organic compounds
2,7-Dimethoxy-1,8-bis(4-phenoxybenzoyl)naphthalene
aDepartment of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture & Technology, Koganei, Tokyo 184-8588, Japan
*Correspondence e-mail: yonezawa@cc.tuat.ac.jp
In the title molecule {systematic name: [2,7-dimethoxy-8-(4-phenoxybenzoyl)naphthalen-1-yl](4-phenoxyphenyl)methanone}, C38H28O6, the 4-phenoxybenzoyl units adopt a syn orientation with respect to the naphthalene ring system. The internal benzene rings, A and B, make dihedral angles of 86.72 (5) and 79.22 (5)° with the naphthalene ring system. The two terminal benzene rings, C and D, of the 4-phenoxybenzoyl groups are twisted with respect to benzene rings A and B, with dihedral angles of A/C = 62.72 (8) and B/D = 87.61 (6)°. In the crystal, H atoms in the naphthalene system make two types of intermolecular C—H⋯O interactions with the carbonyl O atom and the phenyl etheral O atom of neighbouring molecules. Molecules are further linked by C—H⋯π interactions involving a H atom of terminal benzene ring D and the π-system of the internal benzene ring A, forming dimers centered about an inversion center.
Related literature
For the syntheses of aroylated naphthalene compounds via electrophilic aromatic substitution of naphthalene derivatives, see: Okamoto & Yonezawa (2009). For the structures of closely related compounds, see: Nakaema et al. (2007, 2008); Mitsui et al. (2010); Muto et al. (2010); Watanabe et al. (2010a,b).
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: ORTEPIII (Burnett & Johnson, 1996); software used to prepare material for publication: SHELXL97.
Supporting information
https://doi.org/10.1107/S1600536810042170/su2217sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536810042170/su2217Isup2.hkl
In a 10 ml one-necked flask equipped with a condenser, (2,7-dimethoxynaphthalene-1,8-diyl)bis(4-fluorophenyl)dimethanone (1.0 mmol, 432.4 mg), phenol (4.0 mmol, 376.4 mg), potassium carbonate (8.0 mmol, 1.10 g) and freshly distilled DMAc (2.0 ml) were stirred at 423 K for 6 h. This mixture was then added dropwise into methanol (20 ml) resulting in the formation of a pale yellow precipitate. The crude material was purified by δ (300 MHz, CDCl3): 3.72 (6H, s), 6.82–6.94 (4H, m), 7.09 (4H, d, J=7.5 Hz), 7.14–7.21 (4H, m), 7.36 (4H, t, J=8.4 Hz), 7.55–7.78 (4H,m), 7.92 (2H, d, J=7.5 Hz) p.p.m.; 13CNMR δ (75 MHz, CDCl3): 56.442, 111.128, 116.575, 120.274, 121.440, 124.345, 125.415, 129.467, 129.850, 131.360, 131.876, 133.424, 155.405, 155.998, 161.474, 195.057 p.p.m.; IR (KBr): 1673 (C=O), 1267 (Ar—O—Me) cm-1; HRMS (m/z): [M + H]+ calcd for C38H29O6, 581.1964 found, 581.82.
(silica gel, hexane: AcOEt= 2:1) to give the title compound (yield 104 mg, 18%). The isolated product was recrystallized from acetone to give block-like yellow single-crystals of the title compound. M.p. 441.6–444.4 K; 1HNMRAll H atoms were found in a difference Fourier map and were subsequently refined as riding atoms: C—H = 0.95 (aromatic) and 0.98 (methyl) Å, with Uiso(H) = 1.2 Ueq(C).
In the course of our studies on selective electrophilic aromatic aroylation of 2,7-dimethoxynaphthalene, peri-aroylnaphthalene compounds have proved to be formed regioselectively by the aid of a suitable acidic mediator (Okamoto & Yonezawa, 2009). Recently, we reported on the crystal structures of three such compounds, 1,8-dibenzoyl-2,7-dimethoxynaphthalene (Nakaema et al., 2008), bis(4-bromophenyl)(2,7-dimethoxynaphthalene-1,8-diyl)dimethanone (Watanabe et al., 2010a), and 1,8-bis(4-methylbenzoyl)-2,7-dimethoxynaphthalene (Muto et al., 2010). The aroyl groups at the 1,8-positions of the naphthalene rings in these compounds are twisted almost perpendicularly but a little tilted toward the exo sides against the naphthalene ring. In addition, 1,8-bis(4-chlorobenzoyl)-7-methoxynaphthalen-2-ol ethanol monosolvate (Mitsui et al., 2010), which was formed by selective demethylation at the 2-methoxy group of 1,8-bis(4-chlorobenzoyl)-2,7-dimethoxynaphthalene (Nakaema et al., 2007), solely has two syn-oriented chlorobenzoyl groups bonding to the naphthalene ring system, and in this molecule the 2-hydroxy group forms intramolecular hydrogen bonds with the carbonyl oxygen atom. As a part of our continuous studies on the molecular structures of this kind of homologous molecules, the
of the title compound, 1,8-bis(4-phenoxybenzoyl)-2,7-dimethoxynaphthalene, synthesized via nucleophilic aromatic substitution of (2,7-dimethoxynaphthalene-1,8-diyl)bis(4-fluorophenyl)dimethanone (Watanabe et al., 2010b), is reported herein.In the title molecule, illustrated in Fig. 1, two intervenient benzene rings, A (C12–C17) and B (C25–C30), are in a syn orientation with respect to the naphthalene ring system (C1–C10), and make dihedral angles of 86.72 (5) and 79.22 (5)°, respectively, with the naphthalene ring system. Furthermore, the dihedral angles between benzene rings A and B and the terminal benzene rings C (C18–C23) and D (C31–C36)] are A/C = 62.72 (8), B/D = 87.61 (6)°. Benzene rings A and B are configurated almost parallel to one another, the dihedral angle A/B being only 12.20 (6)°. On the other hand, benzene rings C and D are far from being parallel to one another with a dihedral angle C/D of 64.10 (8)°.
