C6—C1—C2—C3 | 0.6 (5) | C9—C8—C10—O3 | 148.8 (3) |
C1—C2—C3—C4 | −1.0 (5) | C7—C8—C10—O3 | −28.5 (4) |
C2—C3—C4—C5 | 0.7 (4) | C9—C8—C10—O4 | −28.8 (3) |
C3—C4—C5—C6 | 0.1 (4) | C7—C8—C10—O4 | 153.9 (2) |
C3—C4—C5—C9 | −178.9 (2) | C10—O4—C11—C16 | −131.1 (3) |
C2—C1—C6—O1 | −179.0 (3) | C10—O4—C11—C12 | 55.5 (3) |
C2—C1—C6—C5 | 0.2 (4) | C16—C11—C12—C13 | −0.1 (4) |
C7—O1—C6—C1 | −179.5 (2) | O4—C11—C12—C13 | 172.9 (2) |
C7—O1—C6—C5 | 1.2 (4) | C11—C12—C13—C14 | 0.7 (4) |
C4—C5—C6—C1 | −0.6 (4) | C17—O5—C14—C15 | −11.9 (4) |
C9—C5—C6—C1 | 178.5 (2) | C17—O5—C14—C13 | 167.5 (2) |
C4—C5—C6—O1 | 178.7 (2) | C12—C13—C14—C15 | −0.7 (4) |
C9—C5—C6—O1 | −2.3 (4) | C12—C13—C14—O5 | 179.8 (2) |
C6—O1—C7—O2 | −176.5 (2) | O5—C14—C15—C16 | 179.5 (2) |
C6—O1—C7—C8 | 1.8 (4) | C13—C14—C15—C16 | 0.1 (4) |
O2—C7—C8—C9 | 174.3 (3) | C12—C11—C16—C15 | −0.5 (4) |
O1—C7—C8—C9 | −3.8 (4) | O4—C11—C16—C15 | −174.0 (2) |
O2—C7—C8—C10 | −8.4 (4) | C14—C15—C16—C11 | 0.5 (4) |
O1—C7—C8—C10 | 173.6 (2) | C14—O5—C17—C18 | 178.6 (2) |
C7—C8—C9—C5 | 2.8 (4) | O5—C17—C18—C19 | 174.9 (2) |
C10—C8—C9—C5 | −174.5 (2) | C17—C18—C19—C20 | 175.7 (2) |
C6—C5—C9—C8 | 0.3 (4) | C18—C19—C20—C21 | −178.6 (3) |
C4—C5—C9—C8 | 179.2 (3) | C19—C20—C21—C22 | −177.7 (3) |
C11—O4—C10—O3 | −4.6 (4) | C20—C21—C22—C23 | 180.0 (3) |
C11—O4—C10—C8 | 173.1 (2) | C21—C22—C23—C24 | −178.1 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
C4—H4···O1i | 0.93 | 2.59 | 3.513 (4) | 174 |
C9—H9···O2i | 0.93 | 2.51 | 3.420 (3) | 167 |
C16—H16···O2ii | 0.93 | 2.71 | 3.551 (3) | 151 |
C16—H16···O3ii | 0.93 | 2.63 | 3.338 (3) | 133 |
Symmetry codes: (i) x, y+1, z; (ii) −x, −y+1, −z. |
Experimental details
Crystal data | |
Chemical formula | C24H26O5 |
Mr | 394.45 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 293 |
a, b, c (Å) | 14.464 (3), 6.7548 (15), 21.381 (5) |
β (°) | 91.663 (8) |
V (Å3) | 2088.0 (8) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.29 × 0.25 × 0.21 |
Data collection | |
Diffractometer | Bruker SMART CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2007) |
Tmin, Tmax | 0.975, 0.982 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 22609, 3615, 1926 |
Rint | 0.084 |
(sin θ/λ)max (Å−1) | 0.595 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.058, 0.146, 0.94 |
No. of reflections | 3615 |
No. of parameters | 264 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.18, −0.14 |
Computer programs: SMART (Bruker, 2001), SAINT (Bruker, 2001), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), ORTEP-3 (Farrugia, 2012).
D—H···A | D—H | H···A | D···A | D—H···A |
C4—H4···O1i | 0.93 | 2.5900 | 3.513 (4) | 174.00 |
C9—H9···O2i | 0.93 | 2.5100 | 3.420 (3) | 167.00 |
C16—H16···O2ii | 0.93 | 2.71 | 3.551 (3) | 150.67 |
C16—H16···O3ii | 0.93 | 2.63 | 3.338 (3) | 132.93 |
Symmetry codes: (i) x, y+1, z; (ii) −x, −y+1, −z. |
Acknowledgements
The authors thank Professor T. N. Guru Row, Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore, and P. A. Suchetan, Department of Studies and Research in Chemistry, U·C.S. Tumkur University, Tumkur, for their help and suggestions.
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Coumarin derivatives have been attracted increasing attention due to their extensive biological applications, such as anticancer, anti-inflammatory and anticoagulant agents (Georgieva et al., 2004; Creaven et al., 2005). The coumarin nucleus has been the focus of our recent research concerning the design, synthesis and characterization to investigate their liquid crystal properties together with crystal structure studies (Morita et al., 2005; Tian et al., 2003). Coumarins are interesting class of heterocycles because of their dipolar moment increases by external stimulus such as light, temperature, electric current and chemical reaction (Iliopoulos et al., 2010). The excitation of the coumarin chromophore increases the electron density of its carbonyl groups owing to excited photochemical and photophysical properties such as molecular fluorescent sensors, laser dyes and many industrial applications (Hejchman et al., 2011).
The asymmetric unit of 4-(octyloxy)phenyl 2-oxo-2H-chromene-3 -carboxylate is shown in Fig. 1. The 2H-chromene ring (O1/C1–C9) system is planar, with a maximum deviation of 0.028 (2) Å for atom C8. The dihedral angle between 2H-chromene ring (O1/C1–C9) and benzene ring (C11–C16) is 21.11 (1)°. The crystal structure is characterized by intermolecular C4—H4···O1 and C9—H9···O2 hydrogen bonding generating an R2 2(8) ring pattern (Bernstein et al., 1995). Bifurcated C16—H16···O2 and C16—H16···O3 contacts further strengthen the packing, Fig. 2.