organic compounds
{2,7-Diethoxy-8-[(naphthalen-2-yl)carbonyl]naphthalen-1-yl}(naphthalen-2-yl)methanone
aDepartment of Organic and Polymer Materials Chemistry, Tokyo University of Agriculture & Technology, 2-24-16 Naka-machi, Koganei, Tokyo 184-8588, Japan
*Correspondence e-mail: aokamoto@cc.tuat.ac.jp
In the title compound, C36H28O4, the two 2-naphthoyl groups at the 1- and 8-positions of the central 2,7-diethoxynaphthalene ring system are aligned almost antiparallel and make a dihedral angle of 48.35 (5)°. The dihedral angles between the central 2,7-diethoxynaphthalene ring system and the terminal naphthalene ring systems are 77.64 (4) and 73.73 (4)°. In the crystal, molecules are linked into chains along the a-axis direction by dual C—H⋯O interactions between naphthoyl groups.
Related literature
For electrophilic aroylation of naphthalene derivatives, see: Okamoto & Yonezawa (2009); Okamoto et al. (2011). For the structures of closely related compounds, see: Nakaema et al. (2008); Tsumuki et al. (2011); Sasagawa et al. (2012); Isogai et al. (2013); Yoshiwaka et al. (2013).
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, 2010); 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
10.1107/S1600536813003577/rz5043sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813003577/rz5043Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813003577/rz5043Isup3.cml
To a solution of 2-naphthoyl chloride (14.3 g, 75.0 mmol) and TiCl4 (42.7 g, 225 mmol) in CH2Cl2 (62.5 ml), 2,7-diethoxynaphthalene (5.4 g, 25.3 mmol) was added. The reaction mixture was stirred at r. t. for 24 h, then poured into ice-cold water (200 ml). The aqueous layer was extracted with CHCl3 (60 ml × 3). The combined organic extracts were washed with 2M aqueous NaOH (80 ml × 3) followed by washing with brine (80 ml × 3). The organic layer was dried over anhydrous MgSO4. The solvent was removed under reduced pressure to give a cake (yield 97%). The crude product was purified by recrystallization from chloroform/methanol (1:2 v/v) solution (isolated yield 70%). Furthermore, the isolated product was crystallized from chloroform to give single crystals suitable for X-ray analysis.
1H NMR δ (500 MHz, CDCl3): 0.86 (6H, t, J = 6.9 Hz), 3.96 (4H, q, J = 6.9), 7.21 (2H, d, J = 9.0 Hz), 7.39 (2H, t, J = 7.5 Hz), 7.47 (2H, t, J = 7.5 Hz), 7.69–7.93 (8H, m), 7.98 (2H, d, J = 9.0 Hz), 8.15 (2H, s) p.p.m.; 13C NMR δ (125 MHz, CDCl3): 14.36, 64.93, 112.35, 122.03, 124.89, 125.56, 125.89, 127.47, 127.54, 127.70, 129.59, 130.44, 130.74, 132.08, 132.41, 135.43, 136.47, 155.97, 197.17 p.p.m.; IR (KBr): 1658, 1623, 1608, 1510, 1470, 1275 cm-1; HRMS (m/z): [M+H]+ calcd. for C36H29O4, 525.2066; found, 525.2031.
All the H atoms were located in a difference Fourier map and were subsequently refined as riding atoms: C—H = 0.95 (aromatic), 0.98 (methyl) and 0.99 (methylene) Å, with Uiso(H) = 1.2 Ueq(C).
