organic compounds
(2,7-Dimethoxynaphthalene-1,8-diyl)bis(4-fluorobenzoyl)dimethanone
aDepartment of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture & Technology, Koganei, Tokyo 184-8588, Japan, and bInstrumentation Analysis Center, Tokyo University of Agriculture & Technology, Koganei, Tokyo 184-8588, Japan
*Correspondence e-mail: yonezawa@cc.tuat.ac.jp
The title compound, C26H18F2O4, is a naphthalene derivative in which the two aroyl groups at the 1- and 8-positions (peri positions) are anti to each other. There is an appreciable difference in the dihedral angles between the naphthalene ring system and the two benzene rings [66.88 (7)° and 88.09 (6)°]. In the crystal, weak C—H⋯O interactions involving one of the carbonyl groups and an aromatic C—H group ortho to the F atom seem to stabilize the packing of the molecules.
Related literature
Our study on the selective electrophilic aromatic aroylation of 2,7-dimethoxynaphthalene, has shown peri-aroylnaphthalene compounds to be formed regioselectively with the aid of a suitable acidic mediator, see: (Okamoto & Yonezawa, 2009). For related structures, see: Nakaema et al. (2007, 2008); Mitsui et al. (2009).
Experimental
Crystal data
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Refinement
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Data collection: PROCESS-AUTO (Rigaku, 1998); cell PROCESS-AUTO; data reduction: CrystalStructure (Rigaku/MSC, 2004); program(s) used to solve structure: SIR2004 (Burla et al., 2005); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP (Burnett & Johnson, 1996); software used to prepare material for publication: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536810000486/ds2015sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810000486/ds2015Isup2.hkl
To a 10 ml flask, 4-fluorobenzoic acid (4.4 mmol, 616.5 mg) and phosphorus pentoxide–methanesulfonic acid (P2O5–MsOH; 8.8 ml) were placed and stirred at 60°C. To the reaction mixture thus obtained, 2,7-dimethoxynaphthalene (2.0 mmol, 376.4 mg) was added. After the reaction mixture was stirred at 60 °C for 1 h, it was poured into ice-cold water (10 ml) and the mixture was extracted with CHCl3 (10 ml × 3). The combined extracts were washed with 2 M aqueous NaOH followed by washing with brine. The organic layers thus obtained were dried over anhydrous MgSO4. The solvent was removed under reduced pressure to give cake (98% yield). Crude product was purified by recrystallization from EtOH (77% isolated yield). Furthermore, the isolated product was crystallized from toluene–hexane to give single-crystal.
Spectroscopic Data:
1H NMR δ (300 MHz, CDCl3): 3.70 (6H, s), 7.02 (4H, dd, J = 8.6 Hz), 7.21 (2H, d, J = 8.7 Hz), 7.71 (4H, dd, J = 8.41 Hz), 7.96 (2H, d, J = 8.7 Hz). 13C NMR δ (300 MHz, CDCl3): 56.289, 111.12, 114.92, 115.21, 125.47, 129.76, 131.52, 131.64, 132.25, 135.19, 156.24, 163.81, 167.17, 195.38. IR (KBr): 1596 (C=O), 1270 (Ar–O–Me). m.p. = 196°C. Anal. Calcd for C26H18F2O4; C, 70.27; H, 4.20. Found C, 72.05; H, 4.20.
All the H atoms were found in difference maps and were subsequently refined as riding atoms, with C—H = 0.93 (aromatic) and 0.96 (methyl) Å, and Uiso(H) = 1.2Ueq(C).
In the course of our study on selective electrophilic aromatic aroylation of 2,7-dimethoxynaphthalene, peri-aroylnaphthalene compounds have proved to be formed regioselectively with the aid of suitable acidic mediator (Okamoto & Yonezawa, 2009). The aroyl groups at 1,8-positions of the naphthalene rings in these compounds are oriented in opposite fashion and are found to be non-coplanar resulting in partial disruption in π-conjugation systems. Recently, we have reported the X-ray crystal structures of 1,8-bis(4-chlorobenzoyl)-2,7-dimethoxynaphthalene (Nakaema et al., 2007) and 1,8-dibenzoyl-2,7-dimethoxynaphthalene (Nakaema et al., 2008). As a part of the course of our continuous study on the molecular structures of this kind of homologous molecules, the X-ray of title compound, peri-aroylnaphthalene bearing fluoro groups, is discussed in this report.