In the crystal, hydrogen atoms in the naphthalene ring form two types of intermolecular C—H···O interactions with the carbonyl oxygen atom (C3—H3···O2i = 2.44 Å; see Fig. 2 and Table 1) and the phenyl ethereal oxygen atom (C6—H6···O6ii = 2.56 Å; see Fig. 2 and Table 1). Moreover, molecules are linked by C—H···π interactions forming dimeric pairs. The terminal benzene ring D acts as a hydrogen-bond donor and the π system of the intervenient benzene ring A (with centroid Cg3) of an adjacent molecule acts as an acceptor (C35—H35···Cg3iii = 2.78 Å; see Fig. 3 and Table 1).
For the syntheses of aroylated naphthalene compounds via electrophilic aromatic substitution of naphthalene derivatives, see: Okamoto & Yonezawa (2009). For the structures of closely related compounds, see: Nakaema et al. (2007, 2008); Mitsui et al. (2010); Muto et al. (2010); Watanabe et al. (2010a,b).
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: ORTEPIII (Burnett & Johnson, 1996); software used to prepare material for publication: SHELXL97 (Sheldrick, 2008).C38H28O6 | F(000) = 1216 |
Mr = 580.60 | Dx = 1.292 Mg m−3 |
Monoclinic, P21/n | Cu Kα radiation, λ = 1.54187 Å |
Hall symbol: -P 2yn | Cell parameters from 37382 reflections |
a = 12.0733 (4) Å | θ = 3.5–68.3° |
b = 12.4806 (4) Å | µ = 0.71 mm−1 |
c = 19.8094 (6) Å | T = 193 K |
β = 91.115 (2)° | Block, yellow |
V = 2984.36 (15) Å3 | 0.50 × 0.30 × 0.30 mm |
Z = 4 |
Rigaku R-AXIS RAPID diffractometer | 5458 independent reflections |
Radiation source: rotating anode | 4862 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.038 |
Detector resolution: 10.00 pixels mm-1 | θmax = 68.3°, θmin = 4.2° |
ω scans | h = −14→14 |
Absorption correction: numerical (NUMABS; Higashi, 1999) | k = −15→15 |
Tmin = 0.720, Tmax = 0.816 | l = −23→23 |
54106 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)] = 0.036 | H-atom parameters constrained |
wR(F2) = 0.099 | w = 1/[σ2(Fo2) + (0.0496P)2 + 0.5589P] where P = (Fo2 + 2Fc2)/3 |
S = 1.04 | (Δ/σ)max = 0.001 |
5458 reflections | Δρmax = 0.16 e Å−3 |
400 parameters | Δρmin = −0.13 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: 0.00337 (19) |
C38H28O6 | V = 2984.36 (15) Å3 |
Mr = 580.60 | Z = 4 |
Monoclinic, P21/n | Cu Kα radiation |
a = 12.0733 (4) Å | µ = 0.71 mm−1 |
b = 12.4806 (4) Å | T = 193 K |
c = 19.8094 (6) Å | 0.50 × 0.30 × 0.30 mm |
β = 91.115 (2)° |
Rigaku R-AXIS RAPID diffractometer | 5458 independent reflections |
Absorption correction: numerical (NUMABS; Higashi, 1999) | 4862 reflections with I > 2σ(I) |
Tmin = 0.720, Tmax = 0.816 | Rint = 0.038 |
54106 measured reflections |
R[F2 > 2σ(F2)] = 0.036 | 0 restraints |
wR(F2) = 0.099 | H-atom parameters constrained |
S = 1.04 | Δρmax = 0.16 e Å−3 |
5458 reflections | Δρmin = −0.13 e Å−3 |
400 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 | ||
O1 | 0.96053 (8) | 0.06684 (7) | 0.81736 (5) | 0.0546 (2) | |
O2 | 0.77701 (9) | −0.00287 (7) | 0.90988 (5) | 0.0586 (3) | |
O3 | 0.97983 (8) | 0.27793 (8) | 0.73618 (5) | 0.0584 (3) | |
O4 | 0.51924 (8) | 0.06935 (9) | 0.91941 (5) | 0.0615 (3) | |
O5 | 1.08799 (8) | 0.36651 (9) | 1.06682 (5) | 0.0620 (3) | |
O6 | 0.79851 (8) | 0.28865 (8) | 1.16825 (4) | 0.0556 (3) | |
C1 | 0.83140 (10) | 0.20657 (9) | 0.79447 (6) | 0.0406 (3) | |