Data collection: PROCESS-AUTO (Rigaku, 1998); cell
PROCESS-AUTO (Rigaku, 1998); data reduction: CrystalStructure (Rigaku, 2010); 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).C36H28O4 | F(000) = 1104 |
Mr = 524.58 | Dx = 1.299 Mg m−3 |
Monoclinic, P21/c | Melting point = 493.0–494.5 K |
Hall symbol: -P 2ybc | Cu Kα radiation, λ = 1.54187 Å |
a = 7.86946 (14) Å | Cell parameters from 33371 reflections |
b = 27.1458 (5) Å | θ = 3.3–68.2° |
c = 12.8490 (2) Å | µ = 0.67 mm−1 |
β = 102.267 (1)° | T = 193 K |
V = 2682.16 (8) Å3 | Block, colourless |
Z = 4 | 0.50 × 0.25 × 0.20 mm |
Rigaku R-AXIS RAPID diffractometer | 4914 independent reflections |
Radiation source: rotating anode | 3996 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.029 |
Detector resolution: 10.000 pixels mm-1 | θmax = 68.2°, θmin = 3.3° |
ω scans | h = −9→9 |
Absorption correction: numerical (NUMABS; Higashi, 1999) | k = −31→32 |
Tmin = 0.732, Tmax = 0.878 | l = −15→15 |
41696 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) = 0.097 | w = 1/[σ2(Fo2) + (0.0448P)2 + 0.4544P] where P = (Fo2 + 2Fc2)/3 |
S = 1.09 | (Δ/σ)max = 0.001 |
4914 reflections | Δρmax = 0.20 e Å−3 |
364 parameters | Δρmin = −0.15 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: 0.00121 (13) |
C36H28O4 | V = 2682.16 (8) Å3 |
Mr = 524.58 | Z = 4 |
Monoclinic, P21/c | Cu Kα radiation |
a = 7.86946 (14) Å | µ = 0.67 mm−1 |
b = 27.1458 (5) Å | T = 193 K |
c = 12.8490 (2) Å | 0.50 × 0.25 × 0.20 mm |
β = 102.267 (1)° |
Rigaku R-AXIS RAPID diffractometer | 4914 independent reflections |
Absorption correction: numerical (NUMABS; Higashi, 1999) | 3996 reflections with I > 2σ(I) |
Tmin = 0.732, Tmax = 0.878 | Rint = 0.029 |
41696 measured reflections |
R[F2 > 2σ(F2)] = 0.036 | 0 restraints |
wR(F2) = 0.097 | H-atom parameters constrained |
S = 1.09 | Δρmax = 0.20 e Å−3 |
4914 reflections | Δρmin = −0.15 e Å−3 |
364 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 | 0.07897 (13) | 0.25900 (3) | 0.51894 (8) | 0.0457 (3) | |
O2 | 0.55755 (13) | 0.32784 (3) | 1.03877 (7) | 0.0436 (2) | |
O3 | 0.39273 (11) | 0.34984 (3) | 0.63817 (7) | 0.0400 (2) | |
O4 | 0.21986 (11) | 0.37405 (3) | 0.83968 (8) | 0.0431 (2) | |
C1 | 0.24047 (16) | 0.28182 (5) | 0.68544 (10) | 0.0338 (3) | |
C2 | 0.16047 (17) | 0.24468 (5) | 0.61849 (10) | 0.0365 (3) | |
C3 | 0.17099 (18) | 0.19490 (5) | 0.65104 (11) | 0.0403 (3) | |
H3 | 0.1137 | 0.1700 | 0.6047 | 0.048* | |
C4 | 0.26404 (18) | 0.18312 (5) | 0.74950 (11) | 0.0400 (3) | |
H4 | 0.2736 | 0.1495 | 0.7705 | 0.048* | |
C5 | 0.44227 (18) | 0.20619 (5) | 0.92342 (11) | 0.0402 (3) | |
H5 | 0.4541 | 0.1723 | 0.9422 | 0.048* | |
C6 | 0.51793 (18) | 0.24052 (5) | 0.99566 (11) | 0.0401 (3) | |
H6 | 0.5833 | 0.2308 | 1.0634 | 0.048* | |
C7 | 0.49772 (17) | 0.29080 (5) | 0.96834 (10) | 0.0360 (3) | |
C8 | 0.40829 (16) | 0.30593 (5) | 0.86876 (10) | 0.0334 (3) | |
C9 | 0.33228 (16) | 0.26999 (5) | 0.79099 (10) | 0.0334 (3) | |