In the molecule (Fig. 1), the dihedral angle between benzene rings [C12–C17] and [C19–C24] is 32.34 (8)°, which is distinctively larger than that of 1,8-bis(4-chlorobenzoyl)-2,7-dimethoxynaphthalene [7.99 (8)°]. The dihedral angles between the naphthalene ring [C1–C10] plane and the planes of two benzene rings [C12–C17] and [C19–C24] are 66.88 (7)° and 88.12 (6)°, respectively. The difference between two dihedral angles is larger than that of the analogous compound, which has the corresponding angles of 71.98 (7)° and 71.55 (7)°.
The molecules are packed in the
apparently stabilized by C—H···O interactions inovolving C16, C21 and O1 [2.54 Å, 158° and 2.68 Å, 161°](Fig. 2 and Table 1).Our study on the selective electrophilic aromatic aroylation of 2,7-dimethoxynaphthalene, has shown peri-aroylnaphthalene compounds to be formed regioselectively with the aid of a suitable acidic mediator, see: (Okamoto & Yonezawa, 2009). For related structures, see: Nakaema et al. (2007, 2008); Mitsui et al. (2009).
Data collection: PROCESS-AUTO (Rigaku, 1998); cell
PROCESS-AUTO (Rigaku, 1998); data reduction: CrystalStructure (Rigaku/MSC, 2004); program(s) used to solve structure: SIR2004 (Burla et al., 2005); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP (Burnett & Johnson, 1996); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).Fig. 1. Molecular structure with displacement ellipsoids at 50% probability for non-H atoms. | |
Fig. 2. Weak C–H···O interactions (dotted lines). |
C26H18F2O4 | F(000) = 896 |
Mr = 432.42 | Dx = 1.427 Mg m−3 |
Monoclinic, P21/c | Melting point: 469 K |
Hall symbol: -P 2ybc | Cu Kα radiation, λ = 1.54187 Å |
a = 9.87444 (18) Å | Cell parameters from 33844 reflections |
b = 17.0275 (3) Å | θ = 3.7–68.2° |
c = 14.9671 (3) Å | µ = 0.91 mm−1 |
β = 126.871 (1)° | T = 296 K |
V = 2013.19 (7) Å3 | Platelet, yellow |
Z = 4 | 0.40 × 0.40 × 0.10 mm |
Rigaku R-AXIS RAPID diffractometer | 3682 independent reflections |
Radiation source: fine-focus sealed tube | 3338 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.030 |
Detector resolution: 10.00 pixels mm-1 | θmax = 68.2°, θmin = 4.5° |
ω scans | h = −11→11 |
Absorption correction: numerical (NUMABS; Higashi, 1999) | k = −20→20 |
Tmin = 0.713, Tmax = 0.915 | l = −18→18 |
36825 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)] = 0.034 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.095 | w = 1/[σ2(Fo2) + (0.0494P)2 + 0.3061P] where P = (Fo2 + 2Fc2)/3 |
S = 1.07 | (Δ/σ)max < 0.001 |
3682 reflections | Δρmax = 0.22 e Å−3 |
314 parameters | Δρmin = −0.18 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: 0.0030 (3) |
