| Literature DB >> 23284425 |
Che-Wei Chang1, Sin-Kai Fang, Ming-Hui Luo, Hsing-Yang Tsai, Kew-Yu Chen.
Abstract
The mol-ecule of the title compound, C(9)H(8)O(2), is essentially planar except for the methyl-ene H atoms [maximum deviation = 0.028 (1) Å]. In the crystal, the mol-ecules are linked by classical O-H⋯O hydrogen bonds and weak C-H⋯O inter-actions into chains along [110] and [1-10].Entities:
Year: 2012 PMID: 23284425 PMCID: PMC3515198 DOI: 10.1107/S1600536812041669
Source DB: PubMed Journal: Acta Crystallogr Sect E Struct Rep Online ISSN: 1600-5368
| C9H8O2 | |
| Monoclinic, | Mo |
| Hall symbol: -C 2yc | Cell parameters from 3232 reflections |
| θ = 2.8–29.2° | |
| µ = 0.10 mm−1 | |
| β = 116.738 (6)° | Parallelepiped, colorless |
| 0.63 × 0.60 × 0.38 mm | |
| Bruker SMART CCD detector diffractometer | 1289 reflections with |
| Radiation source: fine-focus sealed tube | |
| Graphite monochromator | θmax = 29.2°, θmin = 2.9° |
| ω scans | |
| 6305 measured reflections | |
| 1794 independent reflections |
| 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 atoms treated by a mixture of independent and constrained refinement | |
| 1794 reflections | (Δ/σ)max = 0.001 |
| 104 parameters | Δρmax = 0.21 e Å−3 |
| 0 restraints | Δρmin = −0.15 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 | 0.21183 (9) | 0.05958 (13) | 0.03489 (8) | 0.0607 (3) | |
| H1A | 0.1454 (17) | 0.116 (3) | 0.0012 (17) | 0.101 (6)* | |
| O2 | 0.51759 (9) | −0.29276 (13) | −0.06930 (10) | 0.0714 (4) | |
| C1 | 0.24288 (9) | 0.01208 (14) | −0.04004 (9) | 0.0373 (3) | |
| C2 | 0.18722 (10) | 0.05169 (14) | −0.14805 (10) | 0.0405 (3) | |
| H2A | 0.1252 | 0.1147 | −0.1716 | 0.049* | |
| C3 | 0.22258 (10) | −0.00108 (14) | −0.22117 (9) | 0.0414 (3) | |
| H3A | 0.1839 | 0.0273 | −0.2930 | 0.050* | |
| C4 | 0.31337 (10) | −0.09427 (14) | −0.18965 (10) | 0.0404 (3) | |
| H4A | 0.3372 | −0.1300 | −0.2386 | 0.049* | |
| C5 | 0.36864 (9) | −0.13348 (13) | −0.08148 (9) | 0.0350 (3) | |
| C6 | 0.33542 (9) | −0.08162 (13) | −0.00686 (9) | 0.0341 (3) | |
| C7 | 0.40960 (11) | −0.13665 (16) | 0.10481 (10) | 0.0470 (3) | |
| H7A | 0.3686 | −0.1952 | 0.1343 | 0.056* | |
| H7B | 0.4457 | −0.0499 | 0.1519 | 0.056* | |
| C8 | 0.49369 (11) | −0.24025 (16) | 0.09019 (12) | 0.0499 (4) | |
| H8A | 0.5681 | −0.2036 | 0.1346 | 0.060* | |
| H8B | 0.4879 | −0.3465 | 0.1100 | 0.060* | |
| C9 | 0.46657 (10) | −0.23041 (14) | −0.02658 (11) | 0.0445 (3) |
