| Literature DB >> 24098242 |
Kai Wang1, Chaofan Ju, Jian Xiao, Qiang Chen.
Abstract
In the title compound, C16H16O4, the aromatic rings are almost normal to one another, making a dihedral angle of 85.81 (10)°. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds, forming chains propagating along the b-axis direction. There are also C-H⋯π inter-actions present which link the chains, forming two-dimensional networks lying parallel to (102).Entities:
Year: 2013 PMID: 24098242 PMCID: PMC3790423 DOI: 10.1107/S1600536813025415
Source DB: PubMed Journal: Acta Crystallogr Sect E Struct Rep Online ISSN: 1600-5368
| C16H16O4 | |
| Monoclinic, | Mo |
| Hall symbol: -P 2ybc | Cell parameters from 1683 reflections |
| θ = 5.3–45.5° | |
| µ = 0.09 mm−1 | |
| β = 94.018 (3)° | Block, colourless |
| 0.12 × 0.12 × 0.10 mm | |
| Enraf–Nonius CAD-4 diffractometer | 1666 reflections with |
| Radiation source: fine-focus sealed tube | |
| Graphite monochromator | θmax = 25.0°, θmin = 2.3° |
| ω/2θ scans | |
| Absorption correction: ψ scan (North | |
| 7732 measured reflections | 3 standard reflections every 120 min |
| 2454 independent reflections | intensity decay: 1% |
| Refinement on | Primary atom site location: structure-invariant direct methods |
| Least-squares matrix: full | Secondary atom site location: difference Fourier map |
| Hydrogen site location: inferred from neighbouring sites | |
| H-atom parameters constrained | |
| 2454 reflections | (Δ/σ)max = 0.005 |
| 182 parameters | Δρmax = 0.18 e Å−3 |
| 0 restraints | Δρmin = −0.17 e Å−3 |
| 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 |
| O1 | 0.8880 (3) | 0.30300 (7) | 0.59482 (9) | 0.0538 (4) | |
| O2 | 0.5720 (3) | 0.29367 (7) | 0.71794 (9) | 0.0573 (4) | |
| O3 | 0.3782 (4) | 0.61921 (8) | 0.64985 (12) | 0.0841 (5) | |
| O4 | 0.2344 (3) | 0.55257 (8) | 0.76146 (10) | 0.0702 (5) | |
| C1 | 1.3108 (4) | 0.18726 (11) | 0.53747 (14) | 0.0585 (6) | |
| H1 | 1.4248 | 0.2124 | 0.5774 | 0.070* | |
| C2 | 1.3529 (5) | 0.11390 (13) | 0.51813 (17) | 0.0714 (7) | |
| H2 | 1.4940 | 0.0896 | 0.5457 | 0.086* | |
| C3 | 1.1895 (5) | 0.07597 (12) | 0.45856 (17) | 0.0703 (7) | |
| H3 | 1.2194 | 0.0263 | 0.4453 | 0.084* | |
| C4 | 0.9838 (5) | 0.11185 (14) | 0.41926 (18) | 0.0789 (7) | |
