In the title compound, C
16H
16O
4, the two ester groups are not coplanar with the naphthyl ring system. The crystal packing is stabilized by C—H
O hydrogen bonds.
Supporting information
CCDC reference: 610714
Key indicators
- Single-crystal X-ray study
- T = 298 K
- Mean (C-C) = 0.004 Å
- R factor = 0.064
- wR factor = 0.172
- Data-to-parameter ratio = 14.0
checkCIF/PLATON results
No syntax errors found
Alert level B
PLAT220_ALERT_2_B Large Non-Solvent C Ueq(max)/Ueq(min) ... 3.83 Ratio
PLAT242_ALERT_2_B Check Low Ueq as Compared to Neighbors for C12
Alert level C
PLAT125_ALERT_4_C No _symmetry_space_group_name_Hall Given ....... ?
PLAT222_ALERT_3_C Large Non-Solvent H Ueq(max)/Ueq(min) ... 3.63 Ratio
PLAT242_ALERT_2_C Check Low Ueq as Compared to Neighbors for C15
0 ALERT level A = In general: serious problem
2 ALERT level B = Potentially serious problem
3 ALERT level C = Check and explain
0 ALERT level G = General alerts; check
0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data
3 ALERT type 2 Indicator that the structure model may be wrong or deficient
1 ALERT type 3 Indicator that the structure quality may be low
1 ALERT type 4 Improvement, methodology, query or suggestion
Data collection: XSCANS (Siemens, 1996); cell refinement: XSCANS; data reduction: XSCANS; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: ORTEP-3 for Windows (Farrugia,1997); software used to prepare material for publication: SHELXL97.
Diethyl naphthalene-1,4-dicarboxylate
top
Crystal data top
C16H16O4 | F(000) = 1152 |
Mr = 272.29 | Dx = 1.249 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
a = 24.731 (7) Å | Cell parameters from 33 reflections |
b = 7.2792 (16) Å | θ = 3.2–19.8° |
c = 16.151 (4) Å | µ = 0.09 mm−1 |
β = 95.277 (19)° | T = 298 K |
V = 2895.2 (13) Å3 | Block, colourless |
Z = 8 | 0.58 × 0.48 × 0.36 mm |
Data collection top
Siemens P4 diffractometer | Rint = 0.058 |
Radiation source: fine-focus sealed tube | θmax = 25.0°, θmin = 1.7° |
Graphite monochromator | h = 0→29 |
ω scans | k = 0→8 |
2632 measured reflections | l = −19→19 |
2569 independent reflections | 3 standard reflections every 97 reflections |
1400 reflections with I > 2σ(I) | intensity decay: 3.3% |
Refinement top
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)] = 0.064 | H-atom parameters constrained |
wR(F2) = 0.173 | w = 1/[σ2(Fo2) + (0.091P)2] where P = (Fo2 + 2Fc2)/3 |
S = 1.01 | (Δ/σ)max = 0.001 |
2569 reflections | Δρmax = 0.49 e Å−3 |
184 parameters | Δρmin = −0.40 e Å−3 |