C10 | 0.34690 (16) | 0.21927 (5) | 0.82158 (10) | 0.0358 (3) | |
C11 | 0.24972 (17) | 0.33218 (5) | 0.63750 (10) | 0.0339 (3) | |
C12 | 0.37086 (16) | 0.36012 (5) | 0.85329 (10) | 0.0336 (3) | |
C13 | 0.08776 (17) | 0.35910 (5) | 0.58868 (10) | 0.0357 (3) | |
C14 | 0.09312 (19) | 0.39523 (5) | 0.51522 (11) | 0.0410 (3) | |
H14 | 0.1997 | 0.4019 | 0.4944 | 0.049* | |
C15 | −0.0564 (2) | 0.42290 (5) | 0.46955 (11) | 0.0443 (3) | |
C16 | −0.0535 (2) | 0.46069 (6) | 0.39398 (13) | 0.0585 (4) | |
H16 | 0.0507 | 0.4672 | 0.3703 | 0.070* | |
C17 | −0.1985 (3) | 0.48786 (7) | 0.35494 (14) | 0.0710 (5) | |
H17 | −0.1945 | 0.5133 | 0.3047 | 0.085* | |
C18 | −0.3539 (3) | 0.47841 (7) | 0.38869 (14) | 0.0735 (6) | |
H18 | −0.4544 | 0.4975 | 0.3608 | 0.088* | |
C19 | −0.3623 (2) | 0.44224 (7) | 0.46071 (13) | 0.0624 (5) | |
H19 | −0.4684 | 0.4363 | 0.4826 | 0.075* | |
C20 | −0.21336 (19) | 0.41325 (6) | 0.50351 (12) | 0.0473 (4) | |
C21 | −0.21620 (19) | 0.37583 (6) | 0.57927 (12) | 0.0485 (4) | |
H21 | −0.3209 | 0.3692 | 0.6023 | 0.058* | |
C22 | −0.07049 (18) | 0.34901 (5) | 0.62000 (11) | 0.0421 (3) | |
H22 | −0.0754 | 0.3234 | 0.6697 | 0.051* | |
C23 | 0.51548 (16) | 0.39574 (5) | 0.85724 (10) | 0.0331 (3) | |
C24 | 0.68331 (17) | 0.37994 (5) | 0.84828 (11) | 0.0406 (3) | |
H24 | 0.7053 | 0.3458 | 0.8409 | 0.049* | |
C25 | 0.81350 (19) | 0.41323 (6) | 0.85009 (12) | 0.0483 (4) | |
H25 | 0.9250 | 0.4021 | 0.8431 | 0.058* | |
C26 | 0.78459 (18) | 0.46415 (5) | 0.86224 (11) | 0.0442 (3) | |
C27 | 0.9164 (2) | 0.50030 (7) | 0.86551 (15) | 0.0625 (5) | |
H27 | 1.0286 | 0.4907 | 0.8569 | 0.075* | |
C28 | 0.8826 (3) | 0.54880 (7) | 0.88092 (15) | 0.0691 (5) | |
H28 | 0.9722 | 0.5725 | 0.8831 | 0.083* | |
C29 | 0.7192 (3) | 0.56425 (6) | 0.89353 (14) | 0.0619 (5) | |
H29 | 0.6988 | 0.5981 | 0.9055 | 0.074* | |
C30 | 0.5895 (2) | 0.53092 (5) | 0.88874 (12) | 0.0506 (4) | |
H30 | 0.4778 | 0.5418 | 0.8961 | 0.061* | |
C31 | 0.61786 (18) | 0.48013 (5) | 0.87293 (10) | 0.0396 (3) | |
C32 | 0.48516 (17) | 0.44475 (5) | 0.86871 (10) | 0.0367 (3) | |
H32 | 0.3722 | 0.4553 | 0.8740 | 0.044* | |
C33 | −0.01793 (18) | 0.22392 (5) | 0.44723 (11) | 0.0400 (3) | |
H33A | −0.1017 | 0.2063 | 0.4814 | 0.048* | |
H33B | 0.0609 | 0.1995 | 0.4252 | 0.048* | |
C34 | −0.11200 (19) | 0.25281 (5) | 0.35288 (11) | 0.0445 (3) | |
H34A | −0.0272 | 0.2694 | 0.3190 | 0.053* | |
H34B | −0.1868 | 0.2775 | 0.3764 | 0.053* | |
H34C | −0.1835 | 0.2305 | 0.3016 | 0.053* | |
C35 | 0.65820 (18) | 0.31522 (5) | 1.14207 (10) | 0.0419 (3) | |
H35A | 0.7612 | 0.2956 | 1.1352 | 0.050* | |
H35B | 0.5874 | 0.2956 | 1.1821 | 0.050* | |
C36 | 0.7138 (2) | 0.36274 (6) | 1.19899 (13) | 0.0588 (4) | |
H36A | 0.7934 | 0.3558 | 1.2671 | 0.071* | |
H36B | 0.6113 | 0.3802 | 1.2121 | 0.071* | |
H36C | 0.7729 | 0.3833 | 1.1550 | 0.071* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0550 (6) | 0.0357 (5) | 0.0401 (5) | −0.0040 (4) | −0.0040 (4) | −0.0021 (4) |