| H4 | 0.8709 | 0.0866 | 0.3790 | 0.095* | |
| C5 | 0.9409 (4) | 0.18540 (14) | 0.43850 (16) | 0.0682 (6) | |
| H5 | 0.8002 | 0.2095 | 0.4104 | 0.082* | |
| C6 | 1.1025 (4) | 0.22385 (11) | 0.49856 (13) | 0.0475 (5) | |
| C7 | 1.0484 (4) | 0.30341 (11) | 0.52037 (14) | 0.0552 (5) | |
| H7A | 1.2064 | 0.3297 | 0.5366 | 0.066* | |
| H7B | 0.9622 | 0.3279 | 0.4687 | 0.066* | |
| C8 | 0.7756 (3) | 0.36807 (10) | 0.61691 (12) | 0.0456 (5) | |
| C9 | 0.6001 (3) | 0.36283 (10) | 0.68347 (12) | 0.0430 (4) | |
| C10 | 0.4714 (3) | 0.42556 (10) | 0.70828 (12) | 0.0463 (5) | |
| H10 | 0.3552 | 0.4222 | 0.7525 | 0.056* | |
| C11 | 0.5133 (4) | 0.49364 (10) | 0.66796 (12) | 0.0481 (5) | |
| C12 | 0.6864 (4) | 0.49822 (11) | 0.60332 (15) | 0.0629 (6) | |
| H12 | 0.7146 | 0.5438 | 0.5760 | 0.075* | |
| C13 | 0.8196 (4) | 0.43625 (11) | 0.57813 (16) | 0.0631 (6) | |
| H13 | 0.9389 | 0.4404 | 0.5350 | 0.076* | |
| C14 | 0.3712 (4) | 0.28318 (11) | 0.77630 (14) | 0.0581 (6) | |
| H14A | 0.3996 | 0.3146 | 0.8282 | 0.087* | |
| H14B | 0.3679 | 0.2321 | 0.7951 | 0.087* | |
| H14C | 0.2109 | 0.2958 | 0.7450 | 0.087* | |
| C15 | 0.3720 (4) | 0.56143 (11) | 0.69069 (15) | 0.0561 (5) | |
| C16 | 0.0836 (5) | 0.61549 (13) | 0.78568 (19) | 0.0836 (8) | |
| H16A | 0.1948 | 0.6546 | 0.8085 | 0.100* | |
| H16B | −0.0272 | 0.6009 | 0.8312 | 0.100* | |
| H16C | −0.0171 | 0.6329 | 0.7335 | 0.100* |
| O1 | 0.0645 (9) | 0.0414 (7) | 0.0585 (8) | 0.0127 (6) | 0.0255 (7) | 0.0029 (6) |
| O2 | 0.0783 (10) | 0.0372 (7) | 0.0597 (8) | 0.0080 (6) | 0.0284 (7) | 0.0058 (6) |
| O3 | 0.1240 (15) | 0.0404 (9) | 0.0900 (12) | 0.0199 (8) | 0.0231 (10) | 0.0051 (8) |
| O4 | 0.0835 (11) | 0.0497 (9) | 0.0804 (10) | 0.0211 (7) | 0.0277 (9) | −0.0038 (7) |
| C1 | 0.0590 (13) | 0.0555 (13) | 0.0617 (13) | 0.0077 (10) | 0.0084 (10) | −0.0034 (10) |
| C2 | 0.0729 (15) | 0.0581 (14) | 0.0848 (17) | 0.0183 (12) | 0.0168 (13) | 0.0063 (13) |
| C3 | 0.0827 (17) | 0.0462 (12) | 0.0868 (17) | −0.0010 (12) | 0.0399 (14) | −0.0076 (12) |
| C4 | 0.0712 (16) | 0.0758 (18) | 0.0911 (18) | −0.0194 (13) | 0.0155 (14) | −0.0256 (14) |
| C5 | 0.0511 (12) | 0.0743 (16) | 0.0796 (16) | 0.0061 (11) | 0.0058 (11) | −0.0059 (13) |