2 restraints | Extinction correction: SHELXL97, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.0144 (15) |
Special details top
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. |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top | x | y | z | Uiso*/Ueq | |
O1 | 0.38480 (7) | 0.5421 (3) | 0.43238 (12) | 0.0780 (7) | |
O2 | 0.40796 (9) | 0.4634 (4) | 0.56335 (13) | 0.0950 (8) | |
O3 | 0.11616 (8) | 0.5334 (3) | 0.44940 (12) | 0.0782 (6) | |
O4 | 0.11771 (9) | 0.4472 (4) | 0.58165 (13) | 0.0931 (8) | |
C1 | 0.31396 (10) | 0.5112 (3) | 0.51650 (15) | 0.0507 (6) | |
C2 | 0.27985 (11) | 0.4613 (3) | 0.44841 (14) | 0.0522 (7) | |
H2 | 0.2943 | 0.4279 | 0.3994 | 0.063* | |
C3 | 0.22389 (11) | 0.4600 (3) | 0.45176 (15) | 0.0530 (7) | |
H3 | 0.2015 | 0.4245 | 0.4051 | 0.064* | |
C4 | 0.20122 (10) | 0.5095 (3) | 0.52211 (15) | 0.0500 (6) | |
C5 | 0.21361 (11) | 0.6430 (4) | 0.66549 (15) | 0.0590 (7) | |
H5 | 0.1762 | 0.6445 | 0.6684 | 0.071* | |
C6 | 0.24699 (13) | 0.7109 (4) | 0.72981 (15) | 0.0669 (8) | |
H6 | 0.2321 | 0.7608 | 0.7757 | 0.080* | |
C7 | 0.30319 (13) | 0.7067 (4) | 0.72788 (16) | 0.0699 (8) | |
H7 | 0.3256 | 0.7516 | 0.7727 | 0.084* | |
C8 | 0.32509 (11) | 0.6376 (4) | 0.66107 (15) | 0.0619 (7) | |
H8 | 0.3627 | 0.6351 | 0.6607 | 0.074* | |
C9 | 0.29228 (10) | 0.5686 (3) | 0.59151 (14) | 0.0504 (7) | |
C10 | 0.23506 (11) | 0.5701 (3) | 0.59411 (14) | 0.0499 (6) | |
C11 | 0.37372 (12) | 0.5038 (4) | 0.50941 (18) | 0.0644 (8) | |
C12 | 0.44059 (13) | 0.5208 (6) | 0.4157 (2) | 0.1036 (12) | |
H12A | 0.4523 | 0.3952 | 0.4264 | 0.124* | |
H12B | 0.4636 | 0.6018 | 0.4513 | 0.124* | |
C13 | 0.44423 (17) | 0.5673 (10) | 0.3283 (2) | 0.191 (3) | |
H13A | 0.4275 | 0.4721 | 0.2937 | 0.229* | |
H13B | 0.4817 | 0.5787 | 0.3180 | 0.229* | |
H13C | 0.4259 | 0.6816 | 0.3158 | 0.229* | |
C14 | 0.14138 (12) | 0.4937 (4) | 0.52399 (18) | 0.0639 (7) | |
C15 | 0.05814 (12) | 0.5075 (6) | 0.4401 (2) | 0.0987 (12) | |
H15A | 0.0408 | 0.5908 | 0.4764 | 0.118* | |
H15B | 0.0492 | 0.3825 | 0.4546 | 0.118* | |
C16 | 0.03919 (17) | 0.5448 (9) | 0.3526 (2) | 0.169 (2) | |
H16A | 0.0497 | 0.6669 | 0.3382 | 0.203* | |
H16B | 0.0004 | 0.5343 | 0.3450 | 0.203* | |
H16C | 0.0552 | 0.4577 | 0.3174 | 0.203* | |
Atomic displacement parameters (Å2) top | U11 | U22 | U33 | U12 | U13 | U23 |
O1 | 0.0544 (12) | 0.1125 (17) | 0.0681 (12) | 0.0041 (11) | 0.0116 (9) | 0.0099 (12) |
O2 | 0.0736 (15) | 0.131 (2) | 0.0766 (14) | 0.0295 (14) | −0.0111 (12) | 0.0019 (14) |