C2 | 0.86712 (11) | 0.27048 (10) | 0.74219 (6) | 0.0471 (3) | |
C3 | 0.79253 (12) | 0.32401 (11) | 0.69846 (7) | 0.0522 (3) | |
H3 | 0.8189 | 0.3692 | 0.6637 | 0.063* | |
C4 | 0.68212 (12) | 0.30989 (11) | 0.70687 (6) | 0.0510 (3) | |
H4 | 0.6314 | 0.3447 | 0.6769 | 0.061* | |
C5 | 0.64066 (10) | 0.24509 (10) | 0.75887 (6) | 0.0447 (3) | |
C6 | 0.52610 (11) | 0.22967 (12) | 0.76518 (7) | 0.0542 (3) | |
H6 | 0.4772 | 0.2613 | 0.7328 | 0.065* | |
C7 | 0.48293 (11) | 0.17099 (13) | 0.81612 (7) | 0.0579 (4) | |
H7 | 0.4053 | 0.1600 | 0.8186 | 0.069* | |
C8 | 0.55556 (11) | 0.12678 (11) | 0.86504 (7) | 0.0493 (3) | |
C9 | 0.66870 (10) | 0.13650 (9) | 0.86044 (6) | 0.0408 (3) | |
C10 | 0.71611 (10) | 0.19418 (9) | 0.80557 (6) | 0.0394 (3) | |
C11 | 0.92353 (10) | 0.15289 (9) | 0.83493 (6) | 0.0405 (3) | |
C12 | 0.96973 (9) | 0.21139 (9) | 0.89451 (6) | 0.0388 (3) | |
C13 | 0.92476 (9) | 0.30783 (9) | 0.91570 (6) | 0.0407 (3) | |
H13 | 0.8647 | 0.3388 | 0.8909 | 0.049* | |
C14 | 0.96670 (10) | 0.35918 (10) | 0.97258 (6) | 0.0446 (3) | |
H14 | 0.9354 | 0.4250 | 0.9870 | 0.054* | |
C15 | 1.05418 (10) | 0.31414 (11) | 1.00819 (6) | 0.0478 (3) | |
C16 | 1.10038 (11) | 0.21766 (11) | 0.98832 (7) | 0.0535 (3) | |
H16 | 1.1600 | 0.1867 | 1.0135 | 0.064* | |
C17 | 1.05836 (11) | 0.16749 (10) | 0.93132 (7) | 0.0477 (3) | |
H17 | 1.0903 | 0.1020 | 0.9169 | 0.057* | |
C18 | 1.19700 (12) | 0.39961 (11) | 1.07515 (7) | 0.0522 (3) | |
C19 | 1.27352 (14) | 0.39668 (15) | 1.02490 (8) | 0.0715 (4) | |
H19 | 1.2535 | 0.3709 | 0.9812 | 0.086* | |
C20 | 1.38027 (17) | 0.4318 (2) | 1.03878 (11) | 0.0967 (7) | |
H20 | 1.4343 | 0.4283 | 1.0046 | 0.116* | |
C21 | 1.40910 (18) | 0.47185 (18) | 1.10142 (11) | 0.0946 (6) | |
H21 | 1.4825 | 0.4962 | 1.1105 | 0.113* | |
C22 | 1.33065 (17) | 0.47633 (14) | 1.15093 (9) | 0.0758 (5) | |
H22 | 1.3501 | 0.5042 | 1.1942 | 0.091* | |
C23 | 1.22396 (14) | 0.44059 (11) | 1.13820 (7) | 0.0602 (4) | |
H23 | 1.1699 | 0.4441 | 1.1723 | 0.072* | |
C24 | 0.73586 (10) | 0.08501 (9) | 0.91703 (6) | 0.0412 (3) | |
C25 | 0.74864 (9) | 0.14370 (9) | 0.98181 (6) | 0.0388 (3) | |
C26 | 0.69332 (10) | 0.23842 (10) | 0.99588 (6) | 0.0423 (3) | |
H26 | 0.6442 | 0.2685 | 0.9629 | 0.051* | |
C27 | 0.70890 (10) | 0.28958 (11) | 1.05731 (6) | 0.0458 (3) | |
H27 | 0.6706 | 0.3542 | 1.0667 | 0.055* | |
C28 | 0.78094 (10) | 0.24554 (10) | 1.10496 (6) | 0.0441 (3) | |
C29 | 0.83819 (11) | 0.15178 (10) | 1.09148 (6) | 0.0487 (3) | |
H29 | 0.8880 | 0.1224 | 1.1242 | 0.058* | |
C30 | 0.82200 (11) | 0.10197 (10) | 1.03023 (6) | 0.0461 (3) | |
H30 | 0.8614 | 0.0380 | 1.0207 | 0.055* | |
C31 | 0.77444 (11) | 0.39731 (11) | 1.17747 (6) | 0.0477 (3) | |
C32 | 0.68244 (12) | 0.42435 (12) | 1.21339 (7) | 0.0569 (4) | |
H32 | 0.6344 | 0.3705 | 1.2300 | 0.068* | |
C33 | 0.66113 (13) | 0.53178 (13) | 1.22497 (8) | 0.0651 (4) | |
H33 | 0.5974 | 0.5521 | 1.2493 | 0.078* | |
C34 | 0.73172 (13) | 0.60918 (13) | 1.20139 (8) | 0.0637 (4) | |
H34 | 0.7169 | 0.6827 | 1.2097 | 0.076* | |
C35 | 0.82377 (13) | 0.58022 (13) | 1.16573 (8) | 0.0625 (4) | |
H35 | 0.8722 | 0.6339 | 1.1494 | 0.075* | |
C36 | 0.84602 (12) | 0.47327 (12) | 1.15348 (7) | 0.0561 (3) | |
H36 | 0.9095 | 0.4528 | 1.1290 | 0.067* | |