| C6 | 0.0469 (11) | 0.0491 (11) | 0.0487 (11) | 0.0023 (9) | 0.0188 (9) | 0.0002 (9) |
| C7 | 0.0582 (12) | 0.0511 (12) | 0.0591 (12) | 0.0094 (9) | 0.0242 (10) | 0.0056 (10) |
| C8 | 0.0485 (10) | 0.0385 (10) | 0.0504 (10) | 0.0063 (8) | 0.0082 (8) | −0.0017 (8) |
| C9 | 0.0503 (10) | 0.0344 (9) | 0.0448 (10) | 0.0026 (8) | 0.0062 (8) | 0.0007 (8) |
| C10 | 0.0510 (11) | 0.0433 (11) | 0.0456 (10) | 0.0046 (8) | 0.0097 (8) | −0.0038 (9) |
| C11 | 0.0548 (11) | 0.0358 (10) | 0.0538 (11) | 0.0039 (8) | 0.0054 (9) | −0.0034 (9) |
| C12 | 0.0768 (14) | 0.0374 (10) | 0.0771 (15) | 0.0008 (10) | 0.0244 (12) | 0.0060 (10) |
| C13 | 0.0676 (13) | 0.0468 (12) | 0.0786 (14) | 0.0061 (10) | 0.0323 (11) | 0.0080 (11) |
| C14 | 0.0702 (14) | 0.0482 (12) | 0.0581 (12) | −0.0017 (10) | 0.0208 (10) | 0.0073 (10) |
| C15 | 0.0660 (13) | 0.0408 (11) | 0.0613 (13) | 0.0066 (9) | 0.0027 (11) | −0.0086 (10) |
| C16 | 0.0882 (18) | 0.0625 (15) | 0.1027 (19) | 0.0262 (13) | 0.0258 (15) | −0.0171 (14) |
| O1—C8 | 1.360 (2) | C7—H7A | 0.9700 |
| O1—C7 | 1.437 (2) | C7—H7B | 0.9700 |
| O2—C9 | 1.357 (2) | C8—C13 | 1.381 (3) |
| O2—C14 | 1.424 (2) | C8—C9 | 1.402 (3) |
| O3—C15 | 1.205 (2) | C9—C10 | 1.378 (2) |
| O4—C15 | 1.327 (3) | C10—C11 | 1.387 (3) |
| O4—C16 | 1.440 (2) | C10—H10 | 0.9300 |
| C1—C6 | 1.369 (3) | C11—C12 | 1.371 (3) |
| C1—C2 | 1.371 (3) | C11—C15 | 1.477 (3) |
| C1—H1 | 0.9300 | C12—C13 | 1.381 (3) |
| C2—C3 | 1.371 (3) | C12—H12 | 0.9300 |
| C2—H2 | 0.9300 | C13—H13 | 0.9300 |
| C3—C4 | 1.354 (3) | C14—H14A | 0.9600 |
| C3—H3 | 0.9300 | C14—H14B | 0.9600 |
| C4—C5 | 1.374 (3) | C14—H14C | 0.9600 |
| C4—H4 | 0.9300 | C16—H16A | 0.9601 |
| C5—C6 | 1.374 (3) | C16—H16B | 0.9601 |
| C5—H5 | 0.9300 | C16—H16C | 0.9600 |
| C6—C7 | 1.498 (3) | ||
| C8—O1—C7 | 117.96 (14) | O2—C9—C10 | 125.47 (16) |
| C9—O2—C14 | 117.16 (14) | O2—C9—C8 | 115.00 (15) |
| C15—O4—C16 | 116.30 (17) | C10—C9—C8 | 119.53 (16) |
| C6—C1—C2 | 120.6 (2) | C9—C10—C11 | 120.70 (17) |
| C6—C1—H1 | 119.7 | C9—C10—H10 | 119.7 |
| C2—C1—H1 | 119.7 | C11—C10—H10 | 119.7 |
| C1—C2—C3 | 120.8 (2) | C12—C11—C10 | 119.29 (17) |
| C1—C2—H2 | 119.6 | C12—C11—C15 | 118.61 (17) |
| C3—C2—H2 | 119.6 | C10—C11—C15 | 122.08 (18) |
| C4—C3—C2 | 119.1 (2) | C11—C12—C13 | 120.99 (18) |