O3 | 0.0526 (12) | 0.1032 (16) | 0.0771 (13) | −0.0095 (11) | −0.0021 (10) | 0.0150 (12) |
O4 | 0.0838 (16) | 0.1209 (19) | 0.0777 (15) | −0.0264 (14) | 0.0244 (12) | 0.0134 (13) |
C1 | 0.0596 (16) | 0.0428 (14) | 0.0494 (14) | 0.0042 (12) | 0.0030 (12) | 0.0059 (12) |
C2 | 0.0630 (17) | 0.0487 (15) | 0.0451 (14) | 0.0042 (12) | 0.0064 (12) | 0.0021 (12) |
C3 | 0.0623 (17) | 0.0492 (15) | 0.0461 (14) | −0.0028 (13) | −0.0019 (12) | 0.0018 (12) |
C4 | 0.0577 (16) | 0.0419 (14) | 0.0506 (14) | −0.0024 (12) | 0.0065 (12) | 0.0071 (12) |
C5 | 0.0726 (18) | 0.0537 (16) | 0.0518 (15) | 0.0042 (14) | 0.0113 (13) | 0.0079 (13) |
C6 | 0.101 (2) | 0.0582 (18) | 0.0421 (16) | 0.0020 (17) | 0.0121 (16) | 0.0007 (13) |
C7 | 0.087 (2) | 0.072 (2) | 0.0490 (16) | −0.0099 (17) | −0.0032 (15) | 0.0003 (14) |
C8 | 0.0701 (18) | 0.0631 (17) | 0.0512 (15) | −0.0057 (15) | −0.0017 (13) | 0.0042 (14) |
C9 | 0.0645 (17) | 0.0422 (14) | 0.0434 (13) | 0.0008 (12) | −0.0006 (12) | 0.0076 (11) |
C10 | 0.0688 (17) | 0.0380 (13) | 0.0434 (14) | 0.0015 (12) | 0.0072 (12) | 0.0089 (11) |
C11 | 0.0616 (18) | 0.0641 (18) | 0.0661 (18) | 0.0080 (15) | −0.0015 (15) | −0.0016 (15) |
C12 | 0.0546 (19) | 0.148 (3) | 0.110 (3) | 0.004 (2) | 0.0165 (18) | −0.011 (3) |
C13 | 0.083 (3) | 0.383 (10) | 0.114 (3) | −0.015 (4) | 0.048 (3) | 0.013 (5) |
C14 | 0.0678 (18) | 0.0582 (18) | 0.0659 (17) | −0.0097 (15) | 0.0083 (15) | 0.0031 (15) |
C15 | 0.0546 (19) | 0.116 (3) | 0.125 (3) | −0.0091 (19) | 0.0020 (19) | 0.002 (2) |
C16 | 0.088 (3) | 0.266 (7) | 0.143 (4) | −0.047 (4) | −0.043 (3) | 0.034 (4) |
Geometric parameters (Å, º) top
O1—C11 | 1.328 (3) | C6—H6 | 0.9300 |
O1—C12 | 1.438 (3) | C7—C8 | 1.348 (4) |
O2—C11 | 1.194 (3) | C7—H7 | 0.9300 |
O3—C14 | 1.336 (3) | C8—C9 | 1.416 (3) |
O3—C15 | 1.441 (4) | C8—H8 | 0.9300 |
O4—C14 | 1.194 (3) | C9—C10 | 1.420 (3) |
C1—C2 | 1.372 (3) | C12—C13 | 1.463 (3) |
C1—C9 | 1.432 (3) | C12—H12A | 0.9700 |
C1—C11 | 1.494 (4) | C12—H12B | 0.9700 |
C2—C3 | 1.390 (3) | C13—H13A | 0.9600 |
C2—H2 | 0.9300 | C13—H13B | 0.9600 |
C3—C4 | 1.361 (3) | C13—H13C | 0.9600 |
C3—H3 | 0.9300 | C15—C16 | 1.473 (3) |
C4—C10 | 1.438 (3) | C15—H15A | 0.9700 |
C4—C14 | 1.487 (4) | C15—H15B | 0.9700 |
C5—C6 | 1.359 (4) | C16—H16A | 0.9600 |
C5—C10 | 1.416 (3) | C16—H16B | 0.9600 |
C5—H5 | 0.9300 | C16—H16C | 0.9600 |
C6—C7 | 1.393 (4) | | |
| | | |
C11—O1—C12 | 115.9 (2) | C9—C10—C4 | 118.8 (2) |
C14—O3—C15 | 116.3 (2) | O2—C11—O1 | 122.8 (3) |