C26H18F2O4 | V = 2013.19 (7) Å3 |
Mr = 432.42 | Z = 4 |
Monoclinic, P21/c | Cu Kα radiation |
a = 9.87444 (18) Å | µ = 0.91 mm−1 |
b = 17.0275 (3) Å | T = 296 K |
c = 14.9671 (3) Å | 0.40 × 0.40 × 0.10 mm |
β = 126.871 (1)° |
Rigaku R-AXIS RAPID diffractometer | 3682 independent reflections |
Absorption correction: numerical (NUMABS; Higashi, 1999) | 3338 reflections with I > 2σ(I) |
Tmin = 0.713, Tmax = 0.915 | Rint = 0.030 |
36825 measured reflections |
R[F2 > 2σ(F2)] = 0.034 | 0 restraints |
wR(F2) = 0.095 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.07 | Δρmax = 0.22 e Å−3 |
3682 reflections | Δρmin = −0.18 e Å−3 |
314 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 | ||
F1 | −0.21053 (13) | 0.44424 (5) | −0.09780 (9) | 0.0824 (3) | |
F2 | 0.35965 (13) | 0.21569 (6) | 0.65179 (7) | 0.0878 (3) | |
O1 | −0.24490 (12) | 0.16209 (5) | 0.15843 (7) | 0.0570 (2) | |
O2 | 0.09608 (12) | 0.18156 (5) | 0.15466 (8) | 0.0598 (2) | |
O3 | −0.55074 (11) | 0.11265 (6) | −0.11168 (8) | 0.0634 (3) | |
O4 | 0.31918 (12) | 0.01602 (6) | 0.31605 (8) | 0.0684 (3) | |
C1 | −0.26555 (15) | 0.08412 (7) | 0.02104 (9) | 0.0444 (3) | |
C2 | −0.42192 (16) | 0.05978 (7) | −0.07141 (10) | 0.0503 (3) | |
C3 | −0.44496 (18) | −0.01516 (8) | −0.11871 (11) | 0.0587 (3) | |
H1 | −0.5531 | −0.0296 | −0.1825 | 0.070* | |
C4 | −0.31155 (19) | −0.06521 (7) | −0.07028 (11) | 0.0580 (3) | |
H2 | −0.3237 | −0.1170 | −0.1017 | 0.070* | |
C5 | −0.15072 (17) | −0.04486 (7) | 0.02702 (10) | 0.0501 (3) | |
C6 | −0.01766 (19) | −0.10000 (7) | 0.08034 (12) | 0.0574 (3) | |
H3 | −0.0389 | −0.1520 | 0.0463 | 0.067* | |
C7 | 0.13559 (18) | −0.08282 (8) | 0.17722 (11) | 0.0573 (3) | |
H4 | 0.2247 | −0.1225 | 0.2143 | 0.071* | |
C8 | 0.16525 (16) | −0.00701 (7) | 0.22300 (10) | 0.0516 (3) | |
C9 | 0.04104 (15) | 0.05019 (7) | 0.17254 (9) | 0.0450 (3) | |
C10 | −0.12396 (15) | 0.03188 (7) | 0.07386 (9) | 0.0438 (3) | |
C11 | −0.25571 (14) | 0.16202 (7) | 0.07300 (9) | 0.0444 (3) | |
C12 | −0.25352 (14) | 0.23685 (7) | 0.02252 (9) | 0.0449 (3) | |
C13 | −0.20106 (18) | 0.30478 (8) | 0.08654 (11) | 0.0559 (3) | |
H5 | −0.1715 | 0.3006 | 0.1573 | 0.068* | |
C14 | −0.1873 (2) | 0.37483 (8) | 0.04636 (12) | 0.0631 (4) | |
H6 | −0.1474 | 0.4221 | 0.0902 | 0.077* | |
C15 | −0.22767 (18) | 0.37560 (8) | −0.05889 (12) | 0.0592 (3) | |
C16 | −0.28166 (19) | 0.31051 (8) | −0.12562 (11) | 0.0614 (3) | |
H7 | −0.3057 | 0.3146 | −0.2008 | 0.086* | |
C17 | −0.29344 (17) | 0.24052 (7) | −0.08343 (10) | 0.0526 (3) | |
H8 | −0.3335 | 0.1938 | −0.1306 | 0.059* | |