C37 | 1.02198 (14) | 0.34475 (15) | 0.68454 (9) | 0.0741 (5) | |
H37A | 1.1031 | 0.3439 | 0.6867 | 0.089* | |
H37B | 0.9955 | 0.4182 | 0.6909 | 0.089* | |
H37C | 0.9964 | 0.3182 | 0.6404 | 0.089* | |
C38 | 0.40630 (15) | 0.0786 (2) | 0.93694 (12) | 0.1008 (7) | |
H38A | 0.3948 | 0.0437 | 0.9806 | 0.121* | |
H38B | 0.3598 | 0.0439 | 0.9023 | 0.121* | |
H38C | 0.3863 | 0.1545 | 0.9401 | 0.121* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0598 (6) | 0.0431 (5) | 0.0604 (6) | 0.0113 (4) | −0.0108 (4) | −0.0065 (4) |
O2 | 0.0817 (7) | 0.0420 (5) | 0.0514 (5) | 0.0130 (5) | −0.0147 (5) | −0.0058 (4) |
O3 | 0.0499 (5) | 0.0617 (6) | 0.0636 (6) | 0.0012 (4) | 0.0039 (4) | 0.0206 (5) |
O4 | 0.0488 (5) | 0.0698 (7) | 0.0658 (6) | −0.0101 (5) | 0.0012 (4) | 0.0149 (5) |
O5 | 0.0549 (6) | 0.0761 (7) | 0.0546 (6) | −0.0006 (5) | −0.0087 (4) | −0.0167 (5) |
O6 | 0.0719 (6) | 0.0533 (6) | 0.0411 (5) | 0.0076 (5) | −0.0123 (4) | −0.0064 (4) |
C1 | 0.0459 (6) | 0.0357 (6) | 0.0399 (6) | 0.0017 (5) | −0.0052 (5) | 0.0007 (5) |
C2 | 0.0492 (7) | 0.0438 (7) | 0.0481 (7) | 0.0032 (5) | −0.0007 (5) | 0.0045 (5) |
C3 | 0.0610 (8) | 0.0491 (8) | 0.0462 (7) | 0.0042 (6) | −0.0033 (6) | 0.0116 (6) |
C4 | 0.0593 (8) | 0.0491 (7) | 0.0440 (7) | 0.0091 (6) | −0.0120 (6) | 0.0050 (6) |
C5 | 0.0491 (7) | 0.0430 (7) | 0.0414 (6) | 0.0049 (5) | −0.0106 (5) | −0.0018 (5) |
C6 | 0.0494 (7) | 0.0581 (8) | 0.0545 (8) | 0.0052 (6) | −0.0163 (6) | 0.0021 (6) |
C7 | 0.0407 (7) | 0.0666 (9) | 0.0660 (9) | −0.0031 (6) | −0.0106 (6) | 0.0031 (7) |
C8 | 0.0481 (7) | 0.0477 (7) | 0.0519 (7) | −0.0055 (6) | −0.0038 (6) | 0.0015 (6) |
C9 | 0.0445 (6) | 0.0374 (6) | 0.0400 (6) | −0.0013 (5) | −0.0073 (5) | −0.0025 (5) |
C10 | 0.0452 (6) | 0.0351 (6) | 0.0377 (6) | 0.0013 (5) | −0.0081 (5) | −0.0038 (5) |
C11 | 0.0411 (6) | 0.0356 (6) | 0.0448 (6) | 0.0009 (5) | −0.0015 (5) | 0.0042 (5) |
C12 | 0.0381 (6) | 0.0349 (6) | 0.0433 (6) | −0.0012 (5) | −0.0016 (5) | 0.0054 (5) |
C13 | 0.0369 (6) | 0.0359 (6) | 0.0492 (7) | −0.0001 (5) | −0.0035 (5) | 0.0058 (5) |
C14 | 0.0423 (6) | 0.0381 (6) | 0.0535 (7) | −0.0013 (5) | 0.0008 (5) | −0.0017 (5) |
C15 | 0.0455 (7) | 0.0513 (7) | 0.0465 (7) | −0.0035 (6) | −0.0041 (5) | −0.0029 (6) |
C16 | 0.0509 (7) | 0.0552 (8) | 0.0537 (8) | 0.0085 (6) | −0.0150 (6) | 0.0020 (6) |
C17 | 0.0497 (7) | 0.0411 (7) | 0.0521 (7) | 0.0088 (5) | −0.0073 (6) | 0.0027 (5) |
C18 | 0.0560 (8) | 0.0464 (7) | 0.0534 (7) | 0.0011 (6) | −0.0158 (6) | 0.0014 (6) |
C19 | 0.0657 (10) | 0.0865 (12) | 0.0619 (9) | −0.0152 (8) | −0.0117 (7) | −0.0112 (8) |
C20 | 0.0701 (11) | 0.1271 (18) | 0.0927 (14) | −0.0304 (12) | −0.0038 (10) | −0.0231 (13) |
C21 | 0.0769 (12) | 0.1078 (16) | 0.0979 (15) | −0.0283 (11) | −0.0281 (11) | −0.0112 (12) |
C22 | 0.0966 (13) | 0.0629 (10) | 0.0665 (10) | −0.0146 (9) | −0.0363 (10) | −0.0002 (8) |
C23 | 0.0814 (10) | 0.0475 (8) | 0.0508 (8) | −0.0021 (7) | −0.0179 (7) | 0.0023 (6) |
C24 | 0.0459 (6) | 0.0358 (6) | 0.0418 (6) | −0.0033 (5) | −0.0029 (5) | 0.0021 (5) |
C25 | 0.0422 (6) | 0.0348 (6) | 0.0392 (6) | −0.0049 (5) | −0.0026 (5) | 0.0039 (5) |
C26 | 0.0403 (6) | 0.0453 (7) | 0.0411 (6) | 0.0026 (5) | −0.0060 (5) | 0.0010 (5) |
C27 | 0.0447 (6) | 0.0462 (7) | 0.0464 (7) | 0.0065 (5) | −0.0040 (5) | −0.0048 (5) |