O2 | 0.0533 (6) | 0.0400 (5) | 0.0338 (5) | −0.0012 (4) | 0.0010 (4) | 0.0004 (4) |
O3 | 0.0368 (5) | 0.0424 (5) | 0.0414 (5) | −0.0046 (4) | 0.0097 (4) | 0.0002 (4) |
O4 | 0.0330 (5) | 0.0413 (5) | 0.0545 (6) | 0.0036 (4) | 0.0084 (4) | −0.0037 (4) |
C1 | 0.0329 (7) | 0.0317 (7) | 0.0369 (7) | 0.0008 (5) | 0.0080 (5) | 0.0001 (5) |
C2 | 0.0353 (7) | 0.0371 (7) | 0.0366 (7) | 0.0010 (6) | 0.0064 (6) | 0.0002 (6) |
C3 | 0.0423 (8) | 0.0327 (7) | 0.0450 (8) | −0.0016 (6) | 0.0073 (6) | −0.0052 (6) |
C4 | 0.0444 (8) | 0.0303 (7) | 0.0464 (8) | 0.0019 (6) | 0.0121 (6) | 0.0018 (6) |
C5 | 0.0442 (8) | 0.0353 (7) | 0.0421 (7) | 0.0036 (6) | 0.0116 (6) | 0.0070 (6) |
C6 | 0.0423 (8) | 0.0409 (8) | 0.0364 (7) | 0.0020 (6) | 0.0070 (6) | 0.0057 (6) |
C7 | 0.0353 (7) | 0.0365 (7) | 0.0369 (7) | −0.0010 (5) | 0.0093 (6) | −0.0004 (6) |
C8 | 0.0314 (7) | 0.0341 (7) | 0.0359 (7) | 0.0003 (5) | 0.0096 (5) | 0.0006 (5) |
C9 | 0.0306 (7) | 0.0333 (7) | 0.0379 (7) | 0.0016 (5) | 0.0106 (5) | 0.0007 (5) |
C10 | 0.0363 (7) | 0.0329 (7) | 0.0403 (7) | 0.0018 (5) | 0.0129 (6) | 0.0008 (6) |
C11 | 0.0377 (7) | 0.0332 (7) | 0.0313 (6) | −0.0023 (6) | 0.0080 (5) | −0.0038 (5) |
C12 | 0.0345 (7) | 0.0359 (7) | 0.0299 (6) | 0.0026 (5) | 0.0059 (5) | −0.0019 (5) |
C13 | 0.0388 (7) | 0.0319 (7) | 0.0354 (7) | −0.0014 (5) | 0.0052 (6) | −0.0023 (5) |
C14 | 0.0442 (8) | 0.0379 (7) | 0.0405 (7) | −0.0013 (6) | 0.0081 (6) | −0.0002 (6) |
C15 | 0.0536 (9) | 0.0372 (8) | 0.0383 (7) | 0.0054 (6) | 0.0014 (6) | −0.0027 (6) |
C16 | 0.0757 (11) | 0.0484 (9) | 0.0467 (9) | 0.0077 (8) | 0.0025 (8) | 0.0062 (7) |
C17 | 0.1020 (16) | 0.0568 (11) | 0.0466 (10) | 0.0234 (10) | −0.0011 (10) | 0.0063 (8) |
C18 | 0.0869 (14) | 0.0723 (12) | 0.0513 (10) | 0.0402 (11) | −0.0081 (10) | −0.0061 (9) |
C19 | 0.0580 (10) | 0.0704 (11) | 0.0524 (10) | 0.0232 (9) | −0.0027 (8) | −0.0097 (9) |
C20 | 0.0497 (9) | 0.0462 (8) | 0.0415 (8) | 0.0089 (7) | −0.0003 (7) | −0.0087 (6) |
C21 | 0.0388 (8) | 0.0562 (9) | 0.0499 (9) | 0.0008 (7) | 0.0079 (7) | −0.0064 (7) |
C22 | 0.0397 (8) | 0.0423 (8) | 0.0442 (8) | −0.0018 (6) | 0.0085 (6) | 0.0011 (6) |
C23 | 0.0343 (7) | 0.0331 (7) | 0.0309 (6) | 0.0025 (5) | 0.0050 (5) | 0.0017 (5) |
C24 | 0.0379 (7) | 0.0387 (8) | 0.0451 (8) | 0.0051 (6) | 0.0090 (6) | −0.0004 (6) |
C25 | 0.0355 (8) | 0.0557 (9) | 0.0550 (9) | 0.0011 (7) | 0.0126 (7) | −0.0009 (7) |
C26 | 0.0448 (8) | 0.0470 (8) | 0.0409 (8) | −0.0075 (6) | 0.0096 (6) | 0.0013 (6) |
C27 | 0.0538 (10) | 0.0681 (12) | 0.0683 (11) | −0.0161 (9) | 0.0188 (8) | 0.0019 (9) |
C28 | 0.0800 (13) | 0.0545 (11) | 0.0735 (12) | −0.0304 (10) | 0.0180 (10) | 0.0014 (9) |
C29 | 0.0816 (13) | 0.0412 (9) | 0.0642 (11) | −0.0145 (8) | 0.0184 (9) | 0.0015 (8) |
C30 | 0.0653 (10) | 0.0363 (8) | 0.0507 (9) | −0.0037 (7) | 0.0133 (7) | 0.0025 (7) |
C31 | 0.0463 (8) | 0.0384 (7) | 0.0334 (7) | −0.0030 (6) | 0.0067 (6) | 0.0027 (6) |