C18 | 0.09933 (14) | 0.13262 (7) | 0.21535 (10) | 0.0461 (3) | |
C19 | 0.16719 (14) | 0.15291 (7) | 0.33199 (10) | 0.0459 (3) | |
C20 | 0.29027 (17) | 0.21100 (8) | 0.38710 (12) | 0.0576 (3) | |
H9 | 0.3323 | 0.2342 | 0.3471 | 0.074* | |
C21 | 0.35501 (18) | 0.23239 (9) | 0.49493 (12) | 0.0642 (4) | |
H10 | 0.4460 | 0.2721 | 0.5367 | 0.088* | |
C22 | 0.29323 (17) | 0.19592 (8) | 0.54466 (11) | 0.0598 (4) | |
C23 | 0.17105 (17) | 0.13886 (9) | 0.49316 (11) | 0.0597 (3) | |
H11 | 0.1302 | 0.1174 | 0.5288 | 0.071* | |
C24 | 0.10868 (16) | 0.11671 (8) | 0.38576 (10) | 0.0527 (3) | |
H12 | 0.0217 | 0.0758 | 0.3467 | 0.062* | |
C25 | −0.71784 (19) | 0.08920 (13) | −0.20143 (14) | 0.0706 (4) | |
C26 | 0.4565 (2) | −0.03775 (11) | 0.36866 (15) | 0.0697 (4) | |
H13 | −0.751 (3) | 0.0383 (12) | −0.1820 (16) | 0.098 (6)* | |
H14 | −0.786 (3) | 0.1326 (12) | −0.2121 (15) | 0.088 (6)* | |
H15 | −0.728 (2) | 0.0805 (11) | −0.2710 (16) | 0.094 (6)* | |
H16 | 0.429 (2) | −0.0860 (11) | 0.3956 (14) | 0.081 (5)* | |
H17 | 0.556 (3) | −0.0075 (11) | 0.4306 (16) | 0.094 (6)* | |
H18 | 0.479 (2) | −0.0552 (10) | 0.3166 (15) | 0.082 (5)* |
U11 | U22 | U33 | U12 | U13 | U23 | |
F1 | 0.1025 (7) | 0.0541 (5) | 0.1006 (7) | 0.0052 (4) | 0.0663 (6) | 0.0177 (4) |
F2 | 0.0833 (6) | 0.1105 (8) | 0.0550 (5) | −0.0057 (5) | 0.0337 (5) | −0.0239 (5) |
O1 | 0.0680 (6) | 0.0644 (6) | 0.0454 (5) | 0.0048 (4) | 0.0377 (4) | 0.0000 (4) |
O2 | 0.0666 (6) | 0.0548 (5) | 0.0592 (5) | −0.0018 (4) | 0.0384 (5) | 0.0083 (4) |
O3 | 0.0468 (5) | 0.0667 (6) | 0.0569 (5) | −0.0010 (4) | 0.0206 (4) | −0.0085 (4) |
O4 | 0.0548 (5) | 0.0657 (6) | 0.0631 (6) | 0.0165 (4) | 0.0237 (5) | 0.0001 (5) |
C1 | 0.0507 (6) | 0.0438 (6) | 0.0414 (6) | −0.0025 (5) | 0.0291 (5) | −0.0006 (5) |
C2 | 0.0523 (7) | 0.0531 (7) | 0.0445 (6) | −0.0034 (5) | 0.0285 (6) | −0.0011 (5) |
C3 | 0.0631 (8) | 0.0568 (7) | 0.0490 (7) | −0.0149 (6) | 0.0297 (6) | −0.0093 (6) |
C4 | 0.0771 (9) | 0.0442 (7) | 0.0547 (7) | −0.0094 (6) | 0.0406 (7) | −0.0078 (5) |
C5 | 0.0678 (8) | 0.0425 (6) | 0.0498 (6) | −0.0030 (5) | 0.0405 (6) | −0.0011 (5) |
C6 | 0.0821 (9) | 0.0425 (6) | 0.0613 (8) | 0.0044 (6) | 0.0503 (8) | 0.0006 (6) |
C7 | 0.0729 (9) | 0.0493 (7) | 0.0589 (8) | 0.0160 (6) | 0.0444 (7) | 0.0089 (6) |
C8 | 0.0579 (7) | 0.0525 (7) | 0.0489 (6) | 0.0078 (6) | 0.0345 (6) | 0.0051 (5) |
C9 | 0.0527 (7) | 0.0435 (6) | 0.0443 (6) | 0.0026 (5) | 0.0321 (5) | 0.0020 (5) |
C10 | 0.0548 (7) | 0.0418 (6) | 0.0416 (6) | −0.0004 (5) | 0.0325 (5) | 0.0016 (5) |
C11 | 0.0403 (6) | 0.0519 (7) | 0.0381 (6) | 0.0034 (5) | 0.0218 (5) | −0.0015 (5) |