C28 | 0.0478 (7) | 0.0461 (7) | 0.0382 (6) | −0.0042 (5) | −0.0034 (5) | −0.0021 (5) |
C29 | 0.0580 (8) | 0.0434 (7) | 0.0441 (7) | 0.0031 (6) | −0.0138 (6) | 0.0043 (5) |
C30 | 0.0567 (7) | 0.0348 (6) | 0.0463 (7) | 0.0020 (5) | −0.0076 (5) | 0.0034 (5) |
C31 | 0.0519 (7) | 0.0522 (8) | 0.0387 (6) | −0.0001 (6) | −0.0077 (5) | −0.0075 (5) |
C32 | 0.0554 (8) | 0.0596 (9) | 0.0558 (8) | −0.0123 (7) | 0.0045 (6) | −0.0102 (7) |
C33 | 0.0582 (8) | 0.0671 (10) | 0.0706 (10) | −0.0053 (7) | 0.0151 (7) | −0.0195 (8) |
C34 | 0.0663 (9) | 0.0533 (8) | 0.0719 (10) | −0.0056 (7) | 0.0077 (7) | −0.0161 (7) |
C35 | 0.0629 (9) | 0.0602 (9) | 0.0646 (9) | −0.0141 (7) | 0.0077 (7) | −0.0052 (7) |
C36 | 0.0517 (8) | 0.0661 (9) | 0.0506 (7) | −0.0023 (7) | 0.0063 (6) | −0.0075 (7) |
C37 | 0.0649 (9) | 0.0804 (11) | 0.0774 (11) | 0.0013 (8) | 0.0147 (8) | 0.0301 (9) |
C38 | 0.0584 (10) | 0.1314 (19) | 0.1134 (16) | −0.0008 (11) | 0.0215 (10) | 0.0495 (14) |
O1—C11 | 1.2167 (14) | C18—C23 | 1.3826 (19) |
O2—C24 | 1.2135 (15) | C19—C20 | 1.384 (2) |
O3—C2 | 1.3714 (16) | C19—H19 | 0.9500 |
O3—C37 | 1.4217 (17) | C20—C21 | 1.376 (3) |
O4—C8 | 1.3727 (16) | C20—H20 | 0.9500 |
O4—C38 | 1.418 (2) | C21—C22 | 1.378 (3) |
O5—C18 | 1.3863 (17) | C21—H21 | 0.9500 |
O5—C15 | 1.3871 (15) | C22—C23 | 1.382 (2) |
O6—C28 | 1.3771 (14) | C22—H22 | 0.9500 |
O6—C31 | 1.3996 (16) | C23—H23 | 0.9500 |
C1—C2 | 1.3829 (17) | C24—C25 | 1.4832 (16) |
C1—C10 | 1.4219 (17) | C25—C26 | 1.3887 (17) |
C1—C11 | 1.5145 (16) | C25—C30 | 1.3938 (16) |
C2—C3 | 1.4061 (18) | C26—C27 | 1.3839 (17) |
C3—C4 | 1.358 (2) | C26—H26 | 0.9500 |
C3—H3 | 0.9500 | C27—C28 | 1.3847 (17) |
C4—C5 | 1.4092 (19) | C27—H27 | 0.9500 |
C4—H4 | 0.9500 | C28—C29 | 1.3877 (18) |
C5—C6 | 1.4045 (19) | C29—C30 | 1.3738 (18) |
C5—C10 | 1.4339 (16) | C29—H29 | 0.9500 |
C6—C7 | 1.359 (2) | C30—H30 | 0.9500 |
C6—H6 | 0.9500 | C31—C32 | 1.3729 (19) |
C7—C8 | 1.4070 (19) | C31—C36 | 1.374 (2) |
C7—H7 | 0.9500 | C32—C33 | 1.385 (2) |
C8—C9 | 1.3761 (17) | C32—H32 | 0.9500 |
C9—C10 | 1.4323 (17) | C33—C34 | 1.376 (2) |
C9—C24 | 1.5139 (16) | C33—H33 | 0.9500 |
C11—C12 | 1.4871 (16) | C34—C35 | 1.377 (2) |
C12—C13 | 1.3887 (17) | C34—H34 | 0.9500 |
C12—C17 | 1.3952 (16) | C35—C36 | 1.384 (2) |
C13—C14 | 1.3838 (17) | C35—H35 | 0.9500 |
C13—H13 | 0.9500 | C36—H36 | 0.9500 |
C14—C15 | 1.3783 (18) | C37—H37A | 0.9800 |
C14—H14 | 0.9500 | C37—H37B | 0.9800 |
C15—C16 | 1.3873 (19) | C37—H37C | 0.9800 |
C16—C17 | 1.3792 (18) | C38—H38A | 0.9800 |
C16—H16 | 0.9500 | C38—H38B | 0.9800 |
C17—H17 | 0.9500 | C38—H38C | 0.9800 |
C18—C19 | 1.372 (2) | ||
C2—O3—C37 | 118.15 (11) | C21—C20—H20 | 119.6 |
C8—O4—C38 | 118.24 (12) | C19—C20—H20 | 119.6 |
C18—O5—C15 | 120.22 (11) | C20—C21—C22 | 119.42 (18) |
C28—O6—C31 | 117.95 (10) | C20—C21—H21 | 120.3 |
C2—C1—C10 | 119.93 (11) | C22—C21—H21 | 120.3 |
C2—C1—C11 | 114.52 (11) | C21—C22—C23 | 120.55 (16) |
C10—C1—C11 | 125.54 (10) | C21—C22—H22 | 119.7 |
O3—C2—C1 | 115.37 (11) | C23—C22—H22 | 119.7 |
O3—C2—C3 | 122.61 (12) | C22—C23—C18 | 119.11 (17) |
C1—C2—C3 | 122.01 (12) | C22—C23—H23 | 120.4 |
C4—C3—C2 | 118.77 (12) | C18—C23—H23 | 120.4 |
C4—C3—H3 | 120.6 | O2—C24—C25 | 120.76 (11) |