C32 | 0.0369 (7) | 0.0365 (7) | 0.0358 (7) | 0.0027 (6) | 0.0058 (6) | 0.0023 (6) |
C33 | 0.0406 (7) | 0.0390 (7) | 0.0402 (7) | −0.0054 (6) | 0.0084 (6) | −0.0063 (6) |
C34 | 0.0436 (8) | 0.0497 (9) | 0.0393 (8) | −0.0073 (6) | 0.0067 (6) | −0.0009 (6) |
C35 | 0.0422 (8) | 0.0483 (8) | 0.0336 (7) | 0.0020 (6) | 0.0046 (6) | 0.0024 (6) |
C36 | 0.0677 (11) | 0.0549 (10) | 0.0465 (9) | −0.0021 (8) | −0.0043 (8) | −0.0030 (7) |
O1—C2 | 1.3602 (16) | C19—C20 | 1.422 (2) |
O1—C33 | 1.4278 (16) | C19—H19 | 0.9500 |
O2—C7 | 1.3676 (16) | C20—C21 | 1.410 (2) |
O2—C35 | 1.4351 (16) | C21—C22 | 1.365 (2) |
O3—C11 | 1.2217 (15) | C21—H21 | 0.9500 |
O4—C12 | 1.2237 (15) | C22—H22 | 0.9500 |
C1—C2 | 1.3867 (18) | C23—C32 | 1.3653 (18) |
C1—C9 | 1.4310 (18) | C23—C24 | 1.4164 (18) |
C1—C11 | 1.5075 (17) | C24—C25 | 1.363 (2) |
C2—C3 | 1.4117 (19) | C24—H24 | 0.9500 |
C3—C4 | 1.3583 (19) | C25—C26 | 1.415 (2) |
C3—H3 | 0.9500 | C25—H25 | 0.9500 |
C4—C10 | 1.4103 (19) | C26—C31 | 1.416 (2) |
C4—H4 | 0.9500 | C26—C27 | 1.422 (2) |
C5—C6 | 1.3600 (19) | C27—C28 | 1.366 (3) |
C5—C10 | 1.4086 (19) | C27—H27 | 0.9500 |
C5—H5 | 0.9500 | C28—C29 | 1.394 (3) |
C6—C7 | 1.4099 (19) | C28—H28 | 0.9500 |
C6—H6 | 0.9500 | C29—C30 | 1.356 (2) |
C7—C8 | 1.3852 (18) | C29—H29 | 0.9500 |
C8—C9 | 1.4332 (18) | C30—C31 | 1.418 (2) |
C8—C12 | 1.5049 (18) | C30—H30 | 0.9500 |
C9—C10 | 1.4300 (18) | C31—C32 | 1.4112 (19) |
C11—C13 | 1.4874 (18) | C32—H32 | 0.9500 |
C12—C23 | 1.4860 (18) | C33—C34 | 1.5004 (19) |
C13—C14 | 1.3680 (19) | C33—H33A | 0.9900 |
C13—C22 | 1.4145 (19) | C33—H33B | 0.9900 |
C14—C15 | 1.414 (2) | C34—H34A | 0.9800 |
C14—H14 | 0.9500 | C34—H34B | 0.9800 |
C15—C16 | 1.416 (2) | C34—H34C | 0.9800 |
C15—C20 | 1.419 (2) | C35—C36 | 1.501 (2) |
C16—C17 | 1.361 (2) | C35—H35A | 0.9900 |
C16—H16 | 0.9500 | C35—H35B | 0.9900 |
C17—C18 | 1.406 (3) | C36—H36A | 0.9800 |
C17—H17 | 0.9500 | C36—H36B | 0.9800 |
C18—C19 | 1.360 (3) | C36—H36C | 0.9800 |
C18—H18 | 0.9500 | ||
C2—O1—C33 | 119.78 (10) | C15—C20—C19 | 118.60 (15) |
C7—O2—C35 | 118.77 (10) | C22—C21—C20 | 120.90 (14) |
C2—C1—C9 | 119.74 (12) | C22—C21—H21 | 119.6 |
C2—C1—C11 | 117.44 (11) | C20—C21—H21 | 119.6 |
C9—C1—C11 | 122.15 (11) | C21—C22—C13 | 120.41 (13) |
O1—C2—C1 | 115.90 (11) | C21—C22—H22 | 119.8 |
O1—C2—C3 | 122.58 (12) | C13—C22—H22 | 119.8 |
C1—C2—C3 | 121.45 (12) | C32—C23—C24 | 119.41 (12) |
C4—C3—C2 | 119.16 (13) | C32—C23—C12 | 119.19 (11) |
C4—C3—H3 | 120.4 | C24—C23—C12 | 121.39 (12) |
C2—C3—H3 | 120.4 | C25—C24—C23 | 120.57 (13) |
C3—C4—C10 | 122.03 (13) | C25—C24—H24 | 119.7 |
C3—C4—H4 | 119.0 | C23—C24—H24 | 119.7 |
C10—C4—H4 | 119.0 | C24—C25—C26 | 120.79 (13) |
C6—C5—C10 | 122.08 (13) | C24—C25—H25 | 119.6 |
C6—C5—H5 | 119.0 | C26—C25—H25 | 119.6 |
C10—C5—H5 | 119.0 | C25—C26—C31 | 118.94 (13) |
C5—C6—C7 | 118.92 (13) | C25—C26—C27 | 122.96 (14) |
C5—C6—H6 | 120.5 | C31—C26—C27 | 118.09 (14) |
C7—C6—H6 | 120.5 | C28—C27—C26 | 120.42 (17) |