C12 | 0.0437 (6) | 0.0462 (6) | 0.0427 (6) | 0.0053 (5) | 0.0248 (5) | −0.0016 (5) |
C13 | 0.0647 (8) | 0.0530 (7) | 0.0477 (7) | 0.0040 (6) | 0.0325 (6) | −0.0046 (5) |
C14 | 0.0718 (9) | 0.0458 (7) | 0.0674 (8) | 0.0003 (6) | 0.0395 (7) | −0.0074 (6) |
C15 | 0.0637 (8) | 0.0480 (7) | 0.0692 (8) | 0.0074 (6) | 0.0417 (7) | 0.0103 (6) |
C16 | 0.0732 (9) | 0.0610 (8) | 0.0541 (7) | 0.0048 (7) | 0.0405 (7) | 0.0063 (6) |
C17 | 0.0621 (8) | 0.0508 (7) | 0.0463 (6) | 0.0010 (6) | 0.0332 (6) | −0.0035 (5) |
C18 | 0.0426 (6) | 0.0462 (6) | 0.0491 (6) | 0.0034 (5) | 0.0272 (5) | 0.0038 (5) |
C19 | 0.0427 (6) | 0.0425 (6) | 0.0486 (6) | 0.0023 (5) | 0.0253 (5) | 0.0003 (5) |
C20 | 0.0559 (7) | 0.0527 (7) | 0.0665 (8) | −0.0071 (6) | 0.0380 (7) | −0.0078 (6) |
C21 | 0.0566 (8) | 0.0597 (8) | 0.0686 (9) | −0.0104 (6) | 0.0334 (7) | −0.0187 (7) |
C22 | 0.0516 (7) | 0.0667 (8) | 0.0469 (7) | 0.0060 (6) | 0.0220 (6) | −0.0099 (6) |
C23 | 0.0537 (7) | 0.0735 (9) | 0.0485 (7) | 0.0017 (6) | 0.0288 (6) | 0.0034 (6) |
C24 | 0.0478 (6) | 0.0552 (7) | 0.0477 (6) | −0.0050 (5) | 0.0246 (5) | 0.0001 (5) |
C25 | 0.0494 (8) | 0.0904 (12) | 0.0578 (9) | −0.0087 (8) | 0.0247 (7) | −0.0112 (8) |
C26 | 0.0586 (9) | 0.0752 (10) | 0.0733 (10) | 0.0202 (8) | 0.0385 (8) | 0.0156 (8) |
F1—C15 | 1.3610 (15) | C12—C13 | 1.3888 (17) |
F2—C22 | 1.3611 (15) | C13—C14 | 1.379 (2) |
O1—C11 | 1.2176 (14) | C13—H5 | 0.9168 |
O2—C18 | 1.2188 (14) | C14—C15 | 1.374 (2) |
O3—C2 | 1.3681 (16) | C14—H6 | 0.9600 |
O3—C25 | 1.4236 (17) | C15—C16 | 1.368 (2) |
O4—C8 | 1.3651 (16) | C16—C17 | 1.3859 (19) |
O4—C26 | 1.4197 (17) | C16—H7 | 1.0036 |
C1—C2 | 1.3808 (17) | C17—H8 | 0.9758 |
C1—C10 | 1.4299 (16) | C18—C19 | 1.4874 (16) |
C1—C11 | 1.5110 (16) | C19—C24 | 1.3854 (17) |
C2—C3 | 1.4100 (18) | C19—C20 | 1.3902 (17) |
C3—C4 | 1.357 (2) | C20—C21 | 1.381 (2) |
C3—H1 | 0.9430 | C20—H9 | 0.9912 |
C4—C5 | 1.4099 (19) | C21—C22 | 1.363 (2) |
C4—H2 | 0.9717 | C21—H10 | 0.9902 |
C5—C6 | 1.4094 (18) | C22—C23 | 1.370 (2) |
C5—C10 | 1.4305 (16) | C23—C24 | 1.3847 (18) |
C6—C7 | 1.358 (2) | C23—H11 | 0.9157 |
C6—H3 | 0.9791 | C24—H12 | 0.9809 |
C7—C8 | 1.4074 (18) | C25—H13 | 1.03 (2) |
C7—H4 | 0.9755 | C25—H14 | 0.95 (2) |
C8—C9 | 1.3826 (17) | C25—H15 | 1.00 (2) |
C9—C10 | 1.4302 (17) | C26—H16 | 1.018 (19) |
C9—C18 | 1.5065 (16) | C26—H17 | 1.00 (2) |
C11—C12 | 1.4881 (16) | C26—H18 | 0.975 (19) |
C12—C17 | 1.3869 (16) | ||
C2—O3—C25 | 118.43 (12) | C13—C14—H6 | 122.3 |
C8—O4—C26 | 119.26 (12) | F1—C15—C16 | 118.51 (13) |
C2—C1—C10 | 120.12 (11) | F1—C15—C14 | 118.29 (13) |