| C4—C3—H3 | 120.5 | C11—C12—H12 | 119.5 |
| C2—C3—H3 | 120.5 | C13—C12—H12 | 119.5 |
| C3—C4—C5 | 120.3 (2) | C12—C13—C8 | 120.00 (19) |
| C3—C4—H4 | 119.8 | C12—C13—H13 | 120.0 |
| C5—C4—H4 | 119.8 | C8—C13—H13 | 120.0 |
| C4—C5—C6 | 121.1 (2) | O2—C14—H14A | 109.5 |
| C4—C5—H5 | 119.4 | O2—C14—H14B | 109.5 |
| C6—C5—H5 | 119.4 | H14A—C14—H14B | 109.5 |
| C1—C6—C5 | 118.12 (19) | O2—C14—H14C | 109.5 |
| C1—C6—C7 | 121.67 (18) | H14A—C14—H14C | 109.5 |
| C5—C6—C7 | 120.21 (18) | H14B—C14—H14C | 109.5 |
| O1—C7—C6 | 106.99 (15) | O3—C15—O4 | 122.60 (18) |
| O1—C7—H7A | 110.3 | O3—C15—C11 | 124.3 (2) |
| C6—C7—H7A | 110.3 | O4—C15—C11 | 113.09 (18) |
| O1—C7—H7B | 110.3 | O4—C16—H16A | 109.5 |
| C6—C7—H7B | 110.3 | O4—C16—H16B | 109.4 |
| H7A—C7—H7B | 108.6 | H16A—C16—H16B | 109.5 |
| O1—C8—C13 | 125.04 (17) | O4—C16—H16C | 109.5 |
| O1—C8—C9 | 115.48 (15) | H16A—C16—H16C | 109.5 |
| C13—C8—C9 | 119.47 (16) | H16B—C16—H16C | 109.5 |
| C6—C1—C2—C3 | 0.9 (3) | O1—C8—C9—C10 | −178.12 (16) |
| C1—C2—C3—C4 | −0.5 (3) | C13—C8—C9—C10 | 0.9 (3) |
| C2—C3—C4—C5 | 0.4 (4) | O2—C9—C10—C11 | −179.44 (17) |
| C3—C4—C5—C6 | −0.9 (4) | C8—C9—C10—C11 | 0.2 (3) |
| C2—C1—C6—C5 | −1.3 (3) | C9—C10—C11—C12 | −0.5 (3) |
| C2—C1—C6—C7 | 178.4 (2) | C9—C10—C11—C15 | 177.82 (18) |
| C4—C5—C6—C1 | 1.3 (3) | C10—C11—C12—C13 | −0.2 (3) |
| C4—C5—C6—C7 | −178.4 (2) | C15—C11—C12—C13 | −178.6 (2) |
| C8—O1—C7—C6 | −168.61 (16) | C11—C12—C13—C8 | 1.3 (4) |
| C1—C6—C7—O1 | −90.8 (2) | O1—C8—C13—C12 | 177.3 (2) |
| C5—C6—C7—O1 | 88.9 (2) | C9—C8—C13—C12 | −1.6 (3) |
| C7—O1—C8—C13 | −5.6 (3) | C16—O4—C15—O3 | 2.0 (3) |
| C7—O1—C8—C9 | 173.40 (16) | C16—O4—C15—C11 | −177.77 (18) |
| C14—O2—C9—C10 | 8.2 (3) | C12—C11—C15—O3 | 8.1 (3) |
| C14—O2—C9—C8 | −171.46 (16) | C10—C11—C15—O3 | −170.3 (2) |
| O1—C8—C9—O2 | 1.5 (2) | C12—C11—C15—O4 | −172.12 (18) |
| C13—C8—C9—O2 | −179.44 (18) | C10—C11—C15—O4 | 9.5 (3) |
| H··· | ||||
| C14—H14 | 0.96 | 2.53 | 3.379 (3) | 147 |
| C14—H14 | 0.96 | 2.75 | 3.519 (2) | 137 |
Hydrogen-bond geometry (Å, °)
Cg is the centroid of the C1–C6 ring
|
|
| H⋯ |
|
|
|---|---|---|---|---|
| C14—H14 | 0.96 | 2.53 | 3.379 (3) | 147 |
| C14—H14 | 0.96 | 2.75 | 3.519 (2) | 137 |
Symmetry codes: (i) ; (ii) .