O2—C7—C8 | 115.41 (11) | C28—C27—H27 | 119.8 |
O2—C7—C6 | 122.84 (12) | C26—C27—H27 | 119.8 |
C8—C7—C6 | 121.69 (12) | C27—C28—C29 | 121.30 (16) |
C7—C8—C9 | 119.81 (12) | C27—C28—H28 | 119.4 |
C7—C8—C12 | 117.29 (11) | C29—C28—H28 | 119.4 |
C9—C8—C12 | 122.16 (11) | C30—C29—C28 | 119.88 (16) |
C10—C9—C1 | 118.13 (12) | C30—C29—H29 | 120.1 |
C10—C9—C8 | 117.81 (12) | C28—C29—H29 | 120.1 |
C1—C9—C8 | 124.05 (12) | C29—C30—C31 | 121.01 (16) |
C5—C10—C4 | 121.03 (12) | C29—C30—H30 | 119.5 |
C5—C10—C9 | 119.59 (12) | C31—C30—H30 | 119.5 |
C4—C10—C9 | 119.37 (12) | C32—C31—C26 | 118.77 (13) |
O3—C11—C13 | 121.04 (11) | C32—C31—C30 | 121.95 (13) |
O3—C11—C1 | 118.52 (11) | C26—C31—C30 | 119.28 (13) |
C13—C11—C1 | 120.43 (11) | C23—C32—C31 | 121.50 (12) |
O4—C12—C23 | 121.13 (12) | C23—C32—H32 | 119.3 |
O4—C12—C8 | 118.55 (11) | C31—C32—H32 | 119.3 |
C23—C12—C8 | 120.30 (11) | O1—C33—C34 | 106.08 (11) |
C14—C13—C22 | 119.55 (13) | O1—C33—H33A | 110.5 |
C14—C13—C11 | 119.60 (12) | C34—C33—H33A | 110.5 |
C22—C13—C11 | 120.81 (12) | O1—C33—H33B | 110.5 |
C13—C14—C15 | 121.49 (13) | C34—C33—H33B | 110.5 |
C13—C14—H14 | 119.3 | H33A—C33—H33B | 108.7 |
C15—C14—H14 | 119.3 | C33—C34—H34A | 109.5 |
C14—C15—C16 | 122.46 (15) | C33—C34—H34B | 109.5 |
C14—C15—C20 | 118.43 (13) | H34A—C34—H34B | 109.5 |
C16—C15—C20 | 119.08 (14) | C33—C34—H34C | 109.5 |
C17—C16—C15 | 120.76 (18) | H34A—C34—H34C | 109.5 |
C17—C16—H16 | 119.6 | H34B—C34—H34C | 109.5 |
C15—C16—H16 | 119.6 | O2—C35—C36 | 106.97 (12) |
C16—C17—C18 | 120.22 (18) | O2—C35—H35A | 110.3 |
C16—C17—H17 | 119.9 | C36—C35—H35A | 110.3 |
C18—C17—H17 | 119.9 | O2—C35—H35B | 110.3 |
C19—C18—C17 | 120.83 (17) | C36—C35—H35B | 110.3 |
C19—C18—H18 | 119.6 | H35A—C35—H35B | 108.6 |
C17—C18—H18 | 119.6 | C35—C36—H36A | 109.5 |
C18—C19—C20 | 120.51 (18) | C35—C36—H36B | 109.5 |
C18—C19—H19 | 119.7 | H36A—C36—H36B | 109.5 |
C20—C19—H19 | 119.7 | C35—C36—H36C | 109.5 |
C21—C20—C15 | 119.19 (13) | H36A—C36—H36C | 109.5 |
C21—C20—C19 | 122.21 (15) | H36B—C36—H36C | 109.5 |
C33—O1—C2—C1 | −175.31 (11) | C22—C13—C14—C15 | 0.0 (2) |
C33—O1—C2—C3 | 7.58 (19) | C11—C13—C14—C15 | −177.80 (12) |
C9—C1—C2—O1 | −178.78 (11) | C13—C14—C15—C16 | 179.53 (14) |
C11—C1—C2—O1 | −7.94 (17) | C13—C14—C15—C20 | 1.5 (2) |
C9—C1—C2—C3 | −1.64 (19) | C14—C15—C16—C17 | −177.36 (15) |
C11—C1—C2—C3 | 169.20 (12) | C20—C15—C16—C17 | 0.7 (2) |
O1—C2—C3—C4 | 175.83 (12) | C15—C16—C17—C18 | −0.5 (3) |
C1—C2—C3—C4 | −1.1 (2) | C16—C17—C18—C19 | 0.1 (3) |
C2—C3—C4—C10 | 1.7 (2) | C17—C18—C19—C20 | 0.1 (3) |
C10—C5—C6—C7 | 1.1 (2) | C14—C15—C20—C21 | −1.5 (2) |
C35—O2—C7—C8 | −177.25 (11) | C16—C15—C20—C21 | −179.60 (14) |
C35—O2—C7—C6 | 5.50 (18) | C14—C15—C20—C19 | 177.69 (13) |
C5—C6—C7—O2 | 174.74 (12) | C16—C15—C20—C19 | −0.4 (2) |
C5—C6—C7—C8 | −2.3 (2) | C18—C19—C20—C21 | 179.21 (16) |
O2—C7—C8—C9 | −176.70 (11) | C18—C19—C20—C15 | 0.0 (2) |
C6—C7—C8—C9 | 0.58 (19) | C15—C20—C21—C22 | 0.0 (2) |