C2—C1—C11 | 117.85 (11) | C16—C15—C14 | 123.19 (12) |
C10—C1—C11 | 121.47 (10) | C15—C16—C17 | 117.81 (12) |
O3—C2—C1 | 115.41 (11) | C15—C16—H7 | 119.3 |
O3—C2—C3 | 123.16 (11) | C17—C16—H7 | 122.8 |
C1—C2—C3 | 121.42 (12) | C16—C17—C12 | 121.05 (12) |
C4—C3—C2 | 119.20 (12) | C16—C17—H8 | 118.7 |
C4—C3—H1 | 121.6 | C12—C17—H8 | 120.3 |
C2—C3—H1 | 119.2 | O2—C18—C19 | 120.52 (11) |
C3—C4—C5 | 121.88 (12) | O2—C18—C9 | 119.18 (11) |
C3—C4—H2 | 120.8 | C19—C18—C9 | 120.24 (10) |
C5—C4—H2 | 117.3 | C24—C19—C20 | 119.52 (11) |
C6—C5—C4 | 120.71 (11) | C24—C19—C18 | 121.83 (11) |
C6—C5—C10 | 119.72 (12) | C20—C19—C18 | 118.64 (11) |
C4—C5—C10 | 119.55 (12) | C21—C20—C19 | 120.52 (13) |
C7—C6—C5 | 121.59 (12) | C21—C20—H9 | 122.1 |
C7—C6—H3 | 120.2 | C19—C20—H9 | 117.3 |
C5—C6—H3 | 118.2 | C22—C21—C20 | 118.23 (13) |
C6—C7—C8 | 119.37 (12) | C22—C21—H10 | 120.0 |
C6—C7—H4 | 120.4 | C20—C21—H10 | 121.7 |
C8—C7—H4 | 120.3 | F2—C22—C21 | 118.26 (13) |
O4—C8—C9 | 115.77 (11) | F2—C22—C23 | 118.51 (14) |
O4—C8—C7 | 122.63 (11) | C21—C22—C23 | 123.20 (12) |
C9—C8—C7 | 121.52 (12) | C22—C23—C24 | 118.31 (13) |
C8—C9—C10 | 119.88 (11) | C22—C23—H11 | 120.2 |
C8—C9—C18 | 115.89 (11) | C24—C23—H11 | 121.5 |
C10—C9—C18 | 123.37 (10) | C23—C24—C19 | 120.21 (12) |
C1—C10—C9 | 124.44 (10) | C23—C24—H12 | 120.4 |
C1—C10—C5 | 117.74 (11) | C19—C24—H12 | 119.4 |
C9—C10—C5 | 117.78 (11) | O3—C25—H13 | 110.7 (11) |
O1—C11—C12 | 120.91 (10) | O3—C25—H14 | 104.1 (11) |
O1—C11—C1 | 118.64 (11) | H13—C25—H14 | 113.3 (16) |
C12—C11—C1 | 120.42 (9) | O3—C25—H15 | 111.1 (11) |
C17—C12—C13 | 118.93 (11) | H13—C25—H15 | 108.7 (15) |
C17—C12—C11 | 122.58 (10) | H14—C25—H15 | 109.0 (15) |
C13—C12—C11 | 118.41 (10) | O4—C26—H16 | 110.5 (10) |
C14—C13—C12 | 120.87 (12) | O4—C26—H17 | 105.2 (11) |
C14—C13—H5 | 121.7 | H16—C26—H17 | 113.2 (15) |
C12—C13—H5 | 117.4 | O4—C26—H18 | 110.6 (10) |
C15—C14—C13 | 118.15 (12) | H16—C26—H18 | 108.1 (14) |
C15—C14—H6 | 119.6 | H17—C26—H18 | 109.3 (16) |
C25—O3—C2—C1 | −175.20 (12) | C10—C1—C11—O1 | −68.78 (15) |
C25—O3—C2—C3 | 3.86 (19) | C2—C1—C11—C12 | −79.42 (14) |
C10—C1—C2—O3 | 176.46 (10) | C10—C1—C11—C12 | 109.20 (12) |
C11—C1—C2—O3 | 4.95 (16) | O1—C11—C12—C17 | −168.99 (12) |
C10—C1—C2—C3 | −2.62 (18) | C1—C11—C12—C17 | 13.08 (17) |
C11—C1—C2—C3 | −174.13 (11) | O1—C11—C12—C13 | 14.35 (17) |
O3—C2—C3—C4 | −177.06 (12) | C1—C11—C12—C13 | −163.58 (11) |
C1—C2—C3—C4 | 2.0 (2) | C17—C12—C13—C14 | −0.5 (2) |
C2—C3—C4—C5 | 0.9 (2) | C11—C12—C13—C14 | 176.26 (12) |
C3—C4—C5—C6 | 175.24 (12) | C12—C13—C14—C15 | 0.3 (2) |
C3—C4—C5—C10 | −2.9 (2) | C13—C14—C15—F1 | −178.54 (13) |