C2—C3—H3 | 120.6 | O2—C24—C9 | 120.79 (11) |
C3—C4—C5 | 121.84 (12) | C25—C24—C9 | 118.44 (10) |
C3—C4—H4 | 119.1 | C26—C25—C30 | 118.80 (11) |
C5—C4—H4 | 119.1 | C26—C25—C24 | 123.49 (10) |
C6—C5—C4 | 120.53 (11) | C30—C25—C24 | 117.70 (11) |
C6—C5—C10 | 119.75 (12) | C27—C26—C25 | 120.77 (11) |
C4—C5—C10 | 119.71 (12) | C27—C26—H26 | 119.6 |
C7—C6—C5 | 122.17 (12) | C25—C26—H26 | 119.6 |
C7—C6—H6 | 118.9 | C26—C27—C28 | 119.28 (12) |
C5—C6—H6 | 118.9 | C26—C27—H27 | 120.4 |
C6—C7—C8 | 118.68 (13) | C28—C27—H27 | 120.4 |
C6—C7—H7 | 120.7 | O6—C28—C27 | 123.30 (11) |
C8—C7—H7 | 120.7 | O6—C28—C29 | 115.86 (11) |
O4—C8—C9 | 115.52 (11) | C27—C28—C29 | 120.81 (11) |
O4—C8—C7 | 122.74 (12) | C30—C29—C28 | 119.26 (11) |
C9—C8—C7 | 121.73 (12) | C30—C29—H29 | 120.4 |
C8—C9—C10 | 120.43 (11) | C28—C29—H29 | 120.4 |
C8—C9—C24 | 115.57 (11) | C29—C30—C25 | 121.08 (12) |
C10—C9—C24 | 124.00 (10) | C29—C30—H30 | 119.5 |
C1—C10—C9 | 125.36 (10) | C25—C30—H30 | 119.5 |
C1—C10—C5 | 117.62 (11) | C32—C31—C36 | 122.03 (13) |
C9—C10—C5 | 117.00 (11) | C32—C31—O6 | 118.55 (13) |
O1—C11—C12 | 121.75 (11) | C36—C31—O6 | 119.34 (12) |
O1—C11—C1 | 120.60 (11) | C31—C32—C33 | 118.59 (14) |
C12—C11—C1 | 117.59 (10) | C31—C32—H32 | 120.7 |
C13—C12—C17 | 118.87 (11) | C33—C32—H32 | 120.7 |
C13—C12—C11 | 121.50 (10) | C34—C33—C32 | 120.34 (14) |
C17—C12—C11 | 119.60 (11) | C34—C33—H33 | 119.8 |
C14—C13—C12 | 120.57 (11) | C32—C33—H33 | 119.8 |
C14—C13—H13 | 119.7 | C35—C34—C33 | 120.08 (15) |
C12—C13—H13 | 119.7 | C35—C34—H34 | 120.0 |
C15—C14—C13 | 119.50 (12) | C33—C34—H34 | 120.0 |
C15—C14—H14 | 120.2 | C34—C35—C36 | 120.31 (14) |
C13—C14—H14 | 120.2 | C34—C35—H35 | 119.8 |
C14—C15—O5 | 116.51 (12) | C36—C35—H35 | 119.8 |
C14—C15—C16 | 121.14 (12) | C31—C36—C35 | 118.64 (13) |
O5—C15—C16 | 122.21 (12) | C31—C36—H36 | 120.7 |
C17—C16—C15 | 118.87 (12) | C35—C36—H36 | 120.7 |
C17—C16—H16 | 120.6 | O3—C37—H37A | 109.5 |
C15—C16—H16 | 120.6 | O3—C37—H37B | 109.5 |
C16—C17—C12 | 121.04 (12) | H37A—C37—H37B | 109.5 |
C16—C17—H17 | 119.5 | O3—C37—H37C | 109.5 |
C12—C17—H17 | 119.5 | H37A—C37—H37C | 109.5 |
C19—C18—C23 | 121.03 (14) | H37B—C37—H37C | 109.5 |
C19—C18—O5 | 123.84 (12) | O4—C38—H38A | 109.5 |
C23—C18—O5 | 115.09 (13) | O4—C38—H38B | 109.5 |
C18—C19—C20 | 119.02 (16) | H38A—C38—H38B | 109.5 |
C18—C19—H19 | 120.5 | O4—C38—H38C | 109.5 |
C20—C19—H19 | 120.5 | H38A—C38—H38C | 109.5 |
C21—C20—C19 | 120.8 (2) | H38B—C38—H38C | 109.5 |
C37—O3—C2—C1 | −178.33 (13) | C18—O5—C15—C14 | −123.87 (13) |
C37—O3—C2—C3 | 1.6 (2) | C18—O5—C15—C16 | 60.33 (18) |
C10—C1—C2—O3 | 179.42 (11) | C14—C15—C16—C17 | 0.9 (2) |
C11—C1—C2—O3 | −1.79 (16) | O5—C15—C16—C17 | 176.54 (12) |
C10—C1—C2—C3 | −0.50 (19) | C15—C16—C17—C12 | −1.0 (2) |
C11—C1—C2—C3 | 178.30 (12) | C13—C12—C17—C16 | 0.78 (19) |
O3—C2—C3—C4 | 178.22 (12) | C11—C12—C17—C16 | −177.51 (12) |
C1—C2—C3—C4 | −1.9 (2) | C15—O5—C18—C19 | 8.8 (2) |
C2—C3—C4—C5 | 1.3 (2) | C15—O5—C18—C23 | −173.45 (12) |
C3—C4—C5—C6 | −178.26 (13) | C23—C18—C19—C20 | 2.4 (3) |
C3—C4—C5—C10 | 1.5 (2) | O5—C18—C19—C20 | 179.97 (17) |
C4—C5—C6—C7 | −177.53 (14) | C18—C19—C20—C21 | −1.7 (3) |
C10—C5—C6—C7 | 2.7 (2) | C19—C20—C21—C22 | 0.3 (4) |
C5—C6—C7—C8 | 1.7 (2) | C20—C21—C22—C23 | 0.3 (3) |