O2—C7—C8—C12 | −6.34 (16) | C19—C20—C21—C22 | −179.14 (14) |
C6—C7—C8—C12 | 170.94 (12) | C20—C21—C22—C13 | 1.5 (2) |
C2—C1—C9—C10 | 3.69 (17) | C14—C13—C22—C21 | −1.5 (2) |
C11—C1—C9—C10 | −166.70 (11) | C11—C13—C22—C21 | 176.23 (12) |
C2—C1—C9—C8 | −175.25 (12) | O4—C12—C23—C32 | 14.09 (18) |
C11—C1—C9—C8 | 14.35 (18) | C8—C12—C23—C32 | −164.40 (12) |
C7—C8—C9—C10 | 2.31 (17) | O4—C12—C23—C24 | −165.25 (12) |
C12—C8—C9—C10 | −167.56 (11) | C8—C12—C23—C24 | 16.25 (18) |
C7—C8—C9—C1 | −178.74 (11) | C32—C23—C24—C25 | −0.6 (2) |
C12—C8—C9—C1 | 11.38 (19) | C12—C23—C24—C25 | 178.77 (13) |
C6—C5—C10—C4 | −177.56 (13) | C23—C24—C25—C26 | 0.8 (2) |
C6—C5—C10—C9 | 1.8 (2) | C24—C25—C26—C31 | 0.2 (2) |
C3—C4—C10—C5 | 179.80 (12) | C24—C25—C26—C27 | 179.46 (15) |
C3—C4—C10—C9 | 0.4 (2) | C25—C26—C27—C28 | −177.82 (16) |
C1—C9—C10—C5 | 177.50 (11) | C31—C26—C27—C28 | 1.4 (2) |
C8—C9—C10—C5 | −3.49 (18) | C26—C27—C28—C29 | −0.2 (3) |
C1—C9—C10—C4 | −3.10 (18) | C27—C28—C29—C30 | −1.1 (3) |
C8—C9—C10—C4 | 175.91 (11) | C28—C29—C30—C31 | 1.1 (3) |
C2—C1—C11—O3 | −117.99 (13) | C25—C26—C31—C32 | −1.4 (2) |
C9—C1—C11—O3 | 52.62 (17) | C27—C26—C31—C32 | 179.34 (14) |
C2—C1—C11—C13 | 60.82 (16) | C25—C26—C31—C30 | 177.88 (14) |
C9—C1—C11—C13 | −128.58 (13) | C27—C26—C31—C30 | −1.4 (2) |
C7—C8—C12—O4 | −111.96 (14) | C29—C30—C31—C32 | 179.38 (14) |
C9—C8—C12—O4 | 58.15 (17) | C29—C30—C31—C26 | 0.1 (2) |
C7—C8—C12—C23 | 66.57 (15) | C24—C23—C32—C31 | −0.64 (19) |
C9—C8—C12—C23 | −123.31 (13) | C12—C23—C32—C31 | 180.00 (12) |
O3—C11—C13—C14 | 21.18 (19) | C26—C31—C32—C23 | 1.62 (19) |
C1—C11—C13—C14 | −157.60 (12) | C30—C31—C32—C23 | −177.63 (13) |
O3—C11—C13—C22 | −156.59 (13) | C2—O1—C33—C34 | 171.47 (11) |
C1—C11—C13—C22 | 24.64 (18) | C7—O2—C35—C36 | 176.89 (12) |
D—H···A | D—H | H···A | D···A | D—H···A |
C21—H21···O3i | 0.95 | 2.45 | 3.3958 (18) | 173 |
C25—H25···O4ii | 0.95 | 2.45 | 3.3996 (18) | 176 |
Symmetry codes: (i) x−1, y, z; (ii) x+1, y, z. |
Experimental details
Crystal data | |
Chemical formula | C36H28O4 |
Mr | 524.58 |
Crystal system, space group | Monoclinic, P21/c |
Temperature (K) | 193 |
a, b, c (Å) | 7.86946 (14), 27.1458 (5), 12.8490 (2) |
β (°) | 102.267 (1) |
V (Å3) | 2682.16 (8) |
Z | 4 |
Radiation type | Cu Kα |
µ (mm−1) | 0.67 |
Crystal size (mm) | 0.50 × 0.25 × 0.20 |
Data collection | |
Diffractometer | Rigaku R-AXIS RAPID diffractometer |
Absorption correction | Numerical (NUMABS; Higashi, 1999) |
Tmin, Tmax | 0.732, 0.878 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 41696, 4914, 3996 |
Rint | 0.029 |
(sin θ/λ)max (Å−1) | 0.602 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.036, 0.097, 1.09 |
No. of reflections | 4914 |
No. of parameters | 364 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.20, −0.15 |
Computer programs: PROCESS-AUTO (Rigaku, 1998), CrystalStructure (Rigaku, 2010), SIR2004 (Burla et al., 2005), SHELXL97 (Sheldrick, 2008), ORTEPIII (Burnett & Johnson, 1996).