C2—C1—C9 | 120.3 (2) | O2—C11—C1 | 126.4 (3) |
C2—C1—C11 | 117.9 (2) | O1—C11—C1 | 110.8 (2) |
C9—C1—C11 | 121.7 (2) | O1—C12—C13 | 107.5 (3) |
C1—C2—C3 | 120.8 (2) | O1—C12—H12A | 110.2 |
C1—C2—H2 | 119.6 | C13—C12—H12A | 110.2 |
C3—C2—H2 | 119.6 | O1—C12—H12B | 110.2 |
C4—C3—C2 | 121.2 (2) | C13—C12—H12B | 110.2 |
C4—C3—H3 | 119.4 | H12A—C12—H12B | 108.5 |
C2—C3—H3 | 119.4 | C12—C13—H13A | 109.5 |
C3—C4—C10 | 120.2 (2) | C12—C13—H13B | 109.5 |
C3—C4—C14 | 118.9 (2) | H13A—C13—H13B | 109.5 |
C10—C4—C14 | 120.9 (2) | C12—C13—H13C | 109.5 |
C6—C5—C10 | 120.8 (3) | H13A—C13—H13C | 109.5 |
C6—C5—H5 | 119.6 | H13B—C13—H13C | 109.5 |
C10—C5—H5 | 119.6 | O4—C14—O3 | 122.9 (3) |
C5—C6—C7 | 120.8 (3) | O4—C14—C4 | 126.7 (3) |
C5—C6—H6 | 119.6 | O3—C14—C4 | 110.3 (2) |
C7—C6—H6 | 119.6 | O3—C15—C16 | 107.6 (3) |
C8—C7—C6 | 120.1 (3) | O3—C15—H15A | 110.2 |
C8—C7—H7 | 120.0 | C16—C15—H15A | 110.2 |
C6—C7—H7 | 120.0 | O3—C15—H15B | 110.2 |
C7—C8—C9 | 121.6 (3) | C16—C15—H15B | 110.2 |
C7—C8—H8 | 119.2 | H15A—C15—H15B | 108.5 |
C9—C8—H8 | 119.2 | C15—C16—H16A | 109.5 |
C8—C9—C10 | 118.3 (2) | C15—C16—H16B | 109.5 |
C8—C9—C1 | 122.9 (2) | H16A—C16—H16B | 109.5 |
C10—C9—C1 | 118.6 (2) | C15—C16—H16C | 109.5 |
C5—C10—C9 | 118.4 (2) | H16A—C16—H16C | 109.5 |
C5—C10—C4 | 122.7 (2) | H16B—C16—H16C | 109.5 |
| | | |
C9—C1—C2—C3 | −2.0 (4) | C1—C9—C10—C4 | 1.5 (3) |
C11—C1—C2—C3 | 178.1 (2) | C3—C4—C10—C5 | 172.6 (2) |
C1—C2—C3—C4 | 0.6 (4) | C14—C4—C10—C5 | −9.5 (4) |
C2—C3—C4—C10 | 1.9 (4) | C3—C4—C10—C9 | −2.9 (3) |
C2—C3—C4—C14 | −176.0 (2) | C14—C4—C10—C9 | 174.9 (2) |
C10—C5—C6—C7 | −1.4 (4) | C12—O1—C11—O2 | 3.8 (5) |
C5—C6—C7—C8 | 1.1 (4) | C12—O1—C11—C1 | −173.9 (3) |
C6—C7—C8—C9 | 0.2 (4) | C2—C1—C11—O2 | −145.2 (3) |
C7—C8—C9—C10 | −1.3 (4) | C9—C1—C11—O2 | 34.9 (4) |
C7—C8—C9—C1 | 173.7 (2) | C2—C1—C11—O1 | 32.4 (3) |
C2—C1—C9—C8 | −174.1 (2) | C9—C1—C11—O1 | −147.5 (2) |
C11—C1—C9—C8 | 5.9 (4) | C11—O1—C12—C13 | 179.5 (4) |
C2—C1—C9—C10 | 0.9 (3) | C15—O3—C14—O4 | −3.3 (4) |
C11—C1—C9—C10 | −179.2 (2) | C15—O3—C14—C4 | 174.6 (3) |
C6—C5—C10—C9 | 0.3 (4) | C3—C4—C14—O4 | 142.4 (3) |
C6—C5—C10—C4 | −175.2 (2) | C10—C4—C14—O4 | −35.5 (4) |
C8—C9—C10—C5 | 1.0 (3) | C3—C4—C14—O3 | −35.4 (3) |
C1—C9—C10—C5 | −174.2 (2) | C10—C4—C14—O3 | 146.8 (2) |
C8—C9—C10—C4 | 176.7 (2) | C14—O3—C15—C16 | −175.7 (4) |
Hydrogen-bond geometry (Å, º) top
D—H···A | D—H | H···A | D···A | D—H···A |
C5—H5···O4 | 0.93 | 2.40 | 2.983 (3) | 121 |
C8—H8···O2 | 0.93 | 2.37 | 2.982 (4) | 123 |