C38—O4—C8—C9 | 164.34 (16) | C21—C22—C23—C18 | 0.4 (3) |
C38—O4—C8—C7 | −17.1 (2) | C19—C18—C23—C22 | −1.7 (2) |
C6—C7—C8—O4 | 177.86 (13) | O5—C18—C23—C22 | −179.52 (13) |
C6—C7—C8—C9 | −3.7 (2) | C8—C9—C24—O2 | 98.63 (15) |
O4—C8—C9—C10 | 179.63 (11) | C10—C9—C24—O2 | −82.66 (16) |
C7—C8—C9—C10 | 1.0 (2) | C8—C9—C24—C25 | −80.37 (14) |
O4—C8—C9—C24 | −1.60 (17) | C10—C9—C24—C25 | 98.34 (14) |
C7—C8—C9—C24 | 179.81 (12) | O2—C24—C25—C26 | −172.30 (12) |
C2—C1—C10—C9 | −175.50 (12) | C9—C24—C25—C26 | 6.70 (17) |
C11—C1—C10—C9 | 5.84 (19) | O2—C24—C25—C30 | 9.04 (18) |
C2—C1—C10—C5 | 3.26 (17) | C9—C24—C25—C30 | −171.96 (11) |
C11—C1—C10—C5 | −175.39 (11) | C30—C25—C26—C27 | −1.23 (18) |
C8—C9—C10—C1 | −177.92 (12) | C24—C25—C26—C27 | −179.88 (11) |
C24—C9—C10—C1 | 3.42 (19) | C25—C26—C27—C28 | 0.25 (19) |
C8—C9—C10—C5 | 3.31 (17) | C31—O6—C28—C27 | −22.47 (18) |
C24—C9—C10—C5 | −175.35 (11) | C31—O6—C28—C29 | 159.22 (12) |
C6—C5—C10—C1 | 176.01 (11) | C26—C27—C28—O6 | −177.55 (11) |
C4—C5—C10—C1 | −3.76 (17) | C26—C27—C28—C29 | 0.68 (19) |
C6—C5—C10—C9 | −5.12 (17) | O6—C28—C29—C30 | 177.76 (12) |
C4—C5—C10—C9 | 175.10 (11) | C27—C28—C29—C30 | −0.6 (2) |
C2—C1—C11—O1 | −87.22 (15) | C28—C29—C30—C25 | −0.4 (2) |
C10—C1—C11—O1 | 91.50 (16) | C26—C25—C30—C29 | 1.33 (19) |
C2—C1—C11—C12 | 90.10 (13) | C24—C25—C30—C29 | −179.95 (12) |
C10—C1—C11—C12 | −91.18 (14) | C28—O6—C31—C32 | 107.42 (14) |
O1—C11—C12—C13 | −177.79 (11) | C28—O6—C31—C36 | −75.86 (15) |
C1—C11—C12—C13 | 4.92 (16) | C36—C31—C32—C33 | 0.7 (2) |
O1—C11—C12—C17 | 0.44 (18) | O6—C31—C32—C33 | 177.33 (13) |
C1—C11—C12—C17 | −176.85 (11) | C31—C32—C33—C34 | −0.7 (2) |
C17—C12—C13—C14 | −0.39 (18) | C32—C33—C34—C35 | 0.4 (3) |
C11—C12—C13—C14 | 177.86 (11) | C33—C34—C35—C36 | −0.1 (2) |
C12—C13—C14—C15 | 0.28 (18) | C32—C31—C36—C35 | −0.4 (2) |
C13—C14—C15—O5 | −176.41 (11) | O6—C31—C36—C35 | −177.04 (12) |
C13—C14—C15—C16 | −0.6 (2) | C34—C35—C36—C31 | 0.1 (2) |
Cg3 is the centroid of ring A (C12–C17). |
D—H···A | D—H | H···A | D···A | D—H···A |
C3—H3···O2i | 0.95 | 2.44 | 3.1479 (17) | 131 |
C6—H6···O6ii | 0.95 | 2.56 | 3.3293 (16) | 138 |
C35—H35···Cg3iii | 0.95 | 2.78 | 3.6528 (17) | 153 |
Symmetry codes: (i) −x+3/2, y+1/2, −z+3/2; (ii) x−1/2, −y+1/2, z−1/2; (iii) −x+2, −y+1, −z+2. |
Experimental details
Crystal data | |
Chemical formula | C38H28O6 |
Mr | 580.60 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 193 |
a, b, c (Å) | 12.0733 (4), 12.4806 (4), 19.8094 (6) |
β (°) | 91.115 (2) |
V (Å3) | 2984.36 (15) |
Z | 4 |
Radiation type | Cu Kα |
µ (mm−1) | 0.71 |
Crystal size (mm) | 0.50 × 0.30 × 0.30 |
Data collection | |
Diffractometer | Rigaku R-AXIS RAPID |
Absorption correction | Numerical (NUMABS; Higashi, 1999) |
Tmin, Tmax | 0.720, 0.816 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 54106, 5458, 4862 |
Rint | 0.038 |
(sin θ/λ)max (Å−1) | 0.602 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.036, 0.099, 1.04 |
No. of reflections | 5458 |
No. of parameters | 400 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.16, −0.13 |
Computer programs: PROCESS-AUTO (Rigaku, 1998), CrystalStructure (Rigaku/MSC, 2004), SIR2004 (Burla et al., 2005), SHELXL97 (Sheldrick, 2008), ORTEPIII (Burnett & Johnson, 1996).