D—H···A | D—H | H···A | D···A | D—H···A |
C21—H21···O3i | 0.95 | 2.45 | 3.3958 (18) | 173 |
C25—H25···O4ii | 0.95 | 2.45 | 3.3996 (18) | 176 |
Symmetry codes: (i) x−1, y, z; (ii) x+1, y, z. |
Acknowledgements
The authors express their gratitude to Professor Keiichi Noguchi, Instrumentation Analysis Center, Tokyo University of Agriculture & Technology, for technical advice. This work was partially supported by an Iron and Steel Institute of Japan (ISIJ) Research Promotion Grant.
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 study on selective electrophilic aromatic aroylation of the naphthalene ring core, 1,8-diaroylnaphthalene compounds have proved to be formed regioselectively by the aid of a suitable acidic mediator (Okamoto & Yonezawa, 2009, Okamoto et al., 2011). Recently, we have reported the crystal structures of several 1,8-diaroylated naphthalene analogues exemplified by 1,8-dibenzoyl-2,7-dimethoxynaphthalene (Nakaema et al., 2008), [2,7-dimethoxy-8-(2-naphthoyl)naphthalen-1-yl](naphthalen-2-yl)methanone (Tsumuki et al., 2011), {2,7-dimethoxy-8-[4-(2-methylpropyl)benzoyl]naphthalen-1-yl}[4-(2-methylpropyl) phenyl]methanone (Sasagawa et al., 2012), (8-benzoyl-2,7-diethoxynaphthalen-1-yl)(phenyl)methanone (Isogai et al., 2013), and [8-(4-phenoxybenzoyl)-2,7-bis(propan-2-yloxy)naphthalen-1-yl](4-phenoxyphenyl) methanone (Yoshiwaka et al., 2013). The most simple analogues in these compounds, 1,8-dibenzoyl-2,7-dimethoxynaphthalene (Nakaema et al., 2008) and [2,7-dimethoxy-8-(2-naphthoyl)naphthalen-1-yl](naphthalen-2-yl)methanone (Tsumuki et al., 2011), lie across a crystallographic 2-fold axis and the molecular packing are stabilized by C—H···O interactions and π···π interactions between the aroyl groups. As a part of our ongoing studies on the molecular structures of these kinds of homologous molecules, the X-ray crystal structure of the title compound is reported on herein.
The molecular structure of the title molecule is illustrated in Fig. 1. The two terminal naphthoyl groups are situated in an opposite direction and twisted away from the central 2,7-diethoxynaphthalene unit. The dihedral angles between the two naphthalene rings of the terminal naphthoyl groups (C13—C22 and C23—C32) is 48.35 (5)°. The dihedral angles between the terminal napthalene rings and the central naphthalene ring (C1—C10) are 77.64 (4) and 73.73 (4)°. The torsion angles between the carbonyl moieties and the central naphthalene ring are -52.63 (18)° [C9—C1—C11—O3] and -58.16 (17)° [C9—C8—C12—O4]. On the other hand, the carbonyl groups are slightly twisted away from the attached terminal naphthalene rings [torsion angles O3—C11—C13—C14 = -21.17 (19)° and O4—C12—C23—C32 = -14.10 (19)°]. In the crystal, the molecular packing of the title compound is mainly stabilized by two C—H···O interactions between the naphthoyl moieties leading to the formation of chains along the a axis (Table 1 and Fig. 2).