C4—C5—C6—C7 | −176.63 (13) | C13—C14—C15—C16 | 0.4 (2) |
C10—C5—C6—C7 | 1.52 (19) | F1—C15—C16—C17 | 178.04 (13) |
C5—C6—C7—C8 | −3.0 (2) | C14—C15—C16—C17 | −0.9 (2) |
C26—O4—C8—C9 | −176.00 (12) | C15—C16—C17—C12 | 0.7 (2) |
C26—O4—C8—C7 | 0.9 (2) | C13—C12—C17—C16 | 0.01 (19) |
C6—C7—C8—O4 | −175.71 (12) | C11—C12—C17—C16 | −176.63 (12) |
C6—C7—C8—C9 | 1.0 (2) | C8—C9—C18—O2 | 111.97 (13) |
O4—C8—C9—C10 | 179.36 (10) | C10—C9—C18—O2 | −57.38 (16) |
C7—C8—C9—C10 | 2.44 (18) | C8—C9—C18—C19 | −65.30 (14) |
O4—C8—C9—C18 | 9.61 (16) | C10—C9—C18—C19 | 125.35 (12) |
C7—C8—C9—C18 | −167.31 (11) | O2—C18—C19—C24 | 150.27 (12) |
C2—C1—C10—C9 | −177.21 (11) | C9—C18—C19—C24 | −32.49 (17) |
C11—C1—C10—C9 | −6.01 (17) | O2—C18—C19—C20 | −28.41 (17) |
C2—C1—C10—C5 | 0.53 (16) | C9—C18—C19—C20 | 148.83 (12) |
C11—C1—C10—C5 | 171.73 (10) | C24—C19—C20—C21 | 0.4 (2) |
C8—C9—C10—C1 | 173.95 (11) | C18—C19—C20—C21 | 179.11 (12) |
C18—C9—C10—C1 | −17.11 (17) | C19—C20—C21—C22 | −0.9 (2) |
C8—C9—C10—C5 | −3.79 (16) | C20—C21—C22—F2 | 178.54 (12) |
C18—C9—C10—C5 | 165.16 (11) | C20—C21—C22—C23 | 0.4 (2) |
C6—C5—C10—C1 | −176.01 (10) | F2—C22—C23—C24 | −177.46 (12) |
C4—C5—C10—C1 | 2.16 (16) | C21—C22—C23—C24 | 0.7 (2) |
C6—C5—C10—C9 | 1.88 (16) | C22—C23—C24—C19 | −1.2 (2) |
C4—C5—C10—C9 | −179.95 (11) | C20—C19—C24—C23 | 0.70 (19) |
C2—C1—C11—O1 | 102.61 (13) | C18—C19—C24—C23 | −177.97 (12) |
D—H···A | D—H | H···A | D···A | D—H···A |
C16—H7···O1i | 1.00 | 2.54 | 3.493 (2) | 158 |
C21—H10···O1ii | 0.99 | 2.68 | 3.636 (2) | 161 |
Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) x+1, −y+1/2, z+1/2. |
Experimental details
Crystal data | |
Chemical formula | C26H18F2O4 |
Mr | 432.42 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 296 |
a, b, c (Å) | 9.87444 (18), 17.0275 (3), 14.9671 (3) |
β (°) | 126.871 (1) |
V (Å3) | 2013.19 (7) |
Z | 4 |
Radiation type | Cu Kα |
µ (mm−1) | 0.91 |
Crystal size (mm) | 0.40 × 0.40 × 0.10 |
Data collection | |
Diffractometer | Rigaku R-AXIS RAPID |
Absorption correction | Numerical (NUMABS; Higashi, 1999) |
Tmin, Tmax | 0.713, 0.915 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 36825, 3682, 3338 |
Rint | 0.030 |
(sin θ/λ)max (Å−1) | 0.602 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.034, 0.095, 1.07 |
No. of reflections | 3682 |
No. of parameters | 314 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.22, −0.18 |
Computer programs: PROCESS-AUTO (Rigaku, 1998), CrystalStructure (Rigaku/MSC, 2004), SIR2004 (Burla et al., 2005), SHELXL97 (Sheldrick, 2008), ORTEP (Burnett & Johnson, 1996).