| O1 | 0.0637 (7) | 0.0832 (8) | 0.0452 (6) | 0.0363 (6) | 0.0333 (5) | 0.0071 (5) |
| O2 | 0.0529 (6) | 0.0864 (8) | 0.0794 (8) | 0.0316 (6) | 0.0337 (6) | −0.0066 (6) |
| C1 | 0.0363 (6) | 0.0424 (6) | 0.0357 (6) | 0.0098 (5) | 0.0186 (5) | 0.0002 (5) |
| C2 | 0.0350 (6) | 0.0421 (7) | 0.0416 (7) | 0.0121 (5) | 0.0149 (5) | 0.0066 (5) |
| C3 | 0.0460 (7) | 0.0437 (7) | 0.0305 (6) | 0.0028 (5) | 0.0135 (5) | 0.0024 (5) |
| C4 | 0.0442 (7) | 0.0446 (7) | 0.0373 (6) | 0.0016 (5) | 0.0226 (6) | −0.0067 (5) |
| C5 | 0.0305 (6) | 0.0354 (6) | 0.0398 (6) | 0.0029 (5) | 0.0162 (5) | −0.0040 (4) |
| C6 | 0.0315 (6) | 0.0365 (6) | 0.0327 (6) | 0.0047 (5) | 0.0130 (5) | −0.0003 (4) |
| C7 | 0.0428 (7) | 0.0557 (8) | 0.0357 (7) | 0.0110 (6) | 0.0118 (6) | 0.0040 (5) |
| C8 | 0.0353 (7) | 0.0491 (7) | 0.0532 (8) | 0.0116 (6) | 0.0091 (6) | 0.0054 (6) |
| C9 | 0.0329 (6) | 0.0425 (7) | 0.0559 (8) | 0.0069 (5) | 0.0181 (6) | −0.0051 (6) |
| O1—C1 | 1.3542 (13) | C4—H4A | 0.9300 |
| O1—H1A | 0.94 (2) | C5—C6 | 1.3814 (15) |
| O2—C9 | 1.2229 (14) | C5—C9 | 1.4622 (16) |
| C1—C6 | 1.3869 (15) | C6—C7 | 1.5011 (16) |
| C1—C2 | 1.3899 (17) | C7—C8 | 1.5341 (18) |
| C2—C3 | 1.3848 (16) | C7—H7A | 0.9700 |
| C2—H2A | 0.9300 | C7—H7B | 0.9700 |
| C3—C4 | 1.3683 (16) | C8—C9 | 1.501 (2) |
| C3—H3A | 0.9300 | C8—H8A | 0.9700 |
| C4—C5 | 1.3906 (16) | C8—H8B | 0.9700 |
| C1—O1—H1A | 109.4 (12) | C1—C6—C7 | 127.94 (10) |
| O1—C1—C6 | 117.97 (10) | C5—C6—C7 | 112.62 (10) |
| O1—C1—C2 | 123.73 (11) | C6—C7—C8 | 103.81 (10) |
| C6—C1—C2 | 118.30 (10) | C6—C7—H7A | 111.0 |
| C1—C2—C3 | 121.15 (11) | C8—C7—H7A | 111.0 |
| C1—C2—H2A | 119.4 | C6—C7—H7B | 111.0 |
| C3—C2—H2A | 119.4 | C8—C7—H7B | 111.0 |
| C4—C3—C2 | 121.17 (11) | H7A—C7—H7B | 109.0 |
| C4—C3—H3A | 119.4 | C9—C8—C7 | 106.09 (10) |
| C2—C3—H3A | 119.4 | C9—C8—H8A | 110.5 |
| C3—C4—C5 | 117.38 (10) | C7—C8—H8A | 110.5 |
| C3—C4—H4A | 121.3 | C9—C8—H8B | 110.5 |
| C5—C4—H4A | 121.3 | C7—C8—H8B | 110.5 |
| C4—C5—C6 | 122.57 (10) | H8A—C8—H8B | 108.7 |
| C4—C5—C9 | 128.81 (10) | O2—C9—C5 | 125.30 (13) |
| C6—C5—C9 | 108.63 (10) | O2—C9—C8 | 125.95 (12) |
| C1—C6—C5 | 119.44 (10) | C5—C9—C8 | 108.75 (10) |
| H··· | ||||
| O1—H1 | 0.94 (2) | 1.75 (2) | 2.6918 (18) | 175 (2) |
| C2—H2 | 0.93 | 2.59 | 3.255 (2) | 129 |
Hydrogen-bond geometry (Å, °)
|
|
| H⋯ |
|
|
|---|---|---|---|---|
| O1—H1 | 0.94 (2) | 1.75 (2) | 2.6918 (18) | 175 (2) |
| C2—H2 | 0.93 | 2.59 | 3.255 (2) | 129 |
Symmetry code: (i) .