Cg3 is the centroid of ring A (C12–C17). |
D—H···A | D—H | H···A | D···A | D—H···A |
C3—H3···O2i | 0.95 | 2.44 | 3.1479 (17) | 131 |
C6—H6···O6ii | 0.95 | 2.56 | 3.3293 (16) | 138 |
C35—H35···Cg3iii | 0.95 | 2.78 | 3.6528 (17) | 153 |
Symmetry codes: (i) −x+3/2, y+1/2, −z+3/2; (ii) x−1/2, −y+1/2, z−1/2; (iii) −x+2, −y+1, −z+2. |
Acknowledgements
The authors express their gratitude to Professor Keiichi Noguchi, Instrumentation Analysis Center, Tokyo University of Agriculture & Technology, for his technical advice. This work was partially supported by the Ogasawara Foundation for the Promotion of Science & Engineering, Tokyo, Japan.
References
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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 studies on selective electrophilic aromatic aroylation of 2,7-dimethoxynaphthalene, peri-aroylnaphthalene compounds have proved to be formed regioselectively by the aid of a suitable acidic mediator (Okamoto & Yonezawa, 2009). Recently, we reported on the crystal structures of three such compounds, 1,8-dibenzoyl-2,7-dimethoxynaphthalene (Nakaema et al., 2008), bis(4-bromophenyl)(2,7-dimethoxynaphthalene-1,8-diyl)dimethanone (Watanabe et al., 2010a), and 1,8-bis(4-methylbenzoyl)-2,7-dimethoxynaphthalene (Muto et al., 2010). The aroyl groups at the 1,8-positions of the naphthalene rings in these compounds are twisted almost perpendicularly but a little tilted toward the exo sides against the naphthalene ring. In addition, 1,8-bis(4-chlorobenzoyl)-7-methoxynaphthalen-2-ol ethanol monosolvate (Mitsui et al., 2010), which was formed by selective demethylation at the 2-methoxy group of 1,8-bis(4-chlorobenzoyl)-2,7-dimethoxynaphthalene (Nakaema et al., 2007), solely has two syn-oriented chlorobenzoyl groups bonding to the naphthalene ring system, and in this molecule the 2-hydroxy group forms intramolecular hydrogen bonds with the carbonyl oxygen atom. As a part of our continuous studies on the molecular structures of this kind of homologous molecules, the crystal structure of the title compound, 1,8-bis(4-phenoxybenzoyl)-2,7-dimethoxynaphthalene, synthesized via nucleophilic aromatic substitution of (2,7-dimethoxynaphthalene-1,8-diyl)bis(4-fluorophenyl)dimethanone (Watanabe et al., 2010b), is reported herein.
In the title molecule, illustrated in Fig. 1, two intervenient benzene rings, A (C12–C17) and B (C25–C30), are in a syn orientation with respect to the naphthalene ring system (C1–C10), and make dihedral angles of 86.72 (5) and 79.22 (5)°, respectively, with the naphthalene ring system. Furthermore, the dihedral angles between benzene rings A and B and the terminal benzene rings C (C18–C23) and D (C31–C36)] are A/C = 62.72 (8), B/D = 87.61 (6)°. Benzene rings A and B are configurated almost parallel to one another, the dihedral angle A/B being only 12.20 (6)°. On the other hand, benzene rings C and D are far from being parallel to one another with a dihedral angle C/D of 64.10 (8)°.
In the crystal, hydrogen atoms in the naphthalene ring form two types of intermolecular C—H···O interactions with the carbonyl oxygen atom (C3—H3···O2i = 2.44 Å; see Fig. 2 and Table 1) and the phenyl ethereal oxygen atom (C6—H6···O6ii = 2.56 Å; see Fig. 2 and Table 1). Moreover, molecules are linked by C—H···π interactions forming dimeric pairs. The terminal benzene ring D acts as a hydrogen-bond donor and the π system of the intervenient benzene ring A (with centroid Cg3) of an adjacent molecule acts as an acceptor (C35—H35···Cg3iii = 2.78 Å; see Fig. 3 and Table 1).