D—H···A | D—H | H···A | D···A | D—H···A |
C16—H7···O1i | 1.00 | 2.54 | 3.493 (2) | 158 |
C21—H10···O1ii | 0.99 | 2.68 | 3.636 (2) | 161 |
Symmetry codes: (i) x, −y+1/2, z−1/2; (ii) x+1, −y+1/2, z+1/2. |
Acknowledgements
This work was partially supported by the Iketani Science and Technology Foundation, Tokyo, Japan.
References
Burla, M. C., Caliandro, R., Camalli, M., Carrozzini, B., Cascarano, G. L., De Caro, L., Giacovazzo, C., Polidori, G. & Spagna, R. (2005). J. Appl. Cryst. 38, 381–388. Web of Science CrossRef CAS IUCr Journals Google Scholar
Burnett, M. N. & Johnson, C. K. (1996). ORTEPIII. Report ORNL-6895. Oak Ridge National Laboratory. Tennessee, USA. Google Scholar
Higashi, T. (1999). NUMABS. Rigaku Corporation, Tokyo, Japan. Google Scholar
Mitsui, R., Noguchi, K. & Yonezawa, N. (2009). Acta Cryst. E65, o543. Web of Science CSD CrossRef IUCr Journals Google Scholar
Nakaema, K., Okamoto, A., Noguchi, K. & Yonezawa, N. (2007). Acta Cryst. E63, o4120. Web of Science CSD CrossRef IUCr Journals Google Scholar
Nakaema, K., Watanabe, S., Okamoto, A., Noguchi, K. & Yonezawa, N. (2008). Acta Cryst. E64, o807. Web of Science CSD CrossRef IUCr Journals Google Scholar
Okamoto, A. & Yonezawa, N. (2009). Chem. Lett. 38, 914–915. Web of Science CrossRef CAS Google Scholar
Rigaku (1998). PROCESS-AUTO. Rigaku Corporation, Tokyo, Japan. Google Scholar
Rigaku/MSC (2004). CrystalStructure. Rigaku/MSC, The Woodlands, Texas, USA. Google Scholar
Sheldrick, G. M. (2008). Acta Cryst. A64, 112–122. Web of Science CrossRef CAS IUCr Journals Google Scholar
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.
In the course of our study on selective electrophilic aromatic aroylation of 2,7-dimethoxynaphthalene, peri-aroylnaphthalene compounds have proved to be formed regioselectively with the aid of suitable acidic mediator (Okamoto & Yonezawa, 2009). The aroyl groups at 1,8-positions of the naphthalene rings in these compounds are oriented in opposite fashion and are found to be non-coplanar resulting in partial disruption in π-conjugation systems. Recently, we have reported the X-ray crystal structures of 1,8-bis(4-chlorobenzoyl)-2,7-dimethoxynaphthalene (Nakaema et al., 2007) and 1,8-dibenzoyl-2,7-dimethoxynaphthalene (Nakaema et al., 2008). As a part of the course of our continuous study on the molecular structures of this kind of homologous molecules, the X-ray crystal structure of title compound, peri-aroylnaphthalene bearing fluoro groups, is discussed in this report.
In the molecule (Fig. 1), the dihedral angle between benzene rings [C12–C17] and [C19–C24] is 32.34 (8)°, which is distinctively larger than that of 1,8-bis(4-chlorobenzoyl)-2,7-dimethoxynaphthalene [7.99 (8)°]. The dihedral angles between the naphthalene ring [C1–C10] plane and the planes of two benzene rings [C12–C17] and [C19–C24] are 66.88 (7)° and 88.12 (6)°, respectively. The difference between two dihedral angles is larger than that of the analogous compound, which has the corresponding angles of 71.98 (7)° and 71.55 (7)°.
The molecules are packed in the crystal lattice apparently stabilized by C—H···O interactions inovolving C16, C21 and O1 [2.54 Å, 158° and 2.68 Å, 161°](Fig. 2 and